* incoming @ 2021-06-29 2:32 Andrew Morton 2021-06-29 2:33 ` [patch 001/192] mm/gup: fix try_grab_compound_head() race with split_huge_page() Andrew Morton ` (191 more replies) 0 siblings, 192 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 192 patches, based on 7cf3dead1ad70c72edb03e2d98e1f3dcd332cdb2. Subsystems affected by this patch series: mm/gup mm/pagealloc kthread ia64 scripts ntfs squashfs ocfs2 z kernel/watchdog mm/slab mm/slub mm/kmemleak mm/dax mm/debug mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/mprotect mm/bootmem mm/dma mm/tracing mm/vmalloc mm/kasan mm/initialization mm/pagealloc mm/memory-failure Subsystem: mm/gup Jann Horn <jannh@google.com>: mm/gup: fix try_grab_compound_head() race with split_huge_page() Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: mm/page_alloc: fix memory map initialization for descending nodes Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: correct return value of populated elements if bulk array is populated Subsystem: kthread Jonathan Neuschäfer <j.neuschaefer@gmx.net>: kthread: switch to new kerneldoc syntax for named variable macro argument Petr Mladek <pmladek@suse.com>: kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Subsystem: ia64 Randy Dunlap <rdunlap@infradead.org>: ia64: headers: drop duplicated words Arnd Bergmann <arnd@arndb.de>: ia64: mca_drv: fix incorrect array size calculation Subsystem: scripts "Steven Rostedt (VMware)" <rostedt@goodmis.org>: Patch series "streamline_config.pl: Fix Perl spacing": streamline_config.pl: make spacing consistent streamline_config.pl: add softtabstop=4 for vim users Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ntfs Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>: ntfs: fix validity check for file name attribute Subsystem: squashfs Vincent Whitchurch <vincent.whitchurch@axis.com>: squashfs: add option to panic on errors Subsystem: ocfs2 Yang Yingliang <yangyingliang@huawei.com>: ocfs2: remove unnecessary INIT_LIST_HEAD() Subsystem: z Dan Carpenter <dan.carpenter@oracle.com>: ocfs2: fix snprintf() checking Colin Ian King <colin.king@canonical.com>: ocfs2: remove redundant assignment to pointer queue Wan Jiabing <wanjiabing@vivo.com>: ocfs2: remove repeated uptodate check for buffer Chen Huang <chenhuang5@huawei.com>: ocfs2: replace simple_strtoull() with kstrtoull() Colin Ian King <colin.king@canonical.com>: ocfs2: remove redundant initialization of variable ret Subsystem: kernel/watchdog Wang Qing <wangqing@vivo.com>: kernel: watchdog: modify the explanation related to watchdog thread doc: watchdog: modify the explanation related to watchdog thread doc: watchdog: modify the doc related to "watchdog/%u" Subsystem: mm/slab gumingtao <gumingtao1225@gmail.com>: slab: use __func__ to trace function name Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: kunit: make test->lock irq safe Oliver Glitta <glittao@gmail.com>: mm/slub, kunit: add a KUnit test for SLUB debugging functionality slub: remove resiliency_test() function Hyeonggon Yoo <42.hyeyoo@gmail.com>: mm, slub: change run-time assertion in kmalloc_index() to compile-time Stephen Boyd <swboyd@chromium.org>: slub: restore slub_debug=- behavior slub: actually use 'message' in restore_bytes() Joe Perches <joe@perches.com>: slub: indicate slab_fix() uses printf formats Stephen Boyd <swboyd@chromium.org>: slub: force on no_hash_pointers when slub_debug is enabled Faiyaz Mohammed <faiyazm@codeaurora.org>: mm: slub: move sysfs slab alloc/free interfaces to debugfs Georgi Djakov <quic_c_gdjako@quicinc.com>: mm/slub: add taint after the errors are printed Subsystem: mm/kmemleak Yanfei Xu <yanfei.xu@windriver.com>: mm/kmemleak: fix possible wrong memory scanning period Subsystem: mm/dax Jan Kara <jack@suse.cz>: dax: fix ENOMEM handling in grab_mapping_entry() Subsystem: mm/debug Tang Bin <tangbin@cmss.chinamobile.com>: tools/vm/page_owner_sort.c: check malloc() return Anshuman Khandual <anshuman.khandual@arm.com>: mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() Nicolas Saenz Julienne <nsaenzju@redhat.com>: mm: mmap_lock: use local locks instead of disabling preemption Gavin Shan <gshan@redhat.com>: Patch series "mm/page_reporting: Make page reporting work on arm64 with 64KB page size", v4: mm/page_reporting: fix code style in __page_reporting_request() mm/page_reporting: export reporting order as module parameter mm/page_reporting: allow driver to specify reporting order virtio_balloon: specify page reporting order if needed Subsystem: mm/pagecache Kefeng Wang <wangkefeng.wang@huawei.com>: mm: page-writeback: kill get_writeback_state() comments Chi Wu <wuchi.zero@gmail.com>: mm/page-writeback: Fix performance when BDI's share of ratio is 0. mm/page-writeback: update the comment of Dirty position control mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() Roman Gushchin <guro@fb.com>: Patch series "cgroup, blkcg: prevent dirty inodes to pin dying memory cgroups", v9: writeback, cgroup: do not switch inodes with I_WILL_FREE flag writeback, cgroup: add smp_mb() to cgroup_writeback_umount() writeback, cgroup: increment isw_nr_in_flight before grabbing an inode writeback, cgroup: switch to rcu_work API in inode_switch_wbs() writeback, cgroup: keep list of inodes attached to bdi_writeback writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() writeback, cgroup: support switching multiple inodes at once writeback, cgroup: release dying cgwbs by switching attached inodes Christoph Hellwig <hch@lst.de>: Patch series "remove the implicit .set_page_dirty default": fs: unexport __set_page_dirty fs: move ramfs_aops to libfs mm: require ->set_page_dirty to be explicitly wired up "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Further set_page_dirty cleanups": mm/writeback: move __set_page_dirty() to core mm mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers iomap: use __set_page_dirty_nobuffers fs: remove anon_set_page_dirty() fs: remove noop_set_page_dirty() mm: move page dirtying prototypes from mm.h Subsystem: mm/gup Peter Xu <peterx@redhat.com>: Patch series "mm/gup: Fix pin page write cache bouncing on has_pinned", v2: mm/gup_benchmark: support threading Andrea Arcangeli <aarcange@redhat.com>: mm: gup: allow FOLL_PIN to scale in SMP mm: gup: pack has_pinned in MMF_HAS_PINNED Christophe Leroy <christophe.leroy@csgroup.eu>: mm: pagewalk: fix walk for hugepage tables Subsystem: mm/swap Miaohe Lin <linmiaohe@huawei.com>: Patch series "close various race windows for swap", v6: mm/swapfile: use percpu_ref to serialize against concurrent swapoff swap: fix do_swap_page() race with swapoff mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() mm/shmem: fix shmem_swapin() race with swapoff Patch series "Cleanups for swap", v2: mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION mm/swap: remove unused local variable nr_shadows mm/swap_slots.c: delete meaningless forward declarations Huang Ying <ying.huang@intel.com>: mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() mm: free idle swap cache page after COW swap: check mapping_empty() for swap cache before being freed Subsystem: mm/memcg Waiman Long <longman@redhat.com>: Patch series "mm/memcg: Reduce kmemcache memory accounting overhead", v6: mm/memcg: move mod_objcg_state() to memcontrol.c mm/memcg: cache vmstat data in percpu memcg_stock_pcp mm/memcg: improve refill_obj_stock() performance mm/memcg: optimize user context object stock access Patch series "mm: memcg/slab: Fix objcg pointer array handling problem", v4: mm: memcg/slab: properly set up gfp flags for objcg pointer array mm: memcg/slab: create a new set of kmalloc-cg-<n> caches mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: fix root_mem_cgroup charging Patch series "memcontrol code cleanup and simplification", v3: mm: memcontrol: fix page charging in page replacement mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec mm: memcontrol: simplify lruvec_holds_page_lru_lock mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec mm: memcontrol: simplify the logic of objcg pinning memcg mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock mm: vmscan: remove noinline_for_stack wenhuizhang <wenhui@gwmail.gwu.edu>: memcontrol: use flexible-array member Dan Schatzberg <schatzberg.dan@gmail.com>: Patch series "Charge loop device i/o to issuing cgroup", v14: loop: use worker per cgroup instead of kworker mm: charge active memcg when no mm is set loop: charge i/o to mem and blk cg Huilong Deng <denghuilong@cdjrlc.com>: mm: memcontrol: remove trailing semicolon in macros Subsystem: mm/pagemap David Hildenbrand <david@redhat.com>: Patch series "perf/binfmt/mm: remove in-tree usage of MAP_EXECUTABLE": perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC binfmt: remove in-tree usage of MAP_EXECUTABLE mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() Gonzalo Matias Juarez Tello <gmjuareztello@gmail.com>: mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap Liam Howlett <liam.howlett@oracle.com>: mm/mmap: introduce unlock_range() for code cleanup mm/mmap: use find_vma_intersection() in do_mmap() for overlap Liu Xiang <liu.xiang@zlingsmart.com>: mm/memory.c: fix comment of finish_mkwrite_fault() Liam Howlett <liam.howlett@oracle.com>: Patch series "mm: Add vma_lookup()", v2: mm: add vma_lookup(), update find_vma_intersection() comments drm/i915/selftests: use vma_lookup() in __igt_mmap() arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() arch/powerpc/kvm/book3s_hv_uvmem: use vma_lookup() instead of find_vma_intersection() arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() arch/mips/kernel/traps: use vma_lookup() instead of find_vma() arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() x86/sgx: use vma_lookup() in sgx_encl_find() virt/kvm: use vma_lookup() instead of find_vma_intersection() vfio: use vma_lookup() instead of find_vma_intersection() net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() media: videobuf2: use vma_lookup() in get_vaddr_frames() misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() kernel/events/uprobes: use vma_lookup() in find_active_uprobe() lib/test_hmm: use vma_lookup() in dmirror_migrate() mm/ksm: use vma_lookup() in find_mergeable_vma() mm/migrate: use vma_lookup() in do_pages_stat_array() mm/mremap: use vma_lookup() in vma_to_resize() mm/memory.c: use vma_lookup() in __access_remote_vm() mm/mempolicy: use vma_lookup() in __access_remote_vm() Chen Li <chenli@uniontech.com>: mm: update legacy flush_tlb_* to use vma Subsystem: mm/mprotect Peter Collingbourne <pcc@google.com>: mm: improve mprotect(R|W) efficiency on pages referenced once Subsystem: mm/bootmem Souptick Joarder <jrdr.linux@gmail.com>: h8300: remove unused variable Subsystem: mm/dma YueHaibing <yuehaibing@huawei.com>: mm/dmapool: use DEVICE_ATTR_RO macro Subsystem: mm/tracing Vincent Whitchurch <vincent.whitchurch@axis.com>: mm, tracing: unify PFN format strings Subsystem: mm/vmalloc "Uladzislau Rezki (Sony)" <urezki@gmail.com>: Patch series "vmalloc() vs bulk allocator", v2: mm/page_alloc: add an alloc_pages_bulk_array_node() helper mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() mm/vmalloc: print a warning message first on failure mm/vmalloc: remove quoted strings split across lines Uladzislau Rezki <urezki@gmail.com>: mm/vmalloc: fallback to a single page allocator Rafael Aquini <aquini@redhat.com>: mm: vmalloc: add cond_resched() in __vunmap() Subsystem: mm/kasan Alexander Potapenko <glider@google.com>: printk: introduce dump_stack_lvl() kasan: use dump_stack_lvl(KERN_ERR) to print stacks David Gow <davidgow@google.com>: kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() Daniel Axtens <dja@axtens.net>: Patch series "KASAN core changes for ppc64 radix KASAN", v16: kasan: allow an architecture to disable inline instrumentation kasan: allow architectures to provide an outline readiness check mm: define default MAX_PTRS_PER_* in include/pgtable.h kasan: use MAX_PTRS_PER_* for early shadow tables Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: Patch series "kasan: add memory corruption identification support for hw tag-based kasan", v4: kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY kasan: integrate the common part of two KASAN tag-based modes kasan: add memory corruption identification support for hardware tag-based mode Subsystem: mm/initialization Jungseung Lee <js07.lee@samsung.com>: mm: report which part of mem is being freed on initmem case Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: mm/mmzone.h: simplify is_highmem_idx() "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Constify struct page arguments": mm: make __dump_page static Aaron Tomlin <atomlin@redhat.com>: mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/debug: factor PagePoisoned out of __dump_page mm/page_owner: constify dump_page_owner mm: make compound_head const-preserving mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype mm: constify page_count and page_ref_count mm: optimise nth_page for contiguous memmap Heiner Kallweit <hkallweit1@gmail.com>: mm/page_alloc: switch to pr_debug Andrii Nakryiko <andrii@kernel.org>: kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: split per cpu page lists and zone stats mm/page_alloc: convert per-cpu list protection to local_lock mm/vmstat: convert NUMA statistics to basic NUMA counters mm/vmstat: inline NUMA event counter updates mm/page_alloc: batch the accounting updates in the bulk allocator mm/page_alloc: reduce duration that IRQs are disabled for VM counters mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok mm/page_alloc: avoid conflating IRQs disabled with zone->lock mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok Minchan Kim <minchan@kernel.org>: mm: page_alloc: dump migrate-failed pages only at -EBUSY Mel Gorman <mgorman@techsingularity.net>: Patch series "Calculate pcp->high based on zone sizes and active CPUs", v2: mm/page_alloc: delete vm.percpu_pagelist_fraction mm/page_alloc: disassociate the pcp->high from pcp->batch mm/page_alloc: adjust pcp->high after CPU hotplug events mm/page_alloc: scale the number of pages that are batch freed mm/page_alloc: limit the number of pages on PCP lists when reclaim is active mm/page_alloc: introduce vm.percpu_pagelist_high_fraction Dong Aisheng <aisheng.dong@nxp.com>: mm: drop SECTION_SHIFT in code comments mm/page_alloc: improve memmap_pages dbg msg Liu Shixin <liushixin2@huawei.com>: mm/page_alloc: fix counting of managed_pages Mel Gorman <mgorman@techsingularity.net>: Patch series "Allow high order pages to be stored on PCP", v2: mm/page_alloc: move free_the_page Mike Rapoport <rppt@linux.ibm.com>: Patch series "Remove DISCONTIGMEM memory model", v3: alpha: remove DISCONTIGMEM and NUMA arc: update comment about HIGHMEM implementation arc: remove support for DISCONTIGMEM m68k: remove support for DISCONTIGMEM mm: remove CONFIG_DISCONTIGMEM arch, mm: remove stale mentions of DISCONIGMEM docs: remove description of DISCONTIGMEM mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: allow high-order pages to be stored on the per-cpu lists mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm,hwpoison: send SIGBUS with error virutal address mm,hwpoison: make get_hwpoison_page() call get_any_page() Documentation/admin-guide/kernel-parameters.txt | 6 Documentation/admin-guide/lockup-watchdogs.rst | 4 Documentation/admin-guide/sysctl/kernel.rst | 10 Documentation/admin-guide/sysctl/vm.rst | 52 - Documentation/dev-tools/kasan.rst | 9 Documentation/vm/memory-model.rst | 45 arch/alpha/Kconfig | 22 arch/alpha/include/asm/machvec.h | 6 arch/alpha/include/asm/mmzone.h | 100 -- arch/alpha/include/asm/pgtable.h | 4 arch/alpha/include/asm/topology.h | 39 arch/alpha/kernel/core_marvel.c | 53 - arch/alpha/kernel/core_wildfire.c | 29 arch/alpha/kernel/pci_iommu.c | 29 arch/alpha/kernel/proto.h | 8 arch/alpha/kernel/setup.c | 16 arch/alpha/kernel/sys_marvel.c | 5 arch/alpha/kernel/sys_wildfire.c | 5 arch/alpha/mm/Makefile | 2 arch/alpha/mm/init.c | 3 arch/alpha/mm/numa.c | 223 ---- arch/arc/Kconfig | 13 arch/arc/include/asm/mmzone.h | 40 arch/arc/kernel/troubleshoot.c | 8 arch/arc/mm/init.c | 21 arch/arm/include/asm/tlbflush.h | 13 arch/arm/mm/tlb-v6.S | 2 arch/arm/mm/tlb-v7.S | 2 arch/arm64/Kconfig | 2 arch/arm64/kvm/mmu.c | 2 arch/h8300/kernel/setup.c | 2 arch/ia64/Kconfig | 2 arch/ia64/include/asm/pal.h | 2 arch/ia64/include/asm/spinlock.h | 2 arch/ia64/include/asm/uv/uv_hub.h | 2 arch/ia64/kernel/efi_stub.S | 2 arch/ia64/kernel/mca_drv.c | 2 arch/ia64/kernel/topology.c | 5 arch/ia64/mm/numa.c | 5 arch/m68k/Kconfig.cpu | 10 arch/m68k/include/asm/mmzone.h | 10 arch/m68k/include/asm/page.h | 2 arch/m68k/include/asm/page_mm.h | 35 arch/m68k/include/asm/tlbflush.h | 2 arch/m68k/kernel/sys_m68k.c | 4 arch/m68k/mm/init.c | 20 arch/mips/Kconfig | 2 arch/mips/include/asm/mmzone.h | 8 arch/mips/include/asm/page.h | 2 arch/mips/kernel/traps.c | 4 arch/mips/mm/init.c | 7 arch/nds32/include/asm/memory.h | 6 arch/openrisc/include/asm/tlbflush.h | 2 arch/powerpc/Kconfig | 2 arch/powerpc/include/asm/mmzone.h | 4 arch/powerpc/kernel/setup_64.c | 2 arch/powerpc/kernel/smp.c | 2 arch/powerpc/kexec/core.c | 4 arch/powerpc/kvm/book3s_hv.c | 4 arch/powerpc/kvm/book3s_hv_uvmem.c | 2 arch/powerpc/mm/Makefile | 2 arch/powerpc/mm/mem.c | 4 arch/riscv/Kconfig | 2 arch/s390/Kconfig | 2 arch/s390/include/asm/pgtable.h | 2 arch/sh/include/asm/mmzone.h | 4 arch/sh/kernel/topology.c | 2 arch/sh/mm/Kconfig | 2 arch/sh/mm/init.c | 2 arch/sparc/Kconfig | 2 arch/sparc/include/asm/mmzone.h | 4 arch/sparc/kernel/smp_64.c | 2 arch/sparc/mm/init_64.c | 12 arch/x86/Kconfig | 2 arch/x86/ia32/ia32_aout.c | 4 arch/x86/kernel/cpu/mce/core.c | 13 arch/x86/kernel/cpu/sgx/encl.h | 4 arch/x86/kernel/setup_percpu.c | 6 arch/x86/mm/init_32.c | 4 arch/xtensa/include/asm/page.h | 4 arch/xtensa/include/asm/tlbflush.h | 4 drivers/base/node.c | 18 drivers/block/loop.c | 270 ++++- drivers/block/loop.h | 15 drivers/dax/device.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 2 drivers/media/common/videobuf2/frame_vector.c | 2 drivers/misc/sgi-gru/grufault.c | 4 drivers/vfio/vfio_iommu_type1.c | 2 drivers/virtio/virtio_balloon.c | 17 fs/adfs/inode.c | 1 fs/affs/file.c | 2 fs/bfs/file.c | 1 fs/binfmt_aout.c | 4 fs/binfmt_elf.c | 2 fs/binfmt_elf_fdpic.c | 11 fs/binfmt_flat.c | 2 fs/block_dev.c | 1 fs/buffer.c | 25 fs/configfs/inode.c | 8 fs/dax.c | 3 fs/ecryptfs/mmap.c | 13 fs/exfat/inode.c | 1 fs/ext2/inode.c | 4 fs/ext4/inode.c | 2 fs/fat/inode.c | 1 fs/fs-writeback.c | 366 +++++--- fs/fuse/dax.c | 3 fs/gfs2/aops.c | 2 fs/gfs2/meta_io.c | 2 fs/hfs/inode.c | 2 fs/hfsplus/inode.c | 2 fs/hpfs/file.c | 1 fs/iomap/buffered-io.c | 27 fs/jfs/inode.c | 1 fs/kernfs/inode.c | 8 fs/libfs.c | 44 fs/minix/inode.c | 1 fs/nilfs2/mdt.c | 1 fs/ntfs/inode.c | 2 fs/ocfs2/aops.c | 4 fs/ocfs2/cluster/heartbeat.c | 7 fs/ocfs2/cluster/nodemanager.c | 2 fs/ocfs2/dlm/dlmmaster.c | 2 fs/ocfs2/filecheck.c | 6 fs/ocfs2/stackglue.c | 8 fs/omfs/file.c | 1 fs/proc/task_mmu.c | 2 fs/ramfs/inode.c | 9 fs/squashfs/block.c | 5 fs/squashfs/squashfs_fs_sb.h | 1 fs/squashfs/super.c | 86 + fs/sysv/itree.c | 1 fs/udf/file.c | 1 fs/udf/inode.c | 1 fs/ufs/inode.c | 1 fs/xfs/xfs_aops.c | 4 fs/zonefs/super.c | 4 include/asm-generic/memory_model.h | 37 include/asm-generic/pgtable-nop4d.h | 1 include/asm-generic/topology.h | 2 include/kunit/test.h | 5 include/linux/backing-dev-defs.h | 20 include/linux/cpuhotplug.h | 2 include/linux/fs.h | 6 include/linux/gfp.h | 13 include/linux/iomap.h | 1 include/linux/kasan.h | 7 include/linux/kernel.h | 2 include/linux/kthread.h | 2 include/linux/memblock.h | 6 include/linux/memcontrol.h | 60 - include/linux/mm.h | 53 - include/linux/mm_types.h | 10 include/linux/mman.h | 2 include/linux/mmdebug.h | 3 include/linux/mmzone.h | 96 +- include/linux/page-flags.h | 10 include/linux/page_owner.h | 6 include/linux/page_ref.h | 4 include/linux/page_reporting.h | 3 include/linux/pageblock-flags.h | 2 include/linux/pagemap.h | 4 include/linux/pgtable.h | 22 include/linux/printk.h | 5 include/linux/sched/coredump.h | 8 include/linux/slab.h | 59 + include/linux/swap.h | 19 include/linux/swapops.h | 5 include/linux/vmstat.h | 69 - include/linux/writeback.h | 1 include/trace/events/cma.h | 4 include/trace/events/filemap.h | 2 include/trace/events/kmem.h | 12 include/trace/events/page_pool.h | 4 include/trace/events/pagemap.h | 4 include/trace/events/vmscan.h | 2 kernel/cgroup/cgroup.c | 1 kernel/crash_core.c | 4 kernel/events/core.c | 2 kernel/events/uprobes.c | 4 kernel/fork.c | 1 kernel/kthread.c | 19 kernel/sysctl.c | 16 kernel/watchdog.c | 12 lib/Kconfig.debug | 15 lib/Kconfig.kasan | 16 lib/Makefile | 1 lib/dump_stack.c | 20 lib/kunit/test.c | 18 lib/slub_kunit.c | 152 +++ lib/test_hmm.c | 5 lib/test_kasan.c | 11 lib/vsprintf.c | 2 mm/Kconfig | 38 mm/backing-dev.c | 66 + mm/compaction.c | 2 mm/debug.c | 27 mm/debug_vm_pgtable.c | 63 + mm/dmapool.c | 5 mm/filemap.c | 2 mm/gup.c | 81 + mm/hugetlb.c | 2 mm/internal.h | 9 mm/kasan/Makefile | 4 mm/kasan/common.c | 6 mm/kasan/generic.c | 3 mm/kasan/hw_tags.c | 22 mm/kasan/init.c | 6 mm/kasan/kasan.h | 12 mm/kasan/report.c | 6 mm/kasan/report_hw_tags.c | 5 mm/kasan/report_sw_tags.c | 45 mm/kasan/report_tags.c | 51 + mm/kasan/shadow.c | 6 mm/kasan/sw_tags.c | 45 mm/kasan/tags.c | 59 + mm/kfence/kfence_test.c | 5 mm/kmemleak.c | 18 mm/ksm.c | 6 mm/memblock.c | 8 mm/memcontrol.c | 385 ++++++-- mm/memory-failure.c | 344 +++++-- mm/memory.c | 22 mm/memory_hotplug.c | 6 mm/mempolicy.c | 4 mm/migrate.c | 4 mm/mmap.c | 54 - mm/mmap_lock.c | 33 mm/mprotect.c | 52 + mm/mremap.c | 5 mm/nommu.c | 2 mm/page-writeback.c | 89 + mm/page_alloc.c | 950 +++++++++++++-------- mm/page_ext.c | 2 mm/page_owner.c | 2 mm/page_reporting.c | 19 mm/page_reporting.h | 5 mm/pagewalk.c | 58 + mm/shmem.c | 18 mm/slab.h | 24 mm/slab_common.c | 60 - mm/slub.c | 420 +++++---- mm/sparse.c | 2 mm/swap.c | 4 mm/swap_slots.c | 2 mm/swap_state.c | 20 mm/swapfile.c | 177 +-- mm/vmalloc.c | 181 ++-- mm/vmscan.c | 43 mm/vmstat.c | 282 ++---- mm/workingset.c | 2 net/ipv4/tcp.c | 4 scripts/kconfig/streamline_config.pl | 76 - scripts/link-vmlinux.sh | 4 scripts/spelling.txt | 16 tools/testing/selftests/vm/gup_test.c | 96 +- tools/vm/page_owner_sort.c | 4 virt/kvm/kvm_main.c | 2 260 files changed, 3989 insertions(+), 2996 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 001/192] mm/gup: fix try_grab_compound_head() race with split_huge_page() 2021-06-29 2:32 incoming Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 002/192] mm/page_alloc: fix memory map initialization for descending nodes Andrew Morton ` (190 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, jack, jannh, jhubbard, kirill, linux-mm, mm-commits, stable, torvalds, willy From: Jann Horn <jannh@google.com> Subject: mm/gup: fix try_grab_compound_head() race with split_huge_page() try_grab_compound_head() is used to grab a reference to a page from get_user_pages_fast(), which is only protected against concurrent freeing of page tables (via local_irq_save()), but not against concurrent TLB flushes, freeing of data pages, or splitting of compound pages. Because no reference is held to the page when try_grab_compound_head() is called, the page may have been freed and reallocated by the time its refcount has been elevated; therefore, once we're holding a stable reference to the page, the caller re-checks whether the PTE still points to the same page (with the same access rights). The problem is that try_grab_compound_head() has to grab a reference on the head page; but between the time we look up what the head page is and the time we actually grab a reference on the head page, the compound page may have been split up (either explicitly through split_huge_page() or by freeing the compound page to the buddy allocator and then allocating its individual order-0 pages). If that happens, get_user_pages_fast() may end up returning the right page but lifting the refcount on a now-unrelated page, leading to use-after-free of pages. To fix it: Re-check whether the pages still belong together after lifting the refcount on the head page. Move anything else that checks compound_head(page) below the refcount increment. This can't actually happen on bare-metal x86 (because there, disabling IRQs locks out remote TLB flushes), but it can happen on virtualized x86 (e.g. under KVM) and probably also on arm64. The race window is pretty narrow, and constantly allocating and shattering hugepages isn't exactly fast; for now I've only managed to reproduce this in an x86 KVM guest with an artificially widened timing window (by adding a loop that repeatedly calls `inl(0x3f8 + 5)` in `try_get_compound_head()` to force VM exits, so that PV TLB flushes are used instead of IPIs). As requested on the list, also replace the existing VM_BUG_ON_PAGE() with a warning and bailout. Since the existing code only performed the BUG_ON check on DEBUG_VM kernels, ensure that the new code also only performs the check under that configuration - I don't want to mix two logically separate changes together too much. The macro VM_WARN_ON_ONCE_PAGE() doesn't return a value on !DEBUG_VM, so wrap the whole check in an #ifdef block. An alternative would be to change the VM_WARN_ON_ONCE_PAGE() definition for !DEBUG_VM such that it always returns false, but since that would differ from the behavior of the normal WARN macros, it might be too confusing for readers. Link: https://lkml.kernel.org/r/20210615012014.1100672-1-jannh@google.com Fixes: 7aef4172c795 ("mm: handle PTE-mapped tail pages in gerneric fast gup implementaiton") Signed-off-by: Jann Horn <jannh@google.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Jan Kara <jack@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/gup.c | 58 +++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 43 insertions(+), 15 deletions(-) --- a/mm/gup.c~mm-gup-fix-try_grab_compound_head-race-with-split_huge_page +++ a/mm/gup.c @@ -44,6 +44,23 @@ static void hpage_pincount_sub(struct pa atomic_sub(refs, compound_pincount_ptr(page)); } +/* Equivalent to calling put_page() @refs times. */ +static void put_page_refs(struct page *page, int refs) +{ +#ifdef CONFIG_DEBUG_VM + if (VM_WARN_ON_ONCE_PAGE(page_ref_count(page) < refs, page)) + return; +#endif + + /* + * Calling put_page() for each ref is unnecessarily slow. Only the last + * ref needs a put_page(). + */ + if (refs > 1) + page_ref_sub(page, refs - 1); + put_page(page); +} + /* * Return the compound head page with ref appropriately incremented, * or NULL if that failed. @@ -56,6 +73,21 @@ static inline struct page *try_get_compo return NULL; if (unlikely(!page_cache_add_speculative(head, refs))) return NULL; + + /* + * At this point we have a stable reference to the head page; but it + * could be that between the compound_head() lookup and the refcount + * increment, the compound page was split, in which case we'd end up + * holding a reference on a page that has nothing to do with the page + * we were given anymore. + * So now that the head page is stable, recheck that the pages still + * belong together. + */ + if (unlikely(compound_head(page) != head)) { + put_page_refs(head, refs); + return NULL; + } + return head; } @@ -96,6 +128,14 @@ __maybe_unused struct page *try_grab_com return NULL; /* + * CAUTION: Don't use compound_head() on the page before this + * point, the result won't be stable. + */ + page = try_get_compound_head(page, refs); + if (!page) + return NULL; + + /* * When pinning a compound page of order > 1 (which is what * hpage_pincount_available() checks for), use an exact count to * track it, via hpage_pincount_add/_sub(). @@ -103,15 +143,10 @@ __maybe_unused struct page *try_grab_com * However, be sure to *also* increment the normal page refcount * field at least once, so that the page really is pinned. */ - if (!hpage_pincount_available(page)) - refs *= GUP_PIN_COUNTING_BIAS; - - page = try_get_compound_head(page, refs); - if (!page) - return NULL; - if (hpage_pincount_available(page)) hpage_pincount_add(page, refs); + else + page_ref_add(page, refs * (GUP_PIN_COUNTING_BIAS - 1)); mod_node_page_state(page_pgdat(page), NR_FOLL_PIN_ACQUIRED, orig_refs); @@ -135,14 +170,7 @@ static void put_compound_head(struct pag refs *= GUP_PIN_COUNTING_BIAS; } - VM_BUG_ON_PAGE(page_ref_count(page) < refs, page); - /* - * Calling put_page() for each ref is unnecessarily slow. Only the last - * ref needs a put_page(). - */ - if (refs > 1) - page_ref_sub(page, refs - 1); - put_page(page); + put_page_refs(page, refs); } /** _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 002/192] mm/page_alloc: fix memory map initialization for descending nodes 2021-06-29 2:32 incoming Andrew Morton 2021-06-29 2:33 ` [patch 001/192] mm/gup: fix try_grab_compound_head() race with split_huge_page() Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 003/192] mm/page_alloc: correct return value of populated elements if bulk array is populated Andrew Morton ` (189 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, bhe, bp, david, linux-mm, mm-commits, robert.shteynfeld, rppt, stable, torvalds, vbabka From: Mike Rapoport <rppt@linux.ibm.com> Subject: mm/page_alloc: fix memory map initialization for descending nodes On systems with memory nodes sorted in descending order, for instance Dell Precision WorkStation T5500, the struct pages for higher PFNs and respectively lower nodes, could be overwritten by the initialization of struct pages corresponding to the holes in the memory sections. For example for the below memory layout [ 0.245624] Early memory node ranges [ 0.248496] node 1: [mem 0x0000000000001000-0x0000000000090fff] [ 0.251376] node 1: [mem 0x0000000000100000-0x00000000dbdf8fff] [ 0.254256] node 1: [mem 0x0000000100000000-0x0000001423ffffff] [ 0.257144] node 0: [mem 0x0000001424000000-0x0000002023ffffff] the range 0x1424000000 - 0x1428000000 in the beginning of node 0 starts in the middle of a section and will be considered as a hole during the initialization of the last section in node 1. The wrong initialization of the memory map causes panic on boot when CONFIG_DEBUG_VM is enabled. Reorder loop order of the memory map initialization so that the outer loop will always iterate over populated memory regions in the ascending order and the inner loop will select the zone corresponding to the PFN range. This way initialization of the struct pages for the memory holes will be always done for the ranges that are actually not populated. [akpm@linux-foundation.org: coding style fixes] Link: https://lkml.kernel.org/r/YNXlMqBbL+tBG7yq@kernel.org Link: https://bugzilla.kernel.org/show_bug.cgi?id=213073 Link: https://lkml.kernel.org/r/20210624062305.10940-1-rppt@kernel.org Fixes: 0740a50b9baa ("mm/page_alloc.c: refactor initialization of struct page for holes in memory layout") Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Boris Petkov <bp@alien8.de> Cc: Robert Shteynfeld <robert.shteynfeld@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Hildenbrand <david@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mm.h | 1 mm/page_alloc.c | 96 ++++++++++++++++++++++++++----------------- 2 files changed, 59 insertions(+), 38 deletions(-) --- a/include/linux/mm.h~mm-page_alloc-fix-memory-map-initialization-for-descending-nodes +++ a/include/linux/mm.h @@ -2474,7 +2474,6 @@ extern void set_dma_reserve(unsigned lon extern void memmap_init_range(unsigned long, int, unsigned long, unsigned long, unsigned long, enum meminit_context, struct vmem_altmap *, int migratetype); -extern void memmap_init_zone(struct zone *zone); extern void setup_per_zone_wmarks(void); extern int __meminit init_per_zone_wmark_min(void); extern void mem_init(void); --- a/mm/page_alloc.c~mm-page_alloc-fix-memory-map-initialization-for-descending-nodes +++ a/mm/page_alloc.c @@ -6400,7 +6400,7 @@ void __ref memmap_init_zone_device(struc return; /* - * The call to memmap_init_zone should have already taken care + * The call to memmap_init should have already taken care * of the pages reserved for the memmap, so we can just jump to * the end of that region and start processing the device pages. */ @@ -6465,7 +6465,7 @@ static void __meminit zone_init_free_lis /* * Only struct pages that correspond to ranges defined by memblock.memory * are zeroed and initialized by going through __init_single_page() during - * memmap_init_zone(). + * memmap_init_zone_range(). * * But, there could be struct pages that correspond to holes in * memblock.memory. This can happen because of the following reasons: @@ -6484,9 +6484,9 @@ static void __meminit zone_init_free_lis * zone/node above the hole except for the trailing pages in the last * section that will be appended to the zone/node below. */ -static u64 __meminit init_unavailable_range(unsigned long spfn, - unsigned long epfn, - int zone, int node) +static void __init init_unavailable_range(unsigned long spfn, + unsigned long epfn, + int zone, int node) { unsigned long pfn; u64 pgcnt = 0; @@ -6502,56 +6502,77 @@ static u64 __meminit init_unavailable_ra pgcnt++; } - return pgcnt; + if (pgcnt) + pr_info("On node %d, zone %s: %lld pages in unavailable ranges", + node, zone_names[zone], pgcnt); } #else -static inline u64 init_unavailable_range(unsigned long spfn, unsigned long epfn, - int zone, int node) +static inline void init_unavailable_range(unsigned long spfn, + unsigned long epfn, + int zone, int node) { - return 0; } #endif -void __meminit __weak memmap_init_zone(struct zone *zone) +static void __init memmap_init_zone_range(struct zone *zone, + unsigned long start_pfn, + unsigned long end_pfn, + unsigned long *hole_pfn) { unsigned long zone_start_pfn = zone->zone_start_pfn; unsigned long zone_end_pfn = zone_start_pfn + zone->spanned_pages; - int i, nid = zone_to_nid(zone), zone_id = zone_idx(zone); - static unsigned long hole_pfn; + int nid = zone_to_nid(zone), zone_id = zone_idx(zone); + + start_pfn = clamp(start_pfn, zone_start_pfn, zone_end_pfn); + end_pfn = clamp(end_pfn, zone_start_pfn, zone_end_pfn); + + if (start_pfn >= end_pfn) + return; + + memmap_init_range(end_pfn - start_pfn, nid, zone_id, start_pfn, + zone_end_pfn, MEMINIT_EARLY, NULL, MIGRATE_MOVABLE); + + if (*hole_pfn < start_pfn) + init_unavailable_range(*hole_pfn, start_pfn, zone_id, nid); + + *hole_pfn = end_pfn; +} + +static void __init memmap_init(void) +{ unsigned long start_pfn, end_pfn; - u64 pgcnt = 0; + unsigned long hole_pfn = 0; + int i, j, zone_id, nid; - for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) { - start_pfn = clamp(start_pfn, zone_start_pfn, zone_end_pfn); - end_pfn = clamp(end_pfn, zone_start_pfn, zone_end_pfn); + for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid) { + struct pglist_data *node = NODE_DATA(nid); + + for (j = 0; j < MAX_NR_ZONES; j++) { + struct zone *zone = node->node_zones + j; + + if (!populated_zone(zone)) + continue; - if (end_pfn > start_pfn) - memmap_init_range(end_pfn - start_pfn, nid, - zone_id, start_pfn, zone_end_pfn, - MEMINIT_EARLY, NULL, MIGRATE_MOVABLE); - - if (hole_pfn < start_pfn) - pgcnt += init_unavailable_range(hole_pfn, start_pfn, - zone_id, nid); - hole_pfn = end_pfn; + memmap_init_zone_range(zone, start_pfn, end_pfn, + &hole_pfn); + zone_id = j; + } } #ifdef CONFIG_SPARSEMEM /* - * Initialize the hole in the range [zone_end_pfn, section_end]. - * If zone boundary falls in the middle of a section, this hole - * will be re-initialized during the call to this function for the - * higher zone. + * Initialize the memory map for hole in the range [memory_end, + * section_end]. + * Append the pages in this hole to the highest zone in the last + * node. + * The call to init_unavailable_range() is outside the ifdef to + * silence the compiler warining about zone_id set but not used; + * for FLATMEM it is a nop anyway */ - end_pfn = round_up(zone_end_pfn, PAGES_PER_SECTION); + end_pfn = round_up(end_pfn, PAGES_PER_SECTION); if (hole_pfn < end_pfn) - pgcnt += init_unavailable_range(hole_pfn, end_pfn, - zone_id, nid); #endif - - if (pgcnt) - pr_info(" %s zone: %llu pages in unavailable ranges\n", - zone->name, pgcnt); + init_unavailable_range(hole_pfn, end_pfn, zone_id, nid); } static int zone_batchsize(struct zone *zone) @@ -7254,7 +7275,6 @@ static void __init free_area_init_core(s set_pageblock_order(); setup_usemap(zone); init_currently_empty_zone(zone, zone->zone_start_pfn, size); - memmap_init_zone(zone); } } @@ -7780,6 +7800,8 @@ void __init free_area_init(unsigned long node_set_state(nid, N_MEMORY); check_for_memory(pgdat, nid); } + + memmap_init(); } static int __init cmdline_parse_core(char *p, unsigned long *core, _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 003/192] mm/page_alloc: correct return value of populated elements if bulk array is populated 2021-06-29 2:32 incoming Andrew Morton 2021-06-29 2:33 ` [patch 001/192] mm/gup: fix try_grab_compound_head() race with split_huge_page() Andrew Morton 2021-06-29 2:33 ` [patch 002/192] mm/page_alloc: fix memory map initialization for descending nodes Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 004/192] kthread: switch to new kerneldoc syntax for named variable macro argument Andrew Morton ` (188 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, brouer, dan.carpenter, davej, linux-mm, mgorman, mm-commits, stable, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: correct return value of populated elements if bulk array is populated Dave Jones reported the following This made it into 5.13 final, and completely breaks NFSD for me (Serving tcp v3 mounts). Existing mounts on clients hang, as do new mounts from new clients. Rebooting the server back to rc7 everything recovers. The commit b3b64ebd3822 ("mm/page_alloc: do bulk array bounds check after checking populated elements") returns the wrong value if the array is already populated which is interpreted as an allocation failure. Dave reported this fixes his problem and it also passed a test running dbench over NFS. Link: https://lkml.kernel.org/r/20210628150219.GC3840@techsingularity.net Fixes: b3b64ebd3822 ("mm/page_alloc: do bulk array bounds check after checking populated elements") Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Reported-by: Dave Jones <davej@codemonkey.org.uk> Tested-by: Dave Jones <davej@codemonkey.org.uk> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> [5.13+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page_alloc.c~mm-page_alloc-correct-return-value-of-populated-elements-if-bulk-array-is-populated +++ a/mm/page_alloc.c @@ -5058,7 +5058,7 @@ unsigned long __alloc_pages_bulk(gfp_t g /* Already populated array? */ if (unlikely(page_array && nr_pages - nr_populated == 0)) - return 0; + return nr_populated; /* Use the single page allocator for one page. */ if (nr_pages - nr_populated == 1) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 004/192] kthread: switch to new kerneldoc syntax for named variable macro argument 2021-06-29 2:32 incoming Andrew Morton ` (2 preceding siblings ...) 2021-06-29 2:33 ` [patch 003/192] mm/page_alloc: correct return value of populated elements if bulk array is populated Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 005/192] kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Andrew Morton ` (187 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, axboe, Felix.Kuehling, j.neuschaefer, linux-mm, mm-commits, peterz, torvalds, valentin.schneider From: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Subject: kthread: switch to new kerneldoc syntax for named variable macro argument The syntax without dots is available since commit 43756e347f21 ("scripts/kernel-doc: Add support for named variable macro arguments"). The same HTML output is produced with and without this patch. Link: https://lkml.kernel.org/r/20210513161702.1721039-1-j.neuschaefer@gmx.net Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Felix Kuehling <Felix.Kuehling@amd.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/kthread.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/kthread.h~kthread-switch-to-new-kerneldoc-syntax-for-named-variable-macro-argument +++ a/include/linux/kthread.h @@ -18,7 +18,7 @@ struct task_struct *kthread_create_on_no * @threadfn: the function to run in the thread * @data: data pointer for @threadfn() * @namefmt: printf-style format string for the thread name - * @arg...: arguments for @namefmt. + * @arg: arguments for @namefmt. * * This macro will create a kthread on the current node, leaving it in * the stopped state. This is just a helper for kthread_create_on_node(); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 005/192] kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() 2021-06-29 2:32 incoming Andrew Morton ` (3 preceding siblings ...) 2021-06-29 2:33 ` [patch 004/192] kthread: switch to new kerneldoc syntax for named variable macro argument Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 006/192] ia64: headers: drop duplicated words Andrew Morton ` (186 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, jenhaochen, linux-mm, liumartin, minchan, mm-commits, nathan, ndesaulniers, oleg, pmladek, tj, torvalds From: Petr Mladek <pmladek@suse.com> Subject: kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() kthread_mod_delayed_work() might race with kthread_cancel_delayed_work_sync() or another kthread_mod_delayed_work() call. The function lets the other operation win when it sees work->canceling counter set. And it returns @false. But it should return @true as it is done by the related workqueue API, see mod_delayed_work_on(). The reason is that the return value might be used for reference counting. It has to distinguish the case when the number of queued works has changed or stayed the same. The change is safe. kthread_mod_delayed_work() return value is not checked anywhere at the moment. Link: https://lore.kernel.org/r/20210521163526.GA17916@redhat.com Link: https://lkml.kernel.org/r/20210610133051.15337-4-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Reported-by: Oleg Nesterov <oleg@redhat.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Minchan Kim <minchan@google.com> Cc: <jenhaochen@google.com> Cc: Martin Liu <liumartin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/kthread.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) --- a/kernel/kthread.c~kthread_worker-fix-return-value-when-kthread_mod_delayed_work-races-with-kthread_cancel_delayed_work_sync +++ a/kernel/kthread.c @@ -1156,14 +1156,14 @@ static bool __kthread_cancel_work(struct * modify @dwork's timer so that it expires after @delay. If @delay is zero, * @work is guaranteed to be queued immediately. * - * Return: %true if @dwork was pending and its timer was modified, - * %false otherwise. + * Return: %false if @dwork was idle and queued, %true otherwise. * * A special case is when the work is being canceled in parallel. * It might be caused either by the real kthread_cancel_delayed_work_sync() * or yet another kthread_mod_delayed_work() call. We let the other command - * win and return %false here. The caller is supposed to synchronize these - * operations a reasonable way. + * win and return %true here. The return value can be used for reference + * counting and the number of queued works stays the same. Anyway, the caller + * is supposed to synchronize these operations a reasonable way. * * This function is safe to call from any context including IRQ handler. * See __kthread_cancel_work() and kthread_delayed_work_timer_fn() @@ -1175,13 +1175,15 @@ bool kthread_mod_delayed_work(struct kth { struct kthread_work *work = &dwork->work; unsigned long flags; - int ret = false; + int ret; raw_spin_lock_irqsave(&worker->lock, flags); /* Do not bother with canceling when never queued. */ - if (!work->worker) + if (!work->worker) { + ret = false; goto fast_queue; + } /* Work must not be used with >1 worker, see kthread_queue_work() */ WARN_ON_ONCE(work->worker != worker); @@ -1199,8 +1201,11 @@ bool kthread_mod_delayed_work(struct kth * be used for reference counting. */ kthread_cancel_delayed_work_timer(work, &flags); - if (work->canceling) + if (work->canceling) { + /* The number of works in the queue does not change. */ + ret = true; goto out; + } ret = __kthread_cancel_work(work); fast_queue: _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 006/192] ia64: headers: drop duplicated words 2021-06-29 2:32 incoming Andrew Morton ` (4 preceding siblings ...) 2021-06-29 2:33 ` [patch 005/192] kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 007/192] ia64: mca_drv: fix incorrect array size calculation Andrew Morton ` (185 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, fenghua.yu, linux-mm, mm-commits, rdunlap, torvalds From: Randy Dunlap <rdunlap@infradead.org> Subject: ia64: headers: drop duplicated words Delete the repeated words "to" and "the". Link: https://lkml.kernel.org/r/20210507184837.10754-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/ia64/include/asm/pal.h | 2 +- arch/ia64/include/asm/spinlock.h | 2 +- arch/ia64/include/asm/uv/uv_hub.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) --- a/arch/ia64/include/asm/pal.h~ia64-headers-drop-duplicated-words +++ a/arch/ia64/include/asm/pal.h @@ -1086,7 +1086,7 @@ static inline long ia64_pal_freq_base(un /* * Get the ratios for processor frequency, bus frequency and interval timer to - * to base frequency of the platform + * the base frequency of the platform */ static inline s64 ia64_pal_freq_ratios (struct pal_freq_ratio *proc_ratio, struct pal_freq_ratio *bus_ratio, --- a/arch/ia64/include/asm/spinlock.h~ia64-headers-drop-duplicated-words +++ a/arch/ia64/include/asm/spinlock.h @@ -26,7 +26,7 @@ * the queue, and the other indicating the current tail. The lock is acquired * by atomically noting the tail and incrementing it by one (thus adding * ourself to the queue and noting our position), then waiting until the head - * becomes equal to the the initial value of the tail. + * becomes equal to the initial value of the tail. * The pad bits in the middle are used to prevent the next_ticket number * overflowing into the now_serving number. * --- a/arch/ia64/include/asm/uv/uv_hub.h~ia64-headers-drop-duplicated-words +++ a/arch/ia64/include/asm/uv/uv_hub.h @@ -257,7 +257,7 @@ static inline int uv_numa_blade_id(void) return 0; } -/* Convert a cpu number to the the UV blade number */ +/* Convert a cpu number to the UV blade number */ static inline int uv_cpu_to_blade_id(int cpu) { return 0; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 007/192] ia64: mca_drv: fix incorrect array size calculation 2021-06-29 2:32 incoming Andrew Morton ` (5 preceding siblings ...) 2021-06-29 2:33 ` [patch 006/192] ia64: headers: drop duplicated words Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 008/192] streamline_config.pl: make spacing consistent Andrew Morton ` (184 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, arnd, linux-mm, masahiroy, mm-commits, rdunlap, torvalds From: Arnd Bergmann <arnd@arndb.de> Subject: ia64: mca_drv: fix incorrect array size calculation gcc points out a mistake in the mca driver that goes back to before the git history: arch/ia64/kernel/mca_drv.c: In function 'init_record_index_pools': arch/ia64/kernel/mca_drv.c:346:54: error: expression does not compute the number of elements in this array; element typ e is 'int', not 'size_t' {aka 'long unsigned int'} [-Werror=sizeof-array-div] 346 | for (i = 1; i < sizeof sal_log_sect_min_sizes/sizeof(size_t); i++) | ^ This is the same as sizeof(size_t), which is two shorter than the actual array. Use the ARRAY_SIZE() macro to get the correct calculation instead. Link: https://lkml.kernel.org/r/20210514214123.875971-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/ia64/kernel/mca_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/ia64/kernel/mca_drv.c~ia64-mca_drv-fix-incorrect-array-size-calculation +++ a/arch/ia64/kernel/mca_drv.c @@ -343,7 +343,7 @@ init_record_index_pools(void) /* - 2 - */ sect_min_size = sal_log_sect_min_sizes[0]; - for (i = 1; i < sizeof sal_log_sect_min_sizes/sizeof(size_t); i++) + for (i = 1; i < ARRAY_SIZE(sal_log_sect_min_sizes); i++) if (sect_min_size > sal_log_sect_min_sizes[i]) sect_min_size = sal_log_sect_min_sizes[i]; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 008/192] streamline_config.pl: make spacing consistent 2021-06-29 2:32 incoming Andrew Morton ` (6 preceding siblings ...) 2021-06-29 2:33 ` [patch 007/192] ia64: mca_drv: fix incorrect array size calculation Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 009/192] streamline_config.pl: add softtabstop=4 for vim users Andrew Morton ` (183 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, linux-mm, masahiroy, mm-commits, rostedt, torvalds, warthog9 From: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Subject: streamline_config.pl: make spacing consistent Patch series "streamline_config.pl: Fix Perl spacing". Talking with John Hawley about how vim and emacs deal with Perl files with respect to tabs and spaces, I found that some of my Perl code in the kernel had inconsistent spacing. The way emacs handles Perl by default is to use 4 spaces per indent, but make all 8 spaces into a single tab. Vim does not do this by default. But if you add the vim variable control: # vim: softtabstop=4 to a perl file, it makes vim behave the same way as emacs. The first patch is to change all 8 spaces into a single tab (mostly from people editing the file with vim). The next patch adds the softtabstop variable to make vim act like emacs by default. This patch (of 2): As Perl code tends to have 4 space indentation, but uses tabs for every 8 spaces, make that consistent in the streamline_config.pl code. Replace all 8 spaces with a single tab. Link: https://lkml.kernel.org/r/20210322214032.133596267@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: "John (Warthog9) Hawley" <warthog9@kernel.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- scripts/kconfig/streamline_config.pl | 74 ++++++++++++------------- 1 file changed, 37 insertions(+), 37 deletions(-) --- a/scripts/kconfig/streamline_config.pl~streamline_configpl-make-spacing-consistent +++ a/scripts/kconfig/streamline_config.pl @@ -601,12 +601,12 @@ if (defined($ENV{'LMC_KEEP'})) { sub in_preserved_kconfigs { my $kconfig = $config2kfile{$_[0]}; if (!defined($kconfig)) { - return 0; + return 0; } foreach my $excl (@preserved_kconfigs) { - if($kconfig =~ /^$excl/) { - return 1; - } + if($kconfig =~ /^$excl/) { + return 1; + } } return 0; } @@ -629,52 +629,52 @@ foreach my $line (@config_file) { } if (/CONFIG_MODULE_SIG_KEY="(.+)"/) { - my $orig_cert = $1; - my $default_cert = "certs/signing_key.pem"; + my $orig_cert = $1; + my $default_cert = "certs/signing_key.pem"; - # Check that the logic in this script still matches the one in Kconfig - if (!defined($depends{"MODULE_SIG_KEY"}) || - $depends{"MODULE_SIG_KEY"} !~ /"\Q$default_cert\E"/) { - print STDERR "WARNING: MODULE_SIG_KEY assertion failure, ", - "update needed to ", __FILE__, " line ", __LINE__, "\n"; - print; - } elsif ($orig_cert ne $default_cert && ! -f $orig_cert) { - print STDERR "Module signature verification enabled but ", - "module signing key \"$orig_cert\" not found. Resetting ", - "signing key to default value.\n"; - print "CONFIG_MODULE_SIG_KEY=\"$default_cert\"\n"; - } else { - print; - } - next; + # Check that the logic in this script still matches the one in Kconfig + if (!defined($depends{"MODULE_SIG_KEY"}) || + $depends{"MODULE_SIG_KEY"} !~ /"\Q$default_cert\E"/) { + print STDERR "WARNING: MODULE_SIG_KEY assertion failure, ", + "update needed to ", __FILE__, " line ", __LINE__, "\n"; + print; + } elsif ($orig_cert ne $default_cert && ! -f $orig_cert) { + print STDERR "Module signature verification enabled but ", + "module signing key \"$orig_cert\" not found. Resetting ", + "signing key to default value.\n"; + print "CONFIG_MODULE_SIG_KEY=\"$default_cert\"\n"; + } else { + print; + } + next; } if (/CONFIG_SYSTEM_TRUSTED_KEYS="(.+)"/) { - my $orig_keys = $1; + my $orig_keys = $1; - if (! -f $orig_keys) { - print STDERR "System keyring enabled but keys \"$orig_keys\" ", - "not found. Resetting keys to default value.\n"; - print "CONFIG_SYSTEM_TRUSTED_KEYS=\"\"\n"; - } else { - print; - } - next; + if (! -f $orig_keys) { + print STDERR "System keyring enabled but keys \"$orig_keys\" ", + "not found. Resetting keys to default value.\n"; + print "CONFIG_SYSTEM_TRUSTED_KEYS=\"\"\n"; + } else { + print; + } + next; } if (/^(CONFIG.*)=(m|y)/) { - if (in_preserved_kconfigs($1)) { - dprint "Preserve config $1"; - print; - next; - } + if (in_preserved_kconfigs($1)) { + dprint "Preserve config $1"; + print; + next; + } if (defined($configs{$1})) { if ($localyesconfig) { - $setconfigs{$1} = 'y'; + $setconfigs{$1} = 'y'; print "$1=y\n"; next; } else { - $setconfigs{$1} = $2; + $setconfigs{$1} = $2; } } elsif ($2 eq "m") { print "# $1 is not set\n"; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 009/192] streamline_config.pl: add softtabstop=4 for vim users 2021-06-29 2:32 incoming Andrew Morton ` (7 preceding siblings ...) 2021-06-29 2:33 ` [patch 008/192] streamline_config.pl: make spacing consistent Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 010/192] scripts/spelling.txt: add more spellings to spelling.txt Andrew Morton ` (182 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, linux-mm, masahiroy, mm-commits, rostedt, torvalds, warthog9 From: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Subject: streamline_config.pl: add softtabstop=4 for vim users The tab stop for Perl files is by default (at least in emacs) to be 4 spaces, where a tab is used for all 8 spaces. Add a local variable comment to make vim do the same by default, and this will help keep the file consistent in the future when others edit it via vim and not emacs. Link: https://lkml.kernel.org/r/20210322214032.293992979@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: "John (Warthog9) Hawley" <warthog9@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- scripts/kconfig/streamline_config.pl | 2 ++ 1 file changed, 2 insertions(+) --- a/scripts/kconfig/streamline_config.pl~streamline_configpl-add-softtabstop=4-for-vim-users +++ a/scripts/kconfig/streamline_config.pl @@ -702,3 +702,5 @@ foreach my $module (keys(%modules)) { print STDERR "\n"; } } + +# vim: softtabstop=4 _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 010/192] scripts/spelling.txt: add more spellings to spelling.txt 2021-06-29 2:32 incoming Andrew Morton ` (8 preceding siblings ...) 2021-06-29 2:33 ` [patch 009/192] streamline_config.pl: add softtabstop=4 for vim users Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 011/192] ntfs: fix validity check for file name attribute Andrew Morton ` (181 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, colin.king, linux-mm, mm-commits, torvalds From: Colin Ian King <colin.king@canonical.com> Subject: scripts/spelling.txt: add more spellings to spelling.txt Here are some of the more common spelling mistakes and typos that I've found while fixing up spelling mistakes in the kernel in the past few months. Link: https://lkml.kernel.org/r/20210514093655.8829-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- scripts/spelling.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/scripts/spelling.txt~scripts-spellingtxt-add-more-spellings-to-spellingtxt +++ a/scripts/spelling.txt @@ -22,6 +22,7 @@ absolut||absolute absoulte||absolute acccess||access acceess||access +accelaration||acceleration acceleratoin||acceleration accelleration||acceleration accesing||accessing @@ -264,6 +265,7 @@ calucate||calculate calulate||calculate cancelation||cancellation cancle||cancel +canot||cannot capabilites||capabilities capabilties||capabilities capabilty||capability @@ -494,7 +496,10 @@ digial||digital dimention||dimension dimesions||dimensions diconnected||disconnected +disabed||disabled +disble||disable disgest||digest +disired||desired dispalying||displaying diplay||display directon||direction @@ -710,6 +715,7 @@ havind||having heirarchically||hierarchically heirarchy||hierarchy helpfull||helpful +hearbeat||heartbeat heterogenous||heterogeneous hexdecimal||hexadecimal hybernate||hibernate @@ -989,6 +995,7 @@ notications||notifications notifcations||notifications notifed||notified notity||notify +nubmer||number numebr||number numner||number obtaion||obtain @@ -1014,8 +1021,10 @@ ommiting||omitting ommitted||omitted onself||oneself ony||only +openning||opening operatione||operation opertaions||operations +opportunies||opportunities optionnal||optional optmizations||optimizations orientatied||orientated @@ -1111,6 +1120,7 @@ prefitler||prefilter preform||perform premption||preemption prepaired||prepared +prepate||prepare preperation||preparation preprare||prepare pressre||pressure @@ -1123,6 +1133,7 @@ privilaged||privileged privilage||privilege priviledge||privilege priviledges||privileges +privleges||privileges probaly||probably procceed||proceed proccesors||processors @@ -1167,6 +1178,7 @@ promixity||proximity psudo||pseudo psuedo||pseudo psychadelic||psychedelic +purgable||purgeable pwoer||power queing||queuing quering||querying @@ -1180,6 +1192,7 @@ receieve||receive recepient||recipient recevied||received receving||receiving +recievd||received recieved||received recieve||receive reciever||receiver @@ -1228,6 +1241,7 @@ reponse||response representaion||representation reqeust||request reqister||register +requed||requeued requestied||requested requiere||require requirment||requirement @@ -1332,6 +1346,7 @@ singal||signal singed||signed sleeped||slept sliped||slipped +softwade||software softwares||software soley||solely souce||source @@ -1510,6 +1525,7 @@ unintialized||uninitialized unitialized||uninitialized unkmown||unknown unknonw||unknown +unknouwn||unknown unknow||unknown unkown||unknown unamed||unnamed _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 011/192] ntfs: fix validity check for file name attribute 2021-06-29 2:32 incoming Andrew Morton ` (9 preceding siblings ...) 2021-06-29 2:33 ` [patch 010/192] scripts/spelling.txt: add more spellings to spelling.txt Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 012/192] squashfs: add option to panic on errors Andrew Morton ` (180 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, anton, desmondcheongzx, gregkh, linux-mm, mm-commits, skhan, stable, torvalds From: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> Subject: ntfs: fix validity check for file name attribute When checking the file name attribute, we want to ensure that it fits within the bounds of ATTR_RECORD. To do this, we should check that (attr record + file name offset + file name length) < (attr record + attr record length). However, the original check did not include the file name offset in the calculation. This means that corrupted on-disk metadata might not caught by the incorrect file name check, and lead to an invalid memory access. An example can be seen in the crash report of a memory corruption error found by Syzbot: https://syzkaller.appspot.com/bug?id=a1a1e379b225812688566745c3e2f7242bffc246 Adding the file name offset to the validity check fixes this error and passes the Syzbot reproducer test. Link: https://lkml.kernel.org/r/20210614050540.289494-1-desmondcheongzx@gmail.com Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> Reported-by: syzbot+213ac8bb98f7f4420840@syzkaller.appspotmail.com Tested-by: syzbot+213ac8bb98f7f4420840@syzkaller.appspotmail.com Acked-by: Anton Altaparmakov <anton@tuxera.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ntfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ntfs/inode.c~ntfs-fix-validity-check-for-file-name-attribute +++ a/fs/ntfs/inode.c @@ -477,7 +477,7 @@ err_corrupt_attr: } file_name_attr = (FILE_NAME_ATTR*)((u8*)attr + le16_to_cpu(attr->data.resident.value_offset)); - p2 = (u8*)attr + le32_to_cpu(attr->data.resident.value_length); + p2 = (u8 *)file_name_attr + le32_to_cpu(attr->data.resident.value_length); if (p2 < (u8*)attr || p2 > p) goto err_corrupt_attr; /* This attribute is ok, but is it in the $Extend directory? */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 012/192] squashfs: add option to panic on errors 2021-06-29 2:32 incoming Andrew Morton ` (10 preceding siblings ...) 2021-06-29 2:33 ` [patch 011/192] ntfs: fix validity check for file name attribute Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:33 ` [patch 013/192] ocfs2: remove unnecessary INIT_LIST_HEAD() Andrew Morton ` (179 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, linux-mm, mm-commits, phillip, torvalds, vincent.whitchurch From: Vincent Whitchurch <vincent.whitchurch@axis.com> Subject: squashfs: add option to panic on errors Add an errors=panic mount option to make squashfs trigger a panic when errors are encountered, similar to several other filesystems. This allows a kernel dump to be saved using which the corruption can be analysed and debugged. Inspired by a pre-fs_context patch by Anton Eliasson. Link: https://lkml.kernel.org/r/20210527125019.14511-1-vincent.whitchurch@axis.com Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/squashfs/block.c | 5 + fs/squashfs/squashfs_fs_sb.h | 1 fs/squashfs/super.c | 86 +++++++++++++++++++++++++++++++++ 3 files changed, 91 insertions(+), 1 deletion(-) --- a/fs/squashfs/block.c~squashfs-add-option-to-panic-on-errors +++ a/fs/squashfs/block.c @@ -226,8 +226,11 @@ out_free_bio: bio_free_pages(bio); bio_put(bio); out: - if (res < 0) + if (res < 0) { ERROR("Failed to read block 0x%llx: %d\n", index, res); + if (msblk->panic_on_errors) + panic("squashfs read failed"); + } return res; } --- a/fs/squashfs/squashfs_fs_sb.h~squashfs-add-option-to-panic-on-errors +++ a/fs/squashfs/squashfs_fs_sb.h @@ -65,5 +65,6 @@ struct squashfs_sb_info { unsigned int fragments; int xattr_ids; unsigned int ids; + bool panic_on_errors; }; #endif --- a/fs/squashfs/super.c~squashfs-add-option-to-panic-on-errors +++ a/fs/squashfs/super.c @@ -18,9 +18,11 @@ #include <linux/fs.h> #include <linux/fs_context.h> +#include <linux/fs_parser.h> #include <linux/vfs.h> #include <linux/slab.h> #include <linux/mutex.h> +#include <linux/seq_file.h> #include <linux/pagemap.h> #include <linux/init.h> #include <linux/module.h> @@ -37,6 +39,51 @@ static struct file_system_type squashfs_fs_type; static const struct super_operations squashfs_super_ops; +enum Opt_errors { + Opt_errors_continue, + Opt_errors_panic, +}; + +enum squashfs_param { + Opt_errors, +}; + +struct squashfs_mount_opts { + enum Opt_errors errors; +}; + +static const struct constant_table squashfs_param_errors[] = { + {"continue", Opt_errors_continue }, + {"panic", Opt_errors_panic }, + {} +}; + +static const struct fs_parameter_spec squashfs_fs_parameters[] = { + fsparam_enum("errors", Opt_errors, squashfs_param_errors), + {} +}; + +static int squashfs_parse_param(struct fs_context *fc, struct fs_parameter *param) +{ + struct squashfs_mount_opts *opts = fc->fs_private; + struct fs_parse_result result; + int opt; + + opt = fs_parse(fc, squashfs_fs_parameters, param, &result); + if (opt < 0) + return opt; + + switch (opt) { + case Opt_errors: + opts->errors = result.uint_32; + break; + default: + return -EINVAL; + } + + return 0; +} + static const struct squashfs_decompressor *supported_squashfs_filesystem( struct fs_context *fc, short major, short minor, short id) @@ -67,6 +114,7 @@ static const struct squashfs_decompresso static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc) { + struct squashfs_mount_opts *opts = fc->fs_private; struct squashfs_sb_info *msblk; struct squashfs_super_block *sblk = NULL; struct inode *root; @@ -85,6 +133,8 @@ static int squashfs_fill_super(struct su } msblk = sb->s_fs_info; + msblk->panic_on_errors = (opts->errors == Opt_errors_panic); + msblk->devblksize = sb_min_blocksize(sb, SQUASHFS_DEVBLK_SIZE); msblk->devblksize_log2 = ffz(~msblk->devblksize); @@ -350,18 +400,52 @@ static int squashfs_get_tree(struct fs_c static int squashfs_reconfigure(struct fs_context *fc) { + struct super_block *sb = fc->root->d_sb; + struct squashfs_sb_info *msblk = sb->s_fs_info; + struct squashfs_mount_opts *opts = fc->fs_private; + sync_filesystem(fc->root->d_sb); fc->sb_flags |= SB_RDONLY; + + msblk->panic_on_errors = (opts->errors == Opt_errors_panic); + return 0; } +static void squashfs_free_fs_context(struct fs_context *fc) +{ + kfree(fc->fs_private); +} + static const struct fs_context_operations squashfs_context_ops = { .get_tree = squashfs_get_tree, + .free = squashfs_free_fs_context, + .parse_param = squashfs_parse_param, .reconfigure = squashfs_reconfigure, }; +static int squashfs_show_options(struct seq_file *s, struct dentry *root) +{ + struct super_block *sb = root->d_sb; + struct squashfs_sb_info *msblk = sb->s_fs_info; + + if (msblk->panic_on_errors) + seq_puts(s, ",errors=panic"); + else + seq_puts(s, ",errors=continue"); + + return 0; +} + static int squashfs_init_fs_context(struct fs_context *fc) { + struct squashfs_mount_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return -ENOMEM; + + fc->fs_private = opts; fc->ops = &squashfs_context_ops; return 0; } @@ -481,6 +565,7 @@ static struct file_system_type squashfs_ .owner = THIS_MODULE, .name = "squashfs", .init_fs_context = squashfs_init_fs_context, + .parameters = squashfs_fs_parameters, .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV }; @@ -491,6 +576,7 @@ static const struct super_operations squ .free_inode = squashfs_free_inode, .statfs = squashfs_statfs, .put_super = squashfs_put_super, + .show_options = squashfs_show_options, }; module_init(init_squashfs_fs); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 013/192] ocfs2: remove unnecessary INIT_LIST_HEAD() 2021-06-29 2:32 incoming Andrew Morton ` (11 preceding siblings ...) 2021-06-29 2:33 ` [patch 012/192] squashfs: add option to panic on errors Andrew Morton @ 2021-06-29 2:33 ` Andrew Morton 2021-06-29 2:34 ` [patch 014/192] ocfs2: fix snprintf() checking Andrew Morton ` (178 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:33 UTC (permalink / raw) To: akpm, gechangwei, ghe, hulkci, jiangqi903, jlbec, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds, yangyingliang From: Yang Yingliang <yangyingliang@huawei.com> Subject: ocfs2: remove unnecessary INIT_LIST_HEAD() The list_head o2hb_node_events is initialized statically. It is unnecessary to initialize by INIT_LIST_HEAD(). Link: https://lkml.kernel.org/r/20210511115847.3817395-1-yangyingliang@huawei.com Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reported-by: Hulk Robot <hulkci@huawei.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/cluster/heartbeat.c | 2 -- 1 file changed, 2 deletions(-) --- a/fs/ocfs2/cluster/heartbeat.c~ocfs2-remove-unnecessary-init_list_head +++ a/fs/ocfs2/cluster/heartbeat.c @@ -1442,8 +1442,6 @@ void o2hb_init(void) for (i = 0; i < ARRAY_SIZE(o2hb_live_slots); i++) INIT_LIST_HEAD(&o2hb_live_slots[i]); - INIT_LIST_HEAD(&o2hb_node_events); - memset(o2hb_live_node_bitmap, 0, sizeof(o2hb_live_node_bitmap)); memset(o2hb_region_bitmap, 0, sizeof(o2hb_region_bitmap)); memset(o2hb_live_region_bitmap, 0, sizeof(o2hb_live_region_bitmap)); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 014/192] ocfs2: fix snprintf() checking 2021-06-29 2:32 incoming Andrew Morton ` (12 preceding siblings ...) 2021-06-29 2:33 ` [patch 013/192] ocfs2: remove unnecessary INIT_LIST_HEAD() Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 015/192] ocfs2: remove redundant assignment to pointer queue Andrew Morton ` (177 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, dan.carpenter, gechangwei, ghe, jlbec, joseph.qi, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds From: Dan Carpenter <dan.carpenter@oracle.com> Subject: ocfs2: fix snprintf() checking The snprintf() function returns the number of bytes which would have been printed if the buffer was large enough. In other words it can return ">= remain" but this code assumes it returns "== remain". The run time impact of this bug is not very severe. The next iteration through the loop would trigger a WARN() when we pass a negative limit to snprintf(). We would then return success instead of -E2BIG. The kernel implementation of snprintf() will never return negatives so there is no need to check and I have deleted that dead code. Link: https://lkml.kernel.org/r/20210511135350.GV1955@kadam Fixes: a860f6eb4c6a ("ocfs2: sysfile interfaces for online file check") Fixes: 74ae4e104dfc ("ocfs2: Create stack glue sysfs files.") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/filecheck.c | 6 +----- fs/ocfs2/stackglue.c | 8 ++------ 2 files changed, 3 insertions(+), 11 deletions(-) --- a/fs/ocfs2/filecheck.c~ocfs2-fix-snprintf-checking +++ a/fs/ocfs2/filecheck.c @@ -326,11 +326,7 @@ static ssize_t ocfs2_filecheck_attr_show ret = snprintf(buf + total, remain, "%lu\t\t%u\t%s\n", p->fe_ino, p->fe_done, ocfs2_filecheck_error(p->fe_status)); - if (ret < 0) { - total = ret; - break; - } - if (ret == remain) { + if (ret >= remain) { /* snprintf() didn't fit */ total = -E2BIG; break; --- a/fs/ocfs2/stackglue.c~ocfs2-fix-snprintf-checking +++ a/fs/ocfs2/stackglue.c @@ -500,11 +500,7 @@ static ssize_t ocfs2_loaded_cluster_plug list_for_each_entry(p, &ocfs2_stack_list, sp_list) { ret = snprintf(buf, remain, "%s\n", p->sp_name); - if (ret < 0) { - total = ret; - break; - } - if (ret == remain) { + if (ret >= remain) { /* snprintf() didn't fit */ total = -E2BIG; break; @@ -531,7 +527,7 @@ static ssize_t ocfs2_active_cluster_plug if (active_stack) { ret = snprintf(buf, PAGE_SIZE, "%s\n", active_stack->sp_name); - if (ret == PAGE_SIZE) + if (ret >= PAGE_SIZE) ret = -E2BIG; } spin_unlock(&ocfs2_stack_lock); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 015/192] ocfs2: remove redundant assignment to pointer queue 2021-06-29 2:32 incoming Andrew Morton ` (13 preceding siblings ...) 2021-06-29 2:34 ` [patch 014/192] ocfs2: fix snprintf() checking Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 016/192] ocfs2: remove repeated uptodate check for buffer Andrew Morton ` (176 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, colin.king, gechangwei, ghe, jlbec, joseph.qi, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds From: Colin Ian King <colin.king@canonical.com> Subject: ocfs2: remove redundant assignment to pointer queue The pointer queue is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Link: https://lkml.kernel.org/r/20210513113957.57539-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/dlm/dlmmaster.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ocfs2/dlm/dlmmaster.c~ocfs2-remove-redundant-assignment-to-pointer-queue +++ a/fs/ocfs2/dlm/dlmmaster.c @@ -2977,7 +2977,7 @@ static u8 dlm_pick_migration_target(stru struct dlm_lock_resource *res) { enum dlm_lockres_list idx; - struct list_head *queue = &res->granted; + struct list_head *queue; struct dlm_lock *lock; int noderef; u8 nodenum = O2NM_MAX_NODES; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 016/192] ocfs2: remove repeated uptodate check for buffer 2021-06-29 2:32 incoming Andrew Morton ` (14 preceding siblings ...) 2021-06-29 2:34 ` [patch 015/192] ocfs2: remove redundant assignment to pointer queue Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 017/192] ocfs2: replace simple_strtoull() with kstrtoull() Andrew Morton ` (175 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, gechangwei, ghe, jlbec, joseph.qi, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds, wanjiabing From: Wan Jiabing <wanjiabing@vivo.com> Subject: ocfs2: remove repeated uptodate check for buffer In commit 60f91826ca62 ("buffer: Avoid setting buffer bits that are already set"), function set_buffer_##name was added a test_bit() to check buffer, which is the same as function buffer_##name. The !buffer_uptodate(bh) here is a repeated check. Remove it. Link: https://lkml.kernel.org/r/20210425025702.13628-1-wanjiabing@vivo.com Signed-off-by: Wan Jiabing <wanjiabing@vivo.com> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/aops.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/fs/ocfs2/aops.c~ocfs2-remove-repeated-uptodate-check-for-buffer +++ a/fs/ocfs2/aops.c @@ -632,8 +632,7 @@ int ocfs2_map_page_blocks(struct page *p } if (PageUptodate(page)) { - if (!buffer_uptodate(bh)) - set_buffer_uptodate(bh); + set_buffer_uptodate(bh); } else if (!buffer_uptodate(bh) && !buffer_delay(bh) && !buffer_new(bh) && ocfs2_should_read_blk(inode, page, block_start) && _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 017/192] ocfs2: replace simple_strtoull() with kstrtoull() 2021-06-29 2:32 incoming Andrew Morton ` (15 preceding siblings ...) 2021-06-29 2:34 ` [patch 016/192] ocfs2: remove repeated uptodate check for buffer Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 018/192] ocfs2: remove redundant initialization of variable ret Andrew Morton ` (174 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, chenhuang5, gechangwei, ghe, jiangqi903, jlbec, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds From: Chen Huang <chenhuang5@huawei.com> Subject: ocfs2: replace simple_strtoull() with kstrtoull() simple_strtoull() is deprecated in some situation since it does not check for the range overflow, use kstrtoull() instead. Link: https://lkml.kernel.org/r/20210526092020.554341-3-chenhuang5@huawei.com Signed-off-by: Chen Huang <chenhuang5@huawei.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/cluster/heartbeat.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/fs/ocfs2/cluster/heartbeat.c~ocfs2-replaced-simple_strtoull-with-kstrtoull +++ a/fs/ocfs2/cluster/heartbeat.c @@ -1596,12 +1596,13 @@ static ssize_t o2hb_region_start_block_s struct o2hb_region *reg = to_o2hb_region(item); unsigned long long tmp; char *p = (char *)page; + ssize_t ret; if (reg->hr_bdev) return -EINVAL; - tmp = simple_strtoull(p, &p, 0); - if (!p || (*p && (*p != '\n'))) + ret = kstrtoull(p, 0, &tmp); + if (ret) return -EINVAL; reg->hr_start_block = tmp; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 018/192] ocfs2: remove redundant initialization of variable ret 2021-06-29 2:32 incoming Andrew Morton ` (16 preceding siblings ...) 2021-06-29 2:34 ` [patch 017/192] ocfs2: replace simple_strtoull() with kstrtoull() Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 019/192] kernel: watchdog: modify the explanation related to watchdog thread Andrew Morton ` (173 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, colin.king, gechangwei, ghe, jlbec, joseph.qi, junxiao.bi, linux-mm, mark, mm-commits, piaojun, torvalds From: Colin Ian King <colin.king@canonical.com> Subject: ocfs2: remove redundant initialization of variable ret The variable ret is being initialized with a value that is never read, the assignment is redundant and can be removed. Addresses-Coverity: ("Unused value") Link: https://lkml.kernel.org/r/20210613135148.74658-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/ocfs2/cluster/nodemanager.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ocfs2/cluster/nodemanager.c~ocfs2-remove-redundant-initialization-of-variable-ret +++ a/fs/ocfs2/cluster/nodemanager.c @@ -824,7 +824,7 @@ static void __exit exit_o2nm(void) static int __init init_o2nm(void) { - int ret = -1; + int ret; o2hb_init(); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 019/192] kernel: watchdog: modify the explanation related to watchdog thread 2021-06-29 2:32 incoming Andrew Morton ` (17 preceding siblings ...) 2021-06-29 2:34 ` [patch 018/192] ocfs2: remove redundant initialization of variable ret Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 020/192] doc: " Andrew Morton ` (172 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, corbet, gpiccoli, joe, keescook, linux-mm, mchehab+huawei, mm-commits, pmladek, qais.yousef, rdunlap, santosh, steve, torvalds, vbabka, wangqing From: Wang Qing <wangqing@vivo.com> Subject: kernel: watchdog: modify the explanation related to watchdog thread The watchdog thread has been replaced by cpu_stop_work, modify the explanation related. Link: https://lkml.kernel.org/r/1619687073-24686-2-git-send-email-wangqing@vivo.com Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Stephen Kitt <steve@sk2.org> Cc: Kees Cook <keescook@chromium.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: "Guilherme G. Piccoli" <gpiccoli@canonical.com> Cc: Qais Yousef <qais.yousef@arm.com> Cc: Santosh Sivaraj <santosh@fossix.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/watchdog.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) --- a/kernel/watchdog.c~kernel-watchdog-modify-the-explanation-related-to-watchdog-thread +++ a/kernel/watchdog.c @@ -92,7 +92,7 @@ __setup("nmi_watchdog=", hardlockup_pani * own hardlockup detector. * * watchdog_nmi_enable/disable can be implemented to start and stop when - * softlockup watchdog threads start and stop. The arch must select the + * softlockup watchdog start and stop. The arch must select the * SOFTLOCKUP_DETECTOR Kconfig. */ int __weak watchdog_nmi_enable(unsigned int cpu) @@ -335,7 +335,7 @@ static DEFINE_PER_CPU(struct completion, static DEFINE_PER_CPU(struct cpu_stop_work, softlockup_stop_work); /* - * The watchdog thread function - touches the timestamp. + * The watchdog feed function - touches the timestamp. * * It only runs once every sample_period seconds (4 seconds by * default) to reset the softlockup timestamp. If this gets delayed @@ -558,11 +558,7 @@ static void lockup_detector_reconfigure( } /* - * Create the watchdog thread infrastructure and configure the detector(s). - * - * The threads are not unparked as watchdog_allowed_mask is empty. When - * the threads are successfully initialized, take the proper locks and - * unpark the threads in the watchdog_cpumask if the watchdog is enabled. + * Create the watchdog infrastructure and configure the detector(s). */ static __init void lockup_detector_setup(void) { @@ -628,7 +624,7 @@ void lockup_detector_soft_poweroff(void) #ifdef CONFIG_SYSCTL -/* Propagate any changes to the watchdog threads */ +/* Propagate any changes to the watchdog infrastructure */ static void proc_watchdog_update(void) { /* Remove impossible cpus to keep sysctl output clean. */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 020/192] doc: watchdog: modify the explanation related to watchdog thread 2021-06-29 2:32 incoming Andrew Morton ` (18 preceding siblings ...) 2021-06-29 2:34 ` [patch 019/192] kernel: watchdog: modify the explanation related to watchdog thread Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 021/192] doc: watchdog: modify the doc related to "watchdog/%u" Andrew Morton ` (171 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, corbet, gpiccoli, joe, keescook, linux-mm, mchehab+huawei, mm-commits, pmladek, qais.yousef, rdunlap, santosh, steve, torvalds, vbabka, wangqing From: Wang Qing <wangqing@vivo.com> Subject: doc: watchdog: modify the explanation related to watchdog thread "watchdog/%u" threads has be replaced by cpu_stop_work. The current description is extremely misleading. Link: https://lkml.kernel.org/r/1619687073-24686-4-git-send-email-wangqing@vivo.com Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: "Guilherme G. Piccoli" <gpiccoli@canonical.com> Cc: Joe Perches <joe@perches.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Qais Yousef <qais.yousef@arm.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Santosh Sivaraj <santosh@fossix.org> Cc: Stephen Kitt <steve@sk2.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/lockup-watchdogs.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/Documentation/admin-guide/lockup-watchdogs.rst~doc-watchdog-modify-the-explanation-related-to-watchdog-thread +++ a/Documentation/admin-guide/lockup-watchdogs.rst @@ -39,7 +39,7 @@ in principle, they should work in any ar subsystems are present. A periodic hrtimer runs to generate interrupts and kick the watchdog -task. An NMI perf event is generated every "watchdog_thresh" +job. An NMI perf event is generated every "watchdog_thresh" (compile-time initialized to 10 and configurable through sysctl of the same name) seconds to check for hardlockups. If any CPU in the system does not receive any hrtimer interrupt during that time the @@ -47,7 +47,7 @@ does not receive any hrtimer interrupt d generate a kernel warning or call panic, depending on the configuration. -The watchdog task is a high priority kernel thread that updates a +The watchdog job runs in a stop scheduling thread that updates a timestamp every time it is scheduled. If that timestamp is not updated for 2*watchdog_thresh seconds (the softlockup threshold) the 'softlockup detector' (coded inside the hrtimer callback function) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 021/192] doc: watchdog: modify the doc related to "watchdog/%u" 2021-06-29 2:32 incoming Andrew Morton ` (19 preceding siblings ...) 2021-06-29 2:34 ` [patch 020/192] doc: " Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 022/192] slab: use __func__ to trace function name Andrew Morton ` (170 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, corbet, gpiccoli, joe, keescook, linux-mm, mchehab+huawei, mm-commits, pmladek, qais.yousef, rdunlap, santosh, steve, torvalds, vbabka, wangqing From: Wang Qing <wangqing@vivo.com> Subject: doc: watchdog: modify the doc related to "watchdog/%u" "watchdog/%u" threads has be replaced by cpu_stop_work. The current description is extremely misleading. Link: https://lkml.kernel.org/r/1619687073-24686-5-git-send-email-wangqing@vivo.com Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: "Guilherme G. Piccoli" <gpiccoli@canonical.com> Cc: Joe Perches <joe@perches.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Cc: Qais Yousef <qais.yousef@arm.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Santosh Sivaraj <santosh@fossix.org> Cc: Stephen Kitt <steve@sk2.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/sysctl/kernel.rst | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/Documentation/admin-guide/sysctl/kernel.rst~doc-watchdog-modify-the-doc-related-to-watchdog-%u +++ a/Documentation/admin-guide/sysctl/kernel.rst @@ -1283,11 +1283,11 @@ This parameter can be used to control th = ================================= The soft lockup detector monitors CPUs for threads that are hogging the CPUs -without rescheduling voluntarily, and thus prevent the 'watchdog/N' threads -from running. The mechanism depends on the CPUs ability to respond to timer -interrupts which are needed for the 'watchdog/N' threads to be woken up by -the watchdog timer function, otherwise the NMI watchdog — if enabled — can -detect a hard lockup condition. +without rescheduling voluntarily, and thus prevent the 'migration/N' threads +from running, causing the watchdog work fail to execute. The mechanism depends +on the CPUs ability to respond to timer interrupts which are needed for the +watchdog work to be queued by the watchdog timer function, otherwise the NMI +watchdog — if enabled — can detect a hard lockup condition. stack_erasing _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 022/192] slab: use __func__ to trace function name 2021-06-29 2:32 incoming Andrew Morton ` (20 preceding siblings ...) 2021-06-29 2:34 ` [patch 021/192] doc: watchdog: modify the doc related to "watchdog/%u" Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 023/192] kunit: make test->lock irq safe Andrew Morton ` (169 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, atomlin, cl, gumingtao1225, gumingtao, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: gumingtao <gumingtao1225@gmail.com> Subject: slab: use __func__ to trace function name It is better to use __func__ to trace function name. Link: https://lkml.kernel.org/r/31fdbad5c45cd1e26be9ff37be321b8586b80fee.1624355507.git.gumingtao@xiaomi.com Signed-off-by: gumingtao <gumingtao@xiaomi.com> Acked-by: Christoph Lameter <cl@linux.com> Acked-by: David Rientjes <rientjes@google.com> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slab_common.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/mm/slab_common.c~slab-use-__func__-to-trace-function-name +++ a/mm/slab_common.c @@ -377,11 +377,11 @@ out_unlock: if (err) { if (flags & SLAB_PANIC) - panic("kmem_cache_create: Failed to create slab '%s'. Error %d\n", - name, err); + panic("%s: Failed to create slab '%s'. Error %d\n", + __func__, name, err); else { - pr_warn("kmem_cache_create(%s) failed with error %d\n", - name, err); + pr_warn("%s(%s) failed with error %d\n", + __func__, name, err); dump_stack(); } return NULL; @@ -508,8 +508,8 @@ void kmem_cache_destroy(struct kmem_cach err = shutdown_cache(s); if (err) { - pr_err("kmem_cache_destroy %s: Slab cache still has objects\n", - s->name); + pr_err("%s %s: Slab cache still has objects\n", + __func__, s->name); dump_stack(); } out_unlock: _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 023/192] kunit: make test->lock irq safe 2021-06-29 2:32 incoming Andrew Morton ` (21 preceding siblings ...) 2021-06-29 2:34 ` [patch 022/192] slab: use __func__ to trace function name Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 024/192] mm/slub, kunit: add a KUnit test for SLUB debugging functionality Andrew Morton ` (168 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, brendanhiggins, cl, dlatypov, elver, glittao, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: Vlastimil Babka <vbabka@suse.cz> Subject: kunit: make test->lock irq safe The upcoming SLUB kunit test will be calling kunit_find_named_resource() from a context with disabled interrupts. That means kunit's test->lock needs to be IRQ safe to avoid potential deadlocks and lockdep splats. This patch therefore changes the test->lock usage to spin_lock_irqsave() and spin_unlock_irqrestore(). Link: https://lkml.kernel.org/r/20210511150734.3492-1-glittao@gmail.com Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Oliver Glitta <glittao@gmail.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Daniel Latypov <dlatypov@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Marco Elver <elver@google.com> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/kunit/test.h | 5 +++-- lib/kunit/test.c | 18 +++++++++++------- 2 files changed, 14 insertions(+), 9 deletions(-) --- a/include/kunit/test.h~kunit-make-test-lock-irq-safe +++ a/include/kunit/test.h @@ -515,8 +515,9 @@ kunit_find_resource(struct kunit *test, void *match_data) { struct kunit_resource *res, *found = NULL; + unsigned long flags; - spin_lock(&test->lock); + spin_lock_irqsave(&test->lock, flags); list_for_each_entry_reverse(res, &test->resources, node) { if (match(test, res, (void *)match_data)) { @@ -526,7 +527,7 @@ kunit_find_resource(struct kunit *test, } } - spin_unlock(&test->lock); + spin_unlock_irqrestore(&test->lock, flags); return found; } --- a/lib/kunit/test.c~kunit-make-test-lock-irq-safe +++ a/lib/kunit/test.c @@ -475,6 +475,7 @@ int kunit_add_resource(struct kunit *tes void *data) { int ret = 0; + unsigned long flags; res->free = free; kref_init(&res->refcount); @@ -487,10 +488,10 @@ int kunit_add_resource(struct kunit *tes res->data = data; } - spin_lock(&test->lock); + spin_lock_irqsave(&test->lock, flags); list_add_tail(&res->node, &test->resources); /* refcount for list is established by kref_init() */ - spin_unlock(&test->lock); + spin_unlock_irqrestore(&test->lock, flags); return ret; } @@ -548,9 +549,11 @@ EXPORT_SYMBOL_GPL(kunit_alloc_and_get_re void kunit_remove_resource(struct kunit *test, struct kunit_resource *res) { - spin_lock(&test->lock); + unsigned long flags; + + spin_lock_irqsave(&test->lock, flags); list_del(&res->node); - spin_unlock(&test->lock); + spin_unlock_irqrestore(&test->lock, flags); kunit_put_resource(res); } EXPORT_SYMBOL_GPL(kunit_remove_resource); @@ -630,6 +633,7 @@ EXPORT_SYMBOL_GPL(kunit_kfree); void kunit_cleanup(struct kunit *test) { struct kunit_resource *res; + unsigned long flags; /* * test->resources is a stack - each allocation must be freed in the @@ -641,9 +645,9 @@ void kunit_cleanup(struct kunit *test) * protect against the current node being deleted, not the next. */ while (true) { - spin_lock(&test->lock); + spin_lock_irqsave(&test->lock, flags); if (list_empty(&test->resources)) { - spin_unlock(&test->lock); + spin_unlock_irqrestore(&test->lock, flags); break; } res = list_last_entry(&test->resources, @@ -654,7 +658,7 @@ void kunit_cleanup(struct kunit *test) * resource, and this can't happen if the test->lock * is held. */ - spin_unlock(&test->lock); + spin_unlock_irqrestore(&test->lock, flags); kunit_remove_resource(test, res); } current->kunit_test = NULL; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 024/192] mm/slub, kunit: add a KUnit test for SLUB debugging functionality 2021-06-29 2:32 incoming Andrew Morton ` (22 preceding siblings ...) 2021-06-29 2:34 ` [patch 023/192] kunit: make test->lock irq safe Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 025/192] slub: remove resiliency_test() function Andrew Morton ` (167 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, brendanhiggins, cl, dlatypov, elver, glittao, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: Oliver Glitta <glittao@gmail.com> Subject: mm/slub, kunit: add a KUnit test for SLUB debugging functionality SLUB has resiliency_test() function which is hidden behind #ifdef SLUB_RESILIENCY_TEST that is not part of Kconfig, so nobody runs it. KUnit should be a proper replacement for it. Try changing byte in redzone after allocation and changing pointer to next free node, first byte, 50th byte and redzone byte. Check if validation finds errors. There are several differences from the original resiliency test: Tests create own caches with known state instead of corrupting shared kmalloc caches. The corruption of freepointer uses correct offset, the original resiliency test got broken with freepointer changes. Scratch changing random byte test, because it does not have meaning in this form where we need deterministic results. Add new option CONFIG_SLUB_KUNIT_TEST in Kconfig. Tests next_pointer, first_word and clobber_50th_byte do not run with KASAN option on. Because the test deliberately modifies non-allocated objects. Use kunit_resource to count errors in cache and silence bug reports. Count error whenever slab_bug() or slab_fix() is called or when the count of pages is wrong. [glittao@gmail.com: remove unused function test_exit(), from SLUB KUnit test] Link: https://lkml.kernel.org/r/20210512140656.12083-1-glittao@gmail.com [akpm@linux-foundation.org: export kasan_enable/disable_current to modules] Link: https://lkml.kernel.org/r/20210511150734.3492-2-glittao@gmail.com Signed-off-by: Oliver Glitta <glittao@gmail.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Daniel Latypov <dlatypov@google.com> Acked-by: Marco Elver <elver@google.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- lib/Kconfig.debug | 12 +++ lib/Makefile | 1 lib/slub_kunit.c | 152 ++++++++++++++++++++++++++++++++++++++++++++ mm/kasan/common.c | 3 mm/slab.h | 1 mm/slub.c | 46 ++++++++++++- 6 files changed, 212 insertions(+), 3 deletions(-) --- a/lib/Kconfig.debug~mm-slub-kunit-add-a-kunit-test-for-slub-debugging-functionality +++ a/lib/Kconfig.debug @@ -2429,6 +2429,18 @@ config BITS_TEST If unsure, say N. +config SLUB_KUNIT_TEST + tristate "KUnit test for SLUB cache error detection" if !KUNIT_ALL_TESTS + depends on SLUB_DEBUG && KUNIT + default KUNIT_ALL_TESTS + help + This builds SLUB allocator unit test. + Tests SLUB cache debugging functionality. + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + config TEST_UDELAY tristate "udelay test driver" help --- a/lib/Makefile~mm-slub-kunit-add-a-kunit-test-for-slub-debugging-functionality +++ a/lib/Makefile @@ -354,5 +354,6 @@ obj-$(CONFIG_LIST_KUNIT_TEST) += list-te obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o obj-$(CONFIG_BITS_TEST) += test_bits.o obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o +obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o --- /dev/null +++ a/lib/slub_kunit.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <kunit/test.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include "../mm/slab.h" + +static struct kunit_resource resource; +static int slab_errors; + +static void test_clobber_zone(struct kunit *test) +{ + struct kmem_cache *s = kmem_cache_create("TestSlub_RZ_alloc", 64, 0, + SLAB_RED_ZONE, NULL); + u8 *p = kmem_cache_alloc(s, GFP_KERNEL); + + kasan_disable_current(); + p[64] = 0x12; + + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 2, slab_errors); + + kasan_enable_current(); + kmem_cache_free(s, p); + kmem_cache_destroy(s); +} + +#ifndef CONFIG_KASAN +static void test_next_pointer(struct kunit *test) +{ + struct kmem_cache *s = kmem_cache_create("TestSlub_next_ptr_free", 64, 0, + SLAB_POISON, NULL); + u8 *p = kmem_cache_alloc(s, GFP_KERNEL); + unsigned long tmp; + unsigned long *ptr_addr; + + kmem_cache_free(s, p); + + ptr_addr = (unsigned long *)(p + s->offset); + tmp = *ptr_addr; + p[s->offset] = 0x12; + + /* + * Expecting three errors. + * One for the corrupted freechain and the other one for the wrong + * count of objects in use. The third error is fixing broken cache. + */ + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 3, slab_errors); + + /* + * Try to repair corrupted freepointer. + * Still expecting two errors. The first for the wrong count + * of objects in use. + * The second error is for fixing broken cache. + */ + *ptr_addr = tmp; + slab_errors = 0; + + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 2, slab_errors); + + /* + * Previous validation repaired the count of objects in use. + * Now expecting no error. + */ + slab_errors = 0; + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 0, slab_errors); + + kmem_cache_destroy(s); +} + +static void test_first_word(struct kunit *test) +{ + struct kmem_cache *s = kmem_cache_create("TestSlub_1th_word_free", 64, 0, + SLAB_POISON, NULL); + u8 *p = kmem_cache_alloc(s, GFP_KERNEL); + + kmem_cache_free(s, p); + *p = 0x78; + + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 2, slab_errors); + + kmem_cache_destroy(s); +} + +static void test_clobber_50th_byte(struct kunit *test) +{ + struct kmem_cache *s = kmem_cache_create("TestSlub_50th_word_free", 64, 0, + SLAB_POISON, NULL); + u8 *p = kmem_cache_alloc(s, GFP_KERNEL); + + kmem_cache_free(s, p); + p[50] = 0x9a; + + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 2, slab_errors); + + kmem_cache_destroy(s); +} +#endif + +static void test_clobber_redzone_free(struct kunit *test) +{ + struct kmem_cache *s = kmem_cache_create("TestSlub_RZ_free", 64, 0, + SLAB_RED_ZONE, NULL); + u8 *p = kmem_cache_alloc(s, GFP_KERNEL); + + kasan_disable_current(); + kmem_cache_free(s, p); + p[64] = 0xab; + + validate_slab_cache(s); + KUNIT_EXPECT_EQ(test, 2, slab_errors); + + kasan_enable_current(); + kmem_cache_destroy(s); +} + +static int test_init(struct kunit *test) +{ + slab_errors = 0; + + kunit_add_named_resource(test, NULL, NULL, &resource, + "slab_errors", &slab_errors); + return 0; +} + +static struct kunit_case test_cases[] = { + KUNIT_CASE(test_clobber_zone), + +#ifndef CONFIG_KASAN + KUNIT_CASE(test_next_pointer), + KUNIT_CASE(test_first_word), + KUNIT_CASE(test_clobber_50th_byte), +#endif + + KUNIT_CASE(test_clobber_redzone_free), + {} +}; + +static struct kunit_suite test_suite = { + .name = "slub_test", + .init = test_init, + .test_cases = test_cases, +}; +kunit_test_suite(test_suite); + +MODULE_LICENSE("GPL"); --- a/mm/kasan/common.c~mm-slub-kunit-add-a-kunit-test-for-slub-debugging-functionality +++ a/mm/kasan/common.c @@ -51,11 +51,14 @@ void kasan_enable_current(void) { current->kasan_depth++; } +EXPORT_SYMBOL(kasan_enable_current); void kasan_disable_current(void) { current->kasan_depth--; } +EXPORT_SYMBOL(kasan_disable_current); + #endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */ void __kasan_unpoison_range(const void *address, size_t size) --- a/mm/slab.h~mm-slub-kunit-add-a-kunit-test-for-slub-debugging-functionality +++ a/mm/slab.h @@ -215,6 +215,7 @@ DECLARE_STATIC_KEY_TRUE(slub_debug_enabl DECLARE_STATIC_KEY_FALSE(slub_debug_enabled); #endif extern void print_tracking(struct kmem_cache *s, void *object); +long validate_slab_cache(struct kmem_cache *s); #else static inline void print_tracking(struct kmem_cache *s, void *object) { --- a/mm/slub.c~mm-slub-kunit-add-a-kunit-test-for-slub-debugging-functionality +++ a/mm/slub.c @@ -36,6 +36,7 @@ #include <linux/prefetch.h> #include <linux/memcontrol.h> #include <linux/random.h> +#include <kunit/test.h> #include <trace/events/kmem.h> @@ -449,6 +450,26 @@ static inline bool cmpxchg_double_slab(s static unsigned long object_map[BITS_TO_LONGS(MAX_OBJS_PER_PAGE)]; static DEFINE_SPINLOCK(object_map_lock); +#if IS_ENABLED(CONFIG_KUNIT) +static bool slab_add_kunit_errors(void) +{ + struct kunit_resource *resource; + + if (likely(!current->kunit_test)) + return false; + + resource = kunit_find_named_resource(current->kunit_test, "slab_errors"); + if (!resource) + return false; + + (*(int *)resource->data)++; + kunit_put_resource(resource); + return true; +} +#else +static inline bool slab_add_kunit_errors(void) { return false; } +#endif + /* * Determine a map of object in use on a page. * @@ -679,6 +700,9 @@ static void slab_fix(struct kmem_cache * struct va_format vaf; va_list args; + if (slab_add_kunit_errors()) + return; + va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; @@ -742,6 +766,9 @@ static void print_trailer(struct kmem_ca void object_err(struct kmem_cache *s, struct page *page, u8 *object, char *reason) { + if (slab_add_kunit_errors()) + return; + slab_bug(s, "%s", reason); print_trailer(s, page, object); } @@ -752,6 +779,9 @@ static __printf(3, 4) void slab_err(stru va_list args; char buf[100]; + if (slab_add_kunit_errors()) + return; + va_start(args, fmt); vsnprintf(buf, sizeof(buf), fmt, args); va_end(args); @@ -801,12 +831,16 @@ static int check_bytes_and_report(struct while (end > fault && end[-1] == value) end--; + if (slab_add_kunit_errors()) + goto skip_bug_print; + slab_bug(s, "%s overwritten", what); pr_err("0x%p-0x%p @offset=%tu. First byte 0x%x instead of 0x%x\n", fault, end - 1, fault - addr, fault[0], value); print_trailer(s, page, object); +skip_bug_print: restore_bytes(s, what, value, fault, end); return 0; } @@ -4649,9 +4683,11 @@ static int validate_slab_node(struct kme validate_slab(s, page); count++; } - if (count != n->nr_partial) + if (count != n->nr_partial) { pr_err("SLUB %s: %ld partial slabs counted but counter=%ld\n", s->name, count, n->nr_partial); + slab_add_kunit_errors(); + } if (!(s->flags & SLAB_STORE_USER)) goto out; @@ -4660,16 +4696,18 @@ static int validate_slab_node(struct kme validate_slab(s, page); count++; } - if (count != atomic_long_read(&n->nr_slabs)) + if (count != atomic_long_read(&n->nr_slabs)) { pr_err("SLUB: %s %ld slabs counted but counter=%ld\n", s->name, count, atomic_long_read(&n->nr_slabs)); + slab_add_kunit_errors(); + } out: spin_unlock_irqrestore(&n->list_lock, flags); return count; } -static long validate_slab_cache(struct kmem_cache *s) +long validate_slab_cache(struct kmem_cache *s) { int node; unsigned long count = 0; @@ -4681,6 +4719,8 @@ static long validate_slab_cache(struct k return count; } +EXPORT_SYMBOL(validate_slab_cache); + /* * Generate lists of code addresses where slabcache objects are allocated * and freed. _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 025/192] slub: remove resiliency_test() function 2021-06-29 2:32 incoming Andrew Morton ` (23 preceding siblings ...) 2021-06-29 2:34 ` [patch 024/192] mm/slub, kunit: add a KUnit test for SLUB debugging functionality Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 026/192] mm, slub: change run-time assertion in kmalloc_index() to compile-time Andrew Morton ` (166 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, brendanhiggins, cl, dlatypov, elver, glittao, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: Oliver Glitta <glittao@gmail.com> Subject: slub: remove resiliency_test() function Function resiliency_test() is hidden behind #ifdef SLUB_RESILIENCY_TEST that is not part of Kconfig, so nobody runs it. This function is replaced with KUnit test for SLUB added by the previous patch "selftests: add a KUnit test for SLUB debugging functionality". Link: https://lkml.kernel.org/r/20210511150734.3492-3-glittao@gmail.com Signed-off-by: Oliver Glitta <glittao@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Rientjes <rientjes@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Oliver Glitta <glittao@gmail.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Daniel Latypov <dlatypov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 64 ---------------------------------------------------- 1 file changed, 64 deletions(-) --- a/mm/slub.c~slub-remove-resiliency_test-function +++ a/mm/slub.c @@ -155,9 +155,6 @@ static inline bool kmem_cache_has_cpu_pa * - Variable sizing of the per node arrays */ -/* Enable to test recovery from slab corruption on boot */ -#undef SLUB_RESILIENCY_TEST - /* Enable to log cmpxchg failures */ #undef SLUB_DEBUG_CMPXCHG @@ -4938,66 +4935,6 @@ static int list_locations(struct kmem_ca } #endif /* CONFIG_SLUB_DEBUG */ -#ifdef SLUB_RESILIENCY_TEST -static void __init resiliency_test(void) -{ - u8 *p; - int type = KMALLOC_NORMAL; - - BUILD_BUG_ON(KMALLOC_MIN_SIZE > 16 || KMALLOC_SHIFT_HIGH < 10); - - pr_err("SLUB resiliency testing\n"); - pr_err("-----------------------\n"); - pr_err("A. Corruption after allocation\n"); - - p = kzalloc(16, GFP_KERNEL); - p[16] = 0x12; - pr_err("\n1. kmalloc-16: Clobber Redzone/next pointer 0x12->0x%p\n\n", - p + 16); - - validate_slab_cache(kmalloc_caches[type][4]); - - /* Hmmm... The next two are dangerous */ - p = kzalloc(32, GFP_KERNEL); - p[32 + sizeof(void *)] = 0x34; - pr_err("\n2. kmalloc-32: Clobber next pointer/next slab 0x34 -> -0x%p\n", - p); - pr_err("If allocated object is overwritten then not detectable\n\n"); - - validate_slab_cache(kmalloc_caches[type][5]); - p = kzalloc(64, GFP_KERNEL); - p += 64 + (get_cycles() & 0xff) * sizeof(void *); - *p = 0x56; - pr_err("\n3. kmalloc-64: corrupting random byte 0x56->0x%p\n", - p); - pr_err("If allocated object is overwritten then not detectable\n\n"); - validate_slab_cache(kmalloc_caches[type][6]); - - pr_err("\nB. Corruption after free\n"); - p = kzalloc(128, GFP_KERNEL); - kfree(p); - *p = 0x78; - pr_err("1. kmalloc-128: Clobber first word 0x78->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches[type][7]); - - p = kzalloc(256, GFP_KERNEL); - kfree(p); - p[50] = 0x9a; - pr_err("\n2. kmalloc-256: Clobber 50th byte 0x9a->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches[type][8]); - - p = kzalloc(512, GFP_KERNEL); - kfree(p); - p[512] = 0xab; - pr_err("\n3. kmalloc-512: Clobber redzone 0xab->0x%p\n\n", p); - validate_slab_cache(kmalloc_caches[type][9]); -} -#else -#ifdef CONFIG_SYSFS -static void resiliency_test(void) {}; -#endif -#endif /* SLUB_RESILIENCY_TEST */ - #ifdef CONFIG_SYSFS enum slab_stat_type { SL_ALL, /* All slabs */ @@ -5846,7 +5783,6 @@ static int __init slab_sysfs_init(void) } mutex_unlock(&slab_mutex); - resiliency_test(); return 0; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 026/192] mm, slub: change run-time assertion in kmalloc_index() to compile-time 2021-06-29 2:32 incoming Andrew Morton ` (24 preceding siblings ...) 2021-06-29 2:34 ` [patch 025/192] slub: remove resiliency_test() function Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 027/192] slub: restore slub_debug=- behavior Andrew Morton ` (165 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: 42.hyeyoo, akpm, cl, elver, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: Hyeonggon Yoo <42.hyeyoo@gmail.com> Subject: mm, slub: change run-time assertion in kmalloc_index() to compile-time Currently when size is not supported by kmalloc_index, compiler will generate a run-time BUG() while compile-time error is also possible, and better. So change BUG to BUILD_BUG_ON_MSG to make compile-time check possible. Also remove code that allocates more than 32MB because current implementation supports only up to 32MB. [42.hyeyoo@gmail.com: fix support for clang 10] Link: https://lkml.kernel.org/r/20210518181247.GA10062@hyeyoo [vbabka@suse.cz: fix false-positive assert in kernel/bpf/local_storage.c] Link: https://lkml.kernel.org/r/bea97388-01df-8eac-091b-a3c89b4a4a09@suse.czLink: https://lkml.kernel.org/r/20210511173448.GA54466@hyeyoo [elver@google.com: kfence fix] Link: https://lkml.kernel.org/r/20210512195227.245000695c9014242e9a00e5@linux-foundation.org Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Marco Elver <elver@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/slab.h | 17 ++++++++++++++--- mm/kfence/kfence_test.c | 5 +++-- mm/slab_common.c | 7 +++---- 3 files changed, 20 insertions(+), 9 deletions(-) --- a/include/linux/slab.h~mm-slub-change-run-time-assertion-in-kmalloc_index-to-compile-time +++ a/include/linux/slab.h @@ -346,8 +346,14 @@ static __always_inline enum kmalloc_cach * 1 = 65 .. 96 bytes * 2 = 129 .. 192 bytes * n = 2^(n-1)+1 .. 2^n + * + * Note: __kmalloc_index() is compile-time optimized, and not runtime optimized; + * typical usage is via kmalloc_index() and therefore evaluated at compile-time. + * Callers where !size_is_constant should only be test modules, where runtime + * overheads of __kmalloc_index() can be tolerated. Also see kmalloc_slab(). */ -static __always_inline unsigned int kmalloc_index(size_t size) +static __always_inline unsigned int __kmalloc_index(size_t size, + bool size_is_constant) { if (!size) return 0; @@ -382,12 +388,17 @@ static __always_inline unsigned int kmal if (size <= 8 * 1024 * 1024) return 23; if (size <= 16 * 1024 * 1024) return 24; if (size <= 32 * 1024 * 1024) return 25; - if (size <= 64 * 1024 * 1024) return 26; - BUG(); + + if ((IS_ENABLED(CONFIG_CC_IS_GCC) || CONFIG_CLANG_VERSION >= 110000) + && !IS_ENABLED(CONFIG_PROFILE_ALL_BRANCHES) && size_is_constant) + BUILD_BUG_ON_MSG(1, "unexpected size in kmalloc_index()"); + else + BUG(); /* Will never be reached. Needed because the compiler may complain */ return -1; } +#define kmalloc_index(s) __kmalloc_index(s, true) #endif /* !CONFIG_SLOB */ void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __malloc; --- a/mm/kfence/kfence_test.c~mm-slub-change-run-time-assertion-in-kmalloc_index-to-compile-time +++ a/mm/kfence/kfence_test.c @@ -197,7 +197,7 @@ static void test_cache_destroy(void) static inline size_t kmalloc_cache_alignment(size_t size) { - return kmalloc_caches[kmalloc_type(GFP_KERNEL)][kmalloc_index(size)]->align; + return kmalloc_caches[kmalloc_type(GFP_KERNEL)][__kmalloc_index(size, false)]->align; } /* Must always inline to match stack trace against caller. */ @@ -267,7 +267,8 @@ static void *test_alloc(struct kunit *te if (is_kfence_address(alloc)) { struct page *page = virt_to_head_page(alloc); - struct kmem_cache *s = test_cache ?: kmalloc_caches[kmalloc_type(GFP_KERNEL)][kmalloc_index(size)]; + struct kmem_cache *s = test_cache ?: + kmalloc_caches[kmalloc_type(GFP_KERNEL)][__kmalloc_index(size, false)]; /* * Verify that various helpers return the right values --- a/mm/slab_common.c~mm-slub-change-run-time-assertion-in-kmalloc_index-to-compile-time +++ a/mm/slab_common.c @@ -754,8 +754,8 @@ struct kmem_cache *kmalloc_slab(size_t s /* * kmalloc_info[] is to make slub_debug=,kmalloc-xx option work at boot time. - * kmalloc_index() supports up to 2^26=64MB, so the final entry of the table is - * kmalloc-67108864. + * kmalloc_index() supports up to 2^25=32MB, so the final entry of the table is + * kmalloc-32M. */ const struct kmalloc_info_struct kmalloc_info[] __initconst = { INIT_KMALLOC_INFO(0, 0), @@ -783,8 +783,7 @@ const struct kmalloc_info_struct kmalloc INIT_KMALLOC_INFO(4194304, 4M), INIT_KMALLOC_INFO(8388608, 8M), INIT_KMALLOC_INFO(16777216, 16M), - INIT_KMALLOC_INFO(33554432, 32M), - INIT_KMALLOC_INFO(67108864, 64M) + INIT_KMALLOC_INFO(33554432, 32M) }; /* _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 027/192] slub: restore slub_debug=- behavior 2021-06-29 2:32 incoming Andrew Morton ` (25 preceding siblings ...) 2021-06-29 2:34 ` [patch 026/192] mm, slub: change run-time assertion in kmalloc_index() to compile-time Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 028/192] slub: actually use 'message' in restore_bytes() Andrew Morton ` (164 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, cl, iamjoonsoo.kim, joe, linux-mm, mm-commits, penberg, pmladek, rientjes, songmuchun, swboyd, torvalds, vbabka From: Stephen Boyd <swboyd@chromium.org> Subject: slub: restore slub_debug=- behavior Petch series "slub: Print non-hashed pointers in slub debugging", v3. I was doing some debugging recently and noticed that my pointers were being hashed while slub_debug was on the kernel commandline. Let's force on the no hash pointer option when slub_debug is on the kernel commandline so that the prints are more meaningful. The first two patches are something else I noticed while looking at the code. The message argument is never used so the debugging messages are not as clear as they could be and the slub_debug=- behavior seems to be busted. Then there's a printf fixup from Joe and the final patch is the one that force disables pointer hashing. This patch (of 4): Passing slub_debug=- on the kernel commandline is supposed to disable slub debugging. This is especially useful with CONFIG_SLUB_DEBUG_ON where the default is to have slub debugging enabled in the build. Due to some code reorganization this behavior was dropped, but the code to make it work mostly stuck around. Restore the previous behavior by disabling the static key when we parse the commandline and see that we're trying to disable slub debugging. Link: https://lkml.kernel.org/r/20210601182202.3011020-1-swboyd@chromium.org Link: https://lkml.kernel.org/r/20210601182202.3011020-2-swboyd@chromium.org Fixes: ca0cab65ea2b ("mm, slub: introduce static key for slub_debug()") Signed-off-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Joe Perches <joe@perches.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/slub.c~slub-restore-slub_debug=-behavior +++ a/mm/slub.c @@ -1429,6 +1429,8 @@ static int __init setup_slub_debug(char out: if (slub_debug != 0 || slub_debug_string) static_branch_enable(&slub_debug_enabled); + else + static_branch_disable(&slub_debug_enabled); if ((static_branch_unlikely(&init_on_alloc) || static_branch_unlikely(&init_on_free)) && (slub_debug & SLAB_POISON)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 028/192] slub: actually use 'message' in restore_bytes() 2021-06-29 2:32 incoming Andrew Morton ` (26 preceding siblings ...) 2021-06-29 2:34 ` [patch 027/192] slub: restore slub_debug=- behavior Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 029/192] slub: indicate slab_fix() uses printf formats Andrew Morton ` (163 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, cl, iamjoonsoo.kim, joe, linux-mm, mm-commits, penberg, pmladek, rientjes, songmuchun, swboyd, torvalds, vbabka From: Stephen Boyd <swboyd@chromium.org> Subject: slub: actually use 'message' in restore_bytes() The message argument isn't used here. Let's pass the string to the printk message so that the developer can figure out what's happening, instead of guessing that a redzone is being restored, etc. Link: https://lkml.kernel.org/r/20210601182202.3011020-3-swboyd@chromium.org Signed-off-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Rientjes <rientjes@google.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joe Perches <joe@perches.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/slub.c~slub-actually-use-message-in-restore_bytes +++ a/mm/slub.c @@ -806,7 +806,7 @@ static void init_object(struct kmem_cach static void restore_bytes(struct kmem_cache *s, char *message, u8 data, void *from, void *to) { - slab_fix(s, "Restoring 0x%p-0x%p=0x%x\n", from, to - 1, data); + slab_fix(s, "Restoring %s 0x%p-0x%p=0x%x\n", message, from, to - 1, data); memset(from, data, to - from); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 029/192] slub: indicate slab_fix() uses printf formats 2021-06-29 2:32 incoming Andrew Morton ` (27 preceding siblings ...) 2021-06-29 2:34 ` [patch 028/192] slub: actually use 'message' in restore_bytes() Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 030/192] slub: force on no_hash_pointers when slub_debug is enabled Andrew Morton ` (162 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, cl, iamjoonsoo.kim, joe, linux-mm, mm-commits, penberg, pmladek, rientjes, songmuchun, swboyd, torvalds, vbabka From: Joe Perches <joe@perches.com> Subject: slub: indicate slab_fix() uses printf formats Ideally, slab_fix() would be marked with __printf and the format here would not use \n as that's emitted by the slab_fix(). Make these changes. Link: https://lkml.kernel.org/r/20210601182202.3011020-4-swboyd@chromium.org Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Acked-by: David Rientjes <rientjes@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/mm/slub.c~slub-indicate-slab_fix-uses-printf-formats +++ a/mm/slub.c @@ -692,6 +692,7 @@ static void slab_bug(struct kmem_cache * va_end(args); } +__printf(2, 3) static void slab_fix(struct kmem_cache *s, char *fmt, ...) { struct va_format vaf; @@ -806,7 +807,7 @@ static void init_object(struct kmem_cach static void restore_bytes(struct kmem_cache *s, char *message, u8 data, void *from, void *to) { - slab_fix(s, "Restoring %s 0x%p-0x%p=0x%x\n", message, from, to - 1, data); + slab_fix(s, "Restoring %s 0x%p-0x%p=0x%x", message, from, to - 1, data); memset(from, data, to - from); } @@ -1059,13 +1060,13 @@ static int on_freelist(struct kmem_cache slab_err(s, page, "Wrong number of objects. Found %d but should be %d", page->objects, max_objects); page->objects = max_objects; - slab_fix(s, "Number of objects adjusted."); + slab_fix(s, "Number of objects adjusted"); } if (page->inuse != page->objects - nr) { slab_err(s, page, "Wrong object count. Counter is %d but counted were %d", page->inuse, page->objects - nr); page->inuse = page->objects - nr; - slab_fix(s, "Object count adjusted."); + slab_fix(s, "Object count adjusted"); } return search == NULL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 030/192] slub: force on no_hash_pointers when slub_debug is enabled 2021-06-29 2:32 incoming Andrew Morton ` (28 preceding siblings ...) 2021-06-29 2:34 ` [patch 029/192] slub: indicate slab_fix() uses printf formats Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 031/192] mm: slub: move sysfs slab alloc/free interfaces to debugfs Andrew Morton ` (161 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, cl, iamjoonsoo.kim, joe, linux-mm, mm-commits, penberg, pmladek, rientjes, songmuchun, swboyd, torvalds, vbabka From: Stephen Boyd <swboyd@chromium.org> Subject: slub: force on no_hash_pointers when slub_debug is enabled Obscuring the pointers that slub shows when debugging makes for some confusing slub debug messages: Padding overwritten. 0x0000000079f0674a-0x000000000d4dce17 Those addresses are hashed for kernel security reasons. If we're trying to be secure with slub_debug on the commandline we have some big problems given that we dump whole chunks of kernel memory to the kernel logs. Let's force on the no_hash_pointers commandline flag when slub_debug is on the commandline. This makes slub debug messages more meaningful and if by chance a kernel address is in some slub debug object dump we will have a better chance of figuring out what went wrong. Note that we don't use %px in the slub code because we want to reduce the number of places that %px is used in the kernel. This also nicely prints a big fat warning at kernel boot if slub_debug is on the commandline so that we know that this kernel shouldn't be used on production systems. [akpm@linux-foundation.org: fix build with CONFIG_SLUB_DEBUG=n] Link: https://lkml.kernel.org/r/20210601182202.3011020-5-swboyd@chromium.org Signed-off-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Petr Mladek <pmladek@suse.com> Cc: Joe Perches <joe@perches.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/kernel.h | 2 ++ lib/vsprintf.c | 2 +- mm/slub.c | 20 +++++++++++++++++++- 3 files changed, 22 insertions(+), 2 deletions(-) --- a/include/linux/kernel.h~slub-force-on-no_hash_pointers-when-slub_debug-is-enabled +++ a/include/linux/kernel.h @@ -357,6 +357,8 @@ int sscanf(const char *, const char *, . extern __scanf(2, 0) int vsscanf(const char *, const char *, va_list); +extern int no_hash_pointers_enable(char *str); + extern int get_option(char **str, int *pint); extern char *get_options(const char *str, int nints, int *ints); extern unsigned long long memparse(const char *ptr, char **retptr); --- a/lib/vsprintf.c~slub-force-on-no_hash_pointers-when-slub_debug-is-enabled +++ a/lib/vsprintf.c @@ -2186,7 +2186,7 @@ char *fwnode_string(char *buf, char *end bool no_hash_pointers __ro_after_init; EXPORT_SYMBOL_GPL(no_hash_pointers); -static int __init no_hash_pointers_enable(char *str) +int __init no_hash_pointers_enable(char *str) { if (no_hash_pointers) return 0; --- a/mm/slub.c~slub-force-on-no_hash_pointers-when-slub_debug-is-enabled +++ a/mm/slub.c @@ -118,12 +118,26 @@ */ #ifdef CONFIG_SLUB_DEBUG + #ifdef CONFIG_SLUB_DEBUG_ON DEFINE_STATIC_KEY_TRUE(slub_debug_enabled); #else DEFINE_STATIC_KEY_FALSE(slub_debug_enabled); #endif -#endif + +static inline bool __slub_debug_enabled(void) +{ + return static_branch_unlikely(&slub_debug_enabled); +} + +#else /* CONFIG_SLUB_DEBUG */ + +static inline bool __slub_debug_enabled(void) +{ + return false; +} + +#endif /* CONFIG_SLUB_DEBUG */ static inline bool kmem_cache_debug(struct kmem_cache *s) { @@ -4487,6 +4501,10 @@ void __init kmem_cache_init(void) if (debug_guardpage_minorder()) slub_max_order = 0; + /* Print slub debugging pointers without hashing */ + if (__slub_debug_enabled()) + no_hash_pointers_enable(NULL); + kmem_cache_node = &boot_kmem_cache_node; kmem_cache = &boot_kmem_cache; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 031/192] mm: slub: move sysfs slab alloc/free interfaces to debugfs 2021-06-29 2:32 incoming Andrew Morton ` (29 preceding siblings ...) 2021-06-29 2:34 ` [patch 030/192] slub: force on no_hash_pointers when slub_debug is enabled Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:34 ` [patch 032/192] mm/slub: add taint after the errors are printed Andrew Morton ` (160 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, cl, faiyazm, gregkh, iamjoonsoo.kim, linux-mm, mm-commits, penberg, rientjes, torvalds, vbabka From: Faiyaz Mohammed <faiyazm@codeaurora.org> Subject: mm: slub: move sysfs slab alloc/free interfaces to debugfs alloc_calls and free_calls implementation in sysfs have two issues, one is PAGE_SIZE limitation of sysfs and other is it does not adhere to "one value per file" rule. To overcome this issues, move the alloc_calls and free_calls implementation to debugfs. Debugfs cache will be created if SLAB_STORE_USER flag is set. Rename the alloc_calls/free_calls to alloc_traces/free_traces, to be inline with what it does. [faiyazm@codeaurora.org: fix the leak of alloc/free traces debugfs interface] Link: https://lkml.kernel.org/r/1624248060-30286-1-git-send-email-faiyazm@codeaurora.org Link: https://lkml.kernel.org/r/1623438200-19361-1-git-send-email-faiyazm@codeaurora.org Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slab.h | 6 mm/slab_common.c | 2 mm/slub.c | 274 +++++++++++++++++++++++++++++---------------- 3 files changed, 189 insertions(+), 93 deletions(-) --- a/mm/slab_common.c~mm-slub-move-sysfs-slab-alloc-free-interfaces-to-debugfs +++ a/mm/slab_common.c @@ -448,6 +448,7 @@ static void slab_caches_to_rcu_destroy_w rcu_barrier(); list_for_each_entry_safe(s, s2, &to_destroy, list) { + debugfs_slab_release(s); kfence_shutdown_cache(s); #ifdef SLAB_SUPPORTS_SYSFS sysfs_slab_release(s); @@ -475,6 +476,7 @@ static int shutdown_cache(struct kmem_ca schedule_work(&slab_caches_to_rcu_destroy_work); } else { kfence_shutdown_cache(s); + debugfs_slab_release(s); #ifdef SLAB_SUPPORTS_SYSFS sysfs_slab_unlink(s); sysfs_slab_release(s); --- a/mm/slab.h~mm-slub-move-sysfs-slab-alloc-free-interfaces-to-debugfs +++ a/mm/slab.h @@ -631,6 +631,12 @@ static inline bool slab_want_init_on_fre return false; } +#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_SLUB_DEBUG) +void debugfs_slab_release(struct kmem_cache *); +#else +static inline void debugfs_slab_release(struct kmem_cache *s) { } +#endif + #ifdef CONFIG_PRINTK #define KS_ADDRS_COUNT 16 struct kmem_obj_info { --- a/mm/slub.c~mm-slub-move-sysfs-slab-alloc-free-interfaces-to-debugfs +++ a/mm/slub.c @@ -38,6 +38,7 @@ #include <linux/random.h> #include <kunit/test.h> +#include <linux/debugfs.h> #include <trace/events/kmem.h> #include "internal.h" @@ -238,6 +239,12 @@ static inline int sysfs_slab_alias(struc { return 0; } #endif +#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_SLUB_DEBUG) +static void debugfs_slab_add(struct kmem_cache *); +#else +static inline void debugfs_slab_add(struct kmem_cache *s) { } +#endif + static inline void stat(const struct kmem_cache *s, enum stat_item si) { #ifdef CONFIG_SLUB_STATS @@ -4593,6 +4600,9 @@ int __kmem_cache_create(struct kmem_cach if (err) __kmem_cache_release(s); + if (s->flags & SLAB_STORE_USER) + debugfs_slab_add(s); + return err; } @@ -4739,6 +4749,7 @@ long validate_slab_cache(struct kmem_cac } EXPORT_SYMBOL(validate_slab_cache); +#ifdef CONFIG_DEBUG_FS /* * Generate lists of code addresses where slabcache objects are allocated * and freed. @@ -4762,6 +4773,8 @@ struct loc_track { struct location *loc; }; +static struct dentry *slab_debugfs_root; + static void free_loc_track(struct loc_track *t) { if (t->max) @@ -4878,82 +4891,7 @@ static void process_slab(struct loc_trac add_location(t, s, get_track(s, p, alloc)); put_map(map); } - -static int list_locations(struct kmem_cache *s, char *buf, - enum track_item alloc) -{ - int len = 0; - unsigned long i; - struct loc_track t = { 0, 0, NULL }; - int node; - struct kmem_cache_node *n; - - if (!alloc_loc_track(&t, PAGE_SIZE / sizeof(struct location), - GFP_KERNEL)) { - return sysfs_emit(buf, "Out of memory\n"); - } - /* Push back cpu slabs */ - flush_all(s); - - for_each_kmem_cache_node(s, node, n) { - unsigned long flags; - struct page *page; - - if (!atomic_long_read(&n->nr_slabs)) - continue; - - spin_lock_irqsave(&n->list_lock, flags); - list_for_each_entry(page, &n->partial, slab_list) - process_slab(&t, s, page, alloc); - list_for_each_entry(page, &n->full, slab_list) - process_slab(&t, s, page, alloc); - spin_unlock_irqrestore(&n->list_lock, flags); - } - - for (i = 0; i < t.count; i++) { - struct location *l = &t.loc[i]; - - len += sysfs_emit_at(buf, len, "%7ld ", l->count); - - if (l->addr) - len += sysfs_emit_at(buf, len, "%pS", (void *)l->addr); - else - len += sysfs_emit_at(buf, len, "<not-available>"); - - if (l->sum_time != l->min_time) - len += sysfs_emit_at(buf, len, " age=%ld/%ld/%ld", - l->min_time, - (long)div_u64(l->sum_time, - l->count), - l->max_time); - else - len += sysfs_emit_at(buf, len, " age=%ld", l->min_time); - - if (l->min_pid != l->max_pid) - len += sysfs_emit_at(buf, len, " pid=%ld-%ld", - l->min_pid, l->max_pid); - else - len += sysfs_emit_at(buf, len, " pid=%ld", - l->min_pid); - - if (num_online_cpus() > 1 && - !cpumask_empty(to_cpumask(l->cpus))) - len += sysfs_emit_at(buf, len, " cpus=%*pbl", - cpumask_pr_args(to_cpumask(l->cpus))); - - if (nr_online_nodes > 1 && !nodes_empty(l->nodes)) - len += sysfs_emit_at(buf, len, " nodes=%*pbl", - nodemask_pr_args(&l->nodes)); - - len += sysfs_emit_at(buf, len, "\n"); - } - - free_loc_track(&t); - if (!t.count) - len += sysfs_emit_at(buf, len, "No data\n"); - - return len; -} +#endif /* CONFIG_DEBUG_FS */ #endif /* CONFIG_SLUB_DEBUG */ #ifdef CONFIG_SYSFS @@ -5343,21 +5281,6 @@ static ssize_t validate_store(struct kme } SLAB_ATTR(validate); -static ssize_t alloc_calls_show(struct kmem_cache *s, char *buf) -{ - if (!(s->flags & SLAB_STORE_USER)) - return -ENOSYS; - return list_locations(s, buf, TRACK_ALLOC); -} -SLAB_ATTR_RO(alloc_calls); - -static ssize_t free_calls_show(struct kmem_cache *s, char *buf) -{ - if (!(s->flags & SLAB_STORE_USER)) - return -ENOSYS; - return list_locations(s, buf, TRACK_FREE); -} -SLAB_ATTR_RO(free_calls); #endif /* CONFIG_SLUB_DEBUG */ #ifdef CONFIG_FAILSLAB @@ -5521,8 +5444,6 @@ static struct attribute *slab_attrs[] = &poison_attr.attr, &store_user_attr.attr, &validate_attr.attr, - &alloc_calls_attr.attr, - &free_calls_attr.attr, #endif #ifdef CONFIG_ZONE_DMA &cache_dma_attr.attr, @@ -5810,6 +5731,173 @@ static int __init slab_sysfs_init(void) __initcall(slab_sysfs_init); #endif /* CONFIG_SYSFS */ +#if defined(CONFIG_SLUB_DEBUG) && defined(CONFIG_DEBUG_FS) +static int slab_debugfs_show(struct seq_file *seq, void *v) +{ + + struct location *l; + unsigned int idx = *(unsigned int *)v; + struct loc_track *t = seq->private; + + if (idx < t->count) { + l = &t->loc[idx]; + + seq_printf(seq, "%7ld ", l->count); + + if (l->addr) + seq_printf(seq, "%pS", (void *)l->addr); + else + seq_puts(seq, "<not-available>"); + + if (l->sum_time != l->min_time) { + seq_printf(seq, " age=%ld/%llu/%ld", + l->min_time, div_u64(l->sum_time, l->count), + l->max_time); + } else + seq_printf(seq, " age=%ld", l->min_time); + + if (l->min_pid != l->max_pid) + seq_printf(seq, " pid=%ld-%ld", l->min_pid, l->max_pid); + else + seq_printf(seq, " pid=%ld", + l->min_pid); + + if (num_online_cpus() > 1 && !cpumask_empty(to_cpumask(l->cpus))) + seq_printf(seq, " cpus=%*pbl", + cpumask_pr_args(to_cpumask(l->cpus))); + + if (nr_online_nodes > 1 && !nodes_empty(l->nodes)) + seq_printf(seq, " nodes=%*pbl", + nodemask_pr_args(&l->nodes)); + + seq_puts(seq, "\n"); + } + + if (!idx && !t->count) + seq_puts(seq, "No data\n"); + + return 0; +} + +static void slab_debugfs_stop(struct seq_file *seq, void *v) +{ +} + +static void *slab_debugfs_next(struct seq_file *seq, void *v, loff_t *ppos) +{ + struct loc_track *t = seq->private; + + v = ppos; + ++*ppos; + if (*ppos <= t->count) + return v; + + return NULL; +} + +static void *slab_debugfs_start(struct seq_file *seq, loff_t *ppos) +{ + return ppos; +} + +static const struct seq_operations slab_debugfs_sops = { + .start = slab_debugfs_start, + .next = slab_debugfs_next, + .stop = slab_debugfs_stop, + .show = slab_debugfs_show, +}; + +static int slab_debug_trace_open(struct inode *inode, struct file *filep) +{ + + struct kmem_cache_node *n; + enum track_item alloc; + int node; + struct loc_track *t = __seq_open_private(filep, &slab_debugfs_sops, + sizeof(struct loc_track)); + struct kmem_cache *s = file_inode(filep)->i_private; + + if (strcmp(filep->f_path.dentry->d_name.name, "alloc_traces") == 0) + alloc = TRACK_ALLOC; + else + alloc = TRACK_FREE; + + if (!alloc_loc_track(t, PAGE_SIZE / sizeof(struct location), GFP_KERNEL)) + return -ENOMEM; + + /* Push back cpu slabs */ + flush_all(s); + + for_each_kmem_cache_node(s, node, n) { + unsigned long flags; + struct page *page; + + if (!atomic_long_read(&n->nr_slabs)) + continue; + + spin_lock_irqsave(&n->list_lock, flags); + list_for_each_entry(page, &n->partial, slab_list) + process_slab(t, s, page, alloc); + list_for_each_entry(page, &n->full, slab_list) + process_slab(t, s, page, alloc); + spin_unlock_irqrestore(&n->list_lock, flags); + } + + return 0; +} + +static int slab_debug_trace_release(struct inode *inode, struct file *file) +{ + struct seq_file *seq = file->private_data; + struct loc_track *t = seq->private; + + free_loc_track(t); + return seq_release_private(inode, file); +} + +static const struct file_operations slab_debugfs_fops = { + .open = slab_debug_trace_open, + .read = seq_read, + .llseek = seq_lseek, + .release = slab_debug_trace_release, +}; + +static void debugfs_slab_add(struct kmem_cache *s) +{ + struct dentry *slab_cache_dir; + + if (unlikely(!slab_debugfs_root)) + return; + + slab_cache_dir = debugfs_create_dir(s->name, slab_debugfs_root); + + debugfs_create_file("alloc_traces", 0400, + slab_cache_dir, s, &slab_debugfs_fops); + + debugfs_create_file("free_traces", 0400, + slab_cache_dir, s, &slab_debugfs_fops); +} + +void debugfs_slab_release(struct kmem_cache *s) +{ + debugfs_remove_recursive(debugfs_lookup(s->name, slab_debugfs_root)); +} + +static int __init slab_debugfs_init(void) +{ + struct kmem_cache *s; + + slab_debugfs_root = debugfs_create_dir("slab", NULL); + + list_for_each_entry(s, &slab_caches, list) + if (s->flags & SLAB_STORE_USER) + debugfs_slab_add(s); + + return 0; + +} +__initcall(slab_debugfs_init); +#endif /* * The /proc/slabinfo ABI */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 032/192] mm/slub: add taint after the errors are printed 2021-06-29 2:32 incoming Andrew Morton ` (30 preceding siblings ...) 2021-06-29 2:34 ` [patch 031/192] mm: slub: move sysfs slab alloc/free interfaces to debugfs Andrew Morton @ 2021-06-29 2:34 ` Andrew Morton 2021-06-29 2:35 ` [patch 033/192] mm/kmemleak: fix possible wrong memory scanning period Andrew Morton ` (159 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:34 UTC (permalink / raw) To: akpm, aquini, atomlin, cl, iamjoonsoo.kim, linux-mm, mm-commits, penberg, quic_c_gdjako, rientjes, torvalds, vbabka From: Georgi Djakov <quic_c_gdjako@quicinc.com> Subject: mm/slub: add taint after the errors are printed When running the kernel with panic_on_taint, the usual slub debug error messages are not being printed when object corruption happens. That's because we panic in add_taint(), which is called before printing the additional information. This is a bit unfortunate as the error messages are actually very useful, especially before a panic. Let's fix this by moving add_taint() after the errors are printed on the console. Link: https://lkml.kernel.org/r/1623860738-146761-1-git-send-email-quic_c_gdjako@quicinc.com Signed-off-by: Georgi Djakov <quic_c_gdjako@quicinc.com> Acked-by: Rafael Aquini <aquini@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slub.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/mm/slub.c~mm-slub-add-taint-after-the-errors-are-printed +++ a/mm/slub.c @@ -708,8 +708,6 @@ static void slab_bug(struct kmem_cache * pr_err("=============================================================================\n"); pr_err("BUG %s (%s): %pV\n", s->name, print_tainted(), &vaf); pr_err("-----------------------------------------------------------------------------\n\n"); - - add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); va_end(args); } @@ -790,6 +788,7 @@ void object_err(struct kmem_cache *s, st slab_bug(s, "%s", reason); print_trailer(s, page, object); + add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); } static __printf(3, 4) void slab_err(struct kmem_cache *s, struct page *page, @@ -807,6 +806,7 @@ static __printf(3, 4) void slab_err(stru slab_bug(s, "%s", buf); print_page_info(page); dump_stack(); + add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); } static void init_object(struct kmem_cache *s, void *object, u8 val) @@ -858,6 +858,7 @@ static int check_bytes_and_report(struct fault, end - 1, fault - addr, fault[0], value); print_trailer(s, page, object); + add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); skip_bug_print: restore_bytes(s, what, value, fault, end); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 033/192] mm/kmemleak: fix possible wrong memory scanning period 2021-06-29 2:32 incoming Andrew Morton ` (31 preceding siblings ...) 2021-06-29 2:34 ` [patch 032/192] mm/slub: add taint after the errors are printed Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 034/192] dax: fix ENOMEM handling in grab_mapping_entry() Andrew Morton ` (158 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, catalin.marinas, linux-mm, mm-commits, torvalds, yanfei.xu From: Yanfei Xu <yanfei.xu@windriver.com> Subject: mm/kmemleak: fix possible wrong memory scanning period This commit contains 3 modifications: 1. Convert the type of jiffies_scan_wait to "unsigned long". 2. Use READ/WRITE_ONCE() for accessing "jiffies_scan_wait". 3. Fix the possible wrong memory scanning period. If you set a large memory scanning period like blow, then the "secs" variable will be non-zero, however the value of "jiffies_scan_wait" will be zero. echo "scan=0x10000000" > /sys/kernel/debug/kmemleak It is because the type of the msecs_to_jiffies()'s parameter is "unsigned int", and the "secs * 1000" is larger than its max value. This in turn leads a unexpected jiffies_scan_wait, maybe zero. We corret it by replacing kstrtoul() with kstrtouint(), and check the msecs to prevent it larger than UINT_MAX. Link: https://lkml.kernel.org/r/20210613174022.23044-1-yanfei.xu@windriver.com Signed-off-by: Yanfei Xu <yanfei.xu@windriver.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/kmemleak.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) --- a/mm/kmemleak.c~mm-kmemleak-fix-the-possible-wrong-memory-scanning-period +++ a/mm/kmemleak.c @@ -219,7 +219,7 @@ static struct task_struct *scan_thread; static unsigned long jiffies_min_age; static unsigned long jiffies_last_scan; /* delay between automatic memory scannings */ -static signed long jiffies_scan_wait; +static unsigned long jiffies_scan_wait; /* enables or disables the task stacks scanning */ static int kmemleak_stack_scan = 1; /* protects the memory scanning, parameters and debug/kmemleak file access */ @@ -1567,7 +1567,7 @@ static int kmemleak_scan_thread(void *ar } while (!kthread_should_stop()) { - signed long timeout = jiffies_scan_wait; + signed long timeout = READ_ONCE(jiffies_scan_wait); mutex_lock(&scan_mutex); kmemleak_scan(); @@ -1807,14 +1807,20 @@ static ssize_t kmemleak_write(struct fil else if (strncmp(buf, "scan=off", 8) == 0) stop_scan_thread(); else if (strncmp(buf, "scan=", 5) == 0) { - unsigned long secs; + unsigned secs; + unsigned long msecs; - ret = kstrtoul(buf + 5, 0, &secs); + ret = kstrtouint(buf + 5, 0, &secs); if (ret < 0) goto out; + + msecs = secs * MSEC_PER_SEC; + if (msecs > UINT_MAX) + msecs = UINT_MAX; + stop_scan_thread(); - if (secs) { - jiffies_scan_wait = msecs_to_jiffies(secs * 1000); + if (msecs) { + WRITE_ONCE(jiffies_scan_wait, msecs_to_jiffies(msecs)); start_scan_thread(); } } else if (strncmp(buf, "scan", 4) == 0) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 034/192] dax: fix ENOMEM handling in grab_mapping_entry() 2021-06-29 2:32 incoming Andrew Morton ` (32 preceding siblings ...) 2021-06-29 2:35 ` [patch 033/192] mm/kmemleak: fix possible wrong memory scanning period Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 035/192] tools/vm/page_owner_sort.c: check malloc() return Andrew Morton ` (157 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, aneesh.kumar, dan.j.williams, jack, linux-mm, mm-commits, torvalds, willy From: Jan Kara <jack@suse.cz> Subject: dax: fix ENOMEM handling in grab_mapping_entry() grab_mapping_entry() has a bug in handling of ENOMEM condition. Suppose we have a PMD entry at index i which we are downgrading to a PTE entry. grab_mapping_entry() will set pmd_downgrade to true, lock the entry, clear the entry in xarray, and decrement mapping->nrpages. The it will call: entry = dax_make_entry(pfn_to_pfn_t(0), flags); dax_lock_entry(xas, entry); which inserts new PTE entry into xarray. However this may fail allocating the new node. We handle this by: if (xas_nomem(xas, mapping_gfp_mask(mapping) & ~__GFP_HIGHMEM)) goto retry; however pmd_downgrade stays set to true even though 'entry' returned from get_unlocked_entry() will be NULL now. And we will go again through the downgrade branch. This is mostly harmless except that mapping->nrpages is decremented again and we temporarily have an invalid entry stored in xarray. Fix the problem by setting pmd_downgrade to false each time we lookup the entry we work with so that it matches the entry we found. Link: https://lkml.kernel.org/r/20210622160015.18004-1-jack@suse.cz Fixes: b15cd800682f ("dax: Convert page fault handlers to XArray") Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/dax.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/dax.c~dax-fix-enomem-handling-in-grab_mapping_entry +++ a/fs/dax.c @@ -488,10 +488,11 @@ static void *grab_mapping_entry(struct x struct address_space *mapping, unsigned int order) { unsigned long index = xas->xa_index; - bool pmd_downgrade = false; /* splitting PMD entry into PTE entries? */ + bool pmd_downgrade; /* splitting PMD entry into PTE entries? */ void *entry; retry: + pmd_downgrade = false; xas_lock_irq(xas); entry = get_unlocked_entry(xas, order); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 035/192] tools/vm/page_owner_sort.c: check malloc() return 2021-06-29 2:32 incoming Andrew Morton ` (33 preceding siblings ...) 2021-06-29 2:35 ` [patch 034/192] dax: fix ENOMEM handling in grab_mapping_entry() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 036/192] mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() Andrew Morton ` (156 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, linux-mm, mm-commits, tangbin, torvalds, zhangshengju From: Tang Bin <tangbin@cmss.chinamobile.com> Subject: tools/vm/page_owner_sort.c: check malloc() return Link: https://lkml.kernel.org/r/20210506131402.10416-1-tangbin@cmss.chinamobile.com Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- tools/vm/page_owner_sort.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/tools/vm/page_owner_sort.c~tools-vm-page_owner_sortc-fix-the-potential-stack-overflow-risk +++ a/tools/vm/page_owner_sort.c @@ -132,6 +132,10 @@ int main(int argc, char **argv) qsort(list, list_size, sizeof(list[0]), compare_txt); list2 = malloc(sizeof(*list) * list_size); + if (!list2) { + printf("Out of memory\n"); + exit(1); + } printf("culling\n"); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 036/192] mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() 2021-06-29 2:32 incoming Andrew Morton ` (34 preceding siblings ...) 2021-06-29 2:35 ` [patch 035/192] tools/vm/page_owner_sort.c: check malloc() return Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 037/192] mm: mmap_lock: use local locks instead of disabling preemption Andrew Morton ` (155 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, aneesh.kumar, anshuman.khandual, christophe.leroy, linux-mm, mm-commits, torvalds From: Anshuman Khandual <anshuman.khandual@arm.com> Subject: mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() On certain platforms, THP support could not just be validated via the build option CONFIG_TRANSPARENT_HUGEPAGE. Instead has_transparent_hugepage() also needs to be called upon to verify THP runtime support. Otherwise the debug test will just run into unusable THP helpers like in the case of a 4K hash config on powerpc platform [1]. This just moves all pfn_pmd() and pfn_pud() after THP runtime validation with has_transparent_hugepage() which prevents the mentioned problem. [1] https://bugzilla.kernel.org/show_bug.cgi?id=213069 Link: https://lkml.kernel.org/r/1621397588-19211-1-git-send-email-anshuman.khandual@arm.com Fixes: 787d563b8642 ("mm/debug_vm_pgtable: fix kernel crash by checking for THP support") Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/debug_vm_pgtable.c | 63 ++++++++++++++++++++++++++++++++-------- 1 file changed, 51 insertions(+), 12 deletions(-) --- a/mm/debug_vm_pgtable.c~mm-debug_vm_pgtable-ensure-thp-availability-via-has_transparent_hugepage +++ a/mm/debug_vm_pgtable.c @@ -146,13 +146,14 @@ static void __init pte_savedwrite_tests( static void __init pmd_basic_tests(unsigned long pfn, int idx) { pgprot_t prot = protection_map[idx]; - pmd_t pmd = pfn_pmd(pfn, prot); unsigned long val = idx, *ptr = &val; + pmd_t pmd; if (!has_transparent_hugepage()) return; pr_debug("Validating PMD basic (%pGv)\n", ptr); + pmd = pfn_pmd(pfn, prot); /* * This test needs to be executed after the given page table entry @@ -185,7 +186,7 @@ static void __init pmd_advanced_tests(st unsigned long pfn, unsigned long vaddr, pgprot_t prot, pgtable_t pgtable) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; if (!has_transparent_hugepage()) return; @@ -232,9 +233,14 @@ static void __init pmd_advanced_tests(st static void __init pmd_leaf_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; + + if (!has_transparent_hugepage()) + return; pr_debug("Validating PMD leaf\n"); + pmd = pfn_pmd(pfn, prot); + /* * PMD based THP is a leaf entry. */ @@ -267,12 +273,16 @@ static void __init pmd_huge_tests(pmd_t static void __init pmd_savedwrite_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; if (!IS_ENABLED(CONFIG_NUMA_BALANCING)) return; + if (!has_transparent_hugepage()) + return; + pr_debug("Validating PMD saved write\n"); + pmd = pfn_pmd(pfn, prot); WARN_ON(!pmd_savedwrite(pmd_mk_savedwrite(pmd_clear_savedwrite(pmd)))); WARN_ON(pmd_savedwrite(pmd_clear_savedwrite(pmd_mk_savedwrite(pmd)))); } @@ -281,13 +291,14 @@ static void __init pmd_savedwrite_tests( static void __init pud_basic_tests(struct mm_struct *mm, unsigned long pfn, int idx) { pgprot_t prot = protection_map[idx]; - pud_t pud = pfn_pud(pfn, prot); unsigned long val = idx, *ptr = &val; + pud_t pud; if (!has_transparent_hugepage()) return; pr_debug("Validating PUD basic (%pGv)\n", ptr); + pud = pfn_pud(pfn, prot); /* * This test needs to be executed after the given page table entry @@ -323,7 +334,7 @@ static void __init pud_advanced_tests(st unsigned long pfn, unsigned long vaddr, pgprot_t prot) { - pud_t pud = pfn_pud(pfn, prot); + pud_t pud; if (!has_transparent_hugepage()) return; @@ -332,6 +343,7 @@ static void __init pud_advanced_tests(st /* Align the address wrt HPAGE_PUD_SIZE */ vaddr &= HPAGE_PUD_MASK; + pud = pfn_pud(pfn, prot); set_pud_at(mm, vaddr, pudp, pud); pudp_set_wrprotect(mm, vaddr, pudp); pud = READ_ONCE(*pudp); @@ -370,9 +382,13 @@ static void __init pud_advanced_tests(st static void __init pud_leaf_tests(unsigned long pfn, pgprot_t prot) { - pud_t pud = pfn_pud(pfn, prot); + pud_t pud; + + if (!has_transparent_hugepage()) + return; pr_debug("Validating PUD leaf\n"); + pud = pfn_pud(pfn, prot); /* * PUD based THP is a leaf entry. */ @@ -654,12 +670,16 @@ static void __init pte_protnone_tests(un #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void __init pmd_protnone_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pmd_mkhuge(pfn_pmd(pfn, prot)); + pmd_t pmd; if (!IS_ENABLED(CONFIG_NUMA_BALANCING)) return; + if (!has_transparent_hugepage()) + return; + pr_debug("Validating PMD protnone\n"); + pmd = pmd_mkhuge(pfn_pmd(pfn, prot)); WARN_ON(!pmd_protnone(pmd)); WARN_ON(!pmd_present(pmd)); } @@ -679,18 +699,26 @@ static void __init pte_devmap_tests(unsi #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void __init pmd_devmap_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; + + if (!has_transparent_hugepage()) + return; pr_debug("Validating PMD devmap\n"); + pmd = pfn_pmd(pfn, prot); WARN_ON(!pmd_devmap(pmd_mkdevmap(pmd))); } #ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot) { - pud_t pud = pfn_pud(pfn, prot); + pud_t pud; + + if (!has_transparent_hugepage()) + return; pr_debug("Validating PUD devmap\n"); + pud = pfn_pud(pfn, prot); WARN_ON(!pud_devmap(pud_mkdevmap(pud))); } #else /* !CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ @@ -733,25 +761,33 @@ static void __init pte_swap_soft_dirty_t #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void __init pmd_soft_dirty_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; if (!IS_ENABLED(CONFIG_MEM_SOFT_DIRTY)) return; + if (!has_transparent_hugepage()) + return; + pr_debug("Validating PMD soft dirty\n"); + pmd = pfn_pmd(pfn, prot); WARN_ON(!pmd_soft_dirty(pmd_mksoft_dirty(pmd))); WARN_ON(pmd_soft_dirty(pmd_clear_soft_dirty(pmd))); } static void __init pmd_swap_soft_dirty_tests(unsigned long pfn, pgprot_t prot) { - pmd_t pmd = pfn_pmd(pfn, prot); + pmd_t pmd; if (!IS_ENABLED(CONFIG_MEM_SOFT_DIRTY) || !IS_ENABLED(CONFIG_ARCH_ENABLE_THP_MIGRATION)) return; + if (!has_transparent_hugepage()) + return; + pr_debug("Validating PMD swap soft dirty\n"); + pmd = pfn_pmd(pfn, prot); WARN_ON(!pmd_swp_soft_dirty(pmd_swp_mksoft_dirty(pmd))); WARN_ON(pmd_swp_soft_dirty(pmd_swp_clear_soft_dirty(pmd))); } @@ -780,6 +816,9 @@ static void __init pmd_swap_tests(unsign swp_entry_t swp; pmd_t pmd; + if (!has_transparent_hugepage()) + return; + pr_debug("Validating PMD swap\n"); pmd = pfn_pmd(pfn, prot); swp = __pmd_to_swp_entry(pmd); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 037/192] mm: mmap_lock: use local locks instead of disabling preemption 2021-06-29 2:32 incoming Andrew Morton ` (35 preceding siblings ...) 2021-06-29 2:35 ` [patch 036/192] mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 038/192] mm/page_reporting: fix code style in __page_reporting_request() Andrew Morton ` (154 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axelrasmussen, linux-mm, mm-commits, nsaenzju, rostedt, torvalds, vbabka From: Nicolas Saenz Julienne <nsaenzju@redhat.com> Subject: mm: mmap_lock: use local locks instead of disabling preemption mmap_lock will explicitly disable/enable preemption upon manipulating its local CPU variables. This is to be expected, but in this case, it doesn't play well with PREEMPT_RT. The preemption disabled code section also takes a spin-lock. Spin-locks in RT systems will try to schedule, which is exactly what we're trying to avoid. To mitigate this, convert the explicit preemption handling to local_locks. Which are RT aware, and will disable migration instead of preemption when PREEMPT_RT=y. The faulty call trace looks like the following: __mmap_lock_do_trace_*() preempt_disable() get_mm_memcg_path() cgroup_path() kernfs_path_from_node() spin_lock_irqsave() /* Scheduling while atomic! */ Link: https://lkml.kernel.org/r/20210604163506.2103900-1-nsaenzju@redhat.com Fixes: 2b5067a8143e3 ("mm: mmap_lock: add tracepoints around lock acquisition ") Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Tested-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Axel Rasmussen <axelrasmussen@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mmap_lock.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-) --- a/mm/mmap_lock.c~mm-mmap_lock-use-local-locks-instead-of-disabling-preemption +++ a/mm/mmap_lock.c @@ -11,6 +11,7 @@ #include <linux/rcupdate.h> #include <linux/smp.h> #include <linux/trace_events.h> +#include <linux/local_lock.h> EXPORT_TRACEPOINT_SYMBOL(mmap_lock_start_locking); EXPORT_TRACEPOINT_SYMBOL(mmap_lock_acquire_returned); @@ -39,21 +40,30 @@ static int reg_refcount; /* Protected by */ #define CONTEXT_COUNT 4 -static DEFINE_PER_CPU(char __rcu *, memcg_path_buf); +struct memcg_path { + local_lock_t lock; + char __rcu *buf; + local_t buf_idx; +}; +static DEFINE_PER_CPU(struct memcg_path, memcg_paths) = { + .lock = INIT_LOCAL_LOCK(lock), + .buf_idx = LOCAL_INIT(0), +}; + static char **tmp_bufs; -static DEFINE_PER_CPU(int, memcg_path_buf_idx); /* Called with reg_lock held. */ static void free_memcg_path_bufs(void) { + struct memcg_path *memcg_path; int cpu; char **old = tmp_bufs; for_each_possible_cpu(cpu) { - *(old++) = rcu_dereference_protected( - per_cpu(memcg_path_buf, cpu), + memcg_path = per_cpu_ptr(&memcg_paths, cpu); + *(old++) = rcu_dereference_protected(memcg_path->buf, lockdep_is_held(®_lock)); - rcu_assign_pointer(per_cpu(memcg_path_buf, cpu), NULL); + rcu_assign_pointer(memcg_path->buf, NULL); } /* Wait for inflight memcg_path_buf users to finish. */ @@ -88,7 +98,7 @@ int trace_mmap_lock_reg(void) new = kmalloc(MEMCG_PATH_BUF_SIZE * CONTEXT_COUNT, GFP_KERNEL); if (new == NULL) goto out_fail_free; - rcu_assign_pointer(per_cpu(memcg_path_buf, cpu), new); + rcu_assign_pointer(per_cpu_ptr(&memcg_paths, cpu)->buf, new); /* Don't need to wait for inflights, they'd have gotten NULL. */ } @@ -122,23 +132,24 @@ out: static inline char *get_memcg_path_buf(void) { + struct memcg_path *memcg_path = this_cpu_ptr(&memcg_paths); char *buf; int idx; rcu_read_lock(); - buf = rcu_dereference(*this_cpu_ptr(&memcg_path_buf)); + buf = rcu_dereference(memcg_path->buf); if (buf == NULL) { rcu_read_unlock(); return NULL; } - idx = this_cpu_add_return(memcg_path_buf_idx, MEMCG_PATH_BUF_SIZE) - + idx = local_add_return(MEMCG_PATH_BUF_SIZE, &memcg_path->buf_idx) - MEMCG_PATH_BUF_SIZE; return &buf[idx]; } static inline void put_memcg_path_buf(void) { - this_cpu_sub(memcg_path_buf_idx, MEMCG_PATH_BUF_SIZE); + local_sub(MEMCG_PATH_BUF_SIZE, &this_cpu_ptr(&memcg_paths)->buf_idx); rcu_read_unlock(); } @@ -179,14 +190,14 @@ out: #define TRACE_MMAP_LOCK_EVENT(type, mm, ...) \ do { \ const char *memcg_path; \ - preempt_disable(); \ + local_lock(&memcg_paths.lock); \ memcg_path = get_mm_memcg_path(mm); \ trace_mmap_lock_##type(mm, \ memcg_path != NULL ? memcg_path : "", \ ##__VA_ARGS__); \ if (likely(memcg_path != NULL)) \ put_memcg_path_buf(); \ - preempt_enable(); \ + local_unlock(&memcg_paths.lock); \ } while (0) #else /* !CONFIG_MEMCG */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 038/192] mm/page_reporting: fix code style in __page_reporting_request() 2021-06-29 2:32 incoming Andrew Morton ` (36 preceding siblings ...) 2021-06-29 2:35 ` [patch 037/192] mm: mmap_lock: use local locks instead of disabling preemption Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 039/192] mm/page_reporting: export reporting order as module parameter Andrew Morton ` (153 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, alexanderduyck, anshuman.khandual, catalin.marinas, david, gshan, linux-mm, mm-commits, mst, torvalds, will From: Gavin Shan <gshan@redhat.com> Subject: mm/page_reporting: fix code style in __page_reporting_request() Patch series "mm/page_reporting: Make page reporting work on arm64 with 64KB page size", v4. The page reporting threshold is currently equal to @pageblock_order, which is 13 and 512MB on arm64 with 64KB base page size selected. The page reporting won't be triggered if the freeing page can't come up with a free area like that huge. The condition is hard to be met, especially when the system memory becomes fragmented. This series intends to solve the issue by having page reporting threshold as 5 (2MB) on arm64 with 64KB base page size. The patches are organized as: PATCH[1/4] Fix some coding style in __page_reporting_request(). PATCH[2/4] Represents page reporting order with variable so that it can be exported as module parameter. PATCH[3/4] Allows the device driver (e.g. virtio_balloon) to specify the page reporting order when the device info is registered. PATCH[4/4] Specifies the page reporting order to 5, corresponding to 2MB in size on ARM64 when 64KB base page size is used. This patch (of 4): The lines of comments would be starting with one, instead two space. This corrects the style. Link: https://lkml.kernel.org/r/20210625014710.42954-1-gshan@redhat.com Link: https://lkml.kernel.org/r/20210625014710.42954-2-gshan@redhat.com Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_reporting.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/page_reporting.c~mm-page_reporting-fix-code-style-in-__page_reporting_request +++ a/mm/page_reporting.c @@ -31,8 +31,8 @@ __page_reporting_request(struct page_rep return; /* - * If reporting is already active there is nothing we need to do. - * Test against 0 as that represents PAGE_REPORTING_IDLE. + * If reporting is already active there is nothing we need to do. + * Test against 0 as that represents PAGE_REPORTING_IDLE. */ state = atomic_xchg(&prdev->state, PAGE_REPORTING_REQUESTED); if (state != PAGE_REPORTING_IDLE) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 039/192] mm/page_reporting: export reporting order as module parameter 2021-06-29 2:32 incoming Andrew Morton ` (37 preceding siblings ...) 2021-06-29 2:35 ` [patch 038/192] mm/page_reporting: fix code style in __page_reporting_request() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 040/192] mm/page_reporting: allow driver to specify reporting order Andrew Morton ` (152 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, alexanderduyck, anshuman.khandual, catalin.marinas, david, gshan, linux-mm, mm-commits, mst, torvalds, will From: Gavin Shan <gshan@redhat.com> Subject: mm/page_reporting: export reporting order as module parameter The macro PAGE_REPORTING_MIN_ORDER is defined as the page reporting threshold. It can't be adjusted at runtime. This introduces a variable (@page_reporting_order) to replace the marcro (PAGE_REPORTING_MIN_ORDER). MAX_ORDER is assigned to it initially, meaning the page reporting is disabled. It will be specified by driver if valid one is provided. Otherwise, it will fall back to @pageblock_order. It's also exported so that the page reporting order can be adjusted at runtime. Link: https://lkml.kernel.org/r/20210625014710.42954-3-gshan@redhat.com Signed-off-by: Gavin Shan <gshan@redhat.com> Suggested-by: David Hildenbrand <david@redhat.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/kernel-parameters.txt | 6 ++++++ mm/page_reporting.c | 9 +++++++-- mm/page_reporting.h | 5 ++--- 3 files changed, 15 insertions(+), 5 deletions(-) --- a/Documentation/admin-guide/kernel-parameters.txt~mm-page_reporting-export-reporting-order-as-module-parameter +++ a/Documentation/admin-guide/kernel-parameters.txt @@ -3566,6 +3566,12 @@ off: turn off poisoning (default) on: turn on poisoning + page_reporting.page_reporting_order= + [KNL] Minimal page reporting order + Format: <integer> + Adjust the minimal page reporting order. The page + reporting is disabled when it exceeds (MAX_ORDER-1). + panic= [KNL] Kernel behaviour on panic: delay <timeout> timeout > 0: seconds before rebooting timeout = 0: wait forever --- a/mm/page_reporting.c~mm-page_reporting-export-reporting-order-as-module-parameter +++ a/mm/page_reporting.c @@ -4,12 +4,17 @@ #include <linux/page_reporting.h> #include <linux/gfp.h> #include <linux/export.h> +#include <linux/module.h> #include <linux/delay.h> #include <linux/scatterlist.h> #include "page_reporting.h" #include "internal.h" +unsigned int page_reporting_order = MAX_ORDER; +module_param(page_reporting_order, uint, 0644); +MODULE_PARM_DESC(page_reporting_order, "Set page reporting order"); + #define PAGE_REPORTING_DELAY (2 * HZ) static struct page_reporting_dev_info __rcu *pr_dev_info __read_mostly; @@ -229,7 +234,7 @@ page_reporting_process_zone(struct page_ /* Generate minimum watermark to be able to guarantee progress */ watermark = low_wmark_pages(zone) + - (PAGE_REPORTING_CAPACITY << PAGE_REPORTING_MIN_ORDER); + (PAGE_REPORTING_CAPACITY << page_reporting_order); /* * Cancel request if insufficient free memory or if we failed @@ -239,7 +244,7 @@ page_reporting_process_zone(struct page_ return err; /* Process each free list starting from lowest order/mt */ - for (order = PAGE_REPORTING_MIN_ORDER; order < MAX_ORDER; order++) { + for (order = page_reporting_order; order < MAX_ORDER; order++) { for (mt = 0; mt < MIGRATE_TYPES; mt++) { /* We do not pull pages from the isolate free list */ if (is_migrate_isolate(mt)) --- a/mm/page_reporting.h~mm-page_reporting-export-reporting-order-as-module-parameter +++ a/mm/page_reporting.h @@ -10,10 +10,9 @@ #include <linux/pgtable.h> #include <linux/scatterlist.h> -#define PAGE_REPORTING_MIN_ORDER pageblock_order - #ifdef CONFIG_PAGE_REPORTING DECLARE_STATIC_KEY_FALSE(page_reporting_enabled); +extern unsigned int page_reporting_order; void __page_reporting_notify(void); static inline bool page_reported(struct page *page) @@ -38,7 +37,7 @@ static inline void page_reporting_notify return; /* Determine if we have crossed reporting threshold */ - if (order < PAGE_REPORTING_MIN_ORDER) + if (order < page_reporting_order) return; /* This will add a few cycles, but should be called infrequently */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 040/192] mm/page_reporting: allow driver to specify reporting order 2021-06-29 2:32 incoming Andrew Morton ` (38 preceding siblings ...) 2021-06-29 2:35 ` [patch 039/192] mm/page_reporting: export reporting order as module parameter Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 041/192] virtio_balloon: specify page reporting order if needed Andrew Morton ` (151 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, alexanderduyck, anshuman.khandual, catalin.marinas, david, gshan, linux-mm, mm-commits, mst, torvalds, will From: Gavin Shan <gshan@redhat.com> Subject: mm/page_reporting: allow driver to specify reporting order The page reporting order (threshold) is sticky to @pageblock_order by default. The page reporting can never be triggered because the freeing page can't come up with a free area like that huge. The situation becomes worse when the system memory becomes heavily fragmented. For example, the following configurations are used on ARM64 when 64KB base page size is enabled. In this specific case, the page reporting won't be triggered until the freeing page comes up with a 512MB free area. That's hard to be met, especially when the system memory becomes heavily fragmented. PAGE_SIZE: 64KB HPAGE_SIZE: 512MB pageblock_order: 13 (512MB) MAX_ORDER: 14 This allows the drivers to specify the page reporting order when the page reporting device is registered. It falls back to @pageblock_order if it's not specified by the driver. The existing users (hv_balloon and virtio_balloon) don't specify it and @pageblock_order is still taken as their page reporting order. So this shouldn't introduce any functional changes. Link: https://lkml.kernel.org/r/20210625014710.42954-4-gshan@redhat.com Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/page_reporting.h | 3 +++ mm/page_reporting.c | 6 ++++++ 2 files changed, 9 insertions(+) --- a/include/linux/page_reporting.h~mm-page_reporting-allow-driver-to-specify-reporting-order +++ a/include/linux/page_reporting.h @@ -18,6 +18,9 @@ struct page_reporting_dev_info { /* Current state of page reporting */ atomic_t state; + + /* Minimal order of page reporting */ + unsigned int order; }; /* Tear-down and bring-up for page reporting devices */ --- a/mm/page_reporting.c~mm-page_reporting-allow-driver-to-specify-reporting-order +++ a/mm/page_reporting.c @@ -329,6 +329,12 @@ int page_reporting_register(struct page_ goto err_out; } + /* + * Update the page reporting order if it's specified by driver. + * Otherwise, it falls back to @pageblock_order. + */ + page_reporting_order = prdev->order ? : pageblock_order; + /* initialize state and work structures */ atomic_set(&prdev->state, PAGE_REPORTING_IDLE); INIT_DELAYED_WORK(&prdev->work, &page_reporting_process); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 041/192] virtio_balloon: specify page reporting order if needed 2021-06-29 2:32 incoming Andrew Morton ` (39 preceding siblings ...) 2021-06-29 2:35 ` [patch 040/192] mm/page_reporting: allow driver to specify reporting order Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 042/192] mm: page-writeback: kill get_writeback_state() comments Andrew Morton ` (150 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, alexanderduyck, anshuman.khandual, catalin.marinas, david, gshan, linux-mm, mm-commits, mst, torvalds, will From: Gavin Shan <gshan@redhat.com> Subject: virtio_balloon: specify page reporting order if needed The page reporting won't be triggered if the freeing page can't come up with a free area, whose size is equal or bigger than the threshold (page reporting order). The default page reporting order, equal to @pageblock_order, is too huge on some architectures to trigger page reporting. One example is ARM64 when 64KB base page size is used. PAGE_SIZE: 64KB pageblock_order: 13 (512MB) MAX_ORDER: 14 This specifies the page reporting order to 5 (2MB) for this specific case so that page reporting can be triggered. Link: https://lkml.kernel.org/r/20210625014710.42954-5-gshan@redhat.com Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: David Hildenbrand <david@redhat.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/virtio/virtio_balloon.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/drivers/virtio/virtio_balloon.c~virtio_balloon-specify-page-reporting-order-if-needed +++ a/drivers/virtio/virtio_balloon.c @@ -993,6 +993,23 @@ static int virtballoon_probe(struct virt goto out_unregister_oom; } + /* + * The default page reporting order is @pageblock_order, which + * corresponds to 512MB in size on ARM64 when 64KB base page + * size is used. The page reporting won't be triggered if the + * freeing page can't come up with a free area like that huge. + * So we specify the page reporting order to 5, corresponding + * to 2MB. It helps to avoid THP splitting if 4KB base page + * size is used by host. + * + * Ideally, the page reporting order is selected based on the + * host's base page size. However, it needs more work to report + * that value. The hard-coded order would be fine currently. + */ +#if defined(CONFIG_ARM64) && defined(CONFIG_ARM64_64K_PAGES) + vb->pr_dev_info.order = 5; +#endif + err = page_reporting_register(&vb->pr_dev_info); if (err) goto out_unregister_oom; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 042/192] mm: page-writeback: kill get_writeback_state() comments 2021-06-29 2:32 incoming Andrew Morton ` (40 preceding siblings ...) 2021-06-29 2:35 ` [patch 041/192] virtio_balloon: specify page reporting order if needed Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 043/192] mm/page-writeback: Fix performance when BDI's share of ratio is 0 Andrew Morton ` (149 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, linux-mm, mm-commits, torvalds, wangkefeng.wang From: Kefeng Wang <wangkefeng.wang@huawei.com> Subject: mm: page-writeback: kill get_writeback_state() comments The get_writeback_state() has gone since 2006, kill related comments. Link: https://lkml.kernel.org/r/20210508125026.56600-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page-writeback.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) --- a/mm/page-writeback.c~mm-page-writeback-kill-get_writeback_state-comments +++ a/mm/page-writeback.c @@ -1869,10 +1869,9 @@ DEFINE_PER_CPU(int, dirty_throttle_leaks * which was newly dirtied. The function will periodically check the system's * dirty state and will initiate writeback if needed. * - * On really big machines, get_writeback_state is expensive, so try to avoid - * calling it too often (ratelimiting). But once we're over the dirty memory - * limit we decrease the ratelimiting by a lot, to prevent individual processes - * from overshooting the limit by (ratelimit_pages) each. + * Once we're over the dirty memory limit we decrease the ratelimiting + * by a lot, to prevent individual processes from overshooting the limit + * by (ratelimit_pages) each. */ void balance_dirty_pages_ratelimited(struct address_space *mapping) { @@ -2045,8 +2044,6 @@ void laptop_sync_completion(void) /* * If ratelimit_pages is too high then we can get into dirty-data overload * if a large number of processes all perform writes at the same time. - * If it is too low then SMP machines will call the (expensive) - * get_writeback_state too often. * * Here we set ratelimit_pages to a level which ensures that when all CPUs are * dirtying in parallel, we cannot go more than 3% (1/32) over the dirty memory _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 043/192] mm/page-writeback: Fix performance when BDI's share of ratio is 0. 2021-06-29 2:32 incoming Andrew Morton ` (41 preceding siblings ...) 2021-06-29 2:35 ` [patch 042/192] mm: page-writeback: kill get_writeback_state() comments Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 044/192] mm/page-writeback: update the comment of Dirty position control Andrew Morton ` (148 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, jack, linux-mm, mm-commits, mszeredi, sedat.dilek, tj, torvalds, wuchi.zero From: Chi Wu <wuchi.zero@gmail.com> Subject: mm/page-writeback: Fix performance when BDI's share of ratio is 0. Fix performance when BDI's share of ratio is 0. The issue is similar to commit 74d369443325 ("writeback: Fix performance regression in wb_over_bg_thresh()"). Balance_dirty_pages and the writeback worker will also disagree on whether writeback when a BDI uses BDI_CAP_STRICTLIMIT and BDI's share of the thresh ratio is zero. For example, A thread on cpu0 writes 32 pages and then balance_dirty_pages, it will wake up background writeback and pauses because wb_dirty > wb->wb_thresh = 0 (share of thresh ratio is zero). A thread may runs on cpu0 again because scheduler prefers pre_cpu. Then writeback worker may runs on other cpus(1,2..) which causes the value of wb_stat(wb, WB_RECLAIMABLE) in wb_over_bg_thresh is 0 and does not writeback and returns. Thus, balance_dirty_pages keeps looping, sleeping and then waking up the worker who will do nothing. It remains stuck in this state until the writeback worker hit the right dirty cpu or the dirty pages expire. The fix that we should get the wb_stat_sum radically when thresh is low. Link: https://lkml.kernel.org/r/20210428225046.16301-1-wuchi.zero@gmail.com Signed-off-by: Chi Wu <wuchi.zero@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Tejun Heo <tj@kernel.org> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Jens Axboe <axboe@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page-writeback.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) --- a/mm/page-writeback.c~mm-page-writeback-fix-performance-when-bdis-share-of-ratio-is-0 +++ a/mm/page-writeback.c @@ -1944,6 +1944,8 @@ bool wb_over_bg_thresh(struct bdi_writeb struct dirty_throttle_control * const gdtc = &gdtc_stor; struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ? &mdtc_stor : NULL; + unsigned long reclaimable; + unsigned long thresh; /* * Similar to balance_dirty_pages() but ignores pages being written @@ -1956,8 +1958,13 @@ bool wb_over_bg_thresh(struct bdi_writeb if (gdtc->dirty > gdtc->bg_thresh) return true; - if (wb_stat(wb, WB_RECLAIMABLE) > - wb_calc_thresh(gdtc->wb, gdtc->bg_thresh)) + thresh = wb_calc_thresh(gdtc->wb, gdtc->bg_thresh); + if (thresh < 2 * wb_stat_error()) + reclaimable = wb_stat_sum(wb, WB_RECLAIMABLE); + else + reclaimable = wb_stat(wb, WB_RECLAIMABLE); + + if (reclaimable > thresh) return true; if (mdtc) { @@ -1971,8 +1978,13 @@ bool wb_over_bg_thresh(struct bdi_writeb if (mdtc->dirty > mdtc->bg_thresh) return true; - if (wb_stat(wb, WB_RECLAIMABLE) > - wb_calc_thresh(mdtc->wb, mdtc->bg_thresh)) + thresh = wb_calc_thresh(mdtc->wb, mdtc->bg_thresh); + if (thresh < 2 * wb_stat_error()) + reclaimable = wb_stat_sum(wb, WB_RECLAIMABLE); + else + reclaimable = wb_stat(wb, WB_RECLAIMABLE); + + if (reclaimable > thresh) return true; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 044/192] mm/page-writeback: update the comment of Dirty position control 2021-06-29 2:32 incoming Andrew Morton ` (42 preceding siblings ...) 2021-06-29 2:35 ` [patch 043/192] mm/page-writeback: Fix performance when BDI's share of ratio is 0 Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 045/192] mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() Andrew Morton ` (147 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, hcochran, jack, linux-mm, mm-commits, mszeredi, sedat.dilek, tj, torvalds, wuchi.zero From: Chi Wu <wuchi.zero@gmail.com> Subject: mm/page-writeback: update the comment of Dirty position control As the value of pos_ratio_polynom() clamp between 0 and 2LL << RATELIMIT_CALC_SHIFT, the global control line should be consistent with it. Link: https://lkml.kernel.org/r/20210511103606.3732-1-wuchi.zero@gmail.com Signed-off-by: Chi Wu <wuchi.zero@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@fb.com> Cc: Howard Cochran <hcochran@kernelspring.com> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page-writeback.c~mm-page-writeback-update-the-comment-of-dirty-position-control +++ a/mm/page-writeback.c @@ -845,7 +845,7 @@ static long long pos_ratio_polynom(unsig * ^ pos_ratio * | * | |<===== global dirty control scope ======>| - * 2.0 .............* + * 2.0 * * * * * * * * | .* * | . * * | . * _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 045/192] mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() 2021-06-29 2:32 incoming Andrew Morton ` (43 preceding siblings ...) 2021-06-29 2:35 ` [patch 044/192] mm/page-writeback: update the comment of Dirty position control Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 046/192] writeback, cgroup: do not switch inodes with I_WILL_FREE flag Andrew Morton ` (146 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, hcochran, jack, linux-mm, mm-commits, mszeredi, sedat.dilek, tj, torvalds, wuchi.zero From: Chi Wu <wuchi.zero@gmail.com> Subject: mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() As account_page_dirtied() was always protected by xa_lock_irqsave(), so using __this_cpu_inc() is better. Link: https://lkml.kernel.org/r/20210512144742.4764-1-wuchi.zero@gmail.com Signed-off-by: Chi Wu <wuchi.zero@gmail.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Howard Cochran <hcochran@kernelspring.com> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page-writeback.c~mm-page-writeback-use-__this_cpu_inc-in-account_page_dirtied +++ a/mm/page-writeback.c @@ -2445,7 +2445,7 @@ void account_page_dirtied(struct page *p inc_wb_stat(wb, WB_DIRTIED); task_io_account_write(PAGE_SIZE); current->nr_dirtied++; - this_cpu_inc(bdp_ratelimits); + __this_cpu_inc(bdp_ratelimits); mem_cgroup_track_foreign_dirty(page, wb); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 046/192] writeback, cgroup: do not switch inodes with I_WILL_FREE flag 2021-06-29 2:32 incoming Andrew Morton ` (44 preceding siblings ...) 2021-06-29 2:35 ` [patch 045/192] mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 047/192] writeback, cgroup: add smp_mb() to cgroup_writeback_umount() Andrew Morton ` (145 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: do not switch inodes with I_WILL_FREE flag Patch series "cgroup, blkcg: prevent dirty inodes to pin dying memory cgroups", v9. When an inode is getting dirty for the first time it's associated with a wb structure (see __inode_attach_wb()). It can later be switched to another wb (if e.g. some other cgroup is writing a lot of data to the same inode), but otherwise stays attached to the original wb until being reclaimed. The problem is that the wb structure holds a reference to the original memory and blkcg cgroups. So if an inode has been dirty once and later is actively used in read-only mode, it has a good chance to pin down the original memory and blkcg cgroups forever. This is often the case with services bringing data for other services, e.g. updating some rpm packages. In the real life it becomes a problem due to a large size of the memcg structure, which can easily be 1000x larger than an inode. Also a really large number of dying cgroups can raise different scalability issues, e.g. making the memory reclaim costly and less effective. To solve the problem inodes should be eventually detached from the corresponding writeback structure. It's inefficient to do it after every writeback completion. Instead it can be done whenever the original memory cgroup is offlined and writeback structure is getting killed. Scanning over a (potentially long) list of inodes and detach them from the writeback structure can take quite some time. To avoid scanning all inodes, attached inodes are kept on a new list (b_attached). To make it less noticeable to a user, the scanning and switching is performed from a work context. Big thanks to Jan Kara, Dennis Zhou, Hillf Danton and Tejun Heo for their ideas and contribution to this patchset. This patch (of 8): If an inode's state has I_WILL_FREE flag set, the inode will be freed soon, so there is no point in trying to switch the inode to a different cgwb. I_WILL_FREE was ignored since the introduction of the inode switching, so it looks like it doesn't lead to any noticeable issues for a user. This is why the patch is not intended for a stable backport. Link: https://lkml.kernel.org/r/20210608230225.2078447-1-guro@fb.com Link: https://lkml.kernel.org/r/20210608230225.2078447-2-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Suggested-by: Jan Kara <jack@suse.cz> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dennis Zhou <dennis@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-do-not-switch-inodes-with-i_will_free-flag +++ a/fs/fs-writeback.c @@ -389,10 +389,10 @@ static void inode_switch_wbs_work_fn(str xa_lock_irq(&mapping->i_pages); /* - * Once I_FREEING is visible under i_lock, the eviction path owns - * the inode and we shouldn't modify ->i_io_list. + * Once I_FREEING or I_WILL_FREE are visible under i_lock, the eviction + * path owns the inode and we shouldn't modify ->i_io_list. */ - if (unlikely(inode->i_state & I_FREEING)) + if (unlikely(inode->i_state & (I_FREEING | I_WILL_FREE))) goto skip_switch; trace_inode_switch_wbs(inode, old_wb, new_wb); @@ -517,7 +517,7 @@ static void inode_switch_wbs(struct inod /* while holding I_WB_SWITCH, no one else can update the association */ spin_lock(&inode->i_lock); if (!(inode->i_sb->s_flags & SB_ACTIVE) || - inode->i_state & (I_WB_SWITCH | I_FREEING) || + inode->i_state & (I_WB_SWITCH | I_FREEING | I_WILL_FREE) || inode_to_wb(inode) == isw->new_wb) { spin_unlock(&inode->i_lock); goto out_free; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 047/192] writeback, cgroup: add smp_mb() to cgroup_writeback_umount() 2021-06-29 2:32 incoming Andrew Morton ` (45 preceding siblings ...) 2021-06-29 2:35 ` [patch 046/192] writeback, cgroup: do not switch inodes with I_WILL_FREE flag Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 048/192] writeback, cgroup: increment isw_nr_in_flight before grabbing an inode Andrew Morton ` (144 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: add smp_mb() to cgroup_writeback_umount() A full memory barrier is required between clearing SB_ACTIVE flag in generic_shutdown_super() and checking isw_nr_in_flight in cgroup_writeback_umount(), otherwise a new switch operation might be scheduled after atomic_read(&isw_nr_in_flight) returned 0. This would result in a non-flushed isw_wq, and a potential crash. The problem hasn't yet been seen in the real life and was discovered by Jan Kara by looking into the code. Link: https://lkml.kernel.org/r/20210608230225.2078447-3-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Suggested-by: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Jan Kara <jack@suse.com> Cc: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/fs/fs-writeback.c~writeback-cgroup-add-smp_mb-to-cgroup_writeback_umount +++ a/fs/fs-writeback.c @@ -1000,6 +1000,12 @@ out_bdi_put: */ void cgroup_writeback_umount(void) { + /* + * SB_ACTIVE should be reliably cleared before checking + * isw_nr_in_flight, see generic_shutdown_super(). + */ + smp_mb(); + if (atomic_read(&isw_nr_in_flight)) { /* * Use rcu_barrier() to wait for all pending callbacks to _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 048/192] writeback, cgroup: increment isw_nr_in_flight before grabbing an inode 2021-06-29 2:32 incoming Andrew Morton ` (46 preceding siblings ...) 2021-06-29 2:35 ` [patch 047/192] writeback, cgroup: add smp_mb() to cgroup_writeback_umount() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 049/192] writeback, cgroup: switch to rcu_work API in inode_switch_wbs() Andrew Morton ` (143 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: increment isw_nr_in_flight before grabbing an inode isw_nr_in_flight is used to determine whether the inode switch queue should be flushed from the umount path. Currently it's increased after grabbing an inode and even scheduling the switch work. It means the umount path can walk past cleanup_offline_cgwb() with active inode references, which can result in a "Busy inodes after unmount." message and use-after-free issues (with inode->i_sb which gets freed). Fix it by incrementing isw_nr_in_flight before doing anything with the inode and decrementing in the case when switching wasn't scheduled. The problem hasn't yet been seen in the real life and was discovered by Jan Kara by looking into the code. Link: https://lkml.kernel.org/r/20210608230225.2078447-4-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Suggested-by: Jan Kara <jack@suse.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-increment-isw_nr_in_flight-before-grabbing-an-inode +++ a/fs/fs-writeback.c @@ -505,6 +505,8 @@ static void inode_switch_wbs(struct inod if (!isw) return; + atomic_inc(&isw_nr_in_flight); + /* find and pin the new wb */ rcu_read_lock(); memcg_css = css_from_id(new_wb_id, &memory_cgrp_subsys); @@ -535,11 +537,10 @@ static void inode_switch_wbs(struct inod * Let's continue after I_WB_SWITCH is guaranteed to be visible. */ call_rcu(&isw->rcu_head, inode_switch_wbs_rcu_fn); - - atomic_inc(&isw_nr_in_flight); return; out_free: + atomic_dec(&isw_nr_in_flight); if (isw->new_wb) wb_put(isw->new_wb); kfree(isw); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 049/192] writeback, cgroup: switch to rcu_work API in inode_switch_wbs() 2021-06-29 2:32 incoming Andrew Morton ` (47 preceding siblings ...) 2021-06-29 2:35 ` [patch 048/192] writeback, cgroup: increment isw_nr_in_flight before grabbing an inode Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 050/192] writeback, cgroup: keep list of inodes attached to bdi_writeback Andrew Morton ` (142 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: switch to rcu_work API in inode_switch_wbs() Inode's wb switching requires two steps divided by an RCU grace period. It's currently implemented as an RCU callback inode_switch_wbs_rcu_fn(), which schedules inode_switch_wbs_work_fn() as a work. Switching to the rcu_work API allows to do the same in a cleaner and slightly shorter form. Link: https://lkml.kernel.org/r/20210608230225.2078447-5-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Dennis Zhou <dennis@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-switch-to-rcu_work-api-in-inode_switch_wbs +++ a/fs/fs-writeback.c @@ -335,8 +335,7 @@ struct inode_switch_wbs_context { struct inode *inode; struct bdi_writeback *new_wb; - struct rcu_head rcu_head; - struct work_struct work; + struct rcu_work work; }; static void bdi_down_write_wb_switch_rwsem(struct backing_dev_info *bdi) @@ -352,7 +351,7 @@ static void bdi_up_write_wb_switch_rwsem static void inode_switch_wbs_work_fn(struct work_struct *work) { struct inode_switch_wbs_context *isw = - container_of(work, struct inode_switch_wbs_context, work); + container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); struct inode *inode = isw->inode; struct backing_dev_info *bdi = inode_to_bdi(inode); struct address_space *mapping = inode->i_mapping; @@ -469,16 +468,6 @@ skip_switch: atomic_dec(&isw_nr_in_flight); } -static void inode_switch_wbs_rcu_fn(struct rcu_head *rcu_head) -{ - struct inode_switch_wbs_context *isw = container_of(rcu_head, - struct inode_switch_wbs_context, rcu_head); - - /* needs to grab bh-unsafe locks, bounce to work item */ - INIT_WORK(&isw->work, inode_switch_wbs_work_fn); - queue_work(isw_wq, &isw->work); -} - /** * inode_switch_wbs - change the wb association of an inode * @inode: target inode @@ -536,7 +525,8 @@ static void inode_switch_wbs(struct inod * lock so that stat transfer can synchronize against them. * Let's continue after I_WB_SWITCH is guaranteed to be visible. */ - call_rcu(&isw->rcu_head, inode_switch_wbs_rcu_fn); + INIT_RCU_WORK(&isw->work, inode_switch_wbs_work_fn); + queue_rcu_work(isw_wq, &isw->work); return; out_free: _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 050/192] writeback, cgroup: keep list of inodes attached to bdi_writeback 2021-06-29 2:32 incoming Andrew Morton ` (48 preceding siblings ...) 2021-06-29 2:35 ` [patch 049/192] writeback, cgroup: switch to rcu_work API in inode_switch_wbs() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 051/192] writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() Andrew Morton ` (141 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: keep list of inodes attached to bdi_writeback Currently there is no way to iterate over inodes attached to a specific cgwb structure. It limits the ability to efficiently reclaim the writeback structure itself and associated memory and block cgroup structures without scanning all inodes belonging to a sb, which can be prohibitively expensive. While dirty/in-active-writeback an inode belongs to one of the bdi_writeback's io lists: b_dirty, b_io, b_more_io and b_dirty_time. Once cleaned up, it's removed from all io lists. So the inode->i_io_list can be reused to maintain the list of inodes, attached to a bdi_writeback structure. This patch introduces a new wb->b_attached list, which contains all inodes which were dirty at least once and are attached to the given cgwb. Inodes attached to the root bdi_writeback structures are never placed on such list. The following patch will use this list to try to release cgwbs structures more efficiently. Link: https://lkml.kernel.org/r/20210608230225.2078447-6-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Suggested-by: Jan Kara <jack@suse.cz> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Dennis Zhou <dennis@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 93 ++++++++++++++++++----------- include/linux/backing-dev-defs.h | 1 mm/backing-dev.c | 2 3 files changed, 62 insertions(+), 34 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-keep-list-of-inodes-attached-to-bdi_writeback +++ a/fs/fs-writeback.c @@ -131,25 +131,6 @@ static bool inode_io_list_move_locked(st return false; } -/** - * inode_io_list_del_locked - remove an inode from its bdi_writeback IO list - * @inode: inode to be removed - * @wb: bdi_writeback @inode is being removed from - * - * Remove @inode which may be on one of @wb->b_{dirty|io|more_io} lists and - * clear %WB_has_dirty_io if all are empty afterwards. - */ -static void inode_io_list_del_locked(struct inode *inode, - struct bdi_writeback *wb) -{ - assert_spin_locked(&wb->list_lock); - assert_spin_locked(&inode->i_lock); - - inode->i_state &= ~I_SYNC_QUEUED; - list_del_init(&inode->i_io_list); - wb_io_lists_depopulated(wb); -} - static void wb_wakeup(struct bdi_writeback *wb) { spin_lock_bh(&wb->work_lock); @@ -279,6 +260,28 @@ void __inode_attach_wb(struct inode *ino EXPORT_SYMBOL_GPL(__inode_attach_wb); /** + * inode_cgwb_move_to_attached - put the inode onto wb->b_attached list + * @inode: inode of interest with i_lock held + * @wb: target bdi_writeback + * + * Remove the inode from wb's io lists and if necessarily put onto b_attached + * list. Only inodes attached to cgwb's are kept on this list. + */ +static void inode_cgwb_move_to_attached(struct inode *inode, + struct bdi_writeback *wb) +{ + assert_spin_locked(&wb->list_lock); + assert_spin_locked(&inode->i_lock); + + inode->i_state &= ~I_SYNC_QUEUED; + if (wb != &wb->bdi->wb) + list_move(&inode->i_io_list, &wb->b_attached); + else + list_del_init(&inode->i_io_list); + wb_io_lists_depopulated(wb); +} + +/** * locked_inode_to_wb_and_lock_list - determine a locked inode's wb and lock it * @inode: inode of interest with i_lock held * @@ -418,21 +421,28 @@ static void inode_switch_wbs_work_fn(str wb_get(new_wb); /* - * Transfer to @new_wb's IO list if necessary. The specific list - * @inode was on is ignored and the inode is put on ->b_dirty which - * is always correct including from ->b_dirty_time. The transfer - * preserves @inode->dirtied_when ordering. + * Transfer to @new_wb's IO list if necessary. If the @inode is dirty, + * the specific list @inode was on is ignored and the @inode is put on + * ->b_dirty which is always correct including from ->b_dirty_time. + * The transfer preserves @inode->dirtied_when ordering. If the @inode + * was clean, it means it was on the b_attached list, so move it onto + * the b_attached list of @new_wb. */ if (!list_empty(&inode->i_io_list)) { - struct inode *pos; - - inode_io_list_del_locked(inode, old_wb); inode->i_wb = new_wb; - list_for_each_entry(pos, &new_wb->b_dirty, i_io_list) - if (time_after_eq(inode->dirtied_when, - pos->dirtied_when)) - break; - inode_io_list_move_locked(inode, new_wb, pos->i_io_list.prev); + + if (inode->i_state & I_DIRTY_ALL) { + struct inode *pos; + + list_for_each_entry(pos, &new_wb->b_dirty, i_io_list) + if (time_after_eq(inode->dirtied_when, + pos->dirtied_when)) + break; + inode_io_list_move_locked(inode, new_wb, + pos->i_io_list.prev); + } else { + inode_cgwb_move_to_attached(inode, new_wb); + } } else { inode->i_wb = new_wb; } @@ -1021,6 +1031,17 @@ fs_initcall(cgroup_writeback_init); static void bdi_down_write_wb_switch_rwsem(struct backing_dev_info *bdi) { } static void bdi_up_write_wb_switch_rwsem(struct backing_dev_info *bdi) { } +static void inode_cgwb_move_to_attached(struct inode *inode, + struct bdi_writeback *wb) +{ + assert_spin_locked(&wb->list_lock); + assert_spin_locked(&inode->i_lock); + + inode->i_state &= ~I_SYNC_QUEUED; + list_del_init(&inode->i_io_list); + wb_io_lists_depopulated(wb); +} + static struct bdi_writeback * locked_inode_to_wb_and_lock_list(struct inode *inode) __releases(&inode->i_lock) @@ -1121,7 +1142,11 @@ void inode_io_list_del(struct inode *ino wb = inode_to_wb_and_lock_list(inode); spin_lock(&inode->i_lock); - inode_io_list_del_locked(inode, wb); + + inode->i_state &= ~I_SYNC_QUEUED; + list_del_init(&inode->i_io_list); + wb_io_lists_depopulated(wb); + spin_unlock(&inode->i_lock); spin_unlock(&wb->list_lock); } @@ -1434,7 +1459,7 @@ static void requeue_inode(struct inode * inode->i_state &= ~I_SYNC_QUEUED; } else { /* The inode is clean. Remove from writeback lists. */ - inode_io_list_del_locked(inode, wb); + inode_cgwb_move_to_attached(inode, wb); } } @@ -1586,7 +1611,7 @@ static int writeback_single_inode(struct * responsible for the writeback lists. */ if (!(inode->i_state & I_DIRTY_ALL)) - inode_io_list_del_locked(inode, wb); + inode_cgwb_move_to_attached(inode, wb); spin_unlock(&wb->list_lock); inode_sync_complete(inode); out: --- a/include/linux/backing-dev-defs.h~writeback-cgroup-keep-list-of-inodes-attached-to-bdi_writeback +++ a/include/linux/backing-dev-defs.h @@ -154,6 +154,7 @@ struct bdi_writeback { struct cgroup_subsys_state *blkcg_css; /* and blkcg */ struct list_head memcg_node; /* anchored at memcg->cgwb_list */ struct list_head blkcg_node; /* anchored at blkcg->cgwb_list */ + struct list_head b_attached; /* attached inodes, protected by list_lock */ union { struct work_struct release_work; --- a/mm/backing-dev.c~writeback-cgroup-keep-list-of-inodes-attached-to-bdi_writeback +++ a/mm/backing-dev.c @@ -396,6 +396,7 @@ static void cgwb_release_workfn(struct w fprop_local_destroy_percpu(&wb->memcg_completions); percpu_ref_exit(&wb->refcnt); wb_exit(wb); + WARN_ON_ONCE(!list_empty(&wb->b_attached)); kfree_rcu(wb, rcu); } @@ -472,6 +473,7 @@ static int cgwb_create(struct backing_de wb->memcg_css = memcg_css; wb->blkcg_css = blkcg_css; + INIT_LIST_HEAD(&wb->b_attached); INIT_WORK(&wb->release_work, cgwb_release_workfn); set_bit(WB_registered, &wb->state); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 051/192] writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() 2021-06-29 2:32 incoming Andrew Morton ` (49 preceding siblings ...) 2021-06-29 2:35 ` [patch 050/192] writeback, cgroup: keep list of inodes attached to bdi_writeback Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:35 ` [patch 052/192] writeback, cgroup: support switching multiple inodes at once Andrew Morton ` (140 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() Split out the functional part of the inode_switch_wbs_work_fn() function as inode_do switch_wbs() to reuse it later for switching inodes attached to dying cgwbs. This commit doesn't bring any functional changes. Link: https://lkml.kernel.org/r/20210608230225.2078447-7-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Dennis Zhou <dennis@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-split-out-the-functional-part-of-inode_switch_wbs_work_fn +++ a/fs/fs-writeback.c @@ -351,15 +351,12 @@ static void bdi_up_write_wb_switch_rwsem up_write(&bdi->wb_switch_rwsem); } -static void inode_switch_wbs_work_fn(struct work_struct *work) +static void inode_do_switch_wbs(struct inode *inode, + struct bdi_writeback *new_wb) { - struct inode_switch_wbs_context *isw = - container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); - struct inode *inode = isw->inode; struct backing_dev_info *bdi = inode_to_bdi(inode); struct address_space *mapping = inode->i_mapping; struct bdi_writeback *old_wb = inode->i_wb; - struct bdi_writeback *new_wb = isw->new_wb; XA_STATE(xas, &mapping->i_pages, 0); struct page *page; bool switched = false; @@ -470,11 +467,17 @@ skip_switch: wb_wakeup(new_wb); wb_put(old_wb); } - wb_put(new_wb); +} - iput(inode); - kfree(isw); +static void inode_switch_wbs_work_fn(struct work_struct *work) +{ + struct inode_switch_wbs_context *isw = + container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); + inode_do_switch_wbs(isw->inode, isw->new_wb); + wb_put(isw->new_wb); + iput(isw->inode); + kfree(isw); atomic_dec(&isw_nr_in_flight); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 052/192] writeback, cgroup: support switching multiple inodes at once 2021-06-29 2:32 incoming Andrew Morton ` (50 preceding siblings ...) 2021-06-29 2:35 ` [patch 051/192] writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() Andrew Morton @ 2021-06-29 2:35 ` Andrew Morton 2021-06-29 2:36 ` [patch 053/192] writeback, cgroup: release dying cgwbs by switching attached inodes Andrew Morton ` (139 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:35 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: support switching multiple inodes at once Currently only a single inode can be switched to another writeback structure at once. That means to switch an inode a separate inode_switch_wbs_context structure must be allocated, and a separate rcu callback and work must be scheduled. It's fine for the existing ad-hoc switching, which is not happening that often, but sub-optimal for massive switching required in order to release a writeback structure. To prepare for it, let's add a support for switching multiple inodes at once. Instead of containing a single inode pointer, inode_switch_wbs_context will contain a NULL-terminated array of inode pointers. inode_do_switch_wbs() will be called for each inode. To optimize the locking bdi->wb_switch_rwsem, old_wb's and new_wb's list_locks will be acquired and released only once altogether for all inodes. wb_wakeup() will be also be called only once. Instead of calling wb_put(old_wb) after each successful switch, wb_put_many() is introduced and used. Link: https://lkml.kernel.org/r/20210608230225.2078447-8-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dennis Zhou <dennis@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 106 +++++++++++++++++------------ include/linux/backing-dev-defs.h | 18 ++++ 2 files changed, 80 insertions(+), 44 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-support-switching-multiple-inodes-at-once +++ a/fs/fs-writeback.c @@ -335,10 +335,18 @@ static struct bdi_writeback *inode_to_wb } struct inode_switch_wbs_context { - struct inode *inode; - struct bdi_writeback *new_wb; - struct rcu_work work; + + /* + * Multiple inodes can be switched at once. The switching procedure + * consists of two parts, separated by a RCU grace period. To make + * sure that the second part is executed for each inode gone through + * the first part, all inode pointers are placed into a NULL-terminated + * array embedded into struct inode_switch_wbs_context. Otherwise + * an inode could be left in a non-consistent state. + */ + struct bdi_writeback *new_wb; + struct inode *inodes[]; }; static void bdi_down_write_wb_switch_rwsem(struct backing_dev_info *bdi) @@ -351,39 +359,15 @@ static void bdi_up_write_wb_switch_rwsem up_write(&bdi->wb_switch_rwsem); } -static void inode_do_switch_wbs(struct inode *inode, +static bool inode_do_switch_wbs(struct inode *inode, + struct bdi_writeback *old_wb, struct bdi_writeback *new_wb) { - struct backing_dev_info *bdi = inode_to_bdi(inode); struct address_space *mapping = inode->i_mapping; - struct bdi_writeback *old_wb = inode->i_wb; XA_STATE(xas, &mapping->i_pages, 0); struct page *page; bool switched = false; - /* - * If @inode switches cgwb membership while sync_inodes_sb() is - * being issued, sync_inodes_sb() might miss it. Synchronize. - */ - down_read(&bdi->wb_switch_rwsem); - - /* - * By the time control reaches here, RCU grace period has passed - * since I_WB_SWITCH assertion and all wb stat update transactions - * between unlocked_inode_to_wb_begin/end() are guaranteed to be - * synchronizing against the i_pages lock. - * - * Grabbing old_wb->list_lock, inode->i_lock and the i_pages lock - * gives us exclusion against all wb related operations on @inode - * including IO list manipulations and stat updates. - */ - if (old_wb < new_wb) { - spin_lock(&old_wb->list_lock); - spin_lock_nested(&new_wb->list_lock, SINGLE_DEPTH_NESTING); - } else { - spin_lock(&new_wb->list_lock); - spin_lock_nested(&old_wb->list_lock, SINGLE_DEPTH_NESTING); - } spin_lock(&inode->i_lock); xa_lock_irq(&mapping->i_pages); @@ -458,25 +442,63 @@ skip_switch: xa_unlock_irq(&mapping->i_pages); spin_unlock(&inode->i_lock); - spin_unlock(&new_wb->list_lock); - spin_unlock(&old_wb->list_lock); - - up_read(&bdi->wb_switch_rwsem); - if (switched) { - wb_wakeup(new_wb); - wb_put(old_wb); - } + return switched; } static void inode_switch_wbs_work_fn(struct work_struct *work) { struct inode_switch_wbs_context *isw = container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); + struct backing_dev_info *bdi = inode_to_bdi(isw->inodes[0]); + struct bdi_writeback *old_wb = isw->inodes[0]->i_wb; + struct bdi_writeback *new_wb = isw->new_wb; + unsigned long nr_switched = 0; + struct inode **inodep; + + /* + * If @inode switches cgwb membership while sync_inodes_sb() is + * being issued, sync_inodes_sb() might miss it. Synchronize. + */ + down_read(&bdi->wb_switch_rwsem); + + /* + * By the time control reaches here, RCU grace period has passed + * since I_WB_SWITCH assertion and all wb stat update transactions + * between unlocked_inode_to_wb_begin/end() are guaranteed to be + * synchronizing against the i_pages lock. + * + * Grabbing old_wb->list_lock, inode->i_lock and the i_pages lock + * gives us exclusion against all wb related operations on @inode + * including IO list manipulations and stat updates. + */ + if (old_wb < new_wb) { + spin_lock(&old_wb->list_lock); + spin_lock_nested(&new_wb->list_lock, SINGLE_DEPTH_NESTING); + } else { + spin_lock(&new_wb->list_lock); + spin_lock_nested(&old_wb->list_lock, SINGLE_DEPTH_NESTING); + } + + for (inodep = isw->inodes; *inodep; inodep++) { + WARN_ON_ONCE((*inodep)->i_wb != old_wb); + if (inode_do_switch_wbs(*inodep, old_wb, new_wb)) + nr_switched++; + } + + spin_unlock(&new_wb->list_lock); + spin_unlock(&old_wb->list_lock); + + up_read(&bdi->wb_switch_rwsem); + + if (nr_switched) { + wb_wakeup(new_wb); + wb_put_many(old_wb, nr_switched); + } - inode_do_switch_wbs(isw->inode, isw->new_wb); - wb_put(isw->new_wb); - iput(isw->inode); + for (inodep = isw->inodes; *inodep; inodep++) + iput(*inodep); + wb_put(new_wb); kfree(isw); atomic_dec(&isw_nr_in_flight); } @@ -503,7 +525,7 @@ static void inode_switch_wbs(struct inod if (atomic_read(&isw_nr_in_flight) > WB_FRN_MAX_IN_FLIGHT) return; - isw = kzalloc(sizeof(*isw), GFP_ATOMIC); + isw = kzalloc(sizeof(*isw) + 2 * sizeof(struct inode *), GFP_ATOMIC); if (!isw) return; @@ -530,7 +552,7 @@ static void inode_switch_wbs(struct inod __iget(inode); spin_unlock(&inode->i_lock); - isw->inode = inode; + isw->inodes[0] = inode; /* * In addition to synchronizing among switchers, I_WB_SWITCH tells --- a/include/linux/backing-dev-defs.h~writeback-cgroup-support-switching-multiple-inodes-at-once +++ a/include/linux/backing-dev-defs.h @@ -240,8 +240,9 @@ static inline void wb_get(struct bdi_wri /** * wb_put - decrement a wb's refcount * @wb: bdi_writeback to put + * @nr: number of references to put */ -static inline void wb_put(struct bdi_writeback *wb) +static inline void wb_put_many(struct bdi_writeback *wb, unsigned long nr) { if (WARN_ON_ONCE(!wb->bdi)) { /* @@ -252,7 +253,16 @@ static inline void wb_put(struct bdi_wri } if (wb != &wb->bdi->wb) - percpu_ref_put(&wb->refcnt); + percpu_ref_put_many(&wb->refcnt, nr); +} + +/** + * wb_put - decrement a wb's refcount + * @wb: bdi_writeback to put + */ +static inline void wb_put(struct bdi_writeback *wb) +{ + wb_put_many(wb, 1); } /** @@ -281,6 +291,10 @@ static inline void wb_put(struct bdi_wri { } +static inline void wb_put_many(struct bdi_writeback *wb, unsigned long nr) +{ +} + static inline bool wb_dying(struct bdi_writeback *wb) { return false; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 053/192] writeback, cgroup: release dying cgwbs by switching attached inodes 2021-06-29 2:32 incoming Andrew Morton ` (51 preceding siblings ...) 2021-06-29 2:35 ` [patch 052/192] writeback, cgroup: support switching multiple inodes at once Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 054/192] fs: unexport __set_page_dirty Andrew Morton ` (138 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, axboe, dchinner, dennis, guro, jack, jack, linux-mm, mm-commits, tj, torvalds, viro, willy From: Roman Gushchin <guro@fb.com> Subject: writeback, cgroup: release dying cgwbs by switching attached inodes Asynchronously try to release dying cgwbs by switching attached inodes to the nearest living ancestor wb. It helps to get rid of per-cgroup writeback structures themselves and of pinned memory and block cgroups, which are significantly larger structures (mostly due to large per-cpu statistics data). This prevents memory waste and helps to avoid different scalability problems caused by large piles of dying cgroups. Reuse the existing mechanism of inode switching used for foreign inode detection. To speed things up batch up to 115 inode switching in a single operation (the maximum number is selected so that the resulting struct inode_switch_wbs_context can fit into 1024 bytes). Because every switching consists of two steps divided by an RCU grace period, it would be too slow without batching. Please note that the whole batch counts as a single operation (when increasing/decreasing isw_nr_in_flight). This allows to keep umounting working (flush the switching queue), however prevents cleanups from consuming the whole switching quota and effectively blocking the frn switching. A cgwb cleanup operation can fail due to different reasons (e.g. not enough memory, the cgwb has an in-flight/pending io, an attached inode in a wrong state, etc). In this case the next scheduled cleanup will make a new attempt. An attempt is made each time a new cgwb is offlined (in other words a memcg and/or a blkcg is deleted by a user). In the future an additional attempt scheduled by a timer can be implemented. [guro@fb.com: replace open-coded "115" with arithmetic] Link: https://lkml.kernel.org/r/YMEcSBcq/VXMiPPO@carbon.dhcp.thefacebook.com [guro@fb.com: add smp_mb() to inode_prepare_wbs_switch()] Link: https://lkml.kernel.org/r/YMFa+guFw7OFjf3X@carbon.dhcp.thefacebook.com [willy@infradead.org: fix documentation] Link: https://lkml.kernel.org/r/20210615200242.1716568-2-willy@infradead.org Link: https://lkml.kernel.org/r/20210608230225.2078447-9-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Dennis Zhou <dennis@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fs-writeback.c | 111 ++++++++++++++++++++++++++--- include/linux/backing-dev-defs.h | 1 include/linux/writeback.h | 1 mm/backing-dev.c | 64 ++++++++++++++++ 4 files changed, 165 insertions(+), 12 deletions(-) --- a/fs/fs-writeback.c~writeback-cgroup-release-dying-cgwbs-by-switching-attached-inodes +++ a/fs/fs-writeback.c @@ -225,6 +225,13 @@ void wb_wait_for_completion(struct wb_co /* one round can affect upto 5 slots */ #define WB_FRN_MAX_IN_FLIGHT 1024 /* don't queue too many concurrently */ +/* + * Maximum inodes per isw. A specific value has been chosen to make + * struct inode_switch_wbs_context fit into 1024 bytes kmalloc. + */ +#define WB_MAX_INODES_PER_ISW ((1024UL - sizeof(struct inode_switch_wbs_context)) \ + / sizeof(struct inode *)) + static atomic_t isw_nr_in_flight = ATOMIC_INIT(0); static struct workqueue_struct *isw_wq; @@ -503,6 +510,32 @@ static void inode_switch_wbs_work_fn(str atomic_dec(&isw_nr_in_flight); } +static bool inode_prepare_wbs_switch(struct inode *inode, + struct bdi_writeback *new_wb) +{ + /* + * Paired with smp_mb() in cgroup_writeback_umount(). + * isw_nr_in_flight must be increased before checking SB_ACTIVE and + * grabbing an inode, otherwise isw_nr_in_flight can be observed as 0 + * in cgroup_writeback_umount() and the isw_wq will be not flushed. + */ + smp_mb(); + + /* while holding I_WB_SWITCH, no one else can update the association */ + spin_lock(&inode->i_lock); + if (!(inode->i_sb->s_flags & SB_ACTIVE) || + inode->i_state & (I_WB_SWITCH | I_FREEING | I_WILL_FREE) || + inode_to_wb(inode) == new_wb) { + spin_unlock(&inode->i_lock); + return false; + } + inode->i_state |= I_WB_SWITCH; + __iget(inode); + spin_unlock(&inode->i_lock); + + return true; +} + /** * inode_switch_wbs - change the wb association of an inode * @inode: target inode @@ -540,17 +573,8 @@ static void inode_switch_wbs(struct inod if (!isw->new_wb) goto out_free; - /* while holding I_WB_SWITCH, no one else can update the association */ - spin_lock(&inode->i_lock); - if (!(inode->i_sb->s_flags & SB_ACTIVE) || - inode->i_state & (I_WB_SWITCH | I_FREEING | I_WILL_FREE) || - inode_to_wb(inode) == isw->new_wb) { - spin_unlock(&inode->i_lock); + if (!inode_prepare_wbs_switch(inode, isw->new_wb)) goto out_free; - } - inode->i_state |= I_WB_SWITCH; - __iget(inode); - spin_unlock(&inode->i_lock); isw->inodes[0] = inode; @@ -572,6 +596,73 @@ out_free: } /** + * cleanup_offline_cgwb - detach associated inodes + * @wb: target wb + * + * Switch all inodes attached to @wb to a nearest living ancestor's wb in order + * to eventually release the dying @wb. Returns %true if not all inodes were + * switched and the function has to be restarted. + */ +bool cleanup_offline_cgwb(struct bdi_writeback *wb) +{ + struct cgroup_subsys_state *memcg_css; + struct inode_switch_wbs_context *isw; + struct inode *inode; + int nr; + bool restart = false; + + isw = kzalloc(sizeof(*isw) + WB_MAX_INODES_PER_ISW * + sizeof(struct inode *), GFP_KERNEL); + if (!isw) + return restart; + + atomic_inc(&isw_nr_in_flight); + + for (memcg_css = wb->memcg_css->parent; memcg_css; + memcg_css = memcg_css->parent) { + isw->new_wb = wb_get_create(wb->bdi, memcg_css, GFP_KERNEL); + if (isw->new_wb) + break; + } + if (unlikely(!isw->new_wb)) + isw->new_wb = &wb->bdi->wb; /* wb_get() is noop for bdi's wb */ + + nr = 0; + spin_lock(&wb->list_lock); + list_for_each_entry(inode, &wb->b_attached, i_io_list) { + if (!inode_prepare_wbs_switch(inode, isw->new_wb)) + continue; + + isw->inodes[nr++] = inode; + + if (nr >= WB_MAX_INODES_PER_ISW - 1) { + restart = true; + break; + } + } + spin_unlock(&wb->list_lock); + + /* no attached inodes? bail out */ + if (nr == 0) { + atomic_dec(&isw_nr_in_flight); + wb_put(isw->new_wb); + kfree(isw); + return restart; + } + + /* + * In addition to synchronizing among switchers, I_WB_SWITCH tells + * the RCU protected stat update paths to grab the i_page + * lock so that stat transfer can synchronize against them. + * Let's continue after I_WB_SWITCH is guaranteed to be visible. + */ + INIT_RCU_WORK(&isw->work, inode_switch_wbs_work_fn); + queue_rcu_work(isw_wq, &isw->work); + + return restart; +} + +/** * wbc_attach_and_unlock_inode - associate wbc with target inode and unlock it * @wbc: writeback_control of interest * @inode: target inode --- a/include/linux/backing-dev-defs.h~writeback-cgroup-release-dying-cgwbs-by-switching-attached-inodes +++ a/include/linux/backing-dev-defs.h @@ -155,6 +155,7 @@ struct bdi_writeback { struct list_head memcg_node; /* anchored at memcg->cgwb_list */ struct list_head blkcg_node; /* anchored at blkcg->cgwb_list */ struct list_head b_attached; /* attached inodes, protected by list_lock */ + struct list_head offline_node; /* anchored at offline_cgwbs */ union { struct work_struct release_work; --- a/include/linux/writeback.h~writeback-cgroup-release-dying-cgwbs-by-switching-attached-inodes +++ a/include/linux/writeback.h @@ -221,6 +221,7 @@ void wbc_account_cgroup_owner(struct wri int cgroup_writeback_by_id(u64 bdi_id, int memcg_id, unsigned long nr_pages, enum wb_reason reason, struct wb_completion *done); void cgroup_writeback_umount(void); +bool cleanup_offline_cgwb(struct bdi_writeback *wb); /** * inode_attach_wb - associate an inode with its wb --- a/mm/backing-dev.c~writeback-cgroup-release-dying-cgwbs-by-switching-attached-inodes +++ a/mm/backing-dev.c @@ -371,12 +371,16 @@ static void wb_exit(struct bdi_writeback #include <linux/memcontrol.h> /* - * cgwb_lock protects bdi->cgwb_tree, blkcg->cgwb_list, and memcg->cgwb_list. - * bdi->cgwb_tree is also RCU protected. + * cgwb_lock protects bdi->cgwb_tree, blkcg->cgwb_list, offline_cgwbs and + * memcg->cgwb_list. bdi->cgwb_tree is also RCU protected. */ static DEFINE_SPINLOCK(cgwb_lock); static struct workqueue_struct *cgwb_release_wq; +static LIST_HEAD(offline_cgwbs); +static void cleanup_offline_cgwbs_workfn(struct work_struct *work); +static DECLARE_WORK(cleanup_offline_cgwbs_work, cleanup_offline_cgwbs_workfn); + static void cgwb_release_workfn(struct work_struct *work) { struct bdi_writeback *wb = container_of(work, struct bdi_writeback, @@ -395,6 +399,11 @@ static void cgwb_release_workfn(struct w fprop_local_destroy_percpu(&wb->memcg_completions); percpu_ref_exit(&wb->refcnt); + + spin_lock_irq(&cgwb_lock); + list_del(&wb->offline_node); + spin_unlock_irq(&cgwb_lock); + wb_exit(wb); WARN_ON_ONCE(!list_empty(&wb->b_attached)); kfree_rcu(wb, rcu); @@ -414,6 +423,7 @@ static void cgwb_kill(struct bdi_writeba WARN_ON(!radix_tree_delete(&wb->bdi->cgwb_tree, wb->memcg_css->id)); list_del(&wb->memcg_node); list_del(&wb->blkcg_node); + list_add(&wb->offline_node, &offline_cgwbs); percpu_ref_kill(&wb->refcnt); } @@ -635,6 +645,54 @@ static void cgwb_bdi_unregister(struct b mutex_unlock(&bdi->cgwb_release_mutex); } +/* + * cleanup_offline_cgwbs_workfn - try to release dying cgwbs + * + * Try to release dying cgwbs by switching attached inodes to the nearest + * living ancestor's writeback. Processed wbs are placed at the end + * of the list to guarantee the forward progress. + */ +static void cleanup_offline_cgwbs_workfn(struct work_struct *work) +{ + struct bdi_writeback *wb; + LIST_HEAD(processed); + + spin_lock_irq(&cgwb_lock); + + while (!list_empty(&offline_cgwbs)) { + wb = list_first_entry(&offline_cgwbs, struct bdi_writeback, + offline_node); + list_move(&wb->offline_node, &processed); + + /* + * If wb is dirty, cleaning up the writeback by switching + * attached inodes will result in an effective removal of any + * bandwidth restrictions, which isn't the goal. Instead, + * it can be postponed until the next time, when all io + * will be likely completed. If in the meantime some inodes + * will get re-dirtied, they should be eventually switched to + * a new cgwb. + */ + if (wb_has_dirty_io(wb)) + continue; + + if (!wb_tryget(wb)) + continue; + + spin_unlock_irq(&cgwb_lock); + while (cleanup_offline_cgwb(wb)) + cond_resched(); + spin_lock_irq(&cgwb_lock); + + wb_put(wb); + } + + if (!list_empty(&processed)) + list_splice_tail(&processed, &offline_cgwbs); + + spin_unlock_irq(&cgwb_lock); +} + /** * wb_memcg_offline - kill all wb's associated with a memcg being offlined * @memcg: memcg being offlined @@ -651,6 +709,8 @@ void wb_memcg_offline(struct mem_cgroup cgwb_kill(wb); memcg_cgwb_list->next = NULL; /* prevent new wb's */ spin_unlock_irq(&cgwb_lock); + + queue_work(system_unbound_wq, &cleanup_offline_cgwbs_work); } /** _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 054/192] fs: unexport __set_page_dirty 2021-06-29 2:32 incoming Andrew Morton ` (52 preceding siblings ...) 2021-06-29 2:36 ` [patch 053/192] writeback, cgroup: release dying cgwbs by switching attached inodes Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 055/192] fs: move ramfs_aops to libfs Andrew Morton ` (137 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: Christoph Hellwig <hch@lst.de> Subject: fs: unexport __set_page_dirty Patch series "remove the implicit .set_page_dirty default". This series cleans up a few lose ends around ->set_page_dirty, most importantly removes the default to the buffer head based on if no method is wired up. This patch (of 3): __set_page_dirty is only used by built-in code. Link: https://lkml.kernel.org/r/20210614061512.3966143-1-hch@lst.de Link: https://lkml.kernel.org/r/20210614061512.3966143-2-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/buffer.c | 1 - 1 file changed, 1 deletion(-) --- a/fs/buffer.c~fs-unexport-__set_page_dirty +++ a/fs/buffer.c @@ -611,7 +611,6 @@ void __set_page_dirty(struct page *page, } xa_unlock_irqrestore(&mapping->i_pages, flags); } -EXPORT_SYMBOL_GPL(__set_page_dirty); /* * Add a page to the dirty page list. _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 055/192] fs: move ramfs_aops to libfs 2021-06-29 2:32 incoming Andrew Morton ` (53 preceding siblings ...) 2021-06-29 2:36 ` [patch 054/192] fs: unexport __set_page_dirty Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 056/192] mm: require ->set_page_dirty to be explicitly wired up Andrew Morton ` (136 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: Christoph Hellwig <hch@lst.de> Subject: fs: move ramfs_aops to libfs Move the ramfs aops to libfs and reuse them for kernfs and configfs. Thosw two did not wire up ->set_page_dirty before and now get __set_page_dirty_no_writeback, which is the right one for no-writeback address_space usage. Drop the now unused exports of the libfs helpers only used for ramfs-style pagecache usage. Link: https://lkml.kernel.org/r/20210614061512.3966143-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/configfs/inode.c | 8 +------- fs/kernfs/inode.c | 8 +------- fs/libfs.c | 17 +++++++++++++---- fs/ramfs/inode.c | 9 +-------- include/linux/fs.h | 5 +---- 5 files changed, 17 insertions(+), 30 deletions(-) --- a/fs/configfs/inode.c~fs-move-ramfs_aops-to-libfs +++ a/fs/configfs/inode.c @@ -28,12 +28,6 @@ static struct lock_class_key default_group_class[MAX_LOCK_DEPTH]; #endif -static const struct address_space_operations configfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, -}; - static const struct inode_operations configfs_inode_operations ={ .setattr = configfs_setattr, }; @@ -114,7 +108,7 @@ struct inode *configfs_new_inode(umode_t struct inode * inode = new_inode(s); if (inode) { inode->i_ino = get_next_ino(); - inode->i_mapping->a_ops = &configfs_aops; + inode->i_mapping->a_ops = &ram_aops; inode->i_op = &configfs_inode_operations; if (sd->s_iattr) { --- a/fs/kernfs/inode.c~fs-move-ramfs_aops-to-libfs +++ a/fs/kernfs/inode.c @@ -17,12 +17,6 @@ #include "kernfs-internal.h" -static const struct address_space_operations kernfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, -}; - static const struct inode_operations kernfs_iops = { .permission = kernfs_iop_permission, .setattr = kernfs_iop_setattr, @@ -203,7 +197,7 @@ static void kernfs_init_inode(struct ker { kernfs_get(kn); inode->i_private = kn; - inode->i_mapping->a_ops = &kernfs_aops; + inode->i_mapping->a_ops = &ram_aops; inode->i_op = &kernfs_iops; inode->i_generation = kernfs_gen(kn); --- a/fs/libfs.c~fs-move-ramfs_aops-to-libfs +++ a/fs/libfs.c @@ -512,7 +512,7 @@ int simple_setattr(struct user_namespace } EXPORT_SYMBOL(simple_setattr); -int simple_readpage(struct file *file, struct page *page) +static int simple_readpage(struct file *file, struct page *page) { clear_highpage(page); flush_dcache_page(page); @@ -520,7 +520,6 @@ int simple_readpage(struct file *file, s unlock_page(page); return 0; } -EXPORT_SYMBOL(simple_readpage); int simple_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, @@ -568,7 +567,7 @@ EXPORT_SYMBOL(simple_write_begin); * * Use *ONLY* with simple_readpage() */ -int simple_write_end(struct file *file, struct address_space *mapping, +static int simple_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) { @@ -597,7 +596,17 @@ int simple_write_end(struct file *file, return copied; } -EXPORT_SYMBOL(simple_write_end); + +/* + * Provides ramfs-style behavior: data in the pagecache, but no writeback. + */ +const struct address_space_operations ram_aops = { + .readpage = simple_readpage, + .write_begin = simple_write_begin, + .write_end = simple_write_end, + .set_page_dirty = __set_page_dirty_no_writeback, +}; +EXPORT_SYMBOL(ram_aops); /* * the inodes created here are not hashed. If you use iunique to generate --- a/fs/ramfs/inode.c~fs-move-ramfs_aops-to-libfs +++ a/fs/ramfs/inode.c @@ -53,13 +53,6 @@ struct ramfs_fs_info { static const struct super_operations ramfs_ops; static const struct inode_operations ramfs_dir_inode_operations; -static const struct address_space_operations ramfs_aops = { - .readpage = simple_readpage, - .write_begin = simple_write_begin, - .write_end = simple_write_end, - .set_page_dirty = __set_page_dirty_no_writeback, -}; - struct inode *ramfs_get_inode(struct super_block *sb, const struct inode *dir, umode_t mode, dev_t dev) { @@ -68,7 +61,7 @@ struct inode *ramfs_get_inode(struct sup if (inode) { inode->i_ino = get_next_ino(); inode_init_owner(&init_user_ns, inode, dir, mode); - inode->i_mapping->a_ops = &ramfs_aops; + inode->i_mapping->a_ops = &ram_aops; mapping_set_gfp_mask(inode->i_mapping, GFP_HIGHUSER); mapping_set_unevictable(inode->i_mapping); inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); --- a/include/linux/fs.h~fs-move-ramfs_aops-to-libfs +++ a/include/linux/fs.h @@ -3422,13 +3422,10 @@ extern void noop_invalidatepage(struct p unsigned int length); extern ssize_t noop_direct_IO(struct kiocb *iocb, struct iov_iter *iter); extern int simple_empty(struct dentry *); -extern int simple_readpage(struct file *file, struct page *page); extern int simple_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata); -extern int simple_write_end(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata); +extern const struct address_space_operations ram_aops; extern int always_delete_dentry(const struct dentry *); extern struct inode *alloc_anon_inode(struct super_block *); extern int simple_nosetlease(struct file *, long, struct file_lock **, void **); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 056/192] mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 2:32 incoming Andrew Morton ` (54 preceding siblings ...) 2021-06-29 2:36 ` [patch 055/192] fs: move ramfs_aops to libfs Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 057/192] mm/writeback: move __set_page_dirty() to core mm Andrew Morton ` (135 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, code, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: Christoph Hellwig <hch@lst.de> Subject: mm: require ->set_page_dirty to be explicitly wired up Remove the CONFIG_BLOCK default to __set_page_dirty_buffers and just wire that method up for the missing instances. [hch@lst.de: ecryptfs: add a ->set_page_dirty cludge] Link: https://lkml.kernel.org/r/20210624125250.536369-1-hch@lst.de Link: https://lkml.kernel.org/r/20210614061512.3966143-4-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Tyler Hicks <code@tyhicks.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/adfs/inode.c | 1 + fs/affs/file.c | 2 ++ fs/bfs/file.c | 1 + fs/block_dev.c | 1 + fs/ecryptfs/mmap.c | 13 +++++++++++++ fs/exfat/inode.c | 1 + fs/ext2/inode.c | 2 ++ fs/fat/inode.c | 1 + fs/gfs2/meta_io.c | 2 ++ fs/hfs/inode.c | 2 ++ fs/hfsplus/inode.c | 2 ++ fs/hpfs/file.c | 1 + fs/jfs/inode.c | 1 + fs/minix/inode.c | 1 + fs/nilfs2/mdt.c | 1 + fs/ocfs2/aops.c | 1 + fs/omfs/file.c | 1 + fs/sysv/itree.c | 1 + fs/udf/file.c | 1 + fs/udf/inode.c | 1 + fs/ufs/inode.c | 1 + mm/page-writeback.c | 18 ++++-------------- 22 files changed, 42 insertions(+), 14 deletions(-) --- a/fs/adfs/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/adfs/inode.c @@ -73,6 +73,7 @@ static sector_t _adfs_bmap(struct addres } static const struct address_space_operations adfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = adfs_readpage, .writepage = adfs_writepage, .write_begin = adfs_write_begin, --- a/fs/affs/file.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/affs/file.c @@ -453,6 +453,7 @@ static sector_t _affs_bmap(struct addres } const struct address_space_operations affs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = affs_readpage, .writepage = affs_writepage, .write_begin = affs_write_begin, @@ -833,6 +834,7 @@ err_bh: } const struct address_space_operations affs_aops_ofs = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = affs_readpage_ofs, //.writepage = affs_writepage_ofs, .write_begin = affs_write_begin_ofs, --- a/fs/bfs/file.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/bfs/file.c @@ -188,6 +188,7 @@ static sector_t bfs_bmap(struct address_ } const struct address_space_operations bfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = bfs_readpage, .writepage = bfs_writepage, .write_begin = bfs_write_begin, --- a/fs/block_dev.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/block_dev.c @@ -1754,6 +1754,7 @@ static int blkdev_writepages(struct addr } static const struct address_space_operations def_blk_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = blkdev_readpage, .readahead = blkdev_readahead, .writepage = blkdev_writepage, --- a/fs/ecryptfs/mmap.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/ecryptfs/mmap.c @@ -533,7 +533,20 @@ static sector_t ecryptfs_bmap(struct add return block; } +#include <linux/buffer_head.h> + const struct address_space_operations ecryptfs_aops = { + /* + * XXX: This is pretty broken for multiple reasons: ecryptfs does not + * actually use buffer_heads, and ecryptfs will crash without + * CONFIG_BLOCK. But it matches the behavior before the default for + * address_space_operations without the ->set_page_dirty method was + * cleaned up, so this is the best we can do without maintainer + * feedback. + */ +#ifdef CONFIG_BLOCK + .set_page_dirty = __set_page_dirty_buffers, +#endif .writepage = ecryptfs_writepage, .readpage = ecryptfs_readpage, .write_begin = ecryptfs_write_begin, --- a/fs/exfat/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/exfat/inode.c @@ -491,6 +491,7 @@ int exfat_block_truncate_page(struct ino } static const struct address_space_operations exfat_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = exfat_readpage, .readahead = exfat_readahead, .writepage = exfat_writepage, --- a/fs/ext2/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/ext2/inode.c @@ -961,6 +961,7 @@ ext2_dax_writepages(struct address_space } const struct address_space_operations ext2_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = ext2_readpage, .readahead = ext2_readahead, .writepage = ext2_writepage, @@ -975,6 +976,7 @@ const struct address_space_operations ex }; const struct address_space_operations ext2_nobh_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = ext2_readpage, .readahead = ext2_readahead, .writepage = ext2_nobh_writepage, --- a/fs/fat/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/fat/inode.c @@ -342,6 +342,7 @@ int fat_block_truncate_page(struct inode } static const struct address_space_operations fat_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = fat_readpage, .readahead = fat_readahead, .writepage = fat_writepage, --- a/fs/gfs2/meta_io.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/gfs2/meta_io.c @@ -89,11 +89,13 @@ static int gfs2_aspace_writepage(struct } const struct address_space_operations gfs2_meta_aops = { + .set_page_dirty = __set_page_dirty_buffers, .writepage = gfs2_aspace_writepage, .releasepage = gfs2_releasepage, }; const struct address_space_operations gfs2_rgrp_aops = { + .set_page_dirty = __set_page_dirty_buffers, .writepage = gfs2_aspace_writepage, .releasepage = gfs2_releasepage, }; --- a/fs/hfs/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/hfs/inode.c @@ -159,6 +159,7 @@ static int hfs_writepages(struct address } const struct address_space_operations hfs_btree_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = hfs_readpage, .writepage = hfs_writepage, .write_begin = hfs_write_begin, @@ -168,6 +169,7 @@ const struct address_space_operations hf }; const struct address_space_operations hfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = hfs_readpage, .writepage = hfs_writepage, .write_begin = hfs_write_begin, --- a/fs/hfsplus/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/hfsplus/inode.c @@ -156,6 +156,7 @@ static int hfsplus_writepages(struct add } const struct address_space_operations hfsplus_btree_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = hfsplus_readpage, .writepage = hfsplus_writepage, .write_begin = hfsplus_write_begin, @@ -165,6 +166,7 @@ const struct address_space_operations hf }; const struct address_space_operations hfsplus_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = hfsplus_readpage, .writepage = hfsplus_writepage, .write_begin = hfsplus_write_begin, --- a/fs/hpfs/file.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/hpfs/file.c @@ -196,6 +196,7 @@ static int hpfs_fiemap(struct inode *ino } const struct address_space_operations hpfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = hpfs_readpage, .writepage = hpfs_writepage, .readahead = hpfs_readahead, --- a/fs/jfs/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/jfs/inode.c @@ -356,6 +356,7 @@ static ssize_t jfs_direct_IO(struct kioc } const struct address_space_operations jfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = jfs_readpage, .readahead = jfs_readahead, .writepage = jfs_writepage, --- a/fs/minix/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/minix/inode.c @@ -442,6 +442,7 @@ static sector_t minix_bmap(struct addres } static const struct address_space_operations minix_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = minix_readpage, .writepage = minix_writepage, .write_begin = minix_write_begin, --- a/fs/nilfs2/mdt.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/nilfs2/mdt.c @@ -434,6 +434,7 @@ nilfs_mdt_write_page(struct page *page, static const struct address_space_operations def_mdt_aops = { + .set_page_dirty = __set_page_dirty_buffers, .writepage = nilfs_mdt_write_page, }; --- a/fs/ocfs2/aops.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/ocfs2/aops.c @@ -2453,6 +2453,7 @@ static ssize_t ocfs2_direct_IO(struct ki } const struct address_space_operations ocfs2_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = ocfs2_readpage, .readahead = ocfs2_readahead, .writepage = ocfs2_writepage, --- a/fs/omfs/file.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/omfs/file.c @@ -372,6 +372,7 @@ const struct inode_operations omfs_file_ }; const struct address_space_operations omfs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = omfs_readpage, .readahead = omfs_readahead, .writepage = omfs_writepage, --- a/fs/sysv/itree.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/sysv/itree.c @@ -495,6 +495,7 @@ static sector_t sysv_bmap(struct address } const struct address_space_operations sysv_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = sysv_readpage, .writepage = sysv_writepage, .write_begin = sysv_write_begin, --- a/fs/udf/file.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/udf/file.c @@ -125,6 +125,7 @@ static int udf_adinicb_write_end(struct } const struct address_space_operations udf_adinicb_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = udf_adinicb_readpage, .writepage = udf_adinicb_writepage, .write_begin = udf_adinicb_write_begin, --- a/fs/udf/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/udf/inode.c @@ -235,6 +235,7 @@ static sector_t udf_bmap(struct address_ } const struct address_space_operations udf_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = udf_readpage, .readahead = udf_readahead, .writepage = udf_writepage, --- a/fs/ufs/inode.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/fs/ufs/inode.c @@ -526,6 +526,7 @@ static sector_t ufs_bmap(struct address_ } const struct address_space_operations ufs_aops = { + .set_page_dirty = __set_page_dirty_buffers, .readpage = ufs_readpage, .writepage = ufs_writepage, .write_begin = ufs_write_begin, --- a/mm/page-writeback.c~mm-require-set_page_dirty-to-be-explicitly-wire-up +++ a/mm/page-writeback.c @@ -32,7 +32,6 @@ #include <linux/sysctl.h> #include <linux/cpu.h> #include <linux/syscalls.h> -#include <linux/buffer_head.h> /* __set_page_dirty_buffers */ #include <linux/pagevec.h> #include <linux/timer.h> #include <linux/sched/rt.h> @@ -2555,13 +2554,9 @@ EXPORT_SYMBOL(redirty_page_for_writepage /* * Dirty a page. * - * For pages with a mapping this should be done under the page lock - * for the benefit of asynchronous memory errors who prefer a consistent - * dirty state. This rule can be broken in some special cases, - * but should be better not to. - * - * If the mapping doesn't provide a set_page_dirty a_op, then - * just fall through and assume that it wants buffer_heads. + * For pages with a mapping this should be done under the page lock for the + * benefit of asynchronous memory errors who prefer a consistent dirty state. + * This rule can be broken in some special cases, but should be better not to. */ int set_page_dirty(struct page *page) { @@ -2569,7 +2564,6 @@ int set_page_dirty(struct page *page) page = compound_head(page); if (likely(mapping)) { - int (*spd)(struct page *) = mapping->a_ops->set_page_dirty; /* * readahead/lru_deactivate_page could remain * PG_readahead/PG_reclaim due to race with end_page_writeback @@ -2582,11 +2576,7 @@ int set_page_dirty(struct page *page) */ if (PageReclaim(page)) ClearPageReclaim(page); -#ifdef CONFIG_BLOCK - if (!spd) - spd = __set_page_dirty_buffers; -#endif - return (*spd)(page); + return mapping->a_ops->set_page_dirty(page); } if (!PageDirty(page)) { if (!TestSetPageDirty(page)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 057/192] mm/writeback: move __set_page_dirty() to core mm 2021-06-29 2:32 incoming Andrew Morton ` (55 preceding siblings ...) 2021-06-29 2:36 ` [patch 056/192] mm: require ->set_page_dirty to be explicitly wired up Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 058/192] mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers Andrew Morton ` (134 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm/writeback: move __set_page_dirty() to core mm Patch series "Further set_page_dirty cleanups". Prompted by Christoph's recent patches, here are some more patches to improve the state of set_page_dirty(). They're all from the folio tree, so they've been tested to a certain extent. This patch (of 6): Nothing in __set_page_dirty() is specific to buffer_head, so move it to mm/page-writeback.c. That removes the only caller of account_page_dirtied() outside of page-writeback.c, so make it static. Link: https://lkml.kernel.org/r/20210615162342.1669332-1-willy@infradead.org Link: https://lkml.kernel.org/r/20210615162342.1669332-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/buffer.c | 24 ------------------------ include/linux/mm.h | 1 - mm/page-writeback.c | 27 ++++++++++++++++++++++++++- 3 files changed, 26 insertions(+), 26 deletions(-) --- a/fs/buffer.c~mm-writeback-move-__set_page_dirty-to-core-mm +++ a/fs/buffer.c @@ -589,30 +589,6 @@ void mark_buffer_dirty_inode(struct buff EXPORT_SYMBOL(mark_buffer_dirty_inode); /* - * Mark the page dirty, and set it dirty in the page cache, and mark the inode - * dirty. - * - * If warn is true, then emit a warning if the page is not uptodate and has - * not been truncated. - * - * The caller must hold lock_page_memcg(). - */ -void __set_page_dirty(struct page *page, struct address_space *mapping, - int warn) -{ - unsigned long flags; - - xa_lock_irqsave(&mapping->i_pages, flags); - if (page->mapping) { /* Race with truncate? */ - WARN_ON_ONCE(warn && !PageUptodate(page)); - account_page_dirtied(page, mapping); - __xa_set_mark(&mapping->i_pages, page_index(page), - PAGECACHE_TAG_DIRTY); - } - xa_unlock_irqrestore(&mapping->i_pages, flags); -} - -/* * Add a page to the dirty page list. * * It is a sad fact of life that this function is called from several places --- a/include/linux/mm.h~mm-writeback-move-__set_page_dirty-to-core-mm +++ a/include/linux/mm.h @@ -1855,7 +1855,6 @@ int __set_page_dirty_nobuffers(struct pa int __set_page_dirty_no_writeback(struct page *page); int redirty_page_for_writepage(struct writeback_control *wbc, struct page *page); -void account_page_dirtied(struct page *page, struct address_space *mapping); void account_page_cleaned(struct page *page, struct address_space *mapping, struct bdi_writeback *wb); int set_page_dirty(struct page *page); --- a/mm/page-writeback.c~mm-writeback-move-__set_page_dirty-to-core-mm +++ a/mm/page-writeback.c @@ -2425,7 +2425,8 @@ int __set_page_dirty_no_writeback(struct * * NOTE: This relies on being atomic wrt interrupts. */ -void account_page_dirtied(struct page *page, struct address_space *mapping) +static void account_page_dirtied(struct page *page, + struct address_space *mapping) { struct inode *inode = mapping->host; @@ -2467,6 +2468,30 @@ void account_page_cleaned(struct page *p } /* + * Mark the page dirty, and set it dirty in the page cache, and mark the inode + * dirty. + * + * If warn is true, then emit a warning if the page is not uptodate and has + * not been truncated. + * + * The caller must hold lock_page_memcg(). + */ +void __set_page_dirty(struct page *page, struct address_space *mapping, + int warn) +{ + unsigned long flags; + + xa_lock_irqsave(&mapping->i_pages, flags); + if (page->mapping) { /* Race with truncate? */ + WARN_ON_ONCE(warn && !PageUptodate(page)); + account_page_dirtied(page, mapping); + __xa_set_mark(&mapping->i_pages, page_index(page), + PAGECACHE_TAG_DIRTY); + } + xa_unlock_irqrestore(&mapping->i_pages, flags); +} + +/* * For address_spaces which do not use buffers. Just tag the page as dirty in * the xarray. * _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 058/192] mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers 2021-06-29 2:32 incoming Andrew Morton ` (56 preceding siblings ...) 2021-06-29 2:36 ` [patch 057/192] mm/writeback: move __set_page_dirty() to core mm Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 059/192] iomap: use __set_page_dirty_nobuffers Andrew Morton ` (133 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers This is fundamentally the same code, so just call it instead of duplicating it. Link: https://lkml.kernel.org/r/20210615162342.1669332-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page-writeback.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) --- a/mm/page-writeback.c~mm-writeback-use-__set_page_dirty-in-__set_page_dirty_nobuffers +++ a/mm/page-writeback.c @@ -2508,20 +2508,12 @@ int __set_page_dirty_nobuffers(struct pa lock_page_memcg(page); if (!TestSetPageDirty(page)) { struct address_space *mapping = page_mapping(page); - unsigned long flags; if (!mapping) { unlock_page_memcg(page); return 1; } - - xa_lock_irqsave(&mapping->i_pages, flags); - BUG_ON(page_mapping(page) != mapping); - WARN_ON_ONCE(!PagePrivate(page) && !PageUptodate(page)); - account_page_dirtied(page, mapping); - __xa_set_mark(&mapping->i_pages, page_index(page), - PAGECACHE_TAG_DIRTY); - xa_unlock_irqrestore(&mapping->i_pages, flags); + __set_page_dirty(page, mapping, !PagePrivate(page)); unlock_page_memcg(page); if (mapping->host) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 059/192] iomap: use __set_page_dirty_nobuffers 2021-06-29 2:32 incoming Andrew Morton ` (57 preceding siblings ...) 2021-06-29 2:36 ` [patch 058/192] mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 060/192] fs: remove anon_set_page_dirty() Andrew Morton ` (132 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: iomap: use __set_page_dirty_nobuffers The only difference between iomap_set_page_dirty() and __set_page_dirty_nobuffers() is that the latter includes a debugging check that a !Uptodate page has private data. Link: https://lkml.kernel.org/r/20210615162342.1669332-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/gfs2/aops.c | 2 +- fs/iomap/buffered-io.c | 27 +-------------------------- fs/xfs/xfs_aops.c | 2 +- fs/zonefs/super.c | 2 +- include/linux/iomap.h | 1 - 5 files changed, 4 insertions(+), 30 deletions(-) --- a/fs/gfs2/aops.c~iomap-use-__set_page_dirty_nobuffers +++ a/fs/gfs2/aops.c @@ -784,7 +784,7 @@ static const struct address_space_operat .writepages = gfs2_writepages, .readpage = gfs2_readpage, .readahead = gfs2_readahead, - .set_page_dirty = iomap_set_page_dirty, + .set_page_dirty = __set_page_dirty_nobuffers, .releasepage = iomap_releasepage, .invalidatepage = iomap_invalidatepage, .bmap = gfs2_bmap, --- a/fs/iomap/buffered-io.c~iomap-use-__set_page_dirty_nobuffers +++ a/fs/iomap/buffered-io.c @@ -640,31 +640,6 @@ out_no_page: return status; } -int -iomap_set_page_dirty(struct page *page) -{ - struct address_space *mapping = page_mapping(page); - int newly_dirty; - - if (unlikely(!mapping)) - return !TestSetPageDirty(page); - - /* - * Lock out page's memcg migration to keep PageDirty - * synchronized with per-memcg dirty page counters. - */ - lock_page_memcg(page); - newly_dirty = !TestSetPageDirty(page); - if (newly_dirty) - __set_page_dirty(page, mapping, 0); - unlock_page_memcg(page); - - if (newly_dirty) - __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); - return newly_dirty; -} -EXPORT_SYMBOL_GPL(iomap_set_page_dirty); - static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len, size_t copied, struct page *page) { @@ -684,7 +659,7 @@ static size_t __iomap_write_end(struct i if (unlikely(copied < len && !PageUptodate(page))) return 0; iomap_set_range_uptodate(page, offset_in_page(pos), len); - iomap_set_page_dirty(page); + __set_page_dirty_nobuffers(page); return copied; } --- a/fs/xfs/xfs_aops.c~iomap-use-__set_page_dirty_nobuffers +++ a/fs/xfs/xfs_aops.c @@ -561,7 +561,7 @@ const struct address_space_operations xf .readahead = xfs_vm_readahead, .writepage = xfs_vm_writepage, .writepages = xfs_vm_writepages, - .set_page_dirty = iomap_set_page_dirty, + .set_page_dirty = __set_page_dirty_nobuffers, .releasepage = iomap_releasepage, .invalidatepage = iomap_invalidatepage, .bmap = xfs_vm_bmap, --- a/fs/zonefs/super.c~iomap-use-__set_page_dirty_nobuffers +++ a/fs/zonefs/super.c @@ -185,7 +185,7 @@ static const struct address_space_operat .readahead = zonefs_readahead, .writepage = zonefs_writepage, .writepages = zonefs_writepages, - .set_page_dirty = iomap_set_page_dirty, + .set_page_dirty = __set_page_dirty_nobuffers, .releasepage = iomap_releasepage, .invalidatepage = iomap_invalidatepage, .migratepage = iomap_migrate_page, --- a/include/linux/iomap.h~iomap-use-__set_page_dirty_nobuffers +++ a/include/linux/iomap.h @@ -159,7 +159,6 @@ ssize_t iomap_file_buffered_write(struct const struct iomap_ops *ops); int iomap_readpage(struct page *page, const struct iomap_ops *ops); void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops); -int iomap_set_page_dirty(struct page *page); int iomap_is_partially_uptodate(struct page *page, unsigned long from, unsigned long count); int iomap_releasepage(struct page *page, gfp_t gfp_mask); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 060/192] fs: remove anon_set_page_dirty() 2021-06-29 2:32 incoming Andrew Morton ` (58 preceding siblings ...) 2021-06-29 2:36 ` [patch 059/192] iomap: use __set_page_dirty_nobuffers Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 061/192] fs: remove noop_set_page_dirty() Andrew Morton ` (131 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: fs: remove anon_set_page_dirty() Use __set_page_dirty_no_writeback() instead. This will set the dirty bit on the page, which will be used to avoid calling set_page_dirty() in the future. It will have no effect on actually writing the page back, as the pages are not on any LRU lists. Link: https://lkml.kernel.org/r/20210615162342.1669332-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/libfs.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) --- a/fs/libfs.c~fs-remove-anon_set_page_dirty +++ a/fs/libfs.c @@ -1217,19 +1217,10 @@ void kfree_link(void *p) } EXPORT_SYMBOL(kfree_link); -/* - * nop .set_page_dirty method so that people can use .page_mkwrite on - * anon inodes. - */ -static int anon_set_page_dirty(struct page *page) -{ - return 0; -}; - struct inode *alloc_anon_inode(struct super_block *s) { static const struct address_space_operations anon_aops = { - .set_page_dirty = anon_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, }; struct inode *inode = new_inode_pseudo(s); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 061/192] fs: remove noop_set_page_dirty() 2021-06-29 2:32 incoming Andrew Morton ` (59 preceding siblings ...) 2021-06-29 2:36 ` [patch 060/192] fs: remove anon_set_page_dirty() Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 062/192] mm: move page dirtying prototypes from mm.h Andrew Morton ` (130 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: fs: remove noop_set_page_dirty() Use __set_page_dirty_no_writeback() instead. This will set the dirty bit on the page, which will be used to avoid calling set_page_dirty() in the future. It will have no effect on actually writing the page back, as the pages are not on any LRU lists. [akpm@linux-foundation.org: export __set_page_dirty_no_writeback() to modules] Link: https://lkml.kernel.org/r/20210615162342.1669332-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/dax/device.c | 2 +- fs/ext2/inode.c | 2 +- fs/ext4/inode.c | 2 +- fs/fuse/dax.c | 2 +- fs/libfs.c | 16 ---------------- fs/xfs/xfs_aops.c | 2 +- include/linux/fs.h | 1 - mm/page-writeback.c | 1 + 8 files changed, 6 insertions(+), 22 deletions(-) --- a/drivers/dax/device.c~fs-remove-noop_set_page_dirty +++ a/drivers/dax/device.c @@ -337,7 +337,7 @@ static unsigned long dax_get_unmapped_ar } static const struct address_space_operations dev_dax_aops = { - .set_page_dirty = noop_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, .invalidatepage = noop_invalidatepage, }; --- a/fs/ext2/inode.c~fs-remove-noop_set_page_dirty +++ a/fs/ext2/inode.c @@ -992,7 +992,7 @@ const struct address_space_operations ex static const struct address_space_operations ext2_dax_aops = { .writepages = ext2_dax_writepages, .direct_IO = noop_direct_IO, - .set_page_dirty = noop_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, .invalidatepage = noop_invalidatepage, }; --- a/fs/ext4/inode.c~fs-remove-noop_set_page_dirty +++ a/fs/ext4/inode.c @@ -3701,7 +3701,7 @@ static const struct address_space_operat static const struct address_space_operations ext4_dax_aops = { .writepages = ext4_dax_writepages, .direct_IO = noop_direct_IO, - .set_page_dirty = noop_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, .bmap = ext4_bmap, .invalidatepage = noop_invalidatepage, .swap_activate = ext4_iomap_swap_activate, --- a/fs/fuse/dax.c~fs-remove-noop_set_page_dirty +++ a/fs/fuse/dax.c @@ -1329,7 +1329,7 @@ bool fuse_dax_inode_alloc(struct super_b static const struct address_space_operations fuse_dax_file_aops = { .writepages = fuse_dax_writepages, .direct_IO = noop_direct_IO, - .set_page_dirty = noop_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, .invalidatepage = noop_invalidatepage, }; --- a/fs/libfs.c~fs-remove-noop_set_page_dirty +++ a/fs/libfs.c @@ -1171,22 +1171,6 @@ int noop_fsync(struct file *file, loff_t } EXPORT_SYMBOL(noop_fsync); -int noop_set_page_dirty(struct page *page) -{ - /* - * Unlike __set_page_dirty_no_writeback that handles dirty page - * tracking in the page object, dax does all dirty tracking in - * the inode address_space in response to mkwrite faults. In the - * dax case we only need to worry about potentially dirty CPU - * caches, not dirty page cache pages to write back. - * - * This callback is defined to prevent fallback to - * __set_page_dirty_buffers() in set_page_dirty(). - */ - return 0; -} -EXPORT_SYMBOL_GPL(noop_set_page_dirty); - void noop_invalidatepage(struct page *page, unsigned int offset, unsigned int length) { --- a/fs/xfs/xfs_aops.c~fs-remove-noop_set_page_dirty +++ a/fs/xfs/xfs_aops.c @@ -575,7 +575,7 @@ const struct address_space_operations xf const struct address_space_operations xfs_dax_aops = { .writepages = xfs_dax_writepages, .direct_IO = noop_direct_IO, - .set_page_dirty = noop_set_page_dirty, + .set_page_dirty = __set_page_dirty_no_writeback, .invalidatepage = noop_invalidatepage, .swap_activate = xfs_iomap_swapfile_activate, }; --- a/include/linux/fs.h~fs-remove-noop_set_page_dirty +++ a/include/linux/fs.h @@ -3417,7 +3417,6 @@ extern int simple_rename(struct user_nam extern void simple_recursive_removal(struct dentry *, void (*callback)(struct dentry *)); extern int noop_fsync(struct file *, loff_t, loff_t, int); -extern int noop_set_page_dirty(struct page *page); extern void noop_invalidatepage(struct page *page, unsigned int offset, unsigned int length); extern ssize_t noop_direct_IO(struct kiocb *iocb, struct iov_iter *iter); --- a/mm/page-writeback.c~fs-remove-noop_set_page_dirty +++ a/mm/page-writeback.c @@ -2417,6 +2417,7 @@ int __set_page_dirty_no_writeback(struct return !TestSetPageDirty(page); return 0; } +EXPORT_SYMBOL(__set_page_dirty_no_writeback); /* * Helper function for set_page_dirty family. _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 062/192] mm: move page dirtying prototypes from mm.h 2021-06-29 2:32 incoming Andrew Morton ` (60 preceding siblings ...) 2021-06-29 2:36 ` [patch 061/192] fs: remove noop_set_page_dirty() Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 063/192] mm/gup_benchmark: support threading Andrew Morton ` (129 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, dan.j.williams, gregkh, hch, jack, linux-mm, mm-commits, torvalds, viro, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: move page dirtying prototypes from mm.h These functions implement the address_space ->set_page_dirty operation and should live in pagemap.h, not mm.h so that the rest of the kernel doesn't get funny ideas about calling them directly. Link: https://lkml.kernel.org/r/20210615162342.1669332-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/fuse/dax.c | 1 + fs/zonefs/super.c | 2 +- include/linux/mm.h | 3 --- include/linux/pagemap.h | 4 ++++ 4 files changed, 6 insertions(+), 4 deletions(-) --- a/fs/fuse/dax.c~mm-move-page-dirtying-prototypes-from-mmh +++ a/fs/fuse/dax.c @@ -9,6 +9,7 @@ #include <linux/delay.h> #include <linux/dax.h> #include <linux/uio.h> +#include <linux/pagemap.h> #include <linux/pfn_t.h> #include <linux/iomap.h> #include <linux/interval_tree.h> --- a/fs/zonefs/super.c~mm-move-page-dirtying-prototypes-from-mmh +++ a/fs/zonefs/super.c @@ -5,7 +5,7 @@ * Copyright (C) 2019 Western Digital Corporation or its affiliates. */ #include <linux/module.h> -#include <linux/fs.h> +#include <linux/pagemap.h> #include <linux/magic.h> #include <linux/iomap.h> #include <linux/init.h> --- a/include/linux/mm.h~mm-move-page-dirtying-prototypes-from-mmh +++ a/include/linux/mm.h @@ -1850,9 +1850,6 @@ extern int try_to_release_page(struct pa extern void do_invalidatepage(struct page *page, unsigned int offset, unsigned int length); -void __set_page_dirty(struct page *, struct address_space *, int warn); -int __set_page_dirty_nobuffers(struct page *page); -int __set_page_dirty_no_writeback(struct page *page); int redirty_page_for_writepage(struct writeback_control *wbc, struct page *page); void account_page_cleaned(struct page *page, struct address_space *mapping, --- a/include/linux/pagemap.h~mm-move-page-dirtying-prototypes-from-mmh +++ a/include/linux/pagemap.h @@ -702,6 +702,10 @@ int wait_on_page_writeback_killable(stru extern void end_page_writeback(struct page *page); void wait_for_stable_page(struct page *page); +void __set_page_dirty(struct page *, struct address_space *, int warn); +int __set_page_dirty_nobuffers(struct page *page); +int __set_page_dirty_no_writeback(struct page *page); + void page_endio(struct page *page, bool is_write, int err); /** _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 063/192] mm/gup_benchmark: support threading 2021-06-29 2:32 incoming Andrew Morton ` (61 preceding siblings ...) 2021-06-29 2:36 ` [patch 062/192] mm: move page dirtying prototypes from mm.h Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 064/192] mm: gup: allow FOLL_PIN to scale in SMP Andrew Morton ` (128 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: aarcange, akpm, hughd, jack, jannh, jgg, jhubbard, kirill, ktkhai, linux-mm, mhocko, mm-commits, oleg, peterx, torvalds, willy From: Peter Xu <peterx@redhat.com> Subject: mm/gup_benchmark: support threading Patch series "mm/gup: Fix pin page write cache bouncing on has_pinned", v2. This series contains 3 patches, the 1st one enables threading for gup_benchmark in the kselftest. The latter two patches are collected from Andrea's local branch which can fix write cache bouncing issue with pinning fast-gup. To be explicit on the latter two patches: - the 2nd patch fixes the perf degrade when introducing has_pinned, then - the last patch tries to remove the has_pinned with a bit in mm->flags For patch 3: originally I think we had a plan to reuse has_pinned into a counter very soon, however that's not happening at least until today, so maybe it proves that we can remove it until we really want such a counter for whatever reason. As the commit message stated, it saves 4 bytes for each mm without observable regressions. Regarding testing: we can reference to the commit message of patch 2 for some detailed testing with will-is-scale. Meanwhile I did patch 1 just because then we can even easily verify the patchset using the existing kselftest facilities or even regress test it in the future with the repo if we want. Below numbers are extra verification tests that I did besides commit message of patch 2 using the new gup_benchmark and 256 cpus. Below test is done on 40 cpus host with Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz, and I can get similar result (of course the write cache bouncing get severe with even more cores). After patch 1 applied (only test patch, so using old kernel): $ sudo chrt -f 1 ./gup_test -a -m 512 -j 40 PIN_FAST_BENCHMARK: Time: get:459632 put:5990 us PIN_FAST_BENCHMARK: Time: get:461967 put:5840 us PIN_FAST_BENCHMARK: Time: get:464521 put:6140 us PIN_FAST_BENCHMARK: Time: get:465176 put:7100 us PIN_FAST_BENCHMARK: Time: get:465960 put:6733 us PIN_FAST_BENCHMARK: Time: get:465324 put:6781 us PIN_FAST_BENCHMARK: Time: get:466018 put:7130 us PIN_FAST_BENCHMARK: Time: get:466362 put:7118 us PIN_FAST_BENCHMARK: Time: get:465118 put:6975 us PIN_FAST_BENCHMARK: Time: get:466422 put:6602 us PIN_FAST_BENCHMARK: Time: get:465791 put:6818 us PIN_FAST_BENCHMARK: Time: get:467091 put:6298 us PIN_FAST_BENCHMARK: Time: get:467694 put:5432 us PIN_FAST_BENCHMARK: Time: get:469575 put:5581 us PIN_FAST_BENCHMARK: Time: get:468124 put:6055 us PIN_FAST_BENCHMARK: Time: get:468877 put:6720 us PIN_FAST_BENCHMARK: Time: get:467212 put:4961 us PIN_FAST_BENCHMARK: Time: get:467834 put:6697 us PIN_FAST_BENCHMARK: Time: get:470778 put:6398 us PIN_FAST_BENCHMARK: Time: get:469788 put:6310 us PIN_FAST_BENCHMARK: Time: get:488277 put:7113 us PIN_FAST_BENCHMARK: Time: get:486613 put:7085 us PIN_FAST_BENCHMARK: Time: get:486940 put:7202 us PIN_FAST_BENCHMARK: Time: get:488728 put:7101 us PIN_FAST_BENCHMARK: Time: get:487570 put:7327 us PIN_FAST_BENCHMARK: Time: get:489260 put:7027 us PIN_FAST_BENCHMARK: Time: get:488846 put:6866 us PIN_FAST_BENCHMARK: Time: get:488521 put:6745 us PIN_FAST_BENCHMARK: Time: get:489950 put:6459 us PIN_FAST_BENCHMARK: Time: get:489777 put:6617 us PIN_FAST_BENCHMARK: Time: get:488224 put:6591 us PIN_FAST_BENCHMARK: Time: get:488644 put:6477 us PIN_FAST_BENCHMARK: Time: get:488754 put:6711 us PIN_FAST_BENCHMARK: Time: get:488875 put:6743 us PIN_FAST_BENCHMARK: Time: get:489290 put:6657 us PIN_FAST_BENCHMARK: Time: get:490264 put:6684 us PIN_FAST_BENCHMARK: Time: get:489631 put:6737 us PIN_FAST_BENCHMARK: Time: get:488434 put:6655 us PIN_FAST_BENCHMARK: Time: get:492213 put:6297 us PIN_FAST_BENCHMARK: Time: get:491124 put:6173 us After the whole series applied (new fixed kernel): $ sudo chrt -f 1 ./gup_test -a -m 512 -j 40 PIN_FAST_BENCHMARK: Time: get:82038 put:7041 us PIN_FAST_BENCHMARK: Time: get:82144 put:6817 us PIN_FAST_BENCHMARK: Time: get:83417 put:6674 us PIN_FAST_BENCHMARK: Time: get:82540 put:6594 us PIN_FAST_BENCHMARK: Time: get:83214 put:6681 us PIN_FAST_BENCHMARK: Time: get:83444 put:6889 us PIN_FAST_BENCHMARK: Time: get:83194 put:7499 us PIN_FAST_BENCHMARK: Time: get:84876 put:7369 us PIN_FAST_BENCHMARK: Time: get:86092 put:10289 us PIN_FAST_BENCHMARK: Time: get:86153 put:10415 us PIN_FAST_BENCHMARK: Time: get:85026 put:7751 us PIN_FAST_BENCHMARK: Time: get:85458 put:7944 us PIN_FAST_BENCHMARK: Time: get:85735 put:8154 us PIN_FAST_BENCHMARK: Time: get:85851 put:8299 us PIN_FAST_BENCHMARK: Time: get:86323 put:9617 us PIN_FAST_BENCHMARK: Time: get:86288 put:10496 us PIN_FAST_BENCHMARK: Time: get:87697 put:9346 us PIN_FAST_BENCHMARK: Time: get:87980 put:8382 us PIN_FAST_BENCHMARK: Time: get:88719 put:8400 us PIN_FAST_BENCHMARK: Time: get:87616 put:8588 us PIN_FAST_BENCHMARK: Time: get:86730 put:9563 us PIN_FAST_BENCHMARK: Time: get:88167 put:8673 us PIN_FAST_BENCHMARK: Time: get:86844 put:9777 us PIN_FAST_BENCHMARK: Time: get:88068 put:11774 us PIN_FAST_BENCHMARK: Time: get:86170 put:15676 us PIN_FAST_BENCHMARK: Time: get:87967 put:12827 us PIN_FAST_BENCHMARK: Time: get:95773 put:7652 us PIN_FAST_BENCHMARK: Time: get:87734 put:13650 us PIN_FAST_BENCHMARK: Time: get:89833 put:14237 us PIN_FAST_BENCHMARK: Time: get:96186 put:8029 us PIN_FAST_BENCHMARK: Time: get:95532 put:8886 us PIN_FAST_BENCHMARK: Time: get:95351 put:5826 us PIN_FAST_BENCHMARK: Time: get:96401 put:8407 us PIN_FAST_BENCHMARK: Time: get:96473 put:8287 us PIN_FAST_BENCHMARK: Time: get:97177 put:8430 us PIN_FAST_BENCHMARK: Time: get:98120 put:5263 us PIN_FAST_BENCHMARK: Time: get:96271 put:7757 us PIN_FAST_BENCHMARK: Time: get:99628 put:10467 us PIN_FAST_BENCHMARK: Time: get:99344 put:10045 us PIN_FAST_BENCHMARK: Time: get:94212 put:15485 us Summary: Old kernel: 477729.97 (+-3.79%) New kernel: 89144.65 (+-11.76%) This patch (of 3): Add a new parameter "-j N" to support concurrent gup test. Link: https://lkml.kernel.org/r/20210507150553.208763-1-peterx@redhat.com Link: https://lkml.kernel.org/r/20210507150553.208763-2-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Jan Kara <jack@suse.cz> Cc: Michal Hocko <mhocko@suse.com> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Kirill Shutemov <kirill@shutemov.name> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- tools/testing/selftests/vm/gup_test.c | 96 ++++++++++++++++-------- 1 file changed, 65 insertions(+), 31 deletions(-) --- a/tools/testing/selftests/vm/gup_test.c~mm-gup_benchmark-support-threading +++ a/tools/testing/selftests/vm/gup_test.c @@ -6,6 +6,8 @@ #include <sys/mman.h> #include <sys/stat.h> #include <sys/types.h> +#include <pthread.h> +#include <assert.h> #include "../../../../mm/gup_test.h" #define MB (1UL << 20) @@ -15,6 +17,12 @@ #define FOLL_WRITE 0x01 /* check pte is writable */ #define FOLL_TOUCH 0x02 /* mark page accessed */ +static unsigned long cmd = GUP_FAST_BENCHMARK; +static int gup_fd, repeats = 1; +static unsigned long size = 128 * MB; +/* Serialize prints */ +static pthread_mutex_t print_mutex = PTHREAD_MUTEX_INITIALIZER; + static char *cmd_to_str(unsigned long cmd) { switch (cmd) { @@ -34,17 +42,55 @@ static char *cmd_to_str(unsigned long cm return "Unknown command"; } +void *gup_thread(void *data) +{ + struct gup_test gup = *(struct gup_test *)data; + int i; + + /* Only report timing information on the *_BENCHMARK commands: */ + if ((cmd == PIN_FAST_BENCHMARK) || (cmd == GUP_FAST_BENCHMARK) || + (cmd == PIN_LONGTERM_BENCHMARK)) { + for (i = 0; i < repeats; i++) { + gup.size = size; + if (ioctl(gup_fd, cmd, &gup)) + perror("ioctl"), exit(1); + + pthread_mutex_lock(&print_mutex); + printf("%s: Time: get:%lld put:%lld us", + cmd_to_str(cmd), gup.get_delta_usec, + gup.put_delta_usec); + if (gup.size != size) + printf(", truncated (size: %lld)", gup.size); + printf("\n"); + pthread_mutex_unlock(&print_mutex); + } + } else { + gup.size = size; + if (ioctl(gup_fd, cmd, &gup)) { + perror("ioctl"); + exit(1); + } + + pthread_mutex_lock(&print_mutex); + printf("%s: done\n", cmd_to_str(cmd)); + if (gup.size != size) + printf("Truncated (size: %lld)\n", gup.size); + pthread_mutex_unlock(&print_mutex); + } + + return NULL; +} + int main(int argc, char **argv) { struct gup_test gup = { 0 }; - unsigned long size = 128 * MB; - int i, fd, filed, opt, nr_pages = 1, thp = -1, repeats = 1, write = 1; - unsigned long cmd = GUP_FAST_BENCHMARK; + int filed, i, opt, nr_pages = 1, thp = -1, write = 1, nthreads = 1, ret; int flags = MAP_PRIVATE, touch = 0; char *file = "/dev/zero"; + pthread_t *tid; char *p; - while ((opt = getopt(argc, argv, "m:r:n:F:f:abctTLUuwWSHpz")) != -1) { + while ((opt = getopt(argc, argv, "m:r:n:F:f:abcj:tTLUuwWSHpz")) != -1) { switch (opt) { case 'a': cmd = PIN_FAST_BENCHMARK; @@ -74,6 +120,9 @@ int main(int argc, char **argv) /* strtol, so you can pass flags in hex form */ gup.gup_flags = strtol(optarg, 0, 0); break; + case 'j': + nthreads = atoi(optarg); + break; case 'm': size = atoi(optarg) * MB; break; @@ -154,8 +203,8 @@ int main(int argc, char **argv) if (write) gup.gup_flags |= FOLL_WRITE; - fd = open("/sys/kernel/debug/gup_test", O_RDWR); - if (fd == -1) { + gup_fd = open("/sys/kernel/debug/gup_test", O_RDWR); + if (gup_fd == -1) { perror("open"); exit(1); } @@ -185,32 +234,17 @@ int main(int argc, char **argv) p[0] = 0; } - /* Only report timing information on the *_BENCHMARK commands: */ - if ((cmd == PIN_FAST_BENCHMARK) || (cmd == GUP_FAST_BENCHMARK) || - (cmd == PIN_LONGTERM_BENCHMARK)) { - for (i = 0; i < repeats; i++) { - gup.size = size; - if (ioctl(fd, cmd, &gup)) - perror("ioctl"), exit(1); - - printf("%s: Time: get:%lld put:%lld us", - cmd_to_str(cmd), gup.get_delta_usec, - gup.put_delta_usec); - if (gup.size != size) - printf(", truncated (size: %lld)", gup.size); - printf("\n"); - } - } else { - gup.size = size; - if (ioctl(fd, cmd, &gup)) { - perror("ioctl"); - exit(1); - } - - printf("%s: done\n", cmd_to_str(cmd)); - if (gup.size != size) - printf("Truncated (size: %lld)\n", gup.size); + tid = malloc(sizeof(pthread_t) * nthreads); + assert(tid); + for (i = 0; i < nthreads; i++) { + ret = pthread_create(&tid[i], NULL, gup_thread, &gup); + assert(ret == 0); + } + for (i = 0; i < nthreads; i++) { + ret = pthread_join(tid[i], NULL); + assert(ret == 0); } + free(tid); return 0; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 064/192] mm: gup: allow FOLL_PIN to scale in SMP 2021-06-29 2:32 incoming Andrew Morton ` (62 preceding siblings ...) 2021-06-29 2:36 ` [patch 063/192] mm/gup_benchmark: support threading Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 065/192] mm: gup: pack has_pinned in MMF_HAS_PINNED Andrew Morton ` (127 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: aarcange, akpm, hughd, jack, jannh, jgg, jhubbard, kirill, ktkhai, linux-mm, mhocko, mm-commits, oleg, peterx, torvalds, willy From: Andrea Arcangeli <aarcange@redhat.com> Subject: mm: gup: allow FOLL_PIN to scale in SMP has_pinned cannot be written by each pin-fast or it won't scale in SMP. This isn't "false sharing" strictly speaking (it's more like "true non-sharing"), but it creates the same SMP scalability bottleneck of "false sharing". To verify the improvement, below test is done on 40 cpus host with Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz (must be with CONFIG_GUP_TEST=y): $ sudo chrt -f 1 ./gup_test -a -m 512 -j 40 Where we can get (average value for 40 threads): Old kernel: 477729.97 (+- 3.79%) New kernel: 89144.65 (+-11.76%) On a similar condition with 256 cpus, this commits increases the SMP scalability of pin_user_pages_fast() executed by different threads of the same process by more than 4000%. [peterx@redhat.com: rewrite commit message, add parentheses against "(A & B)"] Link: https://lkml.kernel.org/r/20210507150553.208763-3-peterx@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Kirill Shutemov <kirill@shutemov.name> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/gup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/gup.c~mm-gup-allow-foll_pin-to-scale-in-smp +++ a/mm/gup.c @@ -1320,7 +1320,7 @@ static __always_inline long __get_user_p BUG_ON(*locked != 1); } - if (flags & FOLL_PIN) + if ((flags & FOLL_PIN) && !atomic_read(&mm->has_pinned)) atomic_set(&mm->has_pinned, 1); /* @@ -2641,7 +2641,7 @@ static int internal_get_user_pages_fast( FOLL_FAST_ONLY))) return -EINVAL; - if (gup_flags & FOLL_PIN) + if ((gup_flags & FOLL_PIN) && !atomic_read(¤t->mm->has_pinned)) atomic_set(¤t->mm->has_pinned, 1); if (!(gup_flags & FOLL_FAST_ONLY)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 065/192] mm: gup: pack has_pinned in MMF_HAS_PINNED 2021-06-29 2:32 incoming Andrew Morton ` (63 preceding siblings ...) 2021-06-29 2:36 ` [patch 064/192] mm: gup: allow FOLL_PIN to scale in SMP Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 066/192] mm: pagewalk: fix walk for hugepage tables Andrew Morton ` (126 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: aarcange, akpm, hughd, jack, jannh, jgg, jhubbard, kirill, ktkhai, linux-mm, mhocko, mm-commits, oleg, peterx, torvalds, willy From: Andrea Arcangeli <aarcange@redhat.com> Subject: mm: gup: pack has_pinned in MMF_HAS_PINNED has_pinned 32bit can be packed in the MMF_HAS_PINNED bit as a noop cleanup. Any atomic_inc/dec to the mm cacheline shared by all threads in pin-fast would reintroduce a loss of SMP scalability to pin-fast, so there's no future potential usefulness to keep an atomic in the mm for this. set_bit(MMF_HAS_PINNED) will be theoretically a bit slower than WRITE_ONCE (atomic_set is equivalent to WRITE_ONCE), but the set_bit (just like atomic_set after this commit) has to be still issued only once per "mm", so the difference between the two will be lost in the noise. will-it-scale "mmap2" shows no change in performance with enterprise config as expected. will-it-scale "pin_fast" retains the > 4000% SMP scalability performance improvement against upstream as expected. This is a noop as far as overall performance and SMP scalability are concerned. [peterx@redhat.com: pack has_pinned in MMF_HAS_PINNED] Link: https://lkml.kernel.org/r/YJqWESqyxa8OZA+2@t490s [akpm@linux-foundation.org: coding style fixes] [peterx@redhat.com: fix build for task_mmu.c, introduce mm_set_has_pinned_flag, fix comments] Link: https://lkml.kernel.org/r/20210507150553.208763-4-peterx@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Kirill Shutemov <kirill@shutemov.name> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- fs/proc/task_mmu.c | 2 +- include/linux/mm.h | 2 +- include/linux/mm_types.h | 10 ---------- include/linux/sched/coredump.h | 8 ++++++++ kernel/fork.c | 1 - mm/gup.c | 19 +++++++++++++++---- 6 files changed, 25 insertions(+), 17 deletions(-) --- a/fs/proc/task_mmu.c~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/fs/proc/task_mmu.c @@ -1047,7 +1047,7 @@ static inline bool pte_is_pinned(struct return false; if (!is_cow_mapping(vma->vm_flags)) return false; - if (likely(!atomic_read(&vma->vm_mm->has_pinned))) + if (likely(!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags))) return false; page = vm_normal_page(vma, addr, pte); if (!page) --- a/include/linux/mm.h~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/include/linux/mm.h @@ -1341,7 +1341,7 @@ static inline bool page_needs_cow_for_dm if (!is_cow_mapping(vma->vm_flags)) return false; - if (!atomic_read(&vma->vm_mm->has_pinned)) + if (!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags)) return false; return page_maybe_dma_pinned(page); --- a/include/linux/mm_types.h~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/include/linux/mm_types.h @@ -435,16 +435,6 @@ struct mm_struct { */ atomic_t mm_count; - /** - * @has_pinned: Whether this mm has pinned any pages. This can - * be either replaced in the future by @pinned_vm when it - * becomes stable, or grow into a counter on its own. We're - * aggresive on this bit now - even if the pinned pages were - * unpinned later on, we'll still keep this bit set for the - * lifecycle of this mm just for simplicity. - */ - atomic_t has_pinned; - #ifdef CONFIG_MMU atomic_long_t pgtables_bytes; /* PTE page table pages */ #endif --- a/include/linux/sched/coredump.h~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/include/linux/sched/coredump.h @@ -73,6 +73,14 @@ static inline int get_dumpable(struct mm #define MMF_OOM_VICTIM 25 /* mm is the oom victim */ #define MMF_OOM_REAP_QUEUED 26 /* mm was queued for oom_reaper */ #define MMF_MULTIPROCESS 27 /* mm is shared between processes */ +/* + * MMF_HAS_PINNED: Whether this mm has pinned any pages. This can be either + * replaced in the future by mm.pinned_vm when it becomes stable, or grow into + * a counter on its own. We're aggresive on this bit for now: even if the + * pinned pages were unpinned later on, we'll still keep this bit set for the + * lifecycle of this mm, just for simplicity. + */ +#define MMF_HAS_PINNED 28 /* FOLL_PIN has run, never cleared */ #define MMF_DISABLE_THP_MASK (1 << MMF_DISABLE_THP) #define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\ --- a/kernel/fork.c~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/kernel/fork.c @@ -1029,7 +1029,6 @@ static struct mm_struct *mm_init(struct mm_pgtables_bytes_init(mm); mm->map_count = 0; mm->locked_vm = 0; - atomic_set(&mm->has_pinned, 0); atomic64_set(&mm->pinned_vm, 0); memset(&mm->rss_stat, 0, sizeof(mm->rss_stat)); spin_lock_init(&mm->page_table_lock); --- a/mm/gup.c~mm-gup-pack-has_pinned-in-mmf_has_pinned +++ a/mm/gup.c @@ -420,6 +420,17 @@ void unpin_user_pages(struct page **page } EXPORT_SYMBOL(unpin_user_pages); +/* + * Set the MMF_HAS_PINNED if not set yet; after set it'll be there for the mm's + * lifecycle. Avoid setting the bit unless necessary, or it might cause write + * cache bouncing on large SMP machines for concurrent pinned gups. + */ +static inline void mm_set_has_pinned_flag(unsigned long *mm_flags) +{ + if (!test_bit(MMF_HAS_PINNED, mm_flags)) + set_bit(MMF_HAS_PINNED, mm_flags); +} + #ifdef CONFIG_MMU static struct page *no_page_table(struct vm_area_struct *vma, unsigned int flags) @@ -1320,8 +1331,8 @@ static __always_inline long __get_user_p BUG_ON(*locked != 1); } - if ((flags & FOLL_PIN) && !atomic_read(&mm->has_pinned)) - atomic_set(&mm->has_pinned, 1); + if (flags & FOLL_PIN) + mm_set_has_pinned_flag(&mm->flags); /* * FOLL_PIN and FOLL_GET are mutually exclusive. Traditional behavior @@ -2641,8 +2652,8 @@ static int internal_get_user_pages_fast( FOLL_FAST_ONLY))) return -EINVAL; - if ((gup_flags & FOLL_PIN) && !atomic_read(¤t->mm->has_pinned)) - atomic_set(¤t->mm->has_pinned, 1); + if (gup_flags & FOLL_PIN) + mm_set_has_pinned_flag(¤t->mm->flags); if (!(gup_flags & FOLL_FAST_ONLY)) might_lock_read(¤t->mm->mmap_lock); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 066/192] mm: pagewalk: fix walk for hugepage tables 2021-06-29 2:32 incoming Andrew Morton ` (64 preceding siblings ...) 2021-06-29 2:36 ` [patch 065/192] mm: gup: pack has_pinned in MMF_HAS_PINNED Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 067/192] mm/swapfile: use percpu_ref to serialize against concurrent swapoff Andrew Morton ` (125 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, benh, christophe.leroy, dja, linux-mm, mm-commits, mpe, oohall, paulus, steven.price, torvalds From: Christophe Leroy <christophe.leroy@csgroup.eu> Subject: mm: pagewalk: fix walk for hugepage tables Pagewalk ignores hugepd entries and walk down the tables as if it was traditionnal entries, leading to crazy result. Add walk_hugepd_range() and use it to walk hugepage tables. Link: https://lkml.kernel.org/r/38d04410700c8d02f28ba37e020b62c55d6f3d2c.1624597695.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Steven Price <steven.price@arm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Daniel Axtens <dja@axtens.net> Cc: "Oliver O'Halloran" <oohall@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/pagewalk.c | 58 +++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 53 insertions(+), 5 deletions(-) --- a/mm/pagewalk.c~mm-pagewalk-fix-walk-for-hugepage-tables +++ a/mm/pagewalk.c @@ -58,6 +58,45 @@ static int walk_pte_range(pmd_t *pmd, un return err; } +#ifdef CONFIG_ARCH_HAS_HUGEPD +static int walk_hugepd_range(hugepd_t *phpd, unsigned long addr, + unsigned long end, struct mm_walk *walk, int pdshift) +{ + int err = 0; + const struct mm_walk_ops *ops = walk->ops; + int shift = hugepd_shift(*phpd); + int page_size = 1 << shift; + + if (!ops->pte_entry) + return 0; + + if (addr & (page_size - 1)) + return 0; + + for (;;) { + pte_t *pte; + + spin_lock(&walk->mm->page_table_lock); + pte = hugepte_offset(*phpd, addr, pdshift); + err = ops->pte_entry(pte, addr, addr + page_size, walk); + spin_unlock(&walk->mm->page_table_lock); + + if (err) + break; + if (addr >= end - page_size) + break; + addr += page_size; + } + return err; +} +#else +static int walk_hugepd_range(hugepd_t *phpd, unsigned long addr, + unsigned long end, struct mm_walk *walk, int pdshift) +{ + return 0; +} +#endif + static int walk_pmd_range(pud_t *pud, unsigned long addr, unsigned long end, struct mm_walk *walk) { @@ -108,7 +147,10 @@ again: goto again; } - err = walk_pte_range(pmd, addr, next, walk); + if (is_hugepd(__hugepd(pmd_val(*pmd)))) + err = walk_hugepd_range((hugepd_t *)pmd, addr, next, walk, PMD_SHIFT); + else + err = walk_pte_range(pmd, addr, next, walk); if (err) break; } while (pmd++, addr = next, addr != end); @@ -157,7 +199,10 @@ static int walk_pud_range(p4d_t *p4d, un if (pud_none(*pud)) goto again; - err = walk_pmd_range(pud, addr, next, walk); + if (is_hugepd(__hugepd(pud_val(*pud)))) + err = walk_hugepd_range((hugepd_t *)pud, addr, next, walk, PUD_SHIFT); + else + err = walk_pmd_range(pud, addr, next, walk); if (err) break; } while (pud++, addr = next, addr != end); @@ -189,7 +234,9 @@ static int walk_p4d_range(pgd_t *pgd, un if (err) break; } - if (ops->pud_entry || ops->pmd_entry || ops->pte_entry) + if (is_hugepd(__hugepd(p4d_val(*p4d)))) + err = walk_hugepd_range((hugepd_t *)p4d, addr, next, walk, P4D_SHIFT); + else if (ops->pud_entry || ops->pmd_entry || ops->pte_entry) err = walk_pud_range(p4d, addr, next, walk); if (err) break; @@ -224,8 +271,9 @@ static int walk_pgd_range(unsigned long if (err) break; } - if (ops->p4d_entry || ops->pud_entry || ops->pmd_entry || - ops->pte_entry) + if (is_hugepd(__hugepd(pgd_val(*pgd)))) + err = walk_hugepd_range((hugepd_t *)pgd, addr, next, walk, PGDIR_SHIFT); + else if (ops->p4d_entry || ops->pud_entry || ops->pmd_entry || ops->pte_entry) err = walk_p4d_range(pgd, addr, next, walk); if (err) break; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 067/192] mm/swapfile: use percpu_ref to serialize against concurrent swapoff 2021-06-29 2:32 incoming Andrew Morton ` (65 preceding siblings ...) 2021-06-29 2:36 ` [patch 066/192] mm: pagewalk: fix walk for hugepage tables Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 068/192] swap: fix do_swap_page() race with swapoff Andrew Morton ` (124 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, alexs, david, dennis, hannes, hughd, iamjoonsoo.kim, linmiaohe, linux-mm, mhocko, minchan, mm-commits, richard.weiyang, shy828301, tim.c.chen, torvalds, willy, ying.huang, yuzhao From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/swapfile: use percpu_ref to serialize against concurrent swapoff Patch series "close various race windows for swap", v6. When I was investigating the swap code, I found some possible race windows. This series aims to fix all these races. But using current get/put_swap_device() to guard against concurrent swapoff for swap_readpage() looks terrible because swap_readpage() may take really long time. And to reduce the performance overhead on the hot-path as much as possible, it appears we can use the percpu_ref to close this race window(as suggested by Huang, Ying). The patch 1 adds percpu_ref support for swap and most of the remaining patches try to use this to close various race windows. More details can be found in the respective changelogs. This patch (of 4): Using current get/put_swap_device() to guard against concurrent swapoff for some swap ops, e.g. swap_readpage(), looks terrible because they might take really long time. This patch adds the percpu_ref support to serialize against concurrent swapoff(as suggested by Huang, Ying). Also we remove the SWP_VALID flag because it's used together with RCU solution. Link: https://lkml.kernel.org/r/20210426123316.806267-1-linmiaohe@huawei.com Link: https://lkml.kernel.org/r/20210426123316.806267-2-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Cc: Alex Shi <alexs@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/swap.h | 5 +- mm/swapfile.c | 79 +++++++++++++++++++++++++---------------- 2 files changed, 52 insertions(+), 32 deletions(-) --- a/include/linux/swap.h~mm-swapfile-use-percpu_ref-to-serialize-against-concurrent-swapoff +++ a/include/linux/swap.h @@ -177,7 +177,6 @@ enum { SWP_PAGE_DISCARD = (1 << 10), /* freed swap page-cluster discards */ SWP_STABLE_WRITES = (1 << 11), /* no overwrite PG_writeback pages */ SWP_SYNCHRONOUS_IO = (1 << 12), /* synchronous IO is efficient */ - SWP_VALID = (1 << 13), /* swap is valid to be operated on? */ /* add others here before... */ SWP_SCANNING = (1 << 14), /* refcount in scan_swap_map */ }; @@ -240,6 +239,7 @@ struct swap_cluster_list { * The in-memory structure used to track swap areas. */ struct swap_info_struct { + struct percpu_ref users; /* indicate and keep swap device valid. */ unsigned long flags; /* SWP_USED etc: see above */ signed short prio; /* swap priority of this type */ struct plist_node list; /* entry in swap_active_head */ @@ -260,6 +260,7 @@ struct swap_info_struct { struct block_device *bdev; /* swap device or bdev of swap file */ struct file *swap_file; /* seldom referenced */ unsigned int old_block_size; /* seldom referenced */ + struct completion comp; /* seldom referenced */ #ifdef CONFIG_FRONTSWAP unsigned long *frontswap_map; /* frontswap in-use, one bit per page */ atomic_t frontswap_pages; /* frontswap pages in-use counter */ @@ -511,7 +512,7 @@ sector_t swap_page_sector(struct page *p static inline void put_swap_device(struct swap_info_struct *si) { - rcu_read_unlock(); + percpu_ref_put(&si->users); } #else /* CONFIG_SWAP */ --- a/mm/swapfile.c~mm-swapfile-use-percpu_ref-to-serialize-against-concurrent-swapoff +++ a/mm/swapfile.c @@ -39,6 +39,7 @@ #include <linux/export.h> #include <linux/swap_slots.h> #include <linux/sort.h> +#include <linux/completion.h> #include <asm/tlbflush.h> #include <linux/swapops.h> @@ -511,6 +512,14 @@ static void swap_discard_work(struct wor spin_unlock(&si->lock); } +static void swap_users_ref_free(struct percpu_ref *ref) +{ + struct swap_info_struct *si; + + si = container_of(ref, struct swap_info_struct, users); + complete(&si->comp); +} + static void alloc_cluster(struct swap_info_struct *si, unsigned long idx) { struct swap_cluster_info *ci = si->cluster_info; @@ -1270,18 +1279,12 @@ static unsigned char __swap_entry_free_l * via preventing the swap device from being swapoff, until * put_swap_device() is called. Otherwise return NULL. * - * The entirety of the RCU read critical section must come before the - * return from or after the call to synchronize_rcu() in - * enable_swap_info() or swapoff(). So if "si->flags & SWP_VALID" is - * true, the si->map, si->cluster_info, etc. must be valid in the - * critical section. - * * Notice that swapoff or swapoff+swapon can still happen before the - * rcu_read_lock() in get_swap_device() or after the rcu_read_unlock() - * in put_swap_device() if there isn't any other way to prevent - * swapoff, such as page lock, page table lock, etc. The caller must - * be prepared for that. For example, the following situation is - * possible. + * percpu_ref_tryget_live() in get_swap_device() or after the + * percpu_ref_put() in put_swap_device() if there isn't any other way + * to prevent swapoff, such as page lock, page table lock, etc. The + * caller must be prepared for that. For example, the following + * situation is possible. * * CPU1 CPU2 * do_swap_page() @@ -1309,21 +1312,27 @@ struct swap_info_struct *get_swap_device si = swp_swap_info(entry); if (!si) goto bad_nofile; - - rcu_read_lock(); - if (data_race(!(si->flags & SWP_VALID))) - goto unlock_out; + if (!percpu_ref_tryget_live(&si->users)) + goto out; + /* + * Guarantee the si->users are checked before accessing other + * fields of swap_info_struct. + * + * Paired with the spin_unlock() after setup_swap_info() in + * enable_swap_info(). + */ + smp_rmb(); offset = swp_offset(entry); if (offset >= si->max) - goto unlock_out; + goto put_out; return si; bad_nofile: pr_err("%s: %s%08lx\n", __func__, Bad_file, entry.val); out: return NULL; -unlock_out: - rcu_read_unlock(); +put_out: + percpu_ref_put(&si->users); return NULL; } @@ -2466,7 +2475,7 @@ static void setup_swap_info(struct swap_ static void _enable_swap_info(struct swap_info_struct *p) { - p->flags |= SWP_WRITEOK | SWP_VALID; + p->flags |= SWP_WRITEOK; atomic_long_add(p->pages, &nr_swap_pages); total_swap_pages += p->pages; @@ -2497,10 +2506,9 @@ static void enable_swap_info(struct swap spin_unlock(&p->lock); spin_unlock(&swap_lock); /* - * Guarantee swap_map, cluster_info, etc. fields are valid - * between get/put_swap_device() if SWP_VALID bit is set + * Finished initializing swap device, now it's safe to reference it. */ - synchronize_rcu(); + percpu_ref_resurrect(&p->users); spin_lock(&swap_lock); spin_lock(&p->lock); _enable_swap_info(p); @@ -2616,16 +2624,16 @@ SYSCALL_DEFINE1(swapoff, const char __us reenable_swap_slots_cache_unlock(); - spin_lock(&swap_lock); - spin_lock(&p->lock); - p->flags &= ~SWP_VALID; /* mark swap device as invalid */ - spin_unlock(&p->lock); - spin_unlock(&swap_lock); /* - * wait for swap operations protected by get/put_swap_device() - * to complete + * Wait for swap operations protected by get/put_swap_device() + * to complete. + * + * We need synchronize_rcu() here to protect the accessing to + * the swap cache data structure. */ + percpu_ref_kill(&p->users); synchronize_rcu(); + wait_for_completion(&p->comp); flush_work(&p->discard_work); @@ -2857,6 +2865,12 @@ static struct swap_info_struct *alloc_sw if (!p) return ERR_PTR(-ENOMEM); + if (percpu_ref_init(&p->users, swap_users_ref_free, + PERCPU_REF_INIT_DEAD, GFP_KERNEL)) { + kvfree(p); + return ERR_PTR(-ENOMEM); + } + spin_lock(&swap_lock); for (type = 0; type < nr_swapfiles; type++) { if (!(swap_info[type]->flags & SWP_USED)) @@ -2864,6 +2878,7 @@ static struct swap_info_struct *alloc_sw } if (type >= MAX_SWAPFILES) { spin_unlock(&swap_lock); + percpu_ref_exit(&p->users); kvfree(p); return ERR_PTR(-EPERM); } @@ -2891,9 +2906,13 @@ static struct swap_info_struct *alloc_sw plist_node_init(&p->avail_lists[i], 0); p->flags = SWP_USED; spin_unlock(&swap_lock); - kvfree(defer); + if (defer) { + percpu_ref_exit(&defer->users); + kvfree(defer); + } spin_lock_init(&p->lock); spin_lock_init(&p->cont_lock); + init_completion(&p->comp); return p; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 068/192] swap: fix do_swap_page() race with swapoff 2021-06-29 2:32 incoming Andrew Morton ` (66 preceding siblings ...) 2021-06-29 2:36 ` [patch 067/192] mm/swapfile: use percpu_ref to serialize against concurrent swapoff Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 069/192] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() Andrew Morton ` (123 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, alexs, david, dennis, hannes, hughd, iamjoonsoo.kim, linmiaohe, linux-mm, mhocko, minchan, mm-commits, richard.weiyang, shy828301, tim.c.chen, torvalds, willy, ying.huang, yuzhao From: Miaohe Lin <linmiaohe@huawei.com> Subject: swap: fix do_swap_page() race with swapoff When I was investigating the swap code, I found the below possible race window: CPU 1 CPU 2 ----- ----- do_swap_page if (data_race(si->flags & SWP_SYNCHRONOUS_IO) swap_readpage if (data_race(sis->flags & SWP_FS_OPS)) { swapoff .. p->swap_file = NULL; .. struct file *swap_file = sis->swap_file; struct address_space *mapping = swap_file->f_mapping;[oops!] Note that for the pages that are swapped in through swap cache, this isn't an issue. Because the page is locked, and the swap entry will be marked with SWAP_HAS_CACHE, so swapoff() can not proceed until the page has been unlocked. Fix this race by using get/put_swap_device() to guard against concurrent swapoff. Link: https://lkml.kernel.org/r/20210426123316.806267-3-linmiaohe@huawei.com Fixes: 0bcac06f27d7 ("mm,swap: skip swapcache for swapin of synchronous device") Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Cc: Alex Shi <alexs@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/swap.h | 9 +++++++++ mm/memory.c | 11 +++++++++-- 2 files changed, 18 insertions(+), 2 deletions(-) --- a/include/linux/swap.h~swap-fix-do_swap_page-race-with-swapoff +++ a/include/linux/swap.h @@ -527,6 +527,15 @@ static inline struct swap_info_struct *s return NULL; } +static inline struct swap_info_struct *get_swap_device(swp_entry_t entry) +{ + return NULL; +} + +static inline void put_swap_device(struct swap_info_struct *si) +{ +} + #define swap_address_space(entry) (NULL) #define get_nr_swap_pages() 0L #define total_swap_pages 0L --- a/mm/memory.c~swap-fix-do_swap_page-race-with-swapoff +++ a/mm/memory.c @@ -3353,6 +3353,7 @@ vm_fault_t do_swap_page(struct vm_fault { struct vm_area_struct *vma = vmf->vma; struct page *page = NULL, *swapcache; + struct swap_info_struct *si = NULL; swp_entry_t entry; pte_t pte; int locked; @@ -3380,14 +3381,16 @@ vm_fault_t do_swap_page(struct vm_fault goto out; } + /* Prevent swapoff from happening to us. */ + si = get_swap_device(entry); + if (unlikely(!si)) + goto out; delayacct_set_flag(current, DELAYACCT_PF_SWAPIN); page = lookup_swap_cache(entry, vma, vmf->address); swapcache = page; if (!page) { - struct swap_info_struct *si = swp_swap_info(entry); - if (data_race(si->flags & SWP_SYNCHRONOUS_IO) && __swap_count(entry) == 1) { /* skip swapcache */ @@ -3556,6 +3559,8 @@ vm_fault_t do_swap_page(struct vm_fault unlock: pte_unmap_unlock(vmf->pte, vmf->ptl); out: + if (si) + put_swap_device(si); return ret; out_nomap: pte_unmap_unlock(vmf->pte, vmf->ptl); @@ -3567,6 +3572,8 @@ out_release: unlock_page(swapcache); put_page(swapcache); } + if (si) + put_swap_device(si); return ret; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 069/192] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() 2021-06-29 2:32 incoming Andrew Morton ` (67 preceding siblings ...) 2021-06-29 2:36 ` [patch 068/192] swap: fix do_swap_page() race with swapoff Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:36 ` [patch 070/192] mm/shmem: fix shmem_swapin() race with swapoff Andrew Morton ` (122 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, alexs, david, dennis, hannes, hughd, iamjoonsoo.kim, linmiaohe, linux-mm, mhocko, minchan, mm-commits, richard.weiyang, shy828301, tim.c.chen, torvalds, willy, ying.huang, yuzhao From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() The non_swap_entry() was used for working with VMA based swap readahead via commit ec560175c0b6 ("mm, swap: VMA based swap readahead"). At that time, the non_swap_entry() checking is necessary because the function is called before checking that in do_swap_page(). Then it's moved to swap_ra_info() since commit eaf649ebc3ac ("mm: swap: clean up swap readahead"). After that, the non_swap_entry() checking is unnecessary, because swap_ra_info() is called after non_swap_entry() has been checked already. The resulting code is confusing as the non_swap_entry() check looks racy now because while we released the pte lock, somebody else might have faulted in this pte. So we should check whether it's swap pte first to guard against such race or swap_type will be unexpected. But the race isn't important because it will not cause problem. We would have enough checking when we really operate the PTE entries later. So we remove the non_swap_entry() check here to avoid confusion. Link: https://lkml.kernel.org/r/20210426123316.806267-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Cc: Alex Shi <alexs@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swap_state.c | 6 ------ 1 file changed, 6 deletions(-) --- a/mm/swap_state.c~mm-swap-remove-confusing-checking-for-non_swap_entry-in-swap_ra_info +++ a/mm/swap_state.c @@ -721,7 +721,6 @@ static void swap_ra_info(struct vm_fault { struct vm_area_struct *vma = vmf->vma; unsigned long ra_val; - swp_entry_t entry; unsigned long faddr, pfn, fpfn; unsigned long start, end; pte_t *pte, *orig_pte; @@ -739,11 +738,6 @@ static void swap_ra_info(struct vm_fault faddr = vmf->address; orig_pte = pte = pte_offset_map(vmf->pmd, faddr); - entry = pte_to_swp_entry(*pte); - if ((unlikely(non_swap_entry(entry)))) { - pte_unmap(orig_pte); - return; - } fpfn = PFN_DOWN(faddr); ra_val = GET_SWAP_RA_VAL(vma); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 070/192] mm/shmem: fix shmem_swapin() race with swapoff 2021-06-29 2:32 incoming Andrew Morton ` (68 preceding siblings ...) 2021-06-29 2:36 ` [patch 069/192] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() Andrew Morton @ 2021-06-29 2:36 ` Andrew Morton 2021-06-29 2:37 ` [patch 071/192] mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION Andrew Morton ` (121 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:36 UTC (permalink / raw) To: akpm, alexs, david, dennis, hannes, hughd, iamjoonsoo.kim, linmiaohe, linux-mm, mhocko, minchan, mm-commits, richard.weiyang, shy828301, tim.c.chen, torvalds, willy, ying.huang, yuzhao From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/shmem: fix shmem_swapin() race with swapoff When I was investigating the swap code, I found the below possible race window: CPU 1 CPU 2 ----- ----- shmem_swapin swap_cluster_readahead if (likely(si->flags & (SWP_BLKDEV | SWP_FS_OPS))) { swapoff .. si->swap_file = NULL; .. struct inode *inode = si->swap_file->f_mapping->host;[oops!] Close this race window by using get/put_swap_device() to guard against concurrent swapoff. Link: https://lkml.kernel.org/r/20210426123316.806267-5-linmiaohe@huawei.com Fixes: 8fd2e0b505d1 ("mm: swap: check if swap backing device is congested or not") Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Alex Shi <alexs@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yang Shi <shy828301@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/shmem.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) --- a/mm/shmem.c~mm-shmem-fix-shmem_swapin-race-with-swapoff +++ a/mm/shmem.c @@ -1696,7 +1696,8 @@ static int shmem_swapin_page(struct inod struct address_space *mapping = inode->i_mapping; struct shmem_inode_info *info = SHMEM_I(inode); struct mm_struct *charge_mm = vma ? vma->vm_mm : current->mm; - struct page *page; + struct swap_info_struct *si; + struct page *page = NULL; swp_entry_t swap; int error; @@ -1704,6 +1705,12 @@ static int shmem_swapin_page(struct inod swap = radix_to_swp_entry(*pagep); *pagep = NULL; + /* Prevent swapoff from happening to us. */ + si = get_swap_device(swap); + if (!si) { + error = EINVAL; + goto failed; + } /* Look it up and read it in.. */ page = lookup_swap_cache(swap, NULL, 0); if (!page) { @@ -1765,6 +1772,8 @@ static int shmem_swapin_page(struct inod swap_free(swap); *pagep = page; + if (si) + put_swap_device(si); return 0; failed: if (!shmem_confirm_swap(mapping, index, swap)) @@ -1775,6 +1784,9 @@ unlock: put_page(page); } + if (si) + put_swap_device(si); + return error; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 071/192] mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION 2021-06-29 2:32 incoming Andrew Morton ` (69 preceding siblings ...) 2021-06-29 2:36 ` [patch 070/192] mm/shmem: fix shmem_swapin() race with swapoff Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 072/192] mm/swap: remove unused local variable nr_shadows Andrew Morton ` (120 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, hughd, linmiaohe, linux-mm, mm-commits, torvalds, willy From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION Patch series "Cleanups for swap", v2. This series contains just cleanups to remove some unused variables, delete meaningless forward declarations and so on. More details can be found in the respective changelogs. This patch (of 4): We should move get_swap_page_of_type() under CONFIG_HIBERNATION since the only caller of this function is now suspend routine. [linmiaohe@huawei.com: move scan_swap_map() under CONFIG_HIBERNATION] Link: https://lkml.kernel.org/r/20210521070855.2015094-1-linmiaohe@huawei.com [linmiaohe@huawei.com: fold scan_swap_map() into the only caller get_swap_page_of_type()] Link: https://lkml.kernel.org/r/20210527120328.3935132-1-linmiaohe@huawei.com Link: https://lkml.kernel.org/r/20210520134022.1370406-1-linmiaohe@huawei.com Link: https://lkml.kernel.org/r/20210520134022.1370406-2-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swapfile.c | 83 +++++++++++++++++------------------------------- 1 file changed, 31 insertions(+), 52 deletions(-) --- a/mm/swapfile.c~mm-swapfile-move-get_swap_page_of_type-under-config_hibernation +++ a/mm/swapfile.c @@ -453,10 +453,10 @@ static void swap_cluster_schedule_discar unsigned int idx) { /* - * If scan_swap_map() can't find a free cluster, it will check + * If scan_swap_map_slots() can't find a free cluster, it will check * si->swap_map directly. To make sure the discarding cluster isn't - * taken by scan_swap_map(), mark the swap entries bad (occupied). It - * will be cleared after discard + * taken by scan_swap_map_slots(), mark the swap entries bad (occupied). + * It will be cleared after discard */ memset(si->swap_map + idx * SWAPFILE_CLUSTER, SWAP_MAP_BAD, SWAPFILE_CLUSTER); @@ -589,7 +589,7 @@ static void dec_cluster_info_page(struct } /* - * It's possible scan_swap_map() uses a free cluster in the middle of free + * It's possible scan_swap_map_slots() uses a free cluster in the middle of free * cluster list. Avoiding such abuse to avoid list corruption. */ static bool @@ -1037,21 +1037,6 @@ static void swap_free_cluster(struct swa swap_range_free(si, offset, SWAPFILE_CLUSTER); } -static unsigned long scan_swap_map(struct swap_info_struct *si, - unsigned char usage) -{ - swp_entry_t entry; - int n_ret; - - n_ret = scan_swap_map_slots(si, usage, 1, &entry); - - if (n_ret) - return swp_offset(entry); - else - return 0; - -} - int get_swap_pages(int n_goal, swp_entry_t swp_entries[], int entry_size) { unsigned long size = swap_entry_size(entry_size); @@ -1114,14 +1099,14 @@ start_over: nextsi: /* * if we got here, it's likely that si was almost full before, - * and since scan_swap_map() can drop the si->lock, multiple - * callers probably all tried to get a page from the same si - * and it filled up before we could get one; or, the si filled - * up between us dropping swap_avail_lock and taking si->lock. - * Since we dropped the swap_avail_lock, the swap_avail_head - * list may have been modified; so if next is still in the - * swap_avail_head list then try it, otherwise start over - * if we have not gotten any slots. + * and since scan_swap_map_slots() can drop the si->lock, + * multiple callers probably all tried to get a page from the + * same si and it filled up before we could get one; or, the si + * filled up between us dropping swap_avail_lock and taking + * si->lock. Since we dropped the swap_avail_lock, the + * swap_avail_head list may have been modified; so if next is + * still in the swap_avail_head list then try it, otherwise + * start over if we have not gotten any slots. */ if (plist_node_empty(&next->avail_lists[node])) goto start_over; @@ -1137,30 +1122,6 @@ noswap: return n_ret; } -/* The only caller of this function is now suspend routine */ -swp_entry_t get_swap_page_of_type(int type) -{ - struct swap_info_struct *si = swap_type_to_swap_info(type); - pgoff_t offset; - - if (!si) - goto fail; - - spin_lock(&si->lock); - if (si->flags & SWP_WRITEOK) { - /* This is called for allocating swap entry, not cache */ - offset = scan_swap_map(si, 1); - if (offset) { - atomic_long_dec(&nr_swap_pages); - spin_unlock(&si->lock); - return swp_entry(type, offset); - } - } - spin_unlock(&si->lock); -fail: - return (swp_entry_t) {0}; -} - static struct swap_info_struct *__swap_info_get(swp_entry_t entry) { struct swap_info_struct *p; @@ -1812,6 +1773,24 @@ int free_swap_and_cache(swp_entry_t entr } #ifdef CONFIG_HIBERNATION + +swp_entry_t get_swap_page_of_type(int type) +{ + struct swap_info_struct *si = swap_type_to_swap_info(type); + swp_entry_t entry = {0}; + + if (!si) + goto fail; + + /* This is called for allocating swap entry, not cache */ + spin_lock(&si->lock); + if ((si->flags & SWP_WRITEOK) && scan_swap_map_slots(si, 1, 1, &entry)) + atomic_long_dec(&nr_swap_pages); + spin_unlock(&si->lock); +fail: + return entry; +} + /* * Find the swap type that corresponds to given device (if any). * @@ -2649,7 +2628,7 @@ SYSCALL_DEFINE1(swapoff, const char __us spin_lock(&p->lock); drain_mmlist(); - /* wait for anyone still in scan_swap_map */ + /* wait for anyone still in scan_swap_map_slots */ p->highest_bit = 0; /* cuts scans short */ while (p->flags >= SWP_SCANNING) { spin_unlock(&p->lock); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 072/192] mm/swap: remove unused local variable nr_shadows 2021-06-29 2:32 incoming Andrew Morton ` (70 preceding siblings ...) 2021-06-29 2:37 ` [patch 071/192] mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 073/192] mm/swap_slots.c: delete meaningless forward declarations Andrew Morton ` (119 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, hughd, linmiaohe, linux-mm, mm-commits, torvalds, willy From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/swap: remove unused local variable nr_shadows Since commit 55c653b71e8c ("mm: stop accounting shadow entries"), nr_shadows is not used anymore. Link: https://lkml.kernel.org/r/20210520134022.1370406-3-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swap_state.c | 5 ----- 1 file changed, 5 deletions(-) --- a/mm/swap_state.c~mm-swap-remove-unused-local-variable-nr_shadows +++ a/mm/swap_state.c @@ -114,8 +114,6 @@ int add_to_swap_cache(struct page *page, SetPageSwapCache(page); do { - unsigned long nr_shadows = 0; - xas_lock_irq(&xas); xas_create_range(&xas); if (xas_error(&xas)) @@ -124,7 +122,6 @@ int add_to_swap_cache(struct page *page, VM_BUG_ON_PAGE(xas.xa_index != idx + i, page); old = xas_load(&xas); if (xa_is_value(old)) { - nr_shadows++; if (shadowp) *shadowp = old; } @@ -260,7 +257,6 @@ void clear_shadow_from_swap_cache(int ty void *old; for (;;) { - unsigned long nr_shadows = 0; swp_entry_t entry = swp_entry(type, curr); struct address_space *address_space = swap_address_space(entry); XA_STATE(xas, &address_space->i_pages, curr); @@ -270,7 +266,6 @@ void clear_shadow_from_swap_cache(int ty if (!xa_is_value(old)) continue; xas_store(&xas, NULL); - nr_shadows++; } xa_unlock_irq(&address_space->i_pages); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 073/192] mm/swap_slots.c: delete meaningless forward declarations 2021-06-29 2:32 incoming Andrew Morton ` (71 preceding siblings ...) 2021-06-29 2:37 ` [patch 072/192] mm/swap: remove unused local variable nr_shadows Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 074/192] mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() Andrew Morton ` (118 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, hughd, linmiaohe, linux-mm, mm-commits, torvalds, willy From: Miaohe Lin <linmiaohe@huawei.com> Subject: mm/swap_slots.c: delete meaningless forward declarations deactivate_swap_slots_cache() and reactivate_swap_slots_cache() are only called below their implementations. So these forward declarations are meaningless and should be removed. Link: https://lkml.kernel.org/r/20210520134022.1370406-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swap_slots.c | 2 -- 1 file changed, 2 deletions(-) --- a/mm/swap_slots.c~mm-swap_slotsc-delete-meaningless-forward-declarations +++ a/mm/swap_slots.c @@ -43,8 +43,6 @@ static DEFINE_MUTEX(swap_slots_cache_mut static DEFINE_MUTEX(swap_slots_cache_enable_mutex); static void __drain_swap_slots_cache(unsigned int type); -static void deactivate_swap_slots_cache(void); -static void reactivate_swap_slots_cache(void); #define use_swap_slot_cache (swap_slot_cache_active && swap_slot_cache_enabled) #define SLOTS_CACHE 0x1 _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 074/192] mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() 2021-06-29 2:32 incoming Andrew Morton ` (72 preceding siblings ...) 2021-06-29 2:37 ` [patch 073/192] mm/swap_slots.c: delete meaningless forward declarations Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 075/192] mm: free idle swap cache page after COW Andrew Morton ` (117 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: ak, akpm, andrea.parri, dan.carpenter, daniel.m.jordan, dave.hansen, hughd, linmiaohe, linux-mm, mm-commits, osandov, paulmck, peterz, tj, torvalds, will.deacon, ying.huang From: Huang Ying <ying.huang@intel.com> Subject: mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() Before commit c10d38cc8d3e ("mm, swap: bounds check swap_info array accesses to avoid NULL derefs"), the typical code to reference the swap_info[] is as follows, type = swp_type(swp_entry); if (type >= nr_swapfiles) /* handle invalid swp_entry */; p = swap_info[type]; /* access fields of *p. OOPS! p may be NULL! */ Because the ordering isn't guaranteed, it's possible that swap_info[type] is read before "nr_swapfiles". And that may result in NULL pointer dereference. So after commit c10d38cc8d3e, the code becomes, struct swap_info_struct *swap_type_to_swap_info(int type) { if (type >= READ_ONCE(nr_swapfiles)) return NULL; smp_rmb(); return READ_ONCE(swap_info[type]); } /* users */ type = swp_type(swp_entry); p = swap_type_to_swap_info(type); if (!p) /* handle invalid swp_entry */; /* dereference p */ Where the value of swap_info[type] (that is, "p") is checked to be non-zero before being dereferenced. So, the NULL deferencing becomes impossible even if "nr_swapfiles" is read after swap_info[type]. Therefore, the "smp_rmb()" becomes unnecessary. And, we don't even need to read "nr_swapfiles" here. Because the non-zero checking for "p" is sufficient. We just need to make sure we will not access out of the boundary of the array. With the change, nr_swapfiles will only be accessed with swap_lock held, except in swapcache_free_entries(). Where the absolute correctness of the value isn't needed, as described in the comments. We still need to guarantee swap_info[type] is read before being dereferenced. That can be satisfied via the data dependency ordering enforced by READ_ONCE(swap_info[type]). This needs to be paired with proper write barriers. So smp_store_release() is used in alloc_swap_info() to guarantee the fields of *swap_info[type] is initialized before swap_info[type] itself being written. Note that the fields of *swap_info[type] is initialized to be 0 via kvzalloc() firstly. The assignment and deferencing of swap_info[type] is like rcu_assign_pointer() and rcu_dereference(). Link: https://lkml.kernel.org/r/20210520073301.1676294-1-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Cc: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Omar Sandoval <osandov@fb.com> Cc: Paul McKenney <paulmck@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swapfile.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) --- a/mm/swapfile.c~mm-swap-remove-unnecessary-smp_rmb-in-swap_type_to_swap_info +++ a/mm/swapfile.c @@ -100,11 +100,10 @@ atomic_t nr_rotate_swap = ATOMIC_INIT(0) static struct swap_info_struct *swap_type_to_swap_info(int type) { - if (type >= READ_ONCE(nr_swapfiles)) + if (type >= MAX_SWAPFILES) return NULL; - smp_rmb(); /* Pairs with smp_wmb in alloc_swap_info. */ - return READ_ONCE(swap_info[type]); + return READ_ONCE(swap_info[type]); /* rcu_dereference() */ } static inline unsigned char swap_count(unsigned char ent) @@ -2863,14 +2862,12 @@ static struct swap_info_struct *alloc_sw } if (type >= nr_swapfiles) { p->type = type; - WRITE_ONCE(swap_info[type], p); /* - * Write swap_info[type] before nr_swapfiles, in case a - * racing procfs swap_start() or swap_next() is reading them. - * (We never shrink nr_swapfiles, we never free this entry.) + * Publish the swap_info_struct after initializing it. + * Note that kvzalloc() above zeroes all its fields. */ - smp_wmb(); - WRITE_ONCE(nr_swapfiles, nr_swapfiles + 1); + smp_store_release(&swap_info[type], p); /* rcu_assign_pointer() */ + nr_swapfiles++; } else { defer = p; p = swap_info[type]; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 075/192] mm: free idle swap cache page after COW 2021-06-29 2:32 incoming Andrew Morton ` (73 preceding siblings ...) 2021-06-29 2:37 ` [patch 074/192] mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 076/192] swap: check mapping_empty() for swap cache before being freed Andrew Morton ` (116 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: aarcange, akpm, dave.hansen, hannes, hughd, linux-mm, mgorman, mhocko, mm-commits, peterx, riel, tim.c.chen, torvalds, willy, ying.huang From: Huang Ying <ying.huang@intel.com> Subject: mm: free idle swap cache page after COW With commit 09854ba94c6a ("mm: do_wp_page() simplification"), after COW, the idle swap cache page (neither the page nor the corresponding swap entry is mapped by any process) will be left in the LRU list, even if it's in the active list or the head of the inactive list. So, the page reclaimer may take quite some overhead to reclaim these actually unused pages. To help the page reclaiming, in this patch, after COW, the idle swap cache page will be tried to be freed. To avoid to introduce much overhead to the hot COW code path, a) there's almost zero overhead for non-swap case via checking PageSwapCache() firstly. b) the page lock is acquired via trylock only. To test the patch, we used pmbench memory accessing benchmark with working-set larger than available memory on a 2-socket Intel server with a NVMe SSD as swap device. Test results shows that the pmbench score increases up to 23.8% with the decreased size of swap cache and swapin throughput. Link: https://lkml.kernel.org/r/20210601053143.1380078-1-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> [use free_swap_cache()] Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Xu <peterx@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@surriel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Tim Chen <tim.c.chen@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/swap.h | 5 +++++ mm/memory.c | 2 ++ mm/swap_state.c | 2 +- 3 files changed, 8 insertions(+), 1 deletion(-) --- a/include/linux/swap.h~mm-free-idle-swap-cache-page-after-cow +++ a/include/linux/swap.h @@ -446,6 +446,7 @@ extern void __delete_from_swap_cache(str extern void delete_from_swap_cache(struct page *); extern void clear_shadow_from_swap_cache(int type, unsigned long begin, unsigned long end); +extern void free_swap_cache(struct page *); extern void free_page_and_swap_cache(struct page *); extern void free_pages_and_swap_cache(struct page **, int); extern struct page *lookup_swap_cache(swp_entry_t entry, @@ -551,6 +552,10 @@ static inline void put_swap_device(struc #define free_pages_and_swap_cache(pages, nr) \ release_pages((pages), (nr)); +static inline void free_swap_cache(struct page *page) +{ +} + static inline void show_swap_cache_info(void) { } --- a/mm/memory.c~mm-free-idle-swap-cache-page-after-cow +++ a/mm/memory.c @@ -3023,6 +3023,8 @@ static vm_fault_t wp_page_copy(struct vm munlock_vma_page(old_page); unlock_page(old_page); } + if (page_copied) + free_swap_cache(old_page); put_page(old_page); } return page_copied ? VM_FAULT_WRITE : 0; --- a/mm/swap_state.c~mm-free-idle-swap-cache-page-after-cow +++ a/mm/swap_state.c @@ -286,7 +286,7 @@ void clear_shadow_from_swap_cache(int ty * try_to_free_swap() _with_ the lock. * - Marcelo */ -static inline void free_swap_cache(struct page *page) +void free_swap_cache(struct page *page) { if (PageSwapCache(page) && !page_mapped(page) && trylock_page(page)) { try_to_free_swap(page); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 076/192] swap: check mapping_empty() for swap cache before being freed 2021-06-29 2:32 incoming Andrew Morton ` (74 preceding siblings ...) 2021-06-29 2:37 ` [patch 075/192] mm: free idle swap cache page after COW Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 077/192] mm/memcg: move mod_objcg_state() to memcontrol.c Andrew Morton ` (115 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, dan.j.williams, hannes, hch, hughd, iamjoonsoo.kim, idryomov, linmiaohe, linux-mm, mgorman, mhocko, minchan, mm-commits, torvalds, vbabka, willy, ying.huang From: Huang Ying <ying.huang@intel.com> Subject: swap: check mapping_empty() for swap cache before being freed To check whether all pages and shadow entries in swap cache has been removed before swap cache is freed. Link: https://lkml.kernel.org/r/20210608005121.511140-1-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/swap_state.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/mm/swap_state.c~swap-check-mapping_empty-for-swap-cache-before-being-freed +++ a/mm/swap_state.c @@ -693,7 +693,12 @@ int init_swap_address_space(unsigned int void exit_swap_address_space(unsigned int type) { - kvfree(swapper_spaces[type]); + int i; + struct address_space *spaces = swapper_spaces[type]; + + for (i = 0; i < nr_swapper_spaces[type]; i++) + VM_WARN_ON_ONCE(!mapping_empty(&spaces[i])); + kvfree(spaces); nr_swapper_spaces[type] = 0; swapper_spaces[type] = NULL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 077/192] mm/memcg: move mod_objcg_state() to memcontrol.c 2021-06-29 2:32 incoming Andrew Morton ` (75 preceding siblings ...) 2021-06-29 2:37 ` [patch 076/192] swap: check mapping_empty() for swap cache before being freed Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 078/192] mm/memcg: cache vmstat data in percpu memcg_stock_pcp Andrew Morton ` (114 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, alex.shi, chris, cl, guro, hannes, iamjoonsoo.kim, laoar.shao, linux-mm, longman, mhocko, mm-commits, msys.mizuma, penberg, richard.weiyang, rientjes, shakeelb, songmuchun, tj, torvalds, vbabka, vdavydov.dev, willy, zhengjun.xing From: Waiman Long <longman@redhat.com> Subject: mm/memcg: move mod_objcg_state() to memcontrol.c Patch series "mm/memcg: Reduce kmemcache memory accounting overhead", v6. With the recent introduction of the new slab memory controller, we eliminate the need for having separate kmemcaches for each memory cgroup and reduce overall kernel memory usage. However, we also add additional memory accounting overhead to each call of kmem_cache_alloc() and kmem_cache_free(). For workloads that require a lot of kmemcache allocations and de-allocations, they may experience performance regression as illustrated in [1] and [2]. A simple kernel module that performs repeated loop of 100,000,000 kmem_cache_alloc() and kmem_cache_free() of either a small 32-byte object or a big 4k object at module init time with a batch size of 4 (4 kmalloc's followed by 4 kfree's) is used for benchmarking. The benchmarking tool was run on a kernel based on linux-next-20210419. The test was run on a CascadeLake server with turbo-boosting disable to reduce run-to-run variation. The small object test exercises mainly the object stock charging and vmstat update code paths. The large object test also exercises the refill_obj_stock() and __memcg_kmem_charge()/__memcg_kmem_uncharge() code paths. With memory accounting disabled, the run time was 3.130s with both small object big object tests. With memory accounting enabled, both cgroup v1 and v2 showed similar results in the small object test. The performance results of the large object test, however, differed between cgroup v1 and v2. The execution times with the application of various patches in the patchset were: Applied patches Run time Accounting overhead %age 1 %age 2 --------------- -------- ------------------- ------ ------ Small 32-byte object: None 11.634s 8.504s 100.0% 271.7% 1-2 9.425s 6.295s 74.0% 201.1% 1-3 9.708s 6.578s 77.4% 210.2% 1-4 8.062s 4.932s 58.0% 157.6% Large 4k object (v2): None 22.107s 18.977s 100.0% 606.3% 1-2 20.960s 17.830s 94.0% 569.6% 1-3 14.238s 11.108s 58.5% 354.9% 1-4 11.329s 8.199s 43.2% 261.9% Large 4k object (v1): None 36.807s 33.677s 100.0% 1075.9% 1-2 36.648s 33.518s 99.5% 1070.9% 1-3 22.345s 19.215s 57.1% 613.9% 1-4 18.662s 15.532s 46.1% 496.2% N.B. %age 1 = overhead/unpatched overhead %age 2 = overhead/accounting disabled time Patch 2 (vmstat data stock caching) helps in both the small object test and the large v2 object test. It doesn't help much in v1 big object test. Patch 3 (refill_obj_stock improvement) does help the small object test but offer significant performance improvement for the large object test (both v1 and v2). Patch 4 (eliminating irq disable/enable) helps in all test cases. To test for the extreme case, a multi-threaded kmalloc/kfree microbenchmark was run on the 2-socket 48-core 96-thread system with 96 testing threads in the same memcg doing kmalloc+kfree of a 4k object with accounting enabled for 10s. The total number of kmalloc+kfree done in kilo operations per second (kops/s) were as follows: Applied patches v1 kops/s v1 change v2 kops/s v2 change --------------- --------- --------- --------- --------- None 3,520 1.00X 6,242 1.00X 1-2 4,304 1.22X 8,478 1.36X 1-3 4,731 1.34X 418,142 66.99X 1-4 4,587 1.30X 438,838 70.30X With memory accounting disabled, the kmalloc/kfree rate was 1,481,291 kop/s. This test shows how significant the memory accouting overhead can be in some extreme situations. For this multithreaded test, the improvement from patch 2 mainly comes from the conditional atomic xchg of objcg->nr_charged_bytes in mod_objcg_state(). By using an unconditional xchg, the operation rates were similar to the unpatched kernel. Patch 3 elminates the single highly contended cacheline of objcg->nr_charged_bytes for cgroup v2 leading to a huge performance improvement. Cgroup v1, however, still has another highly contended cacheline in the shared page counter &memcg->kmem. So the improvement is only modest. Patch 4 helps in cgroup v2, but performs worse in cgroup v1 as eliminating the irq_disable/irq_enable overhead seems to aggravate the cacheline contention. [1] https://lore.kernel.org/linux-mm/20210408193948.vfktg3azh2wrt56t@gabell/T/#u [2] https://lore.kernel.org/lkml/20210114025151.GA22932@xsang-OptiPlex-9020/ This patch (of 4): mod_objcg_state() is moved from mm/slab.h to mm/memcontrol.c so that further optimization can be done to it in later patches without exposing unnecessary details to other mm components. Link: https://lkml.kernel.org/r/20210506150007.16288-1-longman@redhat.com Link: https://lkml.kernel.org/r/20210506150007.16288-2-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Chris Down <chris@chrisdown.name> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 13 +++++++++++++ mm/slab.h | 16 ++-------------- 2 files changed, 15 insertions(+), 14 deletions(-) --- a/mm/memcontrol.c~mm-memcg-move-mod_objcg_state-to-memcontrolc +++ a/mm/memcontrol.c @@ -782,6 +782,19 @@ void __mod_lruvec_kmem_state(void *p, en rcu_read_unlock(); } +void mod_objcg_state(struct obj_cgroup *objcg, struct pglist_data *pgdat, + enum node_stat_item idx, int nr) +{ + struct mem_cgroup *memcg; + struct lruvec *lruvec; + + rcu_read_lock(); + memcg = obj_cgroup_memcg(objcg); + lruvec = mem_cgroup_lruvec(memcg, pgdat); + mod_memcg_lruvec_state(lruvec, idx, nr); + rcu_read_unlock(); +} + /** * __count_memcg_events - account VM events in a cgroup * @memcg: the memory cgroup --- a/mm/slab.h~mm-memcg-move-mod_objcg_state-to-memcontrolc +++ a/mm/slab.h @@ -240,6 +240,8 @@ static inline bool kmem_cache_debug_flag #ifdef CONFIG_MEMCG_KMEM int memcg_alloc_page_obj_cgroups(struct page *page, struct kmem_cache *s, gfp_t gfp, bool new_page); +void mod_objcg_state(struct obj_cgroup *objcg, struct pglist_data *pgdat, + enum node_stat_item idx, int nr); static inline void memcg_free_page_obj_cgroups(struct page *page) { @@ -284,20 +286,6 @@ static inline bool memcg_slab_pre_alloc_ return true; } -static inline void mod_objcg_state(struct obj_cgroup *objcg, - struct pglist_data *pgdat, - enum node_stat_item idx, int nr) -{ - struct mem_cgroup *memcg; - struct lruvec *lruvec; - - rcu_read_lock(); - memcg = obj_cgroup_memcg(objcg); - lruvec = mem_cgroup_lruvec(memcg, pgdat); - mod_memcg_lruvec_state(lruvec, idx, nr); - rcu_read_unlock(); -} - static inline void memcg_slab_post_alloc_hook(struct kmem_cache *s, struct obj_cgroup *objcg, gfp_t flags, size_t size, _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 078/192] mm/memcg: cache vmstat data in percpu memcg_stock_pcp 2021-06-29 2:32 incoming Andrew Morton ` (76 preceding siblings ...) 2021-06-29 2:37 ` [patch 077/192] mm/memcg: move mod_objcg_state() to memcontrol.c Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 079/192] mm/memcg: improve refill_obj_stock() performance Andrew Morton ` (113 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, alex.shi, chris, cl, guro, hannes, iamjoonsoo.kim, laoar.shao, linux-mm, longman, mhocko, mm-commits, msys.mizuma, penberg, richard.weiyang, rientjes, shakeelb, songmuchun, tj, torvalds, vbabka, vdavydov.dev, willy, zhengjun.xing From: Waiman Long <longman@redhat.com> Subject: mm/memcg: cache vmstat data in percpu memcg_stock_pcp Before the new slab memory controller with per object byte charging, charging and vmstat data update happen only when new slab pages are allocated or freed. Now they are done with every kmem_cache_alloc() and kmem_cache_free(). This causes additional overhead for workloads that generate a lot of alloc and free calls. The memcg_stock_pcp is used to cache byte charge for a specific obj_cgroup to reduce that overhead. To further reducing it, this patch makes the vmstat data cached in the memcg_stock_pcp structure as well until it accumulates a page size worth of update or when other cached data change. Caching the vmstat data in the per-cpu stock eliminates two writes to non-hot cachelines for memcg specific as well as memcg-lruvecs specific vmstat data by a write to a hot local stock cacheline. On a 2-socket Cascade Lake server with instrumentation enabled and this patch applied, it was found that about 20% (634400 out of 3243830) of the time when mod_objcg_state() is called leads to an actual call to __mod_objcg_state() after initial boot. When doing parallel kernel build, the figure was about 17% (24329265 out of 142512465). So caching the vmstat data reduces the number of calls to __mod_objcg_state() by more than 80%. Link: https://lkml.kernel.org/r/20210506150007.16288-3-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Chris Down <chris@chrisdown.name> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 90 ++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 87 insertions(+), 3 deletions(-) --- a/mm/memcontrol.c~mm-memcg-cache-vmstat-data-in-percpu-memcg_stock_pcp +++ a/mm/memcontrol.c @@ -782,8 +782,9 @@ void __mod_lruvec_kmem_state(void *p, en rcu_read_unlock(); } -void mod_objcg_state(struct obj_cgroup *objcg, struct pglist_data *pgdat, - enum node_stat_item idx, int nr) +static inline void mod_objcg_mlstate(struct obj_cgroup *objcg, + struct pglist_data *pgdat, + enum node_stat_item idx, int nr) { struct mem_cgroup *memcg; struct lruvec *lruvec; @@ -791,7 +792,7 @@ void mod_objcg_state(struct obj_cgroup * rcu_read_lock(); memcg = obj_cgroup_memcg(objcg); lruvec = mem_cgroup_lruvec(memcg, pgdat); - mod_memcg_lruvec_state(lruvec, idx, nr); + __mod_memcg_lruvec_state(lruvec, idx, nr); rcu_read_unlock(); } @@ -2059,7 +2060,10 @@ struct memcg_stock_pcp { #ifdef CONFIG_MEMCG_KMEM struct obj_cgroup *cached_objcg; + struct pglist_data *cached_pgdat; unsigned int nr_bytes; + int nr_slab_reclaimable_b; + int nr_slab_unreclaimable_b; #endif struct work_struct work; @@ -3008,6 +3012,67 @@ void __memcg_kmem_uncharge_page(struct p obj_cgroup_put(objcg); } +void mod_objcg_state(struct obj_cgroup *objcg, struct pglist_data *pgdat, + enum node_stat_item idx, int nr) +{ + struct memcg_stock_pcp *stock; + unsigned long flags; + int *bytes; + + local_irq_save(flags); + stock = this_cpu_ptr(&memcg_stock); + + /* + * Save vmstat data in stock and skip vmstat array update unless + * accumulating over a page of vmstat data or when pgdat or idx + * changes. + */ + if (stock->cached_objcg != objcg) { + drain_obj_stock(stock); + obj_cgroup_get(objcg); + stock->nr_bytes = atomic_read(&objcg->nr_charged_bytes) + ? atomic_xchg(&objcg->nr_charged_bytes, 0) : 0; + stock->cached_objcg = objcg; + stock->cached_pgdat = pgdat; + } else if (stock->cached_pgdat != pgdat) { + /* Flush the existing cached vmstat data */ + if (stock->nr_slab_reclaimable_b) { + mod_objcg_mlstate(objcg, pgdat, NR_SLAB_RECLAIMABLE_B, + stock->nr_slab_reclaimable_b); + stock->nr_slab_reclaimable_b = 0; + } + if (stock->nr_slab_unreclaimable_b) { + mod_objcg_mlstate(objcg, pgdat, NR_SLAB_UNRECLAIMABLE_B, + stock->nr_slab_unreclaimable_b); + stock->nr_slab_unreclaimable_b = 0; + } + stock->cached_pgdat = pgdat; + } + + bytes = (idx == NR_SLAB_RECLAIMABLE_B) ? &stock->nr_slab_reclaimable_b + : &stock->nr_slab_unreclaimable_b; + /* + * Even for large object >= PAGE_SIZE, the vmstat data will still be + * cached locally at least once before pushing it out. + */ + if (!*bytes) { + *bytes = nr; + nr = 0; + } else { + *bytes += nr; + if (abs(*bytes) > PAGE_SIZE) { + nr = *bytes; + *bytes = 0; + } else { + nr = 0; + } + } + if (nr) + mod_objcg_mlstate(objcg, pgdat, idx, nr); + + local_irq_restore(flags); +} + static bool consume_obj_stock(struct obj_cgroup *objcg, unsigned int nr_bytes) { struct memcg_stock_pcp *stock; @@ -3055,6 +3120,25 @@ static void drain_obj_stock(struct memcg stock->nr_bytes = 0; } + /* + * Flush the vmstat data in current stock + */ + if (stock->nr_slab_reclaimable_b || stock->nr_slab_unreclaimable_b) { + if (stock->nr_slab_reclaimable_b) { + mod_objcg_mlstate(old, stock->cached_pgdat, + NR_SLAB_RECLAIMABLE_B, + stock->nr_slab_reclaimable_b); + stock->nr_slab_reclaimable_b = 0; + } + if (stock->nr_slab_unreclaimable_b) { + mod_objcg_mlstate(old, stock->cached_pgdat, + NR_SLAB_UNRECLAIMABLE_B, + stock->nr_slab_unreclaimable_b); + stock->nr_slab_unreclaimable_b = 0; + } + stock->cached_pgdat = NULL; + } + obj_cgroup_put(old); stock->cached_objcg = NULL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 079/192] mm/memcg: improve refill_obj_stock() performance 2021-06-29 2:32 incoming Andrew Morton ` (77 preceding siblings ...) 2021-06-29 2:37 ` [patch 078/192] mm/memcg: cache vmstat data in percpu memcg_stock_pcp Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 080/192] mm/memcg: optimize user context object stock access Andrew Morton ` (112 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, alex.shi, chris, cl, guro, hannes, iamjoonsoo.kim, laoar.shao, linux-mm, longman, mhocko, mm-commits, msys.mizuma, penberg, richard.weiyang, rientjes, shakeelb, songmuchun, tj, torvalds, vbabka, vdavydov.dev, willy, zhengjun.xing From: Waiman Long <longman@redhat.com> Subject: mm/memcg: improve refill_obj_stock() performance There are two issues with the current refill_obj_stock() code. First of all, when nr_bytes reaches over PAGE_SIZE, it calls drain_obj_stock() to atomically flush out remaining bytes to obj_cgroup, clear cached_objcg and do a obj_cgroup_put(). It is likely that the same obj_cgroup will be used again which leads to another call to drain_obj_stock() and obj_cgroup_get() as well as atomically retrieve the available byte from obj_cgroup. That is costly. Instead, we should just uncharge the excess pages, reduce the stock bytes and be done with it. The drain_obj_stock() function should only be called when obj_cgroup changes. Secondly, when charging an object of size not less than a page in obj_cgroup_charge(), it is possible that the remaining bytes to be refilled to the stock will overflow a page and cause refill_obj_stock() to uncharge 1 page. To avoid the additional uncharge in this case, a new allow_uncharge flag is added to refill_obj_stock() which will be set to false when called from obj_cgroup_charge() so that an uncharge_pages() call won't be issued right after a charge_pages() call unless the objcg changes. A multithreaded kmalloc+kfree microbenchmark on a 2-socket 48-core 96-thread x86-64 system with 96 testing threads were run. Before this patch, the total number of kilo kmalloc+kfree operations done for a 4k large object by all the testing threads per second were 4,304 kops/s (cgroup v1) and 8,478 kops/s (cgroup v2). After applying this patch, the number were 4,731 (cgroup v1) and 418,142 (cgroup v2) respectively. This represents a performance improvement of 1.10X (cgroup v1) and 49.3X (cgroup v2). Link: https://lkml.kernel.org/r/20210506150007.16288-4-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Chris Down <chris@chrisdown.name> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 48 +++++++++++++++++++++++++++++++++------------- 1 file changed, 35 insertions(+), 13 deletions(-) --- a/mm/memcontrol.c~mm-memcg-improve-refill_obj_stock-performance +++ a/mm/memcontrol.c @@ -3157,10 +3157,12 @@ static bool obj_stock_flush_required(str return false; } -static void refill_obj_stock(struct obj_cgroup *objcg, unsigned int nr_bytes) +static void refill_obj_stock(struct obj_cgroup *objcg, unsigned int nr_bytes, + bool allow_uncharge) { struct memcg_stock_pcp *stock; unsigned long flags; + unsigned int nr_pages = 0; local_irq_save(flags); @@ -3169,14 +3171,21 @@ static void refill_obj_stock(struct obj_ drain_obj_stock(stock); obj_cgroup_get(objcg); stock->cached_objcg = objcg; - stock->nr_bytes = atomic_xchg(&objcg->nr_charged_bytes, 0); + stock->nr_bytes = atomic_read(&objcg->nr_charged_bytes) + ? atomic_xchg(&objcg->nr_charged_bytes, 0) : 0; + allow_uncharge = true; /* Allow uncharge when objcg changes */ } stock->nr_bytes += nr_bytes; - if (stock->nr_bytes > PAGE_SIZE) - drain_obj_stock(stock); + if (allow_uncharge && (stock->nr_bytes > PAGE_SIZE)) { + nr_pages = stock->nr_bytes >> PAGE_SHIFT; + stock->nr_bytes &= (PAGE_SIZE - 1); + } local_irq_restore(flags); + + if (nr_pages) + obj_cgroup_uncharge_pages(objcg, nr_pages); } int obj_cgroup_charge(struct obj_cgroup *objcg, gfp_t gfp, size_t size) @@ -3188,14 +3197,27 @@ int obj_cgroup_charge(struct obj_cgroup return 0; /* - * In theory, memcg->nr_charged_bytes can have enough + * In theory, objcg->nr_charged_bytes can have enough * pre-charged bytes to satisfy the allocation. However, - * flushing memcg->nr_charged_bytes requires two atomic - * operations, and memcg->nr_charged_bytes can't be big, - * so it's better to ignore it and try grab some new pages. - * memcg->nr_charged_bytes will be flushed in - * refill_obj_stock(), called from this function or - * independently later. + * flushing objcg->nr_charged_bytes requires two atomic + * operations, and objcg->nr_charged_bytes can't be big. + * The shared objcg->nr_charged_bytes can also become a + * performance bottleneck if all tasks of the same memcg are + * trying to update it. So it's better to ignore it and try + * grab some new pages. The stock's nr_bytes will be flushed to + * objcg->nr_charged_bytes later on when objcg changes. + * + * The stock's nr_bytes may contain enough pre-charged bytes + * to allow one less page from being charged, but we can't rely + * on the pre-charged bytes not being changed outside of + * consume_obj_stock() or refill_obj_stock(). So ignore those + * pre-charged bytes as well when charging pages. To avoid a + * page uncharge right after a page charge, we set the + * allow_uncharge flag to false when calling refill_obj_stock() + * to temporarily allow the pre-charged bytes to exceed the page + * size limit. The maximum reachable value of the pre-charged + * bytes is (sizeof(object) + PAGE_SIZE - 2) if there is no data + * race. */ nr_pages = size >> PAGE_SHIFT; nr_bytes = size & (PAGE_SIZE - 1); @@ -3205,14 +3227,14 @@ int obj_cgroup_charge(struct obj_cgroup ret = obj_cgroup_charge_pages(objcg, gfp, nr_pages); if (!ret && nr_bytes) - refill_obj_stock(objcg, PAGE_SIZE - nr_bytes); + refill_obj_stock(objcg, PAGE_SIZE - nr_bytes, false); return ret; } void obj_cgroup_uncharge(struct obj_cgroup *objcg, size_t size) { - refill_obj_stock(objcg, size); + refill_obj_stock(objcg, size, true); } #endif /* CONFIG_MEMCG_KMEM */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 080/192] mm/memcg: optimize user context object stock access 2021-06-29 2:32 incoming Andrew Morton ` (78 preceding siblings ...) 2021-06-29 2:37 ` [patch 079/192] mm/memcg: improve refill_obj_stock() performance Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 081/192] mm: memcg/slab: properly set up gfp flags for objcg pointer array Andrew Morton ` (111 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, alex.shi, chris, cl, guro, hannes, iamjoonsoo.kim, laoar.shao, linux-mm, longman, mhocko, mm-commits, msys.mizuma, penberg, richard.weiyang, rientjes, shakeelb, songmuchun, tj, torvalds, vbabka, vdavydov.dev, willy, zhengjun.xing From: Waiman Long <longman@redhat.com> Subject: mm/memcg: optimize user context object stock access Most kmem_cache_alloc() calls are from user context. With instrumentation enabled, the measured amount of kmem_cache_alloc() calls from non-task context was about 0.01% of the total. The irq disable/enable sequence used in this case to access content from object stock is slow. To optimize for user context access, there are now two sets of object stocks (in the new obj_stock structure) for task context and interrupt context access respectively. The task context object stock can be accessed after disabling preemption which is cheap in non-preempt kernel. The interrupt context object stock can only be accessed after disabling interrupt. User context code can access interrupt object stock, but not vice versa. The downside of this change is that there are more data stored in local object stocks and not reflected in the charge counter and the vmstat arrays. However, this is a small price to pay for better performance. [longman@redhat.com: fix potential uninitialized variable warning] Link: https://lkml.kernel.org/r/20210526193602.8742-1-longman@redhat.com [akpm@linux-foundation.org: coding style fixes] Link: https://lkml.kernel.org/r/20210506150007.16288-5-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Roman Gushchin <guro@fb.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Chris Down <chris@chrisdown.name> Cc: Yafang Shao <laoar.shao@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 100 +++++++++++++++++++++++++++++++++------------- 1 file changed, 72 insertions(+), 28 deletions(-) --- a/mm/memcontrol.c~mm-memcg-optimize-user-context-object-stock-access +++ a/mm/memcontrol.c @@ -782,6 +782,10 @@ void __mod_lruvec_kmem_state(void *p, en rcu_read_unlock(); } +/* + * mod_objcg_mlstate() may be called with irq enabled, so + * mod_memcg_lruvec_state() should be used. + */ static inline void mod_objcg_mlstate(struct obj_cgroup *objcg, struct pglist_data *pgdat, enum node_stat_item idx, int nr) @@ -792,7 +796,7 @@ static inline void mod_objcg_mlstate(str rcu_read_lock(); memcg = obj_cgroup_memcg(objcg); lruvec = mem_cgroup_lruvec(memcg, pgdat); - __mod_memcg_lruvec_state(lruvec, idx, nr); + mod_memcg_lruvec_state(lruvec, idx, nr); rcu_read_unlock(); } @@ -2054,17 +2058,23 @@ void unlock_page_memcg(struct page *page } EXPORT_SYMBOL(unlock_page_memcg); -struct memcg_stock_pcp { - struct mem_cgroup *cached; /* this never be root cgroup */ - unsigned int nr_pages; - +struct obj_stock { #ifdef CONFIG_MEMCG_KMEM struct obj_cgroup *cached_objcg; struct pglist_data *cached_pgdat; unsigned int nr_bytes; int nr_slab_reclaimable_b; int nr_slab_unreclaimable_b; +#else + int dummy[0]; #endif +}; + +struct memcg_stock_pcp { + struct mem_cgroup *cached; /* this never be root cgroup */ + unsigned int nr_pages; + struct obj_stock task_obj; + struct obj_stock irq_obj; struct work_struct work; unsigned long flags; @@ -2074,12 +2084,12 @@ static DEFINE_PER_CPU(struct memcg_stock static DEFINE_MUTEX(percpu_charge_mutex); #ifdef CONFIG_MEMCG_KMEM -static void drain_obj_stock(struct memcg_stock_pcp *stock); +static void drain_obj_stock(struct obj_stock *stock); static bool obj_stock_flush_required(struct memcg_stock_pcp *stock, struct mem_cgroup *root_memcg); #else -static inline void drain_obj_stock(struct memcg_stock_pcp *stock) +static inline void drain_obj_stock(struct obj_stock *stock) { } static bool obj_stock_flush_required(struct memcg_stock_pcp *stock, @@ -2089,6 +2099,41 @@ static bool obj_stock_flush_required(str } #endif +/* + * Most kmem_cache_alloc() calls are from user context. The irq disable/enable + * sequence used in this case to access content from object stock is slow. + * To optimize for user context access, there are now two object stocks for + * task context and interrupt context access respectively. + * + * The task context object stock can be accessed by disabling preemption only + * which is cheap in non-preempt kernel. The interrupt context object stock + * can only be accessed after disabling interrupt. User context code can + * access interrupt object stock, but not vice versa. + */ +static inline struct obj_stock *get_obj_stock(unsigned long *pflags) +{ + struct memcg_stock_pcp *stock; + + if (likely(in_task())) { + *pflags = 0UL; + preempt_disable(); + stock = this_cpu_ptr(&memcg_stock); + return &stock->task_obj; + } + + local_irq_save(*pflags); + stock = this_cpu_ptr(&memcg_stock); + return &stock->irq_obj; +} + +static inline void put_obj_stock(unsigned long flags) +{ + if (likely(in_task())) + preempt_enable(); + else + local_irq_restore(flags); +} + /** * consume_stock: Try to consume stocked charge on this cpu. * @memcg: memcg to consume from. @@ -2155,7 +2200,9 @@ static void drain_local_stock(struct wor local_irq_save(flags); stock = this_cpu_ptr(&memcg_stock); - drain_obj_stock(stock); + drain_obj_stock(&stock->irq_obj); + if (in_task()) + drain_obj_stock(&stock->task_obj); drain_stock(stock); clear_bit(FLUSHING_CACHED_CHARGE, &stock->flags); @@ -3015,13 +3062,10 @@ void __memcg_kmem_uncharge_page(struct p void mod_objcg_state(struct obj_cgroup *objcg, struct pglist_data *pgdat, enum node_stat_item idx, int nr) { - struct memcg_stock_pcp *stock; unsigned long flags; + struct obj_stock *stock = get_obj_stock(&flags); int *bytes; - local_irq_save(flags); - stock = this_cpu_ptr(&memcg_stock); - /* * Save vmstat data in stock and skip vmstat array update unless * accumulating over a page of vmstat data or when pgdat or idx @@ -3070,29 +3114,26 @@ void mod_objcg_state(struct obj_cgroup * if (nr) mod_objcg_mlstate(objcg, pgdat, idx, nr); - local_irq_restore(flags); + put_obj_stock(flags); } static bool consume_obj_stock(struct obj_cgroup *objcg, unsigned int nr_bytes) { - struct memcg_stock_pcp *stock; unsigned long flags; + struct obj_stock *stock = get_obj_stock(&flags); bool ret = false; - local_irq_save(flags); - - stock = this_cpu_ptr(&memcg_stock); if (objcg == stock->cached_objcg && stock->nr_bytes >= nr_bytes) { stock->nr_bytes -= nr_bytes; ret = true; } - local_irq_restore(flags); + put_obj_stock(flags); return ret; } -static void drain_obj_stock(struct memcg_stock_pcp *stock) +static void drain_obj_stock(struct obj_stock *stock) { struct obj_cgroup *old = stock->cached_objcg; @@ -3148,8 +3189,13 @@ static bool obj_stock_flush_required(str { struct mem_cgroup *memcg; - if (stock->cached_objcg) { - memcg = obj_cgroup_memcg(stock->cached_objcg); + if (in_task() && stock->task_obj.cached_objcg) { + memcg = obj_cgroup_memcg(stock->task_obj.cached_objcg); + if (memcg && mem_cgroup_is_descendant(memcg, root_memcg)) + return true; + } + if (stock->irq_obj.cached_objcg) { + memcg = obj_cgroup_memcg(stock->irq_obj.cached_objcg); if (memcg && mem_cgroup_is_descendant(memcg, root_memcg)) return true; } @@ -3160,13 +3206,10 @@ static bool obj_stock_flush_required(str static void refill_obj_stock(struct obj_cgroup *objcg, unsigned int nr_bytes, bool allow_uncharge) { - struct memcg_stock_pcp *stock; unsigned long flags; + struct obj_stock *stock = get_obj_stock(&flags); unsigned int nr_pages = 0; - local_irq_save(flags); - - stock = this_cpu_ptr(&memcg_stock); if (stock->cached_objcg != objcg) { /* reset if necessary */ drain_obj_stock(stock); obj_cgroup_get(objcg); @@ -3182,7 +3225,7 @@ static void refill_obj_stock(struct obj_ stock->nr_bytes &= (PAGE_SIZE - 1); } - local_irq_restore(flags); + put_obj_stock(flags); if (nr_pages) obj_cgroup_uncharge_pages(objcg, nr_pages); @@ -6790,6 +6833,7 @@ static void uncharge_page(struct page *p unsigned long nr_pages; struct mem_cgroup *memcg; struct obj_cgroup *objcg; + bool use_objcg = PageMemcgKmem(page); VM_BUG_ON_PAGE(PageLRU(page), page); @@ -6798,7 +6842,7 @@ static void uncharge_page(struct page *p * page memcg or objcg at this point, we have fully * exclusive access to the page. */ - if (PageMemcgKmem(page)) { + if (use_objcg) { objcg = __page_objcg(page); /* * This get matches the put at the end of the function and @@ -6826,7 +6870,7 @@ static void uncharge_page(struct page *p nr_pages = compound_nr(page); - if (PageMemcgKmem(page)) { + if (use_objcg) { ug->nr_memory += nr_pages; ug->nr_kmem += nr_pages; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 081/192] mm: memcg/slab: properly set up gfp flags for objcg pointer array 2021-06-29 2:32 incoming Andrew Morton ` (79 preceding siblings ...) 2021-06-29 2:37 ` [patch 080/192] mm/memcg: optimize user context object stock access Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 082/192] mm: memcg/slab: create a new set of kmalloc-cg-<n> caches Andrew Morton ` (110 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, cl, guro, hannes, iamjoonsoo.kim, linux-mm, longman, mhocko, mm-commits, penberg, rientjes, shakeelb, torvalds, vbabka, vdavydov.dev From: Waiman Long <longman@redhat.com> Subject: mm: memcg/slab: properly set up gfp flags for objcg pointer array Patch series "mm: memcg/slab: Fix objcg pointer array handling problem", v4. Since the merging of the new slab memory controller in v5.9, the page structure stores a pointer to objcg pointer array for slab pages. When the slab has no used objects, it can be freed in free_slab() which will call kfree() to free the objcg pointer array in memcg_alloc_page_obj_cgroups(). If it happens that the objcg pointer array is the last used object in its slab, that slab may then be freed which may caused kfree() to be called again. With the right workload, the slab cache may be set up in a way that allows the recursive kfree() calling loop to nest deep enough to cause a kernel stack overflow and panic the system. In fact, we have a reproducer that can cause kernel stack overflow on a s390 system involving kmalloc-rcl-256 and kmalloc-rcl-128 slabs with the following kfree() loop recursively called 74 times: [ 285.520739] [<000000000ec432fc>] kfree+0x4bc/0x560 [ 285.520740] [<000000000ec43466>] __free_slab+0xc6/0x228 [ 285.520741] [<000000000ec41fc2>] __slab_free+0x3c2/0x3e0 [ 285.520742] [<000000000ec432fc>] kfree+0x4bc/0x560 : While investigating this issue, I also found an issue on the allocation side. If the objcg pointer array happen to come from the same slab or a circular dependency linkage is formed with multiple slabs, those affected slabs can never be freed again. This patch series addresses these two issues by introducing a new set of kmalloc-cg-<n> caches split from kmalloc-<n> caches. The new set will only contain non-reclaimable and non-dma objects that are accounted in memory cgroups whereas the old set are now for unaccounted objects only. By making this split, all the objcg pointer arrays will come from the kmalloc-<n> caches, but those caches will never hold any objcg pointer array. As a result, deeply nested kfree() call and the unfreeable slab problems are now gone. This patch (of 4): Since the merging of the new slab memory controller in v5.9, the page structure may store a pointer to obj_cgroup pointer array for slab pages. Currently, only the __GFP_ACCOUNT bit is masked off. However, the array is not readily reclaimable and doesn't need to come from the DMA buffer. So those GFP bits should be masked off as well. Do the flag bit clearing at memcg_alloc_page_obj_cgroups() to make sure that it is consistently applied no matter where it is called. Link: https://lkml.kernel.org/r/20210505200610.13943-1-longman@redhat.com Link: https://lkml.kernel.org/r/20210505200610.13943-2-longman@redhat.com Fixes: 286e04b8ed7a ("mm: memcg/slab: allocate obj_cgroups for non-root slab pages") Signed-off-by: Waiman Long <longman@redhat.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 8 ++++++++ mm/slab.h | 1 - 2 files changed, 8 insertions(+), 1 deletion(-) --- a/mm/memcontrol.c~mm-memcg-slab-properly-set-up-gfp-flags-for-objcg-pointer-array +++ a/mm/memcontrol.c @@ -2803,6 +2803,13 @@ retry: } #ifdef CONFIG_MEMCG_KMEM +/* + * The allocated objcg pointers array is not accounted directly. + * Moreover, it should not come from DMA buffer and is not readily + * reclaimable. So those GFP bits should be masked off. + */ +#define OBJCGS_CLEAR_MASK (__GFP_DMA | __GFP_RECLAIMABLE | __GFP_ACCOUNT) + int memcg_alloc_page_obj_cgroups(struct page *page, struct kmem_cache *s, gfp_t gfp, bool new_page) { @@ -2810,6 +2817,7 @@ int memcg_alloc_page_obj_cgroups(struct unsigned long memcg_data; void *vec; + gfp &= ~OBJCGS_CLEAR_MASK; vec = kcalloc_node(objects, sizeof(struct obj_cgroup *), gfp, page_to_nid(page)); if (!vec) --- a/mm/slab.h~mm-memcg-slab-properly-set-up-gfp-flags-for-objcg-pointer-array +++ a/mm/slab.h @@ -298,7 +298,6 @@ static inline void memcg_slab_post_alloc if (!memcg_kmem_enabled() || !objcg) return; - flags &= ~__GFP_ACCOUNT; for (i = 0; i < size; i++) { if (likely(p[i])) { page = virt_to_head_page(p[i]); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 082/192] mm: memcg/slab: create a new set of kmalloc-cg-<n> caches 2021-06-29 2:32 incoming Andrew Morton ` (80 preceding siblings ...) 2021-06-29 2:37 ` [patch 081/192] mm: memcg/slab: properly set up gfp flags for objcg pointer array Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 083/192] mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches Andrew Morton ` (109 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, cl, guro, hannes, iamjoonsoo.kim, linux-mm, longman, mhocko, mm-commits, penberg, rientjes, shakeelb, torvalds, vbabka, vdavydov.dev From: Waiman Long <longman@redhat.com> Subject: mm: memcg/slab: create a new set of kmalloc-cg-<n> caches There are currently two problems in the way the objcg pointer array (memcg_data) in the page structure is being allocated and freed. On its allocation, it is possible that the allocated objcg pointer array comes from the same slab that requires memory accounting. If this happens, the slab will never become empty again as there is at least one object left (the obj_cgroup array) in the slab. When it is freed, the objcg pointer array object may be the last one in its slab and hence causes kfree() to be called again. With the right workload, the slab cache may be set up in a way that allows the recursive kfree() calling loop to nest deep enough to cause a kernel stack overflow and panic the system. One way to solve this problem is to split the kmalloc-<n> caches (KMALLOC_NORMAL) into two separate sets - a new set of kmalloc-<n> (KMALLOC_NORMAL) caches for unaccounted objects only and a new set of kmalloc-cg-<n> (KMALLOC_CGROUP) caches for accounted objects only. All the other caches can still allow a mix of accounted and unaccounted objects. With this change, all the objcg pointer array objects will come from KMALLOC_NORMAL caches which won't have their objcg pointer arrays. So both the recursive kfree() problem and non-freeable slab problem are gone. Since both the KMALLOC_NORMAL and KMALLOC_CGROUP caches no longer have mixed accounted and unaccounted objects, this will slightly reduce the number of objcg pointer arrays that need to be allocated and save a bit of memory. On the other hand, creating a new set of kmalloc caches does have the effect of reducing cache utilization. So it is properly a wash. The new KMALLOC_CGROUP is added between KMALLOC_NORMAL and KMALLOC_RECLAIM so that the first for loop in create_kmalloc_caches() will include the newly added caches without change. [vbabka@suse.cz: don't create kmalloc-cg caches with cgroup.memory=nokmem] Link: https://lkml.kernel.org/r/20210512145107.6208-1-longman@redhat.com Link: https://lkml.kernel.org/r/20210505200610.13943-3-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Suggested-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> [longman@redhat.com: fix for CONFIG_ZONE_DMA=n] Link: https://lkml.kernel.org/r/20210512145107.6208-1-longman@redhat.com [akpm@linux-foundation.org: un-fat-finger v5 delta creation] [longman@redhat.com: disable cache merging for KMALLOC_NORMAL caches] Link: https://lkml.kernel.org/r/20210505200610.13943-4-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Suggested-by: Roman Gushchin <guro@fb.com> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/slab.h | 42 ++++++++++++++++++++++++++++++++--------- mm/internal.h | 5 ++++ mm/memcontrol.c | 2 - mm/slab_common.c | 32 ++++++++++++++++++++++--------- 4 files changed, 62 insertions(+), 19 deletions(-) --- a/include/linux/slab.h~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches +++ a/include/linux/slab.h @@ -305,9 +305,21 @@ static inline void __check_heap_object(c /* * Whenever changing this, take care of that kmalloc_type() and * create_kmalloc_caches() still work as intended. + * + * KMALLOC_NORMAL can contain only unaccounted objects whereas KMALLOC_CGROUP + * is for accounted but unreclaimable and non-dma objects. All the other + * kmem caches can have both accounted and unaccounted objects. */ enum kmalloc_cache_type { KMALLOC_NORMAL = 0, +#ifndef CONFIG_ZONE_DMA + KMALLOC_DMA = KMALLOC_NORMAL, +#endif +#ifndef CONFIG_MEMCG_KMEM + KMALLOC_CGROUP = KMALLOC_NORMAL, +#else + KMALLOC_CGROUP, +#endif KMALLOC_RECLAIM, #ifdef CONFIG_ZONE_DMA KMALLOC_DMA, @@ -319,24 +331,36 @@ enum kmalloc_cache_type { extern struct kmem_cache * kmalloc_caches[NR_KMALLOC_TYPES][KMALLOC_SHIFT_HIGH + 1]; +/* + * Define gfp bits that should not be set for KMALLOC_NORMAL. + */ +#define KMALLOC_NOT_NORMAL_BITS \ + (__GFP_RECLAIMABLE | \ + (IS_ENABLED(CONFIG_ZONE_DMA) ? __GFP_DMA : 0) | \ + (IS_ENABLED(CONFIG_MEMCG_KMEM) ? __GFP_ACCOUNT : 0)) + static __always_inline enum kmalloc_cache_type kmalloc_type(gfp_t flags) { -#ifdef CONFIG_ZONE_DMA /* * The most common case is KMALLOC_NORMAL, so test for it - * with a single branch for both flags. + * with a single branch for all the relevant flags. */ - if (likely((flags & (__GFP_DMA | __GFP_RECLAIMABLE)) == 0)) + if (likely((flags & KMALLOC_NOT_NORMAL_BITS) == 0)) return KMALLOC_NORMAL; /* - * At least one of the flags has to be set. If both are, __GFP_DMA - * is more important. + * At least one of the flags has to be set. Their priorities in + * decreasing order are: + * 1) __GFP_DMA + * 2) __GFP_RECLAIMABLE + * 3) __GFP_ACCOUNT */ - return flags & __GFP_DMA ? KMALLOC_DMA : KMALLOC_RECLAIM; -#else - return flags & __GFP_RECLAIMABLE ? KMALLOC_RECLAIM : KMALLOC_NORMAL; -#endif + if (IS_ENABLED(CONFIG_ZONE_DMA) && (flags & __GFP_DMA)) + return KMALLOC_DMA; + if (!IS_ENABLED(CONFIG_MEMCG_KMEM) || (flags & __GFP_RECLAIMABLE)) + return KMALLOC_RECLAIM; + else + return KMALLOC_CGROUP; } /* --- a/mm/internal.h~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches +++ a/mm/internal.h @@ -116,6 +116,11 @@ extern void putback_lru_page(struct page extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address); /* + * in mm/memcontrol.c: + */ +extern bool cgroup_memory_nokmem; + +/* * in mm/page_alloc.c */ --- a/mm/memcontrol.c~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches +++ a/mm/memcontrol.c @@ -83,7 +83,7 @@ DEFINE_PER_CPU(struct mem_cgroup *, int_ static bool cgroup_memory_nosocket; /* Kernel memory accounting disabled? */ -static bool cgroup_memory_nokmem; +bool cgroup_memory_nokmem; /* Whether the swap controller is active */ #ifdef CONFIG_MEMCG_SWAP --- a/mm/slab_common.c~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches +++ a/mm/slab_common.c @@ -738,21 +738,25 @@ struct kmem_cache *kmalloc_slab(size_t s } #ifdef CONFIG_ZONE_DMA -#define INIT_KMALLOC_INFO(__size, __short_size) \ -{ \ - .name[KMALLOC_NORMAL] = "kmalloc-" #__short_size, \ - .name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size, \ - .name[KMALLOC_DMA] = "dma-kmalloc-" #__short_size, \ - .size = __size, \ -} +#define KMALLOC_DMA_NAME(sz) .name[KMALLOC_DMA] = "dma-kmalloc-" #sz, #else +#define KMALLOC_DMA_NAME(sz) +#endif + +#ifdef CONFIG_MEMCG_KMEM +#define KMALLOC_CGROUP_NAME(sz) .name[KMALLOC_CGROUP] = "kmalloc-cg-" #sz, +#else +#define KMALLOC_CGROUP_NAME(sz) +#endif + #define INIT_KMALLOC_INFO(__size, __short_size) \ { \ .name[KMALLOC_NORMAL] = "kmalloc-" #__short_size, \ .name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size, \ + KMALLOC_CGROUP_NAME(__short_size) \ + KMALLOC_DMA_NAME(__short_size) \ .size = __size, \ } -#endif /* * kmalloc_info[] is to make slub_debug=,kmalloc-xx option work at boot time. @@ -838,8 +842,15 @@ void __init setup_kmalloc_cache_index_ta static void __init new_kmalloc_cache(int idx, enum kmalloc_cache_type type, slab_flags_t flags) { - if (type == KMALLOC_RECLAIM) + if (type == KMALLOC_RECLAIM) { flags |= SLAB_RECLAIM_ACCOUNT; + } else if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_CGROUP)) { + if (cgroup_memory_nokmem) { + kmalloc_caches[type][idx] = kmalloc_caches[KMALLOC_NORMAL][idx]; + return; + } + flags |= SLAB_ACCOUNT; + } kmalloc_caches[type][idx] = create_kmalloc_cache( kmalloc_info[idx].name[type], @@ -857,6 +868,9 @@ void __init create_kmalloc_caches(slab_f int i; enum kmalloc_cache_type type; + /* + * Including KMALLOC_CGROUP if CONFIG_MEMCG_KMEM defined + */ for (type = KMALLOC_NORMAL; type <= KMALLOC_RECLAIM; type++) { for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) { if (!kmalloc_caches[type][i]) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 083/192] mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches 2021-06-29 2:32 incoming Andrew Morton ` (81 preceding siblings ...) 2021-06-29 2:37 ` [patch 082/192] mm: memcg/slab: create a new set of kmalloc-cg-<n> caches Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 084/192] mm: memcontrol: fix root_mem_cgroup charging Andrew Morton ` (108 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, cl, guro, hannes, iamjoonsoo.kim, linux-mm, longman, mhocko, mm-commits, penberg, rientjes, shakeelb, torvalds, vbabka, vdavydov.dev From: Waiman Long <longman@redhat.com> Subject: mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches The KMALLOC_NORMAL (kmalloc-<n>) caches are for unaccounted objects only when CONFIG_MEMCG_KMEM is enabled. To make sure that this condition remains true, we will have to prevent KMALOC_NORMAL caches to merge with other kmem caches. This is now done by setting its refcount to -1 right after its creation. Link: https://lkml.kernel.org/r/20210505200610.13943-4-longman@redhat.com Signed-off-by: Waiman Long <longman@redhat.com> Suggested-by: Roman Gushchin <guro@fb.com> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/slab_common.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/mm/slab_common.c~mm-memcg-slab-disable-cache-merging-for-kmalloc_normal-caches +++ a/mm/slab_common.c @@ -856,6 +856,13 @@ new_kmalloc_cache(int idx, enum kmalloc_ kmalloc_info[idx].name[type], kmalloc_info[idx].size, flags, 0, kmalloc_info[idx].size); + + /* + * If CONFIG_MEMCG_KMEM is enabled, disable cache merging for + * KMALLOC_NORMAL caches. + */ + if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_NORMAL)) + kmalloc_caches[type][idx]->refcount = -1; } /* _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 084/192] mm: memcontrol: fix root_mem_cgroup charging 2021-06-29 2:32 incoming Andrew Morton ` (82 preceding siblings ...) 2021-06-29 2:37 ` [patch 083/192] mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 085/192] mm: memcontrol: fix page charging in page replacement Andrew Morton ` (107 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: fix root_mem_cgroup charging The below scenario can cause the page counters of the root_mem_cgroup to be out of balance. CPU0: CPU1: objcg = get_obj_cgroup_from_current() obj_cgroup_charge_pages(objcg) memcg_reparent_objcgs() // reparent to root_mem_cgroup WRITE_ONCE(iter->memcg, parent) // memcg == root_mem_cgroup memcg = get_mem_cgroup_from_objcg(objcg) // do not charge to the root_mem_cgroup try_charge(memcg) obj_cgroup_uncharge_pages(objcg) memcg = get_mem_cgroup_from_objcg(objcg) // uncharge from the root_mem_cgroup refill_stock(memcg) drain_stock(memcg) page_counter_uncharge(&memcg->memory) get_obj_cgroup_from_current() never returns a root_mem_cgroup's objcg, so we never explicitly charge the root_mem_cgroup. And it's not going to change. It's all about a race when we got an obj_cgroup pointing at some non-root memcg, but before we were able to charge it, the cgroup was gone, objcg was reparented to the root and so we're skipping the charging. Then we store the objcg pointer and later use to uncharge the root_mem_cgroup. This can cause the page counter to be less than the actual value. Although we do not display the value (mem_cgroup_usage) so there shouldn't be any actual problem, but there is a WARN_ON_ONCE in the page_counter_cancel(). Who knows if it will trigger? So it is better to fix it. Link: https://lkml.kernel.org/r/20210425075410.19255-1-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) --- a/mm/memcontrol.c~mm-memcontrol-fix-root_mem_cgroup-charging +++ a/mm/memcontrol.c @@ -2568,8 +2568,8 @@ out: css_put(&memcg->css); } -static int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, - unsigned int nr_pages) +static int try_charge_memcg(struct mem_cgroup *memcg, gfp_t gfp_mask, + unsigned int nr_pages) { unsigned int batch = max(MEMCG_CHARGE_BATCH, nr_pages); int nr_retries = MAX_RECLAIM_RETRIES; @@ -2581,8 +2581,6 @@ static int try_charge(struct mem_cgroup bool drained = false; unsigned long pflags; - if (mem_cgroup_is_root(memcg)) - return 0; retry: if (consume_stock(memcg, nr_pages)) return 0; @@ -2762,6 +2760,15 @@ done_restock: return 0; } +static inline int try_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, + unsigned int nr_pages) +{ + if (mem_cgroup_is_root(memcg)) + return 0; + + return try_charge_memcg(memcg, gfp_mask, nr_pages); +} + #if defined(CONFIG_MEMCG_KMEM) || defined(CONFIG_MMU) static void cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages) { @@ -2997,7 +3004,7 @@ static int obj_cgroup_charge_pages(struc memcg = get_mem_cgroup_from_objcg(objcg); - ret = try_charge(memcg, gfp, nr_pages); + ret = try_charge_memcg(memcg, gfp, nr_pages); if (ret) goto out; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 085/192] mm: memcontrol: fix page charging in page replacement 2021-06-29 2:32 incoming Andrew Morton ` (83 preceding siblings ...) 2021-06-29 2:37 ` [patch 084/192] mm: memcontrol: fix root_mem_cgroup charging Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 086/192] mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm Andrew Morton ` (106 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: fix page charging in page replacement Patch series "memcontrol code cleanup and simplification", v3. This patch (of 8): The pages aren't accounted at the root level, so do not charge the page to the root memcg in page replacement. Although we do not display the value (mem_cgroup_usage) so there shouldn't be any actual problem, but there is a WARN_ON_ONCE in the page_counter_cancel(). Who knows if it will trigger? So it is better to fix it. Link: https://lkml.kernel.org/r/20210417043538.9793-1-songmuchun@bytedance.com Link: https://lkml.kernel.org/r/20210417043538.9793-2-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) --- a/mm/memcontrol.c~mm-memcontrol-fix-page-charging-in-page-replacement +++ a/mm/memcontrol.c @@ -6984,9 +6984,11 @@ void mem_cgroup_migrate(struct page *old /* Force-charge the new page. The old one will be freed soon */ nr_pages = thp_nr_pages(newpage); - page_counter_charge(&memcg->memory, nr_pages); - if (do_memsw_account()) - page_counter_charge(&memcg->memsw, nr_pages); + if (!mem_cgroup_is_root(memcg)) { + page_counter_charge(&memcg->memory, nr_pages); + if (do_memsw_account()) + page_counter_charge(&memcg->memsw, nr_pages); + } css_get(&memcg->css); commit_charge(newpage, memcg); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 086/192] mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm 2021-06-29 2:32 incoming Andrew Morton ` (84 preceding siblings ...) 2021-06-29 2:37 ` [patch 085/192] mm: memcontrol: fix page charging in page replacement Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 087/192] mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec Andrew Morton ` (105 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm When mm is NULL, we do not need to hold rcu lock and call css_tryget for the root memcg. And we also do not need to check !mm in every loop of while. So bail out early when !mm. Link: https://lkml.kernel.org/r/20210417043538.9793-3-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) --- a/mm/memcontrol.c~mm-memcontrol-bail-out-early-when-mm-in-get_mem_cgroup_from_mm +++ a/mm/memcontrol.c @@ -919,20 +919,23 @@ struct mem_cgroup *get_mem_cgroup_from_m if (mem_cgroup_disabled()) return NULL; + /* + * Page cache insertions can happen without an + * actual mm context, e.g. during disk probing + * on boot, loopback IO, acct() writes etc. + * + * No need to css_get on root memcg as the reference + * counting is disabled on the root level in the + * cgroup core. See CSS_NO_REF. + */ + if (unlikely(!mm)) + return root_mem_cgroup; + rcu_read_lock(); do { - /* - * Page cache insertions can happen without an - * actual mm context, e.g. during disk probing - * on boot, loopback IO, acct() writes etc. - */ - if (unlikely(!mm)) + memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); + if (unlikely(!memcg)) memcg = root_mem_cgroup; - else { - memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); - if (unlikely(!memcg)) - memcg = root_mem_cgroup; - } } while (!css_tryget(&memcg->css)); rcu_read_unlock(); return memcg; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 087/192] mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec 2021-06-29 2:32 incoming Andrew Morton ` (85 preceding siblings ...) 2021-06-29 2:37 ` [patch 086/192] mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 088/192] mm: memcontrol: simplify lruvec_holds_page_lru_lock Andrew Morton ` (104 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec All the callers of mem_cgroup_page_lruvec() just pass page_pgdat(page) as the 2nd parameter to it (except isolate_migratepages_block()). But for isolate_migratepages_block(), the page_pgdat(page) is also equal to the local variable of @pgdat. So mem_cgroup_page_lruvec() do not need the pgdat parameter. Just remove it to simplify the code. Link: https://lkml.kernel.org/r/20210417043538.9793-4-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/memcontrol.h | 10 +++++----- mm/compaction.c | 2 +- mm/memcontrol.c | 9 +++------ mm/swap.c | 2 +- mm/workingset.c | 2 +- 5 files changed, 11 insertions(+), 14 deletions(-) --- a/include/linux/memcontrol.h~mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec +++ a/include/linux/memcontrol.h @@ -743,13 +743,12 @@ out: /** * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page * @page: the page - * @pgdat: pgdat of the page * * This function relies on page->mem_cgroup being stable. */ -static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, - struct pglist_data *pgdat) +static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page) { + pg_data_t *pgdat = page_pgdat(page); struct mem_cgroup *memcg = page_memcg(page); VM_WARN_ON_ONCE_PAGE(!memcg && !mem_cgroup_disabled(), page); @@ -1221,9 +1220,10 @@ static inline struct lruvec *mem_cgroup_ return &pgdat->__lruvec; } -static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, - struct pglist_data *pgdat) +static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page) { + pg_data_t *pgdat = page_pgdat(page); + return &pgdat->__lruvec; } --- a/mm/compaction.c~mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec +++ a/mm/compaction.c @@ -1028,7 +1028,7 @@ isolate_migratepages_block(struct compac if (!TestClearPageLRU(page)) goto isolate_fail_put; - lruvec = mem_cgroup_page_lruvec(page, pgdat); + lruvec = mem_cgroup_page_lruvec(page); /* If we already hold the lock, we can skip some rechecking */ if (lruvec != locked) { --- a/mm/memcontrol.c~mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec +++ a/mm/memcontrol.c @@ -1199,9 +1199,8 @@ void lruvec_memcg_debug(struct lruvec *l struct lruvec *lock_page_lruvec(struct page *page) { struct lruvec *lruvec; - struct pglist_data *pgdat = page_pgdat(page); - lruvec = mem_cgroup_page_lruvec(page, pgdat); + lruvec = mem_cgroup_page_lruvec(page); spin_lock(&lruvec->lru_lock); lruvec_memcg_debug(lruvec, page); @@ -1212,9 +1211,8 @@ struct lruvec *lock_page_lruvec(struct p struct lruvec *lock_page_lruvec_irq(struct page *page) { struct lruvec *lruvec; - struct pglist_data *pgdat = page_pgdat(page); - lruvec = mem_cgroup_page_lruvec(page, pgdat); + lruvec = mem_cgroup_page_lruvec(page); spin_lock_irq(&lruvec->lru_lock); lruvec_memcg_debug(lruvec, page); @@ -1225,9 +1223,8 @@ struct lruvec *lock_page_lruvec_irq(stru struct lruvec *lock_page_lruvec_irqsave(struct page *page, unsigned long *flags) { struct lruvec *lruvec; - struct pglist_data *pgdat = page_pgdat(page); - lruvec = mem_cgroup_page_lruvec(page, pgdat); + lruvec = mem_cgroup_page_lruvec(page); spin_lock_irqsave(&lruvec->lru_lock, *flags); lruvec_memcg_debug(lruvec, page); --- a/mm/swap.c~mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec +++ a/mm/swap.c @@ -313,7 +313,7 @@ void lru_note_cost(struct lruvec *lruvec void lru_note_cost_page(struct page *page) { - lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)), + lru_note_cost(mem_cgroup_page_lruvec(page), page_is_file_lru(page), thp_nr_pages(page)); } --- a/mm/workingset.c~mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec +++ a/mm/workingset.c @@ -408,7 +408,7 @@ void workingset_activation(struct page * memcg = page_memcg_rcu(page); if (!mem_cgroup_disabled() && !memcg) goto out; - lruvec = mem_cgroup_page_lruvec(page, page_pgdat(page)); + lruvec = mem_cgroup_page_lruvec(page); workingset_age_nonresident(lruvec, thp_nr_pages(page)); out: rcu_read_unlock(); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 088/192] mm: memcontrol: simplify lruvec_holds_page_lru_lock 2021-06-29 2:32 incoming Andrew Morton ` (86 preceding siblings ...) 2021-06-29 2:37 ` [patch 087/192] mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:37 ` [patch 089/192] mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec Andrew Morton ` (103 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: simplify lruvec_holds_page_lru_lock We already have a helper lruvec_memcg() to get the memcg from lruvec, we do not need to do it ourselves in the lruvec_holds_page_lru_lock(). So use lruvec_memcg() instead. And if mem_cgroup_disabled() returns false, the page_memcg(page) (the LRU pages) cannot be NULL. So remove the odd logic of "memcg = page_memcg(page) ? : root_mem_cgroup". And use lruvec_pgdat to simplify the code. We can have a single definition for this function that works for !CONFIG_MEMCG, CONFIG_MEMCG + mem_cgroup_disabled() and CONFIG_MEMCG. Link: https://lkml.kernel.org/r/20210417043538.9793-5-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/memcontrol.h | 31 +++++++------------------------ 1 file changed, 7 insertions(+), 24 deletions(-) --- a/include/linux/memcontrol.h~mm-memcontrol-simplify-lruvec_holds_page_lru_lock +++ a/include/linux/memcontrol.h @@ -755,22 +755,6 @@ static inline struct lruvec *mem_cgroup_ return mem_cgroup_lruvec(memcg, pgdat); } -static inline bool lruvec_holds_page_lru_lock(struct page *page, - struct lruvec *lruvec) -{ - pg_data_t *pgdat = page_pgdat(page); - const struct mem_cgroup *memcg; - struct mem_cgroup_per_node *mz; - - if (mem_cgroup_disabled()) - return lruvec == &pgdat->__lruvec; - - mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); - memcg = page_memcg(page) ? : root_mem_cgroup; - - return lruvec->pgdat == pgdat && mz->memcg == memcg; -} - struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); @@ -1227,14 +1211,6 @@ static inline struct lruvec *mem_cgroup_ return &pgdat->__lruvec; } -static inline bool lruvec_holds_page_lru_lock(struct page *page, - struct lruvec *lruvec) -{ - pg_data_t *pgdat = page_pgdat(page); - - return lruvec == &pgdat->__lruvec; -} - static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page) { } @@ -1516,6 +1492,13 @@ static inline void unlock_page_lruvec_ir spin_unlock_irqrestore(&lruvec->lru_lock, flags); } +static inline bool lruvec_holds_page_lru_lock(struct page *page, + struct lruvec *lruvec) +{ + return lruvec_pgdat(lruvec) == page_pgdat(page) && + lruvec_memcg(lruvec) == page_memcg(page); +} + /* Don't lock again iff page's lruvec locked */ static inline struct lruvec *relock_page_lruvec_irq(struct page *page, struct lruvec *locked_lruvec) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 089/192] mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec 2021-06-29 2:32 incoming Andrew Morton ` (87 preceding siblings ...) 2021-06-29 2:37 ` [patch 088/192] mm: memcontrol: simplify lruvec_holds_page_lru_lock Andrew Morton @ 2021-06-29 2:37 ` Andrew Morton 2021-06-29 2:38 ` [patch 090/192] mm: memcontrol: simplify the logic of objcg pinning memcg Andrew Morton ` (102 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:37 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec lruvec_holds_page_lru_lock() doesn't check anything about locking and is used to check whether the page belongs to the lruvec. So rename it to page_matches_lruvec(). Link: https://lkml.kernel.org/r/20210417043538.9793-6-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Roman Gushchin <guro@fb.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/memcontrol.h | 8 ++++---- mm/vmscan.c | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) --- a/include/linux/memcontrol.h~mm-memcontrol-rename-lruvec_holds_page_lru_lock-to-page_matches_lruvec +++ a/include/linux/memcontrol.h @@ -1492,8 +1492,8 @@ static inline void unlock_page_lruvec_ir spin_unlock_irqrestore(&lruvec->lru_lock, flags); } -static inline bool lruvec_holds_page_lru_lock(struct page *page, - struct lruvec *lruvec) +/* Test requires a stable page->memcg binding, see page_memcg() */ +static inline bool page_matches_lruvec(struct page *page, struct lruvec *lruvec) { return lruvec_pgdat(lruvec) == page_pgdat(page) && lruvec_memcg(lruvec) == page_memcg(page); @@ -1504,7 +1504,7 @@ static inline struct lruvec *relock_page struct lruvec *locked_lruvec) { if (locked_lruvec) { - if (lruvec_holds_page_lru_lock(page, locked_lruvec)) + if (page_matches_lruvec(page, locked_lruvec)) return locked_lruvec; unlock_page_lruvec_irq(locked_lruvec); @@ -1518,7 +1518,7 @@ static inline struct lruvec *relock_page struct lruvec *locked_lruvec, unsigned long *flags) { if (locked_lruvec) { - if (lruvec_holds_page_lru_lock(page, locked_lruvec)) + if (page_matches_lruvec(page, locked_lruvec)) return locked_lruvec; unlock_page_lruvec_irqrestore(locked_lruvec, *flags); --- a/mm/vmscan.c~mm-memcontrol-rename-lruvec_holds_page_lru_lock-to-page_matches_lruvec +++ a/mm/vmscan.c @@ -2063,7 +2063,7 @@ static unsigned noinline_for_stack move_ * All pages were isolated from the same lruvec (and isolation * inhibits memcg migration). */ - VM_BUG_ON_PAGE(!lruvec_holds_page_lru_lock(page, lruvec), page); + VM_BUG_ON_PAGE(!page_matches_lruvec(page, lruvec), page); add_page_to_lru_list(page, lruvec); nr_pages = thp_nr_pages(page); nr_moved += nr_pages; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 090/192] mm: memcontrol: simplify the logic of objcg pinning memcg 2021-06-29 2:32 incoming Andrew Morton ` (88 preceding siblings ...) 2021-06-29 2:37 ` [patch 089/192] mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 091/192] mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock Andrew Morton ` (101 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: simplify the logic of objcg pinning memcg The obj_cgroup_release() and memcg_reparent_objcgs() are serialized by the css_set_lock. We do not need to care about objcg->memcg being released in the process of obj_cgroup_release(). So there is no need to pin memcg before releasing objcg. Remove those pinning logic to simplfy the code. There are only two places that modifies the objcg->memcg. One is the initialization to objcg->memcg in the memcg_online_kmem(), another is objcgs reparenting in the memcg_reparent_objcgs(). It is also impossible for the two to run in parallel. So xchg() is unnecessary and it is enough to use WRITE_ONCE(). Link: https://lkml.kernel.org/r/20210417043538.9793-7-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) --- a/mm/memcontrol.c~mm-memcontrol-simplify-the-logic-of-objcg-pinning-memcg +++ a/mm/memcontrol.c @@ -261,7 +261,6 @@ static void obj_cgroup_uncharge_pages(st static void obj_cgroup_release(struct percpu_ref *ref) { struct obj_cgroup *objcg = container_of(ref, struct obj_cgroup, refcnt); - struct mem_cgroup *memcg; unsigned int nr_bytes; unsigned int nr_pages; unsigned long flags; @@ -291,11 +290,9 @@ static void obj_cgroup_release(struct pe nr_pages = nr_bytes >> PAGE_SHIFT; spin_lock_irqsave(&css_set_lock, flags); - memcg = obj_cgroup_memcg(objcg); if (nr_pages) obj_cgroup_uncharge_pages(objcg, nr_pages); list_del(&objcg->list); - mem_cgroup_put(memcg); spin_unlock_irqrestore(&css_set_lock, flags); percpu_ref_exit(ref); @@ -330,17 +327,12 @@ static void memcg_reparent_objcgs(struct spin_lock_irq(&css_set_lock); - /* Move active objcg to the parent's list */ - xchg(&objcg->memcg, parent); - css_get(&parent->css); - list_add(&objcg->list, &parent->objcg_list); - - /* Move already reparented objcgs to the parent's list */ - list_for_each_entry(iter, &memcg->objcg_list, list) { - css_get(&parent->css); - xchg(&iter->memcg, parent); - css_put(&memcg->css); - } + /* 1) Ready to reparent active objcg. */ + list_add(&objcg->list, &memcg->objcg_list); + /* 2) Reparent active objcg and already reparented objcgs to parent. */ + list_for_each_entry(iter, &memcg->objcg_list, list) + WRITE_ONCE(iter->memcg, parent); + /* 3) Move already reparented objcgs to the parent's list */ list_splice(&memcg->objcg_list, &parent->objcg_list); spin_unlock_irq(&css_set_lock); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 091/192] mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock 2021-06-29 2:32 incoming Andrew Morton ` (89 preceding siblings ...) 2021-06-29 2:38 ` [patch 090/192] mm: memcontrol: simplify the logic of objcg pinning memcg Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 092/192] mm: vmscan: remove noinline_for_stack Andrew Morton ` (100 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock The css_set_lock is used to guard the list of inherited objcgs. So there is no need to uncharge kernel memory under css_set_lock. Just move it out of the lock. Link: https://lkml.kernel.org/r/20210417043538.9793-8-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memcontrol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/memcontrol.c~mm-memcontrol-move-obj_cgroup_uncharge_pages-out-of-css_set_lock +++ a/mm/memcontrol.c @@ -289,9 +289,10 @@ static void obj_cgroup_release(struct pe WARN_ON_ONCE(nr_bytes & (PAGE_SIZE - 1)); nr_pages = nr_bytes >> PAGE_SHIFT; - spin_lock_irqsave(&css_set_lock, flags); if (nr_pages) obj_cgroup_uncharge_pages(objcg, nr_pages); + + spin_lock_irqsave(&css_set_lock, flags); list_del(&objcg->list); spin_unlock_irqrestore(&css_set_lock, flags); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 092/192] mm: vmscan: remove noinline_for_stack 2021-06-29 2:32 incoming Andrew Morton ` (90 preceding siblings ...) 2021-06-29 2:38 ` [patch 091/192] mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 093/192] memcontrol: use flexible-array member Andrew Morton ` (99 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, duanxiongchun, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, songmuchun, torvalds, vdavydov.dev From: Muchun Song <songmuchun@bytedance.com> Subject: mm: vmscan: remove noinline_for_stack The noinline_for_stack is introduced by commit 666356297ec4 ("vmscan: set up pagevec as late as possible in shrink_inactive_list()"), its purpose is to delay the allocation of pagevec as late as possible to save stack memory. But the commit 2bcf88796381 ("mm: take pagevecs off reclaim stack") replace pagevecs by lists of pages_to_free. So we do not need noinline_for_stack, just remove it (let the compiler decide whether to inline). Link: https://lkml.kernel.org/r/20210417043538.9793-9-songmuchun@bytedance.com Signed-off-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Xiongchun Duan <duanxiongchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmscan.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/vmscan.c~mm-vmscan-remove-noinline_for_stack +++ a/mm/vmscan.c @@ -2015,8 +2015,8 @@ static int too_many_isolated(struct pgli * * Returns the number of pages moved to the given lruvec. */ -static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, - struct list_head *list) +static unsigned int move_pages_to_lru(struct lruvec *lruvec, + struct list_head *list) { int nr_pages, nr_moved = 0; LIST_HEAD(pages_to_free); @@ -2096,7 +2096,7 @@ static int current_may_throttle(void) * shrink_inactive_list() is a helper for shrink_node(). It returns the number * of reclaimed pages */ -static noinline_for_stack unsigned long +static unsigned long shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, struct scan_control *sc, enum lru_list lru) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 093/192] memcontrol: use flexible-array member 2021-06-29 2:32 incoming Andrew Morton ` (91 preceding siblings ...) 2021-06-29 2:38 ` [patch 092/192] mm: vmscan: remove noinline_for_stack Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 094/192] loop: use worker per cgroup instead of kworker Andrew Morton ` (98 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, alexander.h.duyck, alexs, guro, hannes, linux-mm, mhocko, mm-commits, richard.weiyang, shakeelb, shy828301, songmuchun, torvalds, wenhui From: wenhuizhang <wenhui@gwmail.gwu.edu> Subject: memcontrol: use flexible-array member Change deprecated zero-length-and-one-element-arrays into flexible array member.Zero-length and one-element arrays detected by Lukas's CodeChecker. Zero/one element arrays cause undefined behaviours if sizeof() used. Link: https://lkml.kernel.org/r/20210518200910.29912-1-wenhui@gwmail.gwu.edu Signed-off-by: wenhuizhang <wenhui@gwmail.gwu.edu> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Roman Gushchin <guro@fb.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Alex Shi <alexs@kernel.org> Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/memcontrol.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/include/linux/memcontrol.h~memcontrol-use-flexible-array-member +++ a/include/linux/memcontrol.h @@ -349,8 +349,7 @@ struct mem_cgroup { struct deferred_split deferred_split_queue; #endif - struct mem_cgroup_per_node *nodeinfo[0]; - /* WARNING: nodeinfo must be the last member here */ + struct mem_cgroup_per_node *nodeinfo[]; }; /* _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 094/192] loop: use worker per cgroup instead of kworker 2021-06-29 2:32 incoming Andrew Morton ` (92 preceding siblings ...) 2021-06-29 2:38 ` [patch 093/192] memcontrol: use flexible-array member Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 095/192] mm: charge active memcg when no mm is set Andrew Morton ` (97 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, axboe, chris, hannes, linux-mm, mhocko, ming.lei, mm-commits, schatzberg.dan, shakeelb, tj, torvalds From: Dan Schatzberg <schatzberg.dan@gmail.com> Subject: loop: use worker per cgroup instead of kworker Patch series "Charge loop device i/o to issuing cgroup", v14. The loop device runs all i/o to the backing file on a separate kworker thread which results in all i/o being charged to the root cgroup. This allows a loop device to be used to trivially bypass resource limits and other policy. This patch series fixes this gap in accounting. A simple script to demonstrate this behavior on cgroupv2 machine: ''' #!/bin/bash set -e CGROUP=/sys/fs/cgroup/test.slice LOOP_DEV=/dev/loop0 if [[ ! -d $CGROUP ]] then sudo mkdir $CGROUP fi grep oom_kill $CGROUP/memory.events # Set a memory limit, write more than that limit to tmpfs -> OOM kill sudo unshare -m bash -c " echo \$\$ > $CGROUP/cgroup.procs; echo 0 > $CGROUP/memory.swap.max; echo 64M > $CGROUP/memory.max; mount -t tmpfs -o size=512m tmpfs /tmp; dd if=/dev/zero of=/tmp/file bs=1M count=256" || true grep oom_kill $CGROUP/memory.events # Set a memory limit, write more than that limit through loopback # device -> no OOM kill sudo unshare -m bash -c " echo \$\$ > $CGROUP/cgroup.procs; echo 0 > $CGROUP/memory.swap.max; echo 64M > $CGROUP/memory.max; mount -t tmpfs -o size=512m tmpfs /tmp; truncate -s 512m /tmp/backing_file losetup $LOOP_DEV /tmp/backing_file dd if=/dev/zero of=$LOOP_DEV bs=1M count=256; losetup -D $LOOP_DEV" || true grep oom_kill $CGROUP/memory.events ''' Naively charging cgroups could result in priority inversions through the single kworker thread in the case where multiple cgroups are reading/writing to the same loop device. This patch series does some minor modification to the loop driver so that each cgroup can make forward progress independently to avoid this inversion. With this patch series applied, the above script triggers OOM kills when writing through the loop device as expected. This patch (of 3): Existing uses of loop device may have multiple cgroups reading/writing to the same device. Simply charging resources for I/O to the backing file could result in priority inversion where one cgroup gets synchronously blocked, holding up all other I/O to the loop device. In order to avoid this priority inversion, we use a single workqueue where each work item is a "struct loop_worker" which contains a queue of struct loop_cmds to issue. The loop device maintains a tree mapping blk css_id -> loop_worker. This allows each cgroup to independently make forward progress issuing I/O to the backing file. There is also a single queue for I/O associated with the rootcg which can be used in cases of extreme memory shortage where we cannot allocate a loop_worker. The locking for the tree and queues is fairly heavy handed - we acquire a per-loop-device spinlock any time either is accessed. The existing implementation serializes all I/O through a single thread anyways, so I don't believe this is any worse. [colin.king@canonical.com: fixes] Link: https://lkml.kernel.org/r/20210610173944.1203706-1-schatzberg.dan@gmail.com Link: https://lkml.kernel.org/r/20210610173944.1203706-2-schatzberg.dan@gmail.com Signed-off-by: Dan Schatzberg <schatzberg.dan@gmail.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Acked-by: Jens Axboe <axboe@kernel.dk> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Chris Down <chris@chrisdown.name> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/block/loop.c | 209 +++++++++++++++++++++++++++++++++++------ drivers/block/loop.h | 12 +- 2 files changed, 187 insertions(+), 34 deletions(-) --- a/drivers/block/loop.c~loop-use-worker-per-cgroup-instead-of-kworker +++ a/drivers/block/loop.c @@ -71,7 +71,6 @@ #include <linux/writeback.h> #include <linux/completion.h> #include <linux/highmem.h> -#include <linux/kthread.h> #include <linux/splice.h> #include <linux/sysfs.h> #include <linux/miscdevice.h> @@ -84,6 +83,8 @@ #include <linux/uaccess.h> +#define LOOP_IDLE_WORKER_TIMEOUT (60 * HZ) + static DEFINE_IDR(loop_index_idr); static DEFINE_MUTEX(loop_ctl_mutex); @@ -921,27 +922,95 @@ static void loop_config_discard(struct l q->limits.discard_alignment = 0; } -static void loop_unprepare_queue(struct loop_device *lo) +struct loop_worker { + struct rb_node rb_node; + struct work_struct work; + struct list_head cmd_list; + struct list_head idle_list; + struct loop_device *lo; + struct cgroup_subsys_state *css; + unsigned long last_ran_at; +}; + +static void loop_workfn(struct work_struct *work); +static void loop_rootcg_workfn(struct work_struct *work); +static void loop_free_idle_workers(struct timer_list *timer); + +#ifdef CONFIG_BLK_CGROUP +static inline int queue_on_root_worker(struct cgroup_subsys_state *css) { - kthread_flush_worker(&lo->worker); - kthread_stop(lo->worker_task); + return !css || css == blkcg_root_css; } - -static int loop_kthread_worker_fn(void *worker_ptr) +#else +static inline int queue_on_root_worker(struct cgroup_subsys_state *css) { - current->flags |= PF_LOCAL_THROTTLE | PF_MEMALLOC_NOIO; - return kthread_worker_fn(worker_ptr); + return !css; } +#endif -static int loop_prepare_queue(struct loop_device *lo) +static void loop_queue_work(struct loop_device *lo, struct loop_cmd *cmd) { - kthread_init_worker(&lo->worker); - lo->worker_task = kthread_run(loop_kthread_worker_fn, - &lo->worker, "loop%d", lo->lo_number); - if (IS_ERR(lo->worker_task)) - return -ENOMEM; - set_user_nice(lo->worker_task, MIN_NICE); - return 0; + struct rb_node **node = &(lo->worker_tree.rb_node), *parent = NULL; + struct loop_worker *cur_worker, *worker = NULL; + struct work_struct *work; + struct list_head *cmd_list; + + spin_lock_irq(&lo->lo_work_lock); + + if (queue_on_root_worker(cmd->css)) + goto queue_work; + + node = &lo->worker_tree.rb_node; + + while (*node) { + parent = *node; + cur_worker = container_of(*node, struct loop_worker, rb_node); + if (cur_worker->css == cmd->css) { + worker = cur_worker; + break; + } else if ((long)cur_worker->css < (long)cmd->css) { + node = &(*node)->rb_left; + } else { + node = &(*node)->rb_right; + } + } + if (worker) + goto queue_work; + + worker = kzalloc(sizeof(struct loop_worker), GFP_NOWAIT | __GFP_NOWARN); + /* + * In the event we cannot allocate a worker, just queue on the + * rootcg worker + */ + if (!worker) + goto queue_work; + + worker->css = cmd->css; + css_get(worker->css); + INIT_WORK(&worker->work, loop_workfn); + INIT_LIST_HEAD(&worker->cmd_list); + INIT_LIST_HEAD(&worker->idle_list); + worker->lo = lo; + rb_link_node(&worker->rb_node, parent, node); + rb_insert_color(&worker->rb_node, &lo->worker_tree); +queue_work: + if (worker) { + /* + * We need to remove from the idle list here while + * holding the lock so that the idle timer doesn't + * free the worker + */ + if (!list_empty(&worker->idle_list)) + list_del_init(&worker->idle_list); + work = &worker->work; + cmd_list = &worker->cmd_list; + } else { + work = &lo->rootcg_work; + cmd_list = &lo->rootcg_cmd_list; + } + list_add_tail(&cmd->list_entry, cmd_list); + queue_work(lo->workqueue, work); + spin_unlock_irq(&lo->lo_work_lock); } static void loop_update_rotational(struct loop_device *lo) @@ -1127,12 +1196,23 @@ static int loop_configure(struct loop_de !file->f_op->write_iter) lo->lo_flags |= LO_FLAGS_READ_ONLY; - error = loop_prepare_queue(lo); - if (error) + lo->workqueue = alloc_workqueue("loop%d", + WQ_UNBOUND | WQ_FREEZABLE, + 0, + lo->lo_number); + if (!lo->workqueue) { + error = -ENOMEM; goto out_unlock; + } set_disk_ro(lo->lo_disk, (lo->lo_flags & LO_FLAGS_READ_ONLY) != 0); + INIT_WORK(&lo->rootcg_work, loop_rootcg_workfn); + INIT_LIST_HEAD(&lo->rootcg_cmd_list); + INIT_LIST_HEAD(&lo->idle_worker_list); + lo->worker_tree = RB_ROOT; + timer_setup(&lo->timer, loop_free_idle_workers, + TIMER_DEFERRABLE); lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO; lo->lo_device = bdev; lo->lo_backing_file = file; @@ -1200,6 +1280,7 @@ static int __loop_clr_fd(struct loop_dev int err = 0; bool partscan = false; int lo_number; + struct loop_worker *pos, *worker; mutex_lock(&lo->lo_mutex); if (WARN_ON_ONCE(lo->lo_state != Lo_rundown)) { @@ -1219,6 +1300,18 @@ static int __loop_clr_fd(struct loop_dev /* freeze request queue during the transition */ blk_mq_freeze_queue(lo->lo_queue); + destroy_workqueue(lo->workqueue); + spin_lock_irq(&lo->lo_work_lock); + list_for_each_entry_safe(worker, pos, &lo->idle_worker_list, + idle_list) { + list_del(&worker->idle_list); + rb_erase(&worker->rb_node, &lo->worker_tree); + css_put(worker->css); + kfree(worker); + } + spin_unlock_irq(&lo->lo_work_lock); + del_timer_sync(&lo->timer); + spin_lock_irq(&lo->lo_lock); lo->lo_backing_file = NULL; spin_unlock_irq(&lo->lo_lock); @@ -1255,7 +1348,6 @@ static int __loop_clr_fd(struct loop_dev partscan = lo->lo_flags & LO_FLAGS_PARTSCAN && bdev; lo_number = lo->lo_number; - loop_unprepare_queue(lo); out_unlock: mutex_unlock(&lo->lo_mutex); if (partscan) { @@ -2015,7 +2107,7 @@ static blk_status_t loop_queue_rq(struct } else #endif cmd->css = NULL; - kthread_queue_work(&lo->worker, &cmd->work); + loop_queue_work(lo, cmd); return BLK_STS_OK; } @@ -2045,26 +2137,82 @@ static void loop_handle_cmd(struct loop_ } } -static void loop_queue_work(struct kthread_work *work) +static void loop_set_timer(struct loop_device *lo) +{ + timer_reduce(&lo->timer, jiffies + LOOP_IDLE_WORKER_TIMEOUT); +} + +static void loop_process_work(struct loop_worker *worker, + struct list_head *cmd_list, struct loop_device *lo) { - struct loop_cmd *cmd = - container_of(work, struct loop_cmd, work); + int orig_flags = current->flags; + struct loop_cmd *cmd; + + current->flags |= PF_LOCAL_THROTTLE | PF_MEMALLOC_NOIO; + spin_lock_irq(&lo->lo_work_lock); + while (!list_empty(cmd_list)) { + cmd = container_of( + cmd_list->next, struct loop_cmd, list_entry); + list_del(cmd_list->next); + spin_unlock_irq(&lo->lo_work_lock); + + loop_handle_cmd(cmd); + cond_resched(); + + spin_lock_irq(&lo->lo_work_lock); + } - loop_handle_cmd(cmd); + /* + * We only add to the idle list if there are no pending cmds + * *and* the worker will not run again which ensures that it + * is safe to free any worker on the idle list + */ + if (worker && !work_pending(&worker->work)) { + worker->last_ran_at = jiffies; + list_add_tail(&worker->idle_list, &lo->idle_worker_list); + loop_set_timer(lo); + } + spin_unlock_irq(&lo->lo_work_lock); + current->flags = orig_flags; } -static int loop_init_request(struct blk_mq_tag_set *set, struct request *rq, - unsigned int hctx_idx, unsigned int numa_node) +static void loop_workfn(struct work_struct *work) { - struct loop_cmd *cmd = blk_mq_rq_to_pdu(rq); + struct loop_worker *worker = + container_of(work, struct loop_worker, work); + loop_process_work(worker, &worker->cmd_list, worker->lo); +} - kthread_init_work(&cmd->work, loop_queue_work); - return 0; +static void loop_rootcg_workfn(struct work_struct *work) +{ + struct loop_device *lo = + container_of(work, struct loop_device, rootcg_work); + loop_process_work(NULL, &lo->rootcg_cmd_list, lo); +} + +static void loop_free_idle_workers(struct timer_list *timer) +{ + struct loop_device *lo = container_of(timer, struct loop_device, timer); + struct loop_worker *pos, *worker; + + spin_lock_irq(&lo->lo_work_lock); + list_for_each_entry_safe(worker, pos, &lo->idle_worker_list, + idle_list) { + if (time_is_after_jiffies(worker->last_ran_at + + LOOP_IDLE_WORKER_TIMEOUT)) + break; + list_del(&worker->idle_list); + rb_erase(&worker->rb_node, &lo->worker_tree); + css_put(worker->css); + kfree(worker); + } + if (!list_empty(&lo->idle_worker_list)) + loop_set_timer(lo); + spin_unlock_irq(&lo->lo_work_lock); } static const struct blk_mq_ops loop_mq_ops = { .queue_rq = loop_queue_rq, - .init_request = loop_init_request, .complete = lo_complete_rq, }; @@ -2153,6 +2301,7 @@ static int loop_add(struct loop_device * mutex_init(&lo->lo_mutex); lo->lo_number = i; spin_lock_init(&lo->lo_lock); + spin_lock_init(&lo->lo_work_lock); disk->major = LOOP_MAJOR; disk->first_minor = i << part_shift; disk->fops = &lo_fops; --- a/drivers/block/loop.h~loop-use-worker-per-cgroup-instead-of-kworker +++ a/drivers/block/loop.h @@ -14,7 +14,6 @@ #include <linux/blk-mq.h> #include <linux/spinlock.h> #include <linux/mutex.h> -#include <linux/kthread.h> #include <uapi/linux/loop.h> /* Possible states of device */ @@ -55,8 +54,13 @@ struct loop_device { spinlock_t lo_lock; int lo_state; - struct kthread_worker worker; - struct task_struct *worker_task; + spinlock_t lo_work_lock; + struct workqueue_struct *workqueue; + struct work_struct rootcg_work; + struct list_head rootcg_cmd_list; + struct list_head idle_worker_list; + struct rb_root worker_tree; + struct timer_list timer; bool use_dio; bool sysfs_inited; @@ -67,7 +71,7 @@ struct loop_device { }; struct loop_cmd { - struct kthread_work work; + struct list_head list_entry; bool use_aio; /* use AIO interface to handle I/O */ atomic_t ref; /* only for aio */ long ret; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 095/192] mm: charge active memcg when no mm is set 2021-06-29 2:32 incoming Andrew Morton ` (93 preceding siblings ...) 2021-06-29 2:38 ` [patch 094/192] loop: use worker per cgroup instead of kworker Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 096/192] loop: charge i/o to mem and blk cg Andrew Morton ` (96 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, axboe, chris, hannes, linux-mm, mhocko, ming.lei, mkoutny, mm-commits, schatzberg.dan, shakeelb, tj, torvalds From: Dan Schatzberg <schatzberg.dan@gmail.com> Subject: mm: charge active memcg when no mm is set set_active_memcg() worked for kernel allocations but was silently ignored for user pages. This patch establishes a precedence order for who gets charged: 1. If there is a memcg associated with the page already, that memcg is charged. This happens during swapin. 2. If an explicit mm is passed, mm->memcg is charged. This happens during page faults, which can be triggered in remote VMs (eg gup). 3. Otherwise consult the current process context. If there is an active_memcg, use that. Otherwise, current->mm->memcg. Previously, if a NULL mm was passed to mem_cgroup_charge (case 3) it would always charge the root cgroup. Now it looks up the active_memcg first (falling back to charging the root cgroup if not set). Link: https://lkml.kernel.org/r/20210610173944.1203706-3-schatzberg.dan@gmail.com Signed-off-by: Dan Schatzberg <schatzberg.dan@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Chris Down <chris@chrisdown.name> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Michal Koutný <mkoutny@suse.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Ming Lei <ming.lei@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/filemap.c | 2 +- mm/memcontrol.c | 41 +++++++++++++++++++++++++++-------------- mm/shmem.c | 4 ++-- 3 files changed, 30 insertions(+), 17 deletions(-) --- a/mm/filemap.c~mm-charge-active-memcg-when-no-mm-is-set +++ a/mm/filemap.c @@ -872,7 +872,7 @@ noinline int __add_to_page_cache_locked( page->index = offset; if (!huge) { - error = mem_cgroup_charge(page, current->mm, gfp); + error = mem_cgroup_charge(page, NULL, gfp); if (error) goto error; charged = true; --- a/mm/memcontrol.c~mm-charge-active-memcg-when-no-mm-is-set +++ a/mm/memcontrol.c @@ -897,13 +897,24 @@ struct mem_cgroup *mem_cgroup_from_task( } EXPORT_SYMBOL(mem_cgroup_from_task); +static __always_inline struct mem_cgroup *active_memcg(void) +{ + if (in_interrupt()) + return this_cpu_read(int_active_memcg); + else + return current->active_memcg; +} + /** * get_mem_cgroup_from_mm: Obtain a reference on given mm_struct's memcg. * @mm: mm from which memcg should be extracted. It can be NULL. * - * Obtain a reference on mm->memcg and returns it if successful. Otherwise - * root_mem_cgroup is returned. However if mem_cgroup is disabled, NULL is - * returned. + * Obtain a reference on mm->memcg and returns it if successful. If mm + * is NULL, then the memcg is chosen as follows: + * 1) The active memcg, if set. + * 2) current->mm->memcg, if available + * 3) root memcg + * If mem_cgroup is disabled, NULL is returned. */ struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) { @@ -921,8 +932,17 @@ struct mem_cgroup *get_mem_cgroup_from_m * counting is disabled on the root level in the * cgroup core. See CSS_NO_REF. */ - if (unlikely(!mm)) - return root_mem_cgroup; + if (unlikely(!mm)) { + memcg = active_memcg(); + if (unlikely(memcg)) { + /* remote memcg must hold a ref */ + css_get(&memcg->css); + return memcg; + } + mm = current->mm; + if (unlikely(!mm)) + return root_mem_cgroup; + } rcu_read_lock(); do { @@ -935,14 +955,6 @@ struct mem_cgroup *get_mem_cgroup_from_m } EXPORT_SYMBOL(get_mem_cgroup_from_mm); -static __always_inline struct mem_cgroup *active_memcg(void) -{ - if (in_interrupt()) - return this_cpu_read(int_active_memcg); - else - return current->active_memcg; -} - static __always_inline bool memcg_kmem_bypass(void) { /* Allow remote memcg charging from any context. */ @@ -6711,7 +6723,8 @@ out: * @gfp_mask: reclaim mode * * Try to charge @page to the memcg that @mm belongs to, reclaiming - * pages according to @gfp_mask if necessary. + * pages according to @gfp_mask if necessary. if @mm is NULL, try to + * charge to the active memcg. * * Do not use this for pages allocated for swapin. * --- a/mm/shmem.c~mm-charge-active-memcg-when-no-mm-is-set +++ a/mm/shmem.c @@ -1695,7 +1695,7 @@ static int shmem_swapin_page(struct inod { struct address_space *mapping = inode->i_mapping; struct shmem_inode_info *info = SHMEM_I(inode); - struct mm_struct *charge_mm = vma ? vma->vm_mm : current->mm; + struct mm_struct *charge_mm = vma ? vma->vm_mm : NULL; struct swap_info_struct *si; struct page *page = NULL; swp_entry_t swap; @@ -1828,7 +1828,7 @@ repeat: } sbinfo = SHMEM_SB(inode->i_sb); - charge_mm = vma ? vma->vm_mm : current->mm; + charge_mm = vma ? vma->vm_mm : NULL; page = pagecache_get_page(mapping, index, FGP_ENTRY | FGP_HEAD | FGP_LOCK, 0); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 096/192] loop: charge i/o to mem and blk cg 2021-06-29 2:32 incoming Andrew Morton ` (94 preceding siblings ...) 2021-06-29 2:38 ` [patch 095/192] mm: charge active memcg when no mm is set Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 097/192] mm: memcontrol: remove trailing semicolon in macros Andrew Morton ` (95 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, axboe, chris, hannes, linux-mm, mhocko, ming.lei, mm-commits, schatzberg.dan, shakeelb, tj, torvalds From: Dan Schatzberg <schatzberg.dan@gmail.com> Subject: loop: charge i/o to mem and blk cg The current code only associates with the existing blkcg when aio is used to access the backing file. This patch covers all types of i/o to the backing file and also associates the memcg so if the backing file is on tmpfs, memory is charged appropriately. This patch also exports cgroup_get_e_css and int_active_memcg so it can be used by the loop module. Link: https://lkml.kernel.org/r/20210610173944.1203706-4-schatzberg.dan@gmail.com Signed-off-by: Dan Schatzberg <schatzberg.dan@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Jens Axboe <axboe@kernel.dk> Cc: Chris Down <chris@chrisdown.name> Cc: Michal Hocko <mhocko@suse.com> Cc: Ming Lei <ming.lei@redhat.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/block/loop.c | 61 +++++++++++++++++++++++------------ drivers/block/loop.h | 3 + include/linux/memcontrol.h | 6 +++ kernel/cgroup/cgroup.c | 1 mm/memcontrol.c | 1 5 files changed, 51 insertions(+), 21 deletions(-) --- a/drivers/block/loop.c~loop-charge-i-o-to-mem-and-blk-cg +++ a/drivers/block/loop.c @@ -78,6 +78,7 @@ #include <linux/uio.h> #include <linux/ioprio.h> #include <linux/blk-cgroup.h> +#include <linux/sched/mm.h> #include "loop.h" @@ -516,8 +517,6 @@ static void lo_rw_aio_complete(struct ki { struct loop_cmd *cmd = container_of(iocb, struct loop_cmd, iocb); - if (cmd->css) - css_put(cmd->css); cmd->ret = ret; lo_rw_aio_do_completion(cmd); } @@ -578,8 +577,6 @@ static int lo_rw_aio(struct loop_device cmd->iocb.ki_complete = lo_rw_aio_complete; cmd->iocb.ki_flags = IOCB_DIRECT; cmd->iocb.ki_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 0); - if (cmd->css) - kthread_associate_blkcg(cmd->css); if (rw == WRITE) ret = call_write_iter(file, &cmd->iocb, &iter); @@ -587,7 +584,6 @@ static int lo_rw_aio(struct loop_device ret = call_read_iter(file, &cmd->iocb, &iter); lo_rw_aio_do_completion(cmd); - kthread_associate_blkcg(NULL); if (ret != -EIOCBQUEUED) cmd->iocb.ki_complete(&cmd->iocb, ret, 0); @@ -928,7 +924,7 @@ struct loop_worker { struct list_head cmd_list; struct list_head idle_list; struct loop_device *lo; - struct cgroup_subsys_state *css; + struct cgroup_subsys_state *blkcg_css; unsigned long last_ran_at; }; @@ -957,7 +953,7 @@ static void loop_queue_work(struct loop_ spin_lock_irq(&lo->lo_work_lock); - if (queue_on_root_worker(cmd->css)) + if (queue_on_root_worker(cmd->blkcg_css)) goto queue_work; node = &lo->worker_tree.rb_node; @@ -965,10 +961,10 @@ static void loop_queue_work(struct loop_ while (*node) { parent = *node; cur_worker = container_of(*node, struct loop_worker, rb_node); - if (cur_worker->css == cmd->css) { + if (cur_worker->blkcg_css == cmd->blkcg_css) { worker = cur_worker; break; - } else if ((long)cur_worker->css < (long)cmd->css) { + } else if ((long)cur_worker->blkcg_css < (long)cmd->blkcg_css) { node = &(*node)->rb_left; } else { node = &(*node)->rb_right; @@ -980,13 +976,18 @@ static void loop_queue_work(struct loop_ worker = kzalloc(sizeof(struct loop_worker), GFP_NOWAIT | __GFP_NOWARN); /* * In the event we cannot allocate a worker, just queue on the - * rootcg worker + * rootcg worker and issue the I/O as the rootcg */ - if (!worker) + if (!worker) { + cmd->blkcg_css = NULL; + if (cmd->memcg_css) + css_put(cmd->memcg_css); + cmd->memcg_css = NULL; goto queue_work; + } - worker->css = cmd->css; - css_get(worker->css); + worker->blkcg_css = cmd->blkcg_css; + css_get(worker->blkcg_css); INIT_WORK(&worker->work, loop_workfn); INIT_LIST_HEAD(&worker->cmd_list); INIT_LIST_HEAD(&worker->idle_list); @@ -1306,7 +1307,7 @@ static int __loop_clr_fd(struct loop_dev idle_list) { list_del(&worker->idle_list); rb_erase(&worker->rb_node, &lo->worker_tree); - css_put(worker->css); + css_put(worker->blkcg_css); kfree(worker); } spin_unlock_irq(&lo->lo_work_lock); @@ -2100,13 +2101,18 @@ static blk_status_t loop_queue_rq(struct } /* always use the first bio's css */ + cmd->blkcg_css = NULL; + cmd->memcg_css = NULL; #ifdef CONFIG_BLK_CGROUP - if (cmd->use_aio && rq->bio && rq->bio->bi_blkg) { - cmd->css = &bio_blkcg(rq->bio)->css; - css_get(cmd->css); - } else + if (rq->bio && rq->bio->bi_blkg) { + cmd->blkcg_css = &bio_blkcg(rq->bio)->css; +#ifdef CONFIG_MEMCG + cmd->memcg_css = + cgroup_get_e_css(cmd->blkcg_css->cgroup, + &memory_cgrp_subsys); +#endif + } #endif - cmd->css = NULL; loop_queue_work(lo, cmd); return BLK_STS_OK; @@ -2118,13 +2124,28 @@ static void loop_handle_cmd(struct loop_ const bool write = op_is_write(req_op(rq)); struct loop_device *lo = rq->q->queuedata; int ret = 0; + struct mem_cgroup *old_memcg = NULL; if (write && (lo->lo_flags & LO_FLAGS_READ_ONLY)) { ret = -EIO; goto failed; } + if (cmd->blkcg_css) + kthread_associate_blkcg(cmd->blkcg_css); + if (cmd->memcg_css) + old_memcg = set_active_memcg( + mem_cgroup_from_css(cmd->memcg_css)); + ret = do_req_filebacked(lo, rq); + + if (cmd->blkcg_css) + kthread_associate_blkcg(NULL); + + if (cmd->memcg_css) { + set_active_memcg(old_memcg); + css_put(cmd->memcg_css); + } failed: /* complete non-aio request */ if (!cmd->use_aio || ret) { @@ -2203,7 +2224,7 @@ static void loop_free_idle_workers(struc break; list_del(&worker->idle_list); rb_erase(&worker->rb_node, &lo->worker_tree); - css_put(worker->css); + css_put(worker->blkcg_css); kfree(worker); } if (!list_empty(&lo->idle_worker_list)) --- a/drivers/block/loop.h~loop-charge-i-o-to-mem-and-blk-cg +++ a/drivers/block/loop.h @@ -77,7 +77,8 @@ struct loop_cmd { long ret; struct kiocb iocb; struct bio_vec *bvec; - struct cgroup_subsys_state *css; + struct cgroup_subsys_state *blkcg_css; + struct cgroup_subsys_state *memcg_css; }; /* Support for loadable transfer modules */ --- a/include/linux/memcontrol.h~loop-charge-i-o-to-mem-and-blk-cg +++ a/include/linux/memcontrol.h @@ -1230,6 +1230,12 @@ static inline struct mem_cgroup *get_mem return NULL; } +static inline +struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css) +{ + return NULL; +} + static inline void mem_cgroup_put(struct mem_cgroup *memcg) { } --- a/kernel/cgroup/cgroup.c~loop-charge-i-o-to-mem-and-blk-cg +++ a/kernel/cgroup/cgroup.c @@ -577,6 +577,7 @@ out_unlock: rcu_read_unlock(); return css; } +EXPORT_SYMBOL_GPL(cgroup_get_e_css); static void cgroup_get_live(struct cgroup *cgrp) { --- a/mm/memcontrol.c~loop-charge-i-o-to-mem-and-blk-cg +++ a/mm/memcontrol.c @@ -78,6 +78,7 @@ struct mem_cgroup *root_mem_cgroup __rea /* Active memory cgroup to use from an interrupt context */ DEFINE_PER_CPU(struct mem_cgroup *, int_active_memcg); +EXPORT_PER_CPU_SYMBOL_GPL(int_active_memcg); /* Socket memory accounting disabled? */ static bool cgroup_memory_nosocket; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 097/192] mm: memcontrol: remove trailing semicolon in macros 2021-06-29 2:32 incoming Andrew Morton ` (95 preceding siblings ...) 2021-06-29 2:38 ` [patch 096/192] loop: charge i/o to mem and blk cg Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 098/192] perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC Andrew Morton ` (94 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, denghuilong, guro, hannes, linux-mm, mhocko, mm-commits, shakeelb, torvalds From: Huilong Deng <denghuilong@cdjrlc.com> Subject: mm: memcontrol: remove trailing semicolon in macros Macros should not use a trailing semicolon. Link: https://lkml.kernel.org/r/20210614091530.22117-1-denghuilong@cdjrlc.com Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Roman Gushchin <guro@fb.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/memcontrol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/memcontrol.h~mm-memcontrol-remove-trailing-semicolon-in-macros +++ a/include/linux/memcontrol.h @@ -192,7 +192,7 @@ enum memcg_kmem_state { struct memcg_padding { char x[0]; } ____cacheline_internodealigned_in_smp; -#define MEMCG_PADDING(name) struct memcg_padding name; +#define MEMCG_PADDING(name) struct memcg_padding name #else #define MEMCG_PADDING(name) #endif _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 098/192] perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC 2021-06-29 2:32 incoming Andrew Morton ` (96 preceding siblings ...) 2021-06-29 2:38 ` [patch 097/192] mm: memcontrol: remove trailing semicolon in macros Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 099/192] binfmt: remove in-tree usage of MAP_EXECUTABLE Andrew Morton ` (93 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: acme, akpm, alexander.shishkin, bp, catalin.marinas, david, dzickus, ebiederm, feng.tang, gerg, hpa, jolsa, keescook, Kevin.Brodsky, linux-mm, mark.rutland, mhocko, mingo, mm-commits, namhyung, peterz, rppt, tglx, torvalds, viro From: David Hildenbrand <david@redhat.com> Subject: perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC Patch series "perf/binfmt/mm: remove in-tree usage of MAP_EXECUTABLE". Stumbling over the history of MAP_EXECUTABLE, I noticed that we still have some in-tree users that we can get rid of. This patch (of 3): Before commit e9714acf8c43 ("mm: kill vma flag VM_EXECUTABLE and mm->num_exe_file_vmas"), VM_EXECUTABLE indicated MAP_EXECUTABLE. MAP_EXECUTABLE is nowadays essentially ignored by the kernel and does not relate to VM_MAYEXEC. Link: https://lkml.kernel.org/r/20210421093453.6904-1-david@redhat.com Link: https://lkml.kernel.org/r/20210421093453.6904-2-david@redhat.com Fixes: f972eb63b100 ("perf: Pass protection and flags bits through mmap2 interface") Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Kevin Brodsky <Kevin.Brodsky@arm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Don Zickus <dzickus@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/events/core.c | 2 -- 1 file changed, 2 deletions(-) --- a/kernel/events/core.c~perf-map_executable-does-not-indicate-vm_mayexec +++ a/kernel/events/core.c @@ -8301,8 +8301,6 @@ static void perf_event_mmap_event(struct if (vma->vm_flags & VM_DENYWRITE) flags |= MAP_DENYWRITE; - if (vma->vm_flags & VM_MAYEXEC) - flags |= MAP_EXECUTABLE; if (vma->vm_flags & VM_LOCKED) flags |= MAP_LOCKED; if (is_vm_hugetlb_page(vma)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 099/192] binfmt: remove in-tree usage of MAP_EXECUTABLE 2021-06-29 2:32 incoming Andrew Morton ` (97 preceding siblings ...) 2021-06-29 2:38 ` [patch 098/192] perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 100/192] mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() Andrew Morton ` (92 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: acme, akpm, alexander.shishkin, bp, catalin.marinas, david, dzickus, ebiederm, feng.tang, gerg, hpa, jolsa, keescook, Kevin.Brodsky, linux-mm, mark.rutland, mhocko, mingo, mm-commits, namhyung, peterz, rppt, tglx, torvalds, viro From: David Hildenbrand <david@redhat.com> Subject: binfmt: remove in-tree usage of MAP_EXECUTABLE Ever since commit e9714acf8c43 ("mm: kill vma flag VM_EXECUTABLE and mm->num_exe_file_vmas"), VM_EXECUTABLE is gone and MAP_EXECUTABLE is essentially completely ignored. Let's remove all usage of MAP_EXECUTABLE. [akpm@linux-foundation.org: fix blooper in fs/binfmt_aout.c. per David] Link: https://lkml.kernel.org/r/20210421093453.6904-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kevin Brodsky <Kevin.Brodsky@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/x86/ia32/ia32_aout.c | 4 ++-- fs/binfmt_aout.c | 4 ++-- fs/binfmt_elf.c | 2 +- fs/binfmt_elf_fdpic.c | 11 ++--------- fs/binfmt_flat.c | 2 +- 5 files changed, 8 insertions(+), 15 deletions(-) --- a/arch/x86/ia32/ia32_aout.c~binfmt-remove-in-tree-usage-of-map_executable +++ a/arch/x86/ia32/ia32_aout.c @@ -203,7 +203,7 @@ static int load_aout_binary(struct linux error = vm_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, PROT_READ | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | - MAP_EXECUTABLE | MAP_32BIT, + MAP_32BIT, fd_offset); if (error != N_TXTADDR(ex)) @@ -212,7 +212,7 @@ static int load_aout_binary(struct linux error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | - MAP_EXECUTABLE | MAP_32BIT, + MAP_32BIT, fd_offset + ex.a_text); if (error != N_DATADDR(ex)) return error; --- a/fs/binfmt_aout.c~binfmt-remove-in-tree-usage-of-map_executable +++ a/fs/binfmt_aout.c @@ -222,7 +222,7 @@ static int load_aout_binary(struct linux error = vm_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, PROT_READ | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE, + MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE, fd_offset); if (error != N_TXTADDR(ex)) @@ -230,7 +230,7 @@ static int load_aout_binary(struct linux error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE, + MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE, fd_offset + ex.a_text); if (error != N_DATADDR(ex)) return error; --- a/fs/binfmt_elf.c~binfmt-remove-in-tree-usage-of-map_executable +++ a/fs/binfmt_elf.c @@ -1070,7 +1070,7 @@ out_free_interp: elf_prot = make_prot(elf_ppnt->p_flags, &arch_state, !!interpreter, false); - elf_flags = MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE; + elf_flags = MAP_PRIVATE | MAP_DENYWRITE; vaddr = elf_ppnt->p_vaddr; /* --- a/fs/binfmt_elf_fdpic.c~binfmt-remove-in-tree-usage-of-map_executable +++ a/fs/binfmt_elf_fdpic.c @@ -928,7 +928,7 @@ static int elf_fdpic_map_file_constdisp_ { struct elf32_fdpic_loadseg *seg; struct elf32_phdr *phdr; - unsigned long load_addr, base = ULONG_MAX, top = 0, maddr = 0, mflags; + unsigned long load_addr, base = ULONG_MAX, top = 0, maddr = 0; int loop, ret; load_addr = params->load_addr; @@ -948,12 +948,8 @@ static int elf_fdpic_map_file_constdisp_ } /* allocate one big anon block for everything */ - mflags = MAP_PRIVATE; - if (params->flags & ELF_FDPIC_FLAG_EXECUTABLE) - mflags |= MAP_EXECUTABLE; - maddr = vm_mmap(NULL, load_addr, top - base, - PROT_READ | PROT_WRITE | PROT_EXEC, mflags, 0); + PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE, 0); if (IS_ERR_VALUE(maddr)) return (int) maddr; @@ -1046,9 +1042,6 @@ static int elf_fdpic_map_file_by_direct_ if (phdr->p_flags & PF_X) prot |= PROT_EXEC; flags = MAP_PRIVATE | MAP_DENYWRITE; - if (params->flags & ELF_FDPIC_FLAG_EXECUTABLE) - flags |= MAP_EXECUTABLE; - maddr = 0; switch (params->flags & ELF_FDPIC_FLAG_ARRANGEMENT) { --- a/fs/binfmt_flat.c~binfmt-remove-in-tree-usage-of-map_executable +++ a/fs/binfmt_flat.c @@ -573,7 +573,7 @@ static int load_flat_file(struct linux_b pr_debug("ROM mapping of file (we hope)\n"); textpos = vm_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, - MAP_PRIVATE|MAP_EXECUTABLE, 0); + MAP_PRIVATE, 0); if (!textpos || IS_ERR_VALUE(textpos)) { ret = textpos; if (!textpos) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 100/192] mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() 2021-06-29 2:32 incoming Andrew Morton ` (98 preceding siblings ...) 2021-06-29 2:38 ` [patch 099/192] binfmt: remove in-tree usage of MAP_EXECUTABLE Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 101/192] mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap Andrew Morton ` (91 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: acme, akpm, alexander.shishkin, bp, catalin.marinas, david, dzickus, ebiederm, feng.tang, gerg, hpa, jolsa, keescook, Kevin.Brodsky, linux-mm, mark.rutland, mhocko, mingo, mm-commits, namhyung, peterz, rppt, tglx, torvalds, viro From: David Hildenbrand <david@redhat.com> Subject: mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() Let's also remove masking off MAP_EXECUTABLE from ksys_mmap_pgoff(): the last in-tree occurrence of MAP_EXECUTABLE is now in LEGACY_MAP_MASK, which accepts the flag e.g., for MAP_SHARED_VALIDATE; however, the flag is ignored throughout the kernel now. Add a comment to LEGACY_MAP_MASK stating that MAP_EXECUTABLE is ignored. Link: https://lkml.kernel.org/r/20210421093453.6904-4-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kevin Brodsky <Kevin.Brodsky@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mman.h | 2 ++ mm/mmap.c | 2 +- mm/nommu.c | 2 +- 3 files changed, 4 insertions(+), 2 deletions(-) --- a/include/linux/mman.h~mm-ignore-map_executable-in-ksys_mmap_pgoff +++ a/include/linux/mman.h @@ -31,6 +31,8 @@ /* * The historical set of flags that all mmap implementations implicitly * support when a ->mmap_validate() op is not provided in file_operations. + * + * MAP_EXECUTABLE is completely ignored throughout the kernel. */ #define LEGACY_MAP_MASK (MAP_SHARED \ | MAP_PRIVATE \ --- a/mm/mmap.c~mm-ignore-map_executable-in-ksys_mmap_pgoff +++ a/mm/mmap.c @@ -1633,7 +1633,7 @@ unsigned long ksys_mmap_pgoff(unsigned l return PTR_ERR(file); } - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + flags &= ~MAP_DENYWRITE; retval = vm_mmap_pgoff(file, addr, len, prot, flags, pgoff); out_fput: --- a/mm/nommu.c~mm-ignore-map_executable-in-ksys_mmap_pgoff +++ a/mm/nommu.c @@ -1296,7 +1296,7 @@ unsigned long ksys_mmap_pgoff(unsigned l goto out; } - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + flags &= ~MAP_DENYWRITE; retval = vm_mmap_pgoff(file, addr, len, prot, flags, pgoff); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 101/192] mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap 2021-06-29 2:32 incoming Andrew Morton ` (99 preceding siblings ...) 2021-06-29 2:38 ` [patch 100/192] mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 102/192] mm/mmap: introduce unlock_range() for code cleanup Andrew Morton ` (90 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, david, gmjuareztello, linux-mm, mm-commits, torvalds From: Gonzalo Matias Juarez Tello <gmjuareztello@gmail.com> Subject: mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap Logic of find_vma_intersection() is repeated in __do_munmap(). Also, prev is assigned a value before checking vma->vm_start >= end which might end up on a return statement making that assignment useless. Calling find_vma_intersection() checks that condition and returns NULL if no vma is found, hence only the !vma check is needed in __do_munmap(). Link: https://lkml.kernel.org/r/20210409162129.18313-1-gmjuareztello@gmail.com Signed-off-by: Gonzalo Matias Juarez Tello <gmjuareztello@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mmap.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) --- a/mm/mmap.c~mm-mmapc-logic-of-find_vma_intersection-repeated-in-__do_munmap +++ a/mm/mmap.c @@ -2828,16 +2828,11 @@ int __do_munmap(struct mm_struct *mm, un */ arch_unmap(mm, start, end); - /* Find the first overlapping VMA */ - vma = find_vma(mm, start); + /* Find the first overlapping VMA where start < vma->vm_end */ + vma = find_vma_intersection(mm, start, end); if (!vma) return 0; prev = vma->vm_prev; - /* we have start < vma->vm_end */ - - /* if it doesn't overlap, we have nothing.. */ - if (vma->vm_start >= end) - return 0; /* * If we need to split any vma, do it now to save pain later. _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 102/192] mm/mmap: introduce unlock_range() for code cleanup 2021-06-29 2:32 incoming Andrew Morton ` (100 preceding siblings ...) 2021-06-29 2:38 ` [patch 101/192] mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 103/192] mm/mmap: use find_vma_intersection() in do_mmap() for overlap Andrew Morton ` (89 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, dbueso, Liam.Howlett, linux-mm, mm-commits, torvalds, willy From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/mmap: introduce unlock_range() for code cleanup Both __do_munmap() and exit_mmap() unlock a range of VMAs using almost identical code blocks. Replace both blocks by a static inline function. [akpm@linux-foundation.org: tweak code layout] Link: https://lkml.kernel.org/r/20210510211021.2797427-1-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mmap.c | 39 ++++++++++++++++++++------------------- 1 file changed, 20 insertions(+), 19 deletions(-) --- a/mm/mmap.c~mm-mmap-introduce-unlock_range-for-code-cleanup +++ a/mm/mmap.c @@ -2802,6 +2802,22 @@ int split_vma(struct mm_struct *mm, stru return __split_vma(mm, vma, addr, new_below); } +static inline void +unlock_range(struct vm_area_struct *start, unsigned long limit) +{ + struct mm_struct *mm = start->vm_mm; + struct vm_area_struct *tmp = start; + + while (tmp && tmp->vm_start < limit) { + if (tmp->vm_flags & VM_LOCKED) { + mm->locked_vm -= vma_pages(tmp); + munlock_vma_pages_all(tmp); + } + + tmp = tmp->vm_next; + } +} + /* Munmap is split into 2 main parts -- this part which finds * what needs doing, and the areas themselves, which do the * work. This now handles partial unmappings. @@ -2885,17 +2901,8 @@ int __do_munmap(struct mm_struct *mm, un /* * unlock any mlock()ed ranges before detaching vmas */ - if (mm->locked_vm) { - struct vm_area_struct *tmp = vma; - while (tmp && tmp->vm_start < end) { - if (tmp->vm_flags & VM_LOCKED) { - mm->locked_vm -= vma_pages(tmp); - munlock_vma_pages_all(tmp); - } - - tmp = tmp->vm_next; - } - } + if (mm->locked_vm) + unlock_range(vma, end); /* Detach vmas from rbtree */ if (!detach_vmas_to_be_unmapped(mm, vma, prev, end)) @@ -3180,14 +3187,8 @@ void exit_mmap(struct mm_struct *mm) mmap_write_unlock(mm); } - if (mm->locked_vm) { - vma = mm->mmap; - while (vma) { - if (vma->vm_flags & VM_LOCKED) - munlock_vma_pages_all(vma); - vma = vma->vm_next; - } - } + if (mm->locked_vm) + unlock_range(mm->mmap, ULONG_MAX); arch_exit_mmap(mm); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 103/192] mm/mmap: use find_vma_intersection() in do_mmap() for overlap 2021-06-29 2:32 incoming Andrew Morton ` (101 preceding siblings ...) 2021-06-29 2:38 ` [patch 102/192] mm/mmap: introduce unlock_range() for code cleanup Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 104/192] mm/memory.c: fix comment of finish_mkwrite_fault() Andrew Morton ` (88 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/mmap: use find_vma_intersection() in do_mmap() for overlap Using find_vma_intersection() avoids the need for a temporary variable and makes the code cleaner. Link: https://lkml.kernel.org/r/20210511014328.2902782-1-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mmap.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/mm/mmap.c~mm-mmap-use-find_vma_intersection-in-do_mmap-for-overlap +++ a/mm/mmap.c @@ -1457,9 +1457,7 @@ unsigned long do_mmap(struct file *file, return addr; if (flags & MAP_FIXED_NOREPLACE) { - struct vm_area_struct *vma = find_vma(mm, addr); - - if (vma && vma->vm_start < addr + len) + if (find_vma_intersection(mm, addr, addr + len)) return -EEXIST; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 104/192] mm/memory.c: fix comment of finish_mkwrite_fault() 2021-06-29 2:32 incoming Andrew Morton ` (102 preceding siblings ...) 2021-06-29 2:38 ` [patch 103/192] mm/mmap: use find_vma_intersection() in do_mmap() for overlap Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 105/192] mm: add vma_lookup(), update find_vma_intersection() comments Andrew Morton ` (87 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, linux-mm, liu.xiang, mm-commits, torvalds From: Liu Xiang <liu.xiang@zlingsmart.com> Subject: mm/memory.c: fix comment of finish_mkwrite_fault() Fix the return value in comment of finish_mkwrite_fault(). Link: https://lkml.kernel.org/r/20210513093931.15234-1-liu.xiang@zlingsmart.com Signed-off-by: Liu Xiang <liu.xiang@zlingsmart.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/memory.c~mm-memoryc-fix-comment-of-finish_mkwrite_fault +++ a/mm/memory.c @@ -3049,7 +3049,7 @@ oom: * The function expects the page to be locked or other protection against * concurrent faults / writeback (such as DAX radix tree locks). * - * Return: %VM_FAULT_WRITE on success, %0 when PTE got changed before + * Return: %0 on success, %VM_FAULT_NOPAGE when PTE got changed before * we acquired PTE lock. */ vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 105/192] mm: add vma_lookup(), update find_vma_intersection() comments 2021-06-29 2:32 incoming Andrew Morton ` (103 preceding siblings ...) 2021-06-29 2:38 ` [patch 104/192] mm/memory.c: fix comment of finish_mkwrite_fault() Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 106/192] drm/i915/selftests: use vma_lookup() in __igt_mmap() Andrew Morton ` (86 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, davem, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm: add vma_lookup(), update find_vma_intersection() comments Patch series "mm: Add vma_lookup()", v2. Many places in the kernel use find_vma() to get a vma and then check the start address of the vma to ensure the next vma was not returned. Other places use the find_vma_intersection() call with add, addr + 1 as the range; looking for just the vma at a specific address. The third use of find_vma() is by developers who do not know that the function starts searching at the provided address upwards for the next vma. This results in a bug that is often overlooked for a long time. Adding the new vma_lookup() function will allow for cleaner code by removing the find_vma() calls which check limits, making find_vma_intersection() calls of a single address to be shorter, and potentially reduce the incorrect uses of find_vma(). This patch (of 22): Many places in the kernel use find_vma() to get a vma and then check the start address of the vma to ensure the next vma was not returned. Other places use the find_vma_intersection() call with add, addr + 1 as the range; looking for just the vma at a specific address. The third use of find_vma() is by developers who do not know that the function starts searching at the provided address upwards for the next vma. This results in a bug that is often overlooked for a long time. Adding the new vma_lookup() function will allow for cleaner code by removing the find_vma() calls which check limits, making find_vma_intersection() calls of a single address to be shorter, and potentially reduce the incorrect uses of find_vma(). Also change find_vma_intersection() comments and declaration to be of the correct length and add kernel documentation style comment. Link: https://lkml.kernel.org/r/20210521174745.2219620-1-Liam.Howlett@Oracle.com Link: https://lkml.kernel.org/r/20210521174745.2219620-2-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: David Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mm.h | 36 ++++++++++++++++++++++++++++++++---- 1 file changed, 32 insertions(+), 4 deletions(-) --- a/include/linux/mm.h~mm-add-vma_lookup-update-find_vma_intersection-comments +++ a/include/linux/mm.h @@ -2676,17 +2676,45 @@ extern struct vm_area_struct * find_vma( extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned long addr, struct vm_area_struct **pprev); -/* Look up the first VMA which intersects the interval start_addr..end_addr-1, - NULL if none. Assume start_addr < end_addr. */ -static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * mm, unsigned long start_addr, unsigned long end_addr) +/** + * find_vma_intersection() - Look up the first VMA which intersects the interval + * @mm: The process address space. + * @start_addr: The inclusive start user address. + * @end_addr: The exclusive end user address. + * + * Returns: The first VMA within the provided range, %NULL otherwise. Assumes + * start_addr < end_addr. + */ +static inline +struct vm_area_struct *find_vma_intersection(struct mm_struct *mm, + unsigned long start_addr, + unsigned long end_addr) { - struct vm_area_struct * vma = find_vma(mm,start_addr); + struct vm_area_struct *vma = find_vma(mm, start_addr); if (vma && end_addr <= vma->vm_start) vma = NULL; return vma; } +/** + * vma_lookup() - Find a VMA at a specific address + * @mm: The process address space. + * @addr: The user address. + * + * Return: The vm_area_struct at the given address, %NULL otherwise. + */ +static inline +struct vm_area_struct *vma_lookup(struct mm_struct *mm, unsigned long addr) +{ + struct vm_area_struct *vma = find_vma(mm, addr); + + if (vma && addr < vma->vm_start) + vma = NULL; + + return vma; +} + static inline unsigned long vm_start_gap(struct vm_area_struct *vma) { unsigned long vm_start = vma->vm_start; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 106/192] drm/i915/selftests: use vma_lookup() in __igt_mmap() 2021-06-29 2:32 incoming Andrew Morton ` (104 preceding siblings ...) 2021-06-29 2:38 ` [patch 105/192] mm: add vma_lookup(), update find_vma_intersection() comments Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 107/192] arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() Andrew Morton ` (85 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: drm/i915/selftests: use vma_lookup() in __igt_mmap() vma_lookup() will look up the vma at a specific address. find_vma() will start the search for a specific address and continue upwards. This fixes an issue with the selftest as the returned vma may not be the newly created vma, but simply the vma at a higher address. Link: https://lkml.kernel.org/r/20210521174745.2219620-3-Liam.Howlett@Oracle.com Fixes: 6fedafacae1b (drm/i915/selftests: Wrap vm_mmap() around GEM objects Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c~drm-i915-selftests-use-vma_lookup-in-__igt_mmap +++ a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -871,7 +871,7 @@ static int __igt_mmap(struct drm_i915_pr pr_debug("igt_mmap(%s, %d) @ %lx\n", obj->mm.region->name, type, addr); - area = find_vma(current->mm, addr); + area = vma_lookup(current->mm, addr); if (!area) { pr_err("%s: Did not create a vm_area_struct for the mmap\n", obj->mm.region->name); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 107/192] arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() 2021-06-29 2:32 incoming Andrew Morton ` (105 preceding siblings ...) 2021-06-29 2:38 ` [patch 106/192] drm/i915/selftests: use vma_lookup() in __igt_mmap() Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:38 ` [patch 108/192] arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton ` (84 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-4-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arc/kernel/troubleshoot.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/arch/arc/kernel/troubleshoot.c~arch-arc-kernel-troubleshoot-use-vma_lookup-instead-of-find_vma +++ a/arch/arc/kernel/troubleshoot.c @@ -83,12 +83,12 @@ static void show_faulting_vma(unsigned l * non-inclusive vma */ mmap_read_lock(active_mm); - vma = find_vma(active_mm, address); + vma = vma_lookup(active_mm, address); - /* check against the find_vma( ) behaviour which returns the next VMA - * if the container VMA is not found + /* Lookup the vma at the address and report if the container VMA is not + * found */ - if (vma && (vma->vm_start <= address)) { + if (vma) { char buf[ARC_PATH_MAX]; char *nm = "?"; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 108/192] arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() 2021-06-29 2:32 incoming Andrew Morton ` (106 preceding siblings ...) 2021-06-29 2:38 ` [patch 107/192] arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() Andrew Morton @ 2021-06-29 2:38 ` Andrew Morton 2021-06-29 2:39 ` [patch 109/192] arch/powerpc/kvm/book3s_hv_uvmem: " Andrew Morton ` (83 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:38 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-5-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arm64/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm64/kvm/mmu.c~arch-arm64-kvm-use-vma_lookup-instead-of-find_vma_intersection +++ a/arch/arm64/kvm/mmu.c @@ -855,7 +855,7 @@ static int user_mem_abort(struct kvm_vcp /* Let's check if we will get back a huge page backed by hugetlbfs */ mmap_read_lock(current->mm); - vma = find_vma_intersection(current->mm, hva, hva + 1); + vma = vma_lookup(current->mm, hva); if (unlikely(!vma)) { kvm_err("Failed to find VMA for hva 0x%lx\n", hva); mmap_read_unlock(current->mm); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 109/192] arch/powerpc/kvm/book3s_hv_uvmem: use vma_lookup() instead of find_vma_intersection() 2021-06-29 2:32 incoming Andrew Morton ` (107 preceding siblings ...) 2021-06-29 2:38 ` [patch 108/192] arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 110/192] arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() Andrew Morton ` (82 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/powerpc/kvm/book3s_hv_uvmem: use vma_lookup() instead of find_vma_intersection() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-6-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/powerpc/kvm/book3s_hv_uvmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/kvm/book3s_hv_uvmem.c~arch-powerpc-kvm-book3s_hv_uvmem-use-vma_lookup-instead-of-find_vma_intersection +++ a/arch/powerpc/kvm/book3s_hv_uvmem.c @@ -614,7 +614,7 @@ void kvmppc_uvmem_drop_pages(const struc /* Fetch the VMA if addr is not in the latest fetched one */ if (!vma || addr >= vma->vm_end) { - vma = find_vma_intersection(kvm->mm, addr, addr+1); + vma = vma_lookup(kvm->mm, addr); if (!vma) { pr_err("Can't find VMA for gfn:0x%lx\n", gfn); break; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 110/192] arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() 2021-06-29 2:32 incoming Andrew Morton ` (108 preceding siblings ...) 2021-06-29 2:39 ` [patch 109/192] arch/powerpc/kvm/book3s_hv_uvmem: " Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 111/192] arch/mips/kernel/traps: use vma_lookup() instead of find_vma() Andrew Morton ` (81 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() Using vma_lookup() removes the requirement to check if the address is within the returned vma. The code is easier to understand and more compact. Link: https://lkml.kernel.org/r/20210521174745.2219620-7-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/powerpc/kvm/book3s_hv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/powerpc/kvm/book3s_hv.c~arch-powerpc-kvm-book3s-use-vma_lookup-in-kvmppc_hv_setup_htab_rma +++ a/arch/powerpc/kvm/book3s_hv.c @@ -4758,8 +4758,8 @@ static int kvmppc_hv_setup_htab_rma(stru /* Look up the VMA for the start of this memory slot */ hva = memslot->userspace_addr; mmap_read_lock(kvm->mm); - vma = find_vma(kvm->mm, hva); - if (!vma || vma->vm_start > hva || (vma->vm_flags & VM_IO)) + vma = vma_lookup(kvm->mm, hva); + if (!vma || (vma->vm_flags & VM_IO)) goto up_out; psize = vma_kernel_pagesize(vma); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 111/192] arch/mips/kernel/traps: use vma_lookup() instead of find_vma() 2021-06-29 2:32 incoming Andrew Morton ` (109 preceding siblings ...) 2021-06-29 2:39 ` [patch 110/192] arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 112/192] arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() Andrew Morton ` (80 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/mips/kernel/traps: use vma_lookup() instead of find_vma() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-8-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/mips/kernel/traps.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/arch/mips/kernel/traps.c~arch-mips-kernel-traps-use-vma_lookup-instead-of-find_vma +++ a/arch/mips/kernel/traps.c @@ -784,7 +784,6 @@ void force_fcr31_sig(unsigned long fcr31 int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) { int si_code; - struct vm_area_struct *vma; switch (sig) { case 0: @@ -800,8 +799,7 @@ int process_fpemu_return(int sig, void _ case SIGSEGV: mmap_read_lock(current->mm); - vma = find_vma(current->mm, (unsigned long)fault_addr); - if (vma && (vma->vm_start <= (unsigned long)fault_addr)) + if (vma_lookup(current->mm, (unsigned long)fault_addr)) si_code = SEGV_ACCERR; else si_code = SEGV_MAPERR; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 112/192] arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() 2021-06-29 2:32 incoming Andrew Morton ` (110 preceding siblings ...) 2021-06-29 2:39 ` [patch 111/192] arch/mips/kernel/traps: use vma_lookup() instead of find_vma() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find() Andrew Morton ` (79 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-9-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/m68k/kernel/sys_m68k.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/m68k/kernel/sys_m68k.c~arch-m68k-kernel-sys_m68k-use-vma_lookup-in-sys_cacheflush +++ a/arch/m68k/kernel/sys_m68k.c @@ -402,8 +402,8 @@ sys_cacheflush (unsigned long addr, int * to this process. */ mmap_read_lock(current->mm); - vma = find_vma(current->mm, addr); - if (!vma || addr < vma->vm_start || addr + len > vma->vm_end) + vma = vma_lookup(current->mm, addr); + if (!vma || addr + len > vma->vm_end) goto out_unlock; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find() 2021-06-29 2:32 incoming Andrew Morton ` (111 preceding siblings ...) 2021-06-29 2:39 ` [patch 112/192] arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 114/192] virt/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton ` (78 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: x86/sgx: use vma_lookup() in sgx_encl_find() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-10-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/x86/kernel/cpu/sgx/encl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/sgx/encl.h~x86-sgx-use-vma_lookup-in-sgx_encl_find +++ a/arch/x86/kernel/cpu/sgx/encl.h @@ -91,8 +91,8 @@ static inline int sgx_encl_find(struct m { struct vm_area_struct *result; - result = find_vma(mm, addr); - if (!result || result->vm_ops != &sgx_vm_ops || addr < result->vm_start) + result = vma_lookup(mm, addr); + if (!result || result->vm_ops != &sgx_vm_ops) return -EINVAL; *vma = result; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 114/192] virt/kvm: use vma_lookup() instead of find_vma_intersection() 2021-06-29 2:32 incoming Andrew Morton ` (112 preceding siblings ...) 2021-06-29 2:39 ` [patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 115/192] vfio: " Andrew Morton ` (77 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: virt/kvm: use vma_lookup() instead of find_vma_intersection() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-11-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- virt/kvm/kvm_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/virt/kvm/kvm_main.c~virt-kvm-use-vma_lookup-instead-of-find_vma_intersection +++ a/virt/kvm/kvm_main.c @@ -2170,7 +2170,7 @@ static kvm_pfn_t hva_to_pfn(unsigned lon } retry: - vma = find_vma_intersection(current->mm, addr, addr + 1); + vma = vma_lookup(current->mm, addr); if (vma == NULL) pfn = KVM_PFN_ERR_FAULT; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 115/192] vfio: use vma_lookup() instead of find_vma_intersection() 2021-06-29 2:32 incoming Andrew Morton ` (113 preceding siblings ...) 2021-06-29 2:39 ` [patch 114/192] virt/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 116/192] net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() Andrew Morton ` (76 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: vfio: use vma_lookup() instead of find_vma_intersection() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-12-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/vfio/vfio_iommu_type1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/vfio/vfio_iommu_type1.c~vfio-use-vma_lookup-instead-of-find_vma_intersection +++ a/drivers/vfio/vfio_iommu_type1.c @@ -567,7 +567,7 @@ static int vaddr_get_pfns(struct mm_stru vaddr = untagged_addr(vaddr); retry: - vma = find_vma_intersection(mm, vaddr, vaddr + 1); + vma = vma_lookup(mm, vaddr); if (vma && vma->vm_flags & VM_PFNMAP) { ret = follow_fault_pfn(vma, mm, vaddr, pfn, prot & IOMMU_WRITE); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 116/192] net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() 2021-06-29 2:32 incoming Andrew Morton ` (114 preceding siblings ...) 2021-06-29 2:39 ` [patch 115/192] vfio: " Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 117/192] drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() Andrew Morton ` (75 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, davem, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-13-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: David Miller <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- net/ipv4/tcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/ipv4/tcp.c~net-ipv5-tcp-use-vma_lookup-in-tcp_zerocopy_receive +++ a/net/ipv4/tcp.c @@ -2095,8 +2095,8 @@ static int tcp_zerocopy_receive(struct s mmap_read_lock(current->mm); - vma = find_vma(current->mm, address); - if (!vma || vma->vm_start > address || vma->vm_ops != &tcp_vm_ops) { + vma = vma_lookup(current->mm, address); + if (!vma || vma->vm_ops != &tcp_vm_ops) { mmap_read_unlock(current->mm); return -EINVAL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 117/192] drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() 2021-06-29 2:32 incoming Andrew Morton ` (115 preceding siblings ...) 2021-06-29 2:39 ` [patch 116/192] net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 118/192] media: videobuf2: use vma_lookup() in get_vaddr_frames() Andrew Morton ` (74 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, alexander.deucher, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-14-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Alex Deucher <alexander.deucher@amd.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c~drm-amdgpu-use-vma_lookup-in-amdgpu_ttm_tt_get_user_pages +++ a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -709,8 +709,8 @@ int amdgpu_ttm_tt_get_user_pages(struct } mmap_read_lock(mm); - vma = find_vma(mm, start); - if (unlikely(!vma || start < vma->vm_start)) { + vma = vma_lookup(mm, start); + if (unlikely(!vma)) { r = -EFAULT; goto out_unlock; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 118/192] media: videobuf2: use vma_lookup() in get_vaddr_frames() 2021-06-29 2:32 incoming Andrew Morton ` (116 preceding siblings ...) 2021-06-29 2:39 ` [patch 117/192] drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 119/192] misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() Andrew Morton ` (73 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: media: videobuf2: use vma_lookup() in get_vaddr_frames() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-15-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/media/common/videobuf2/frame_vector.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/media/common/videobuf2/frame_vector.c~media-videobuf2-use-vma_lookup-in-get_vaddr_frames +++ a/drivers/media/common/videobuf2/frame_vector.c @@ -64,7 +64,7 @@ int get_vaddr_frames(unsigned long start do { unsigned long *nums = frame_vector_pfns(vec); - vma = find_vma_intersection(mm, start, start + 1); + vma = vma_lookup(mm, start); if (!vma) break; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 119/192] misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() 2021-06-29 2:32 incoming Andrew Morton ` (117 preceding siblings ...) 2021-06-29 2:39 ` [patch 118/192] media: videobuf2: use vma_lookup() in get_vaddr_frames() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 120/192] kernel/events/uprobes: use vma_lookup() in find_active_uprobe() Andrew Morton ` (72 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-16-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/misc/sgi-gru/grufault.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/misc/sgi-gru/grufault.c~misc-sgi-gru-grufault-use-vma_lookup-in-gru_find_vma +++ a/drivers/misc/sgi-gru/grufault.c @@ -49,8 +49,8 @@ struct vm_area_struct *gru_find_vma(unsi { struct vm_area_struct *vma; - vma = find_vma(current->mm, vaddr); - if (vma && vma->vm_start <= vaddr && vma->vm_ops == &gru_vm_ops) + vma = vma_lookup(current->mm, vaddr); + if (vma && vma->vm_ops == &gru_vm_ops) return vma; return NULL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 120/192] kernel/events/uprobes: use vma_lookup() in find_active_uprobe() 2021-06-29 2:32 incoming Andrew Morton ` (118 preceding siblings ...) 2021-06-29 2:39 ` [patch 119/192] misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 121/192] lib/test_hmm: use vma_lookup() in dmirror_migrate() Andrew Morton ` (71 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: kernel/events/uprobes: use vma_lookup() in find_active_uprobe() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-17-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/events/uprobes.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/kernel/events/uprobes.c~kernel-events-uprobes-use-vma_lookup-in-find_active_uprobe +++ a/kernel/events/uprobes.c @@ -2046,8 +2046,8 @@ static struct uprobe *find_active_uprobe struct vm_area_struct *vma; mmap_read_lock(mm); - vma = find_vma(mm, bp_vaddr); - if (vma && vma->vm_start <= bp_vaddr) { + vma = vma_lookup(mm, bp_vaddr); + if (vma) { if (valid_vma(vma, false)) { struct inode *inode = file_inode(vma->vm_file); loff_t offset = vaddr_to_offset(vma, bp_vaddr); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 121/192] lib/test_hmm: use vma_lookup() in dmirror_migrate() 2021-06-29 2:32 incoming Andrew Morton ` (119 preceding siblings ...) 2021-06-29 2:39 ` [patch 120/192] kernel/events/uprobes: use vma_lookup() in find_active_uprobe() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 122/192] mm/ksm: use vma_lookup() in find_mergeable_vma() Andrew Morton ` (70 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: lib/test_hmm: use vma_lookup() in dmirror_migrate() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-18-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- lib/test_hmm.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/lib/test_hmm.c~lib-test_hmm-use-vma_lookup-in-dmirror_migrate +++ a/lib/test_hmm.c @@ -686,9 +686,8 @@ static int dmirror_migrate(struct dmirro mmap_read_lock(mm); for (addr = start; addr < end; addr = next) { - vma = find_vma(mm, addr); - if (!vma || addr < vma->vm_start || - !(vma->vm_flags & VM_READ)) { + vma = vma_lookup(mm, addr); + if (!vma || !(vma->vm_flags & VM_READ)) { ret = -EINVAL; goto out; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 122/192] mm/ksm: use vma_lookup() in find_mergeable_vma() 2021-06-29 2:32 incoming Andrew Morton ` (120 preceding siblings ...) 2021-06-29 2:39 ` [patch 121/192] lib/test_hmm: use vma_lookup() in dmirror_migrate() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 123/192] mm/migrate: use vma_lookup() in do_pages_stat_array() Andrew Morton ` (69 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/ksm: use vma_lookup() in find_mergeable_vma() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-19-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/ksm.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- a/mm/ksm.c~mm-ksm-use-vma_lookup-in-find_mergeable_vma +++ a/mm/ksm.c @@ -521,10 +521,8 @@ static struct vm_area_struct *find_merge struct vm_area_struct *vma; if (ksm_test_exit(mm)) return NULL; - vma = find_vma(mm, addr); - if (!vma || vma->vm_start > addr) - return NULL; - if (!(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma) + vma = vma_lookup(mm, addr); + if (!vma || !(vma->vm_flags & VM_MERGEABLE) || !vma->anon_vma) return NULL; return vma; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 123/192] mm/migrate: use vma_lookup() in do_pages_stat_array() 2021-06-29 2:32 incoming Andrew Morton ` (121 preceding siblings ...) 2021-06-29 2:39 ` [patch 122/192] mm/ksm: use vma_lookup() in find_mergeable_vma() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 124/192] mm/mremap: use vma_lookup() in vma_to_resize() Andrew Morton ` (68 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/migrate: use vma_lookup() in do_pages_stat_array() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-20-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/migrate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/migrate.c~mm-migrate-use-vma_lookup-in-do_pages_stat_array +++ a/mm/migrate.c @@ -1834,8 +1834,8 @@ static void do_pages_stat_array(struct m struct page *page; int err = -EFAULT; - vma = find_vma(mm, addr); - if (!vma || addr < vma->vm_start) + vma = vma_lookup(mm, addr); + if (!vma) goto set_status; /* FOLL_DUMP to ignore special (like zero) pages */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 124/192] mm/mremap: use vma_lookup() in vma_to_resize() 2021-06-29 2:32 incoming Andrew Morton ` (122 preceding siblings ...) 2021-06-29 2:39 ` [patch 123/192] mm/migrate: use vma_lookup() in do_pages_stat_array() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 125/192] mm/memory.c: use vma_lookup() in __access_remote_vm() Andrew Morton ` (67 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/mremap: use vma_lookup() in vma_to_resize() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-21-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mremap.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/mm/mremap.c~mm-mremap-use-vma_lookup-in-vma_to_resize +++ a/mm/mremap.c @@ -634,10 +634,11 @@ static struct vm_area_struct *vma_to_res unsigned long *p) { struct mm_struct *mm = current->mm; - struct vm_area_struct *vma = find_vma(mm, addr); + struct vm_area_struct *vma; unsigned long pgoff; - if (!vma || vma->vm_start > addr) + vma = vma_lookup(mm, addr); + if (!vma) return ERR_PTR(-EFAULT); /* _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 125/192] mm/memory.c: use vma_lookup() in __access_remote_vm() 2021-06-29 2:32 incoming Andrew Morton ` (123 preceding siblings ...) 2021-06-29 2:39 ` [patch 124/192] mm/mremap: use vma_lookup() in vma_to_resize() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 126/192] mm/mempolicy: " Andrew Morton ` (66 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/memory.c: use vma_lookup() in __access_remote_vm() Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-22-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memory.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mm/memory.c~mm-memoryc-use-vma_lookup-in-__access_remote_vm +++ a/mm/memory.c @@ -4994,8 +4994,8 @@ int __access_remote_vm(struct mm_struct * Check if this is a VM_IO | VM_PFNMAP VMA, which * we can access using slightly different code. */ - vma = find_vma(mm, addr); - if (!vma || vma->vm_start > addr) + vma = vma_lookup(mm, addr); + if (!vma) break; if (vma->vm_ops && vma->vm_ops->access) ret = vma->vm_ops->access(vma, addr, buf, _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 126/192] mm/mempolicy: use vma_lookup() in __access_remote_vm() 2021-06-29 2:32 incoming Andrew Morton ` (124 preceding siblings ...) 2021-06-29 2:39 ` [patch 125/192] mm/memory.c: use vma_lookup() in __access_remote_vm() Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 127/192] mm: update legacy flush_tlb_* to use vma Andrew Morton ` (65 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, david, dbueso, geert, ldufour, Liam.Howlett, linux-mm, mm-commits, torvalds From: Liam Howlett <liam.howlett@oracle.com> Subject: mm/mempolicy: use vma_lookup() in __access_remote_vm() vma_lookup() finds the vma of a specific address with a cleaner interface and is more readable. Link: https://lkml.kernel.org/r/20210521174745.2219620-23-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mempolicy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/mempolicy.c~mm-mempolicy-use-vma_lookup-in-__access_remote_vm +++ a/mm/mempolicy.c @@ -975,7 +975,7 @@ static long do_get_mempolicy(int *policy * want to return MPOL_DEFAULT in this case. */ mmap_read_lock(mm); - vma = find_vma_intersection(mm, addr, addr+1); + vma = vma_lookup(mm, addr); if (!vma) { mmap_read_unlock(mm); return -EFAULT; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 127/192] mm: update legacy flush_tlb_* to use vma 2021-06-29 2:32 incoming Andrew Morton ` (125 preceding siblings ...) 2021-06-29 2:39 ` [patch 126/192] mm/mempolicy: " Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 2:39 ` [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once Andrew Morton ` (64 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: akpm, chenli, chris, geert, jonas, linux-mm, linux, mm-commits, torvalds From: Chen Li <chenli@uniontech.com> Subject: mm: update legacy flush_tlb_* to use vma 1. These tlb flush functions have been using vma instead mm long time ago, but there is still some coments use mm as parameter. 2. the actual struct we use is vm_area_struct instead of vma_struct. 3. remove unused flush_kern_tlb_page. Link: https://lkml.kernel.org/r/87k0oaq311.wl-chenli@uniontech.com Signed-off-by: Chen Li <chenli@uniontech.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Jonas Bonn <jonas@southpole.se> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arm/include/asm/tlbflush.h | 13 +++---------- arch/arm/mm/tlb-v6.S | 2 +- arch/arm/mm/tlb-v7.S | 2 +- arch/ia64/kernel/efi_stub.S | 2 +- arch/m68k/include/asm/tlbflush.h | 2 +- arch/openrisc/include/asm/tlbflush.h | 2 +- arch/xtensa/include/asm/tlbflush.h | 4 ++-- 7 files changed, 10 insertions(+), 17 deletions(-) --- a/arch/arm/include/asm/tlbflush.h~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/arm/include/asm/tlbflush.h @@ -253,7 +253,7 @@ extern struct cpu_tlb_fns cpu_tlb; * space. * - mm - mm_struct describing address space * - * flush_tlb_range(mm,start,end) + * flush_tlb_range(vma,start,end) * * Invalidate a range of TLB entries in the specified * address space. @@ -261,18 +261,11 @@ extern struct cpu_tlb_fns cpu_tlb; * - start - start address (may not be aligned) * - end - end address (exclusive, may not be aligned) * - * flush_tlb_page(vaddr,vma) + * flush_tlb_page(vma, uaddr) * * Invalidate the specified page in the specified address range. + * - vma - vm_area_struct describing address range * - vaddr - virtual address (may not be aligned) - * - vma - vma_struct describing address range - * - * flush_kern_tlb_page(kaddr) - * - * Invalidate the TLB entry for the specified page. The address - * will be in the kernels virtual memory space. Current uses - * only require the D-TLB to be invalidated. - * - kaddr - Kernel virtual memory address */ /* --- a/arch/arm/mm/tlb-v6.S~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/arm/mm/tlb-v6.S @@ -24,7 +24,7 @@ * * - start - start address (may not be aligned) * - end - end address (exclusive, may not be aligned) - * - vma - vma_struct describing address range + * - vma - vm_area_struct describing address range * * It is assumed that: * - the "Invalidate single entry" instruction will invalidate --- a/arch/arm/mm/tlb-v7.S~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/arm/mm/tlb-v7.S @@ -23,7 +23,7 @@ * * - start - start address (may not be aligned) * - end - end address (exclusive, may not be aligned) - * - vma - vma_struct describing address range + * - vma - vm_area_struct describing address range * * It is assumed that: * - the "Invalidate single entry" instruction will invalidate --- a/arch/ia64/kernel/efi_stub.S~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/ia64/kernel/efi_stub.S @@ -7,7 +7,7 @@ * * This stub allows us to make EFI calls in physical mode with interrupts * turned off. We need this because we can't call SetVirtualMap() until - * the kernel has booted far enough to allow allocation of struct vma_struct + * the kernel has booted far enough to allow allocation of struct vm_area_struct * entries (which we would need to map stuff with memory attributes other * than uncached or writeback...). Since the GetTime() service gets called * earlier than that, we need to be able to make physical mode EFI calls from --- a/arch/m68k/include/asm/tlbflush.h~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/m68k/include/asm/tlbflush.h @@ -263,7 +263,7 @@ static inline void flush_tlb_page(struct BUG(); } -static inline void flush_tlb_range(struct mm_struct *mm, +static inline void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { BUG(); --- a/arch/openrisc/include/asm/tlbflush.h~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/openrisc/include/asm/tlbflush.h @@ -25,7 +25,7 @@ * - flush_tlb_all() flushes all processes TLBs * - flush_tlb_mm(mm) flushes the specified mm context TLB's * - flush_tlb_page(vma, vmaddr) flushes one page - * - flush_tlb_range(mm, start, end) flushes a range of pages + * - flush_tlb_range(vma, start, end) flushes a range of pages */ extern void local_flush_tlb_all(void); extern void local_flush_tlb_mm(struct mm_struct *mm); --- a/arch/xtensa/include/asm/tlbflush.h~mm-update-legacy-flush_tlb_-to-use-vma +++ a/arch/xtensa/include/asm/tlbflush.h @@ -26,8 +26,8 @@ * * - flush_tlb_all() flushes all processes TLB entries * - flush_tlb_mm(mm) flushes the specified mm context TLB entries - * - flush_tlb_page(mm, vmaddr) flushes a single page - * - flush_tlb_range(mm, start, end) flushes a range of pages + * - flush_tlb_page(vma, page) flushes a single page + * - flush_tlb_range(vma, vmaddr, end) flushes a range of pages */ void local_flush_tlb_all(void); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-29 2:32 incoming Andrew Morton ` (126 preceding siblings ...) 2021-06-29 2:39 ` [patch 127/192] mm: update legacy flush_tlb_* to use vma Andrew Morton @ 2021-06-29 2:39 ` Andrew Morton 2021-06-29 17:50 ` Linus Torvalds 2021-06-29 2:40 ` [patch 129/192] h8300: remove unused variable Andrew Morton ` (63 subsequent siblings) 191 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:39 UTC (permalink / raw) To: aarcange, akpm, eugenis, kostyak, linux-mm, mm-commits, pcc, peterx, torvalds From: Peter Collingbourne <pcc@google.com> Subject: mm: improve mprotect(R|W) efficiency on pages referenced once In the Scudo memory allocator [1] we would like to be able to detect use-after-free vulnerabilities involving large allocations by issuing mprotect(PROT_NONE) on the memory region used for the allocation when it is deallocated. Later on, after the memory region has been "quarantined" for a sufficient period of time we would like to be able to use it for another allocation by issuing mprotect(PROT_READ|PROT_WRITE). Before this patch, after removing the write protection, any writes to the memory region would result in page faults and entering the copy-on-write code path, even in the usual case where the pages are only referenced by a single PTE, harming performance unnecessarily. Make it so that any pages in anonymous mappings that are only referenced by a single PTE are immediately made writable during the mprotect so that we can avoid the page faults. This program shows the critical syscall sequence that we intend to use in the allocator: #include <string.h> #include <sys/mman.h> enum { kSize = 131072 }; int main(int argc, char **argv) { char *addr = (char *)mmap(0, kSize, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); for (int i = 0; i != 100000; ++i) { memset(addr, i, kSize); mprotect((void *)addr, kSize, PROT_NONE); mprotect((void *)addr, kSize, PROT_READ | PROT_WRITE); } } The effect of this patch on the above program was measured on a DragonBoard 845c by taking the median real time execution time of 10 runs. Before: 2.94s After: 0.66s The effect was also measured using one of the microbenchmarks that we normally use to benchmark the allocator [2], after modifying it to make the appropriate mprotect calls [3]. With an allocation size of 131072 bytes to trigger the allocator's "large allocation" code path the per-iteration time was measured as follows: Before: 27450ns After: 6010ns This patch means that we do more work during the mprotect call itself in exchange for less work when the pages are accessed. In the worst case, the pages are not accessed at all. The effect of this patch in such cases was measured using the following program: #include <string.h> #include <sys/mman.h> enum { kSize = 131072 }; int main(int argc, char **argv) { char *addr = (char *)mmap(0, kSize, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); memset(addr, 1, kSize); for (int i = 0; i != 100000; ++i) { #ifdef PAGE_FAULT memset(addr + (i * 4096) % kSize, i, 4096); #endif mprotect((void *)addr, kSize, PROT_NONE); mprotect((void *)addr, kSize, PROT_READ | PROT_WRITE); } } With PAGE_FAULT undefined (0 pages touched after removing write protection) the median real time execution time of 100 runs was measured as follows: Before: 0.330260s After: 0.338836s With PAGE_FAULT defined (1 page touched) the measurements were as follows: Before: 0.438048s After: 0.355661s So it seems that even with a single page fault the new approach is faster. I saw similar results if I adjusted the programs to use a larger mapping size. With kSize = 1048576 I get these numbers with PAGE_FAULT undefined: Before: 1.428988s After: 1.512016s i.e. around 5.5%. And these with PAGE_FAULT defined: Before: 1.518559s After: 1.524417s i.e. about the same. What I think we may conclude from these results is that for smaller mappings the advantage of the previous approach, although measurable, is wiped out by a single page fault. I think we may expect that there should be at least one access resulting in a page fault (under the previous approach) after making the pages writable, since the program presumably made the pages writable for a reason. For larger mappings we may guesstimate that the new approach wins if the density of future page faults is > 0.4%. But for the mappings that are large enough for density to matter (not just the absolute number of page faults) it doesn't seem like the increase in mprotect latency would be very large relative to the total mprotect execution time. [pcc@google.com: add comments, prohibit optimization for NUMA pages] Link: https://lkml.kernel.org/r/20210601185926.2623183-1-pcc@google.com Link: https://lkml.kernel.org/r/20210527190453.1259020-1-pcc@google.com Link: https://linux-review.googlesource.com/id/I98d75ef90e20330c578871c87494d64b1df3f1b8 Link: [1] https://source.android.com/devices/tech/debug/scudo Link: [2] https://cs.android.com/android/platform/superproject/+/master:bionic/benchmarks/stdlib_benchmark.cpp;l=53;drc=e8693e78711e8f45ccd2b610e4dbe0b94d551cc9 Link: [3] https://github.com/pcc/llvm-project/commit/scudo-mprotect-secondary2 Signed-off-by: Peter Collingbourne <pcc@google.com> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Kostya Kortchinsky <kostyak@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/mprotect.c | 52 ++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 46 insertions(+), 6 deletions(-) --- a/mm/mprotect.c~mm-improve-mprotectrw-efficiency-on-pages-referenced-once +++ a/mm/mprotect.c @@ -35,6 +35,51 @@ #include "internal.h" +/* Determine whether we can avoid taking write faults for known dirty pages. */ +static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, + unsigned long cp_flags) +{ + /* + * The dirty accountable bit indicates that we can always make the page + * writable regardless of the number of references. + */ + if (!(cp_flags & MM_CP_DIRTY_ACCT)) { + /* Otherwise, we must have exclusive access to the page. */ + if (!(vma_is_anonymous(vma) && (vma->vm_flags & VM_WRITE))) + return false; + + if (page_count(pte_page(pte)) != 1) + return false; + } + + /* + * Don't do this optimization for clean pages as we need to be notified + * of the transition from clean to dirty. + */ + if (!pte_dirty(pte)) + return false; + + /* Same for softdirty. */ + if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) + return false; + + /* + * For userfaultfd the user program needs to monitor write faults so we + * can't do this optimization. + */ + if (pte_uffd_wp(pte)) + return false; + + /* + * It is unclear whether this optimization can be done safely for NUMA + * pages. + */ + if (cp_flags & MM_CP_PROT_NUMA) + return false; + + return true; +} + static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, unsigned long end, pgprot_t newprot, unsigned long cp_flags) @@ -43,7 +88,6 @@ static unsigned long change_pte_range(st spinlock_t *ptl; unsigned long pages = 0; int target_node = NUMA_NO_NODE; - bool dirty_accountable = cp_flags & MM_CP_DIRTY_ACCT; bool prot_numa = cp_flags & MM_CP_PROT_NUMA; bool uffd_wp = cp_flags & MM_CP_UFFD_WP; bool uffd_wp_resolve = cp_flags & MM_CP_UFFD_WP_RESOLVE; @@ -131,12 +175,8 @@ static unsigned long change_pte_range(st ptent = pte_clear_uffd_wp(ptent); } - /* Avoid taking write faults for known dirty pages */ - if (dirty_accountable && pte_dirty(ptent) && - (pte_soft_dirty(ptent) || - !(vma->vm_flags & VM_SOFTDIRTY))) { + if (may_avoid_write_fault(ptent, vma, cp_flags)) ptent = pte_mkwrite(ptent); - } ptep_modify_prot_commit(vma, addr, pte, oldpte, ptent); pages++; } else if (is_swap_pte(oldpte)) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-29 2:39 ` [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once Andrew Morton @ 2021-06-29 17:50 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-29 17:50 UTC (permalink / raw) To: Andrew Morton Cc: Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne, Peter Xu On Mon, Jun 28, 2021 at 7:40 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > - /* Avoid taking write faults for known dirty pages */ > - if (dirty_accountable && pte_dirty(ptent) && > - (pte_soft_dirty(ptent) || > - !(vma->vm_flags & VM_SOFTDIRTY))) { > + if (may_avoid_write_fault(ptent, vma, cp_flags)) > ptent = pte_mkwrite(ptent); > - } Hmm. I don't think this is correct. As fat as I can tell, may_avoid_write_fault() doesn't even check if the vma is writable! Am I misreading it? Because I think you just made even a shared mmap with "mprotect(PROT_READ)" turn the pte's writable. Which is a "slight" security issue. Maybe the new code is fine, and I'm missing something. The old code looks strange too, which makes me think that the MM_CP_DIRTY_ACCT test ends up saving us and depend on VM_WRITE. But it's very much not obvious. And even if I _am_ missing something, I really would like a very obvious and direct test for "this vma is writable", ie maybe a if (!(vma->vm_flags & VM_WRITE)) return false; at the very top of the function. And no, "pte_dirty()" is not a reason to make something writable, it might have started out as a writable mapping, and we dirtied the page, and we made it read-only. The page stays dirty, but it shouldn't become writable just because of that. So please make me get the warm and fuzzies about this code. Because as-is, it just looks scary. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once @ 2021-06-29 17:50 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-29 17:50 UTC (permalink / raw) To: Andrew Morton Cc: Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne, Peter Xu On Mon, Jun 28, 2021 at 7:40 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > - /* Avoid taking write faults for known dirty pages */ > - if (dirty_accountable && pte_dirty(ptent) && > - (pte_soft_dirty(ptent) || > - !(vma->vm_flags & VM_SOFTDIRTY))) { > + if (may_avoid_write_fault(ptent, vma, cp_flags)) > ptent = pte_mkwrite(ptent); > - } Hmm. I don't think this is correct. As fat as I can tell, may_avoid_write_fault() doesn't even check if the vma is writable! Am I misreading it? Because I think you just made even a shared mmap with "mprotect(PROT_READ)" turn the pte's writable. Which is a "slight" security issue. Maybe the new code is fine, and I'm missing something. The old code looks strange too, which makes me think that the MM_CP_DIRTY_ACCT test ends up saving us and depend on VM_WRITE. But it's very much not obvious. And even if I _am_ missing something, I really would like a very obvious and direct test for "this vma is writable", ie maybe a if (!(vma->vm_flags & VM_WRITE)) return false; at the very top of the function. And no, "pte_dirty()" is not a reason to make something writable, it might have started out as a writable mapping, and we dirtied the page, and we made it read-only. The page stays dirty, but it shouldn't become writable just because of that. So please make me get the warm and fuzzies about this code. Because as-is, it just looks scary. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-29 17:50 ` Linus Torvalds (?) @ 2021-06-30 0:12 ` Peter Xu 2021-06-30 1:39 ` Peter Xu -1 siblings, 1 reply; 530+ messages in thread From: Peter Xu @ 2021-06-30 0:12 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Tue, Jun 29, 2021 at 10:50:12AM -0700, Linus Torvalds wrote: > On Mon, Jun 28, 2021 at 7:40 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > > > - /* Avoid taking write faults for known dirty pages */ > > - if (dirty_accountable && pte_dirty(ptent) && > > - (pte_soft_dirty(ptent) || > > - !(vma->vm_flags & VM_SOFTDIRTY))) { > > + if (may_avoid_write_fault(ptent, vma, cp_flags)) > > ptent = pte_mkwrite(ptent); > > - } > > Hmm. I don't think this is correct. > > As fat as I can tell, may_avoid_write_fault() doesn't even check if > the vma is writable! > > Am I misreading it? Because I think you just made even a shared mmap > with "mprotect(PROT_READ)" turn the pte's writable. > > Which is a "slight" security issue. > > Maybe the new code is fine, and I'm missing something. The old code > looks strange too, which makes me think that the MM_CP_DIRTY_ACCT test > ends up saving us and depend on VM_WRITE. But it's very much not > obvious. vma_wants_writenotify() checks first VM_WRITE|VM_SHARED, otherwise MM_CP_DIRTY_ACCT will not be set. While for anonymous vmas the newly introduced may_avoid_write_fault() checks VM_WRITE explicitly. Agreed even if it's checked it's not straightforward. Maybe it'll be a bonus to have a comment above may_avoid_write_fault() about it in a follow up. > > And even if I _am_ missing something, I really would like a very > obvious and direct test for "this vma is writable", ie maybe a > > if (!(vma->vm_flags & VM_WRITE)) > return false; > > at the very top of the function. Yes looks okay too; I think using MM_CP_DIRTY_ACCT flag has a slight advantage in that it checks VM_WRITE only once before calling change_protection(), rather than doing the check for every pte even if we know it'll have the same result. However it indeed hides the facts deeper.. > > And no, "pte_dirty()" is not a reason to make something writable, it > might have started out as a writable mapping, and we dirtied the page, > and we made it read-only. The page stays dirty, but it shouldn't > become writable just because of that. I think the dirty bit checks are only to make sure we don't need those extra write faults. It should definitely be based on the fact that VM_WRITE being set already. Thanks, -- Peter Xu ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-30 0:12 ` Peter Xu @ 2021-06-30 1:39 ` Peter Xu 2021-06-30 2:25 ` Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Peter Xu @ 2021-06-30 1:39 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Tue, Jun 29, 2021 at 08:12:12PM -0400, Peter Xu wrote: > On Tue, Jun 29, 2021 at 10:50:12AM -0700, Linus Torvalds wrote: > > On Mon, Jun 28, 2021 at 7:40 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > > > > > > - /* Avoid taking write faults for known dirty pages */ > > > - if (dirty_accountable && pte_dirty(ptent) && > > > - (pte_soft_dirty(ptent) || > > > - !(vma->vm_flags & VM_SOFTDIRTY))) { > > > + if (may_avoid_write_fault(ptent, vma, cp_flags)) > > > ptent = pte_mkwrite(ptent); > > > - } > > > > Hmm. I don't think this is correct. > > > > As fat as I can tell, may_avoid_write_fault() doesn't even check if > > the vma is writable! > > > > Am I misreading it? Because I think you just made even a shared mmap > > with "mprotect(PROT_READ)" turn the pte's writable. > > > > Which is a "slight" security issue. > > > > Maybe the new code is fine, and I'm missing something. The old code > > looks strange too, which makes me think that the MM_CP_DIRTY_ACCT test > > ends up saving us and depend on VM_WRITE. But it's very much not > > obvious. > > vma_wants_writenotify() checks first VM_WRITE|VM_SHARED, otherwise > MM_CP_DIRTY_ACCT will not be set. While for anonymous vmas the newly > introduced may_avoid_write_fault() checks VM_WRITE explicitly. Sorry, this statement is unclear. It's not about anonymous or not, it's just that a hidden check against VM_WRITE is there already.. Say, below chunk of the patch: if (!(cp_flags & MM_CP_DIRTY_ACCT)) { /* Otherwise, we must have exclusive access to the page. */ if (!(vma_is_anonymous(vma) && (vma->vm_flags & VM_WRITE))) return false; if (page_count(pte_page(pte)) != 1) return false; } Should be the same as: if (!(cp_flags & MM_CP_DIRTY_ACCT)) { if (!vma_is_anonymous(vma)) return false; if (!(vma->vm_flags & VM_WRITE)) return false; if (page_count(pte_page(pte)) != 1) return false; } And since MM_CP_DIRTY_ACCT implies "VM_WRITE|VM_SHARED" all set, above should be a slightly faster version of below: /* This just never trigger if MM_CP_DIRTY_ACCT set */ if (!(vma->vm_flags & VM_WRITE)) return false; if (!(cp_flags & MM_CP_DIRTY_ACCT)) { if (!vma_is_anonymous(vma)) return false; if (page_count(pte_page(pte)) != 1) return false; } It's just that we avoid checking "vma->vm_flags & VM_WRITE" when MM_CP_DIRTY_ACCT set. Again, I think in all cases some more comment should be good indeed.. > > Agreed even if it's checked it's not straightforward. Maybe it'll be a bonus > to have a comment above may_avoid_write_fault() about it in a follow up. > > > > > And even if I _am_ missing something, I really would like a very > > obvious and direct test for "this vma is writable", ie maybe a > > > > if (!(vma->vm_flags & VM_WRITE)) > > return false; > > > > at the very top of the function. > > Yes looks okay too; I think using MM_CP_DIRTY_ACCT flag has a slight advantage > in that it checks VM_WRITE only once before calling change_protection(), rather > than doing the check for every pte even if we know it'll have the same result. > However it indeed hides the facts deeper.. > > > > > And no, "pte_dirty()" is not a reason to make something writable, it > > might have started out as a writable mapping, and we dirtied the page, > > and we made it read-only. The page stays dirty, but it shouldn't > > become writable just because of that. > > I think the dirty bit checks are only to make sure we don't need those extra > write faults. It should definitely be based on the fact that VM_WRITE being > set already. > > Thanks, > > -- > Peter Xu -- Peter Xu ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-30 1:39 ` Peter Xu @ 2021-06-30 2:25 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-30 2:25 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Tue, Jun 29, 2021 at 6:39 PM Peter Xu <peterx@redhat.com> wrote: > > And since MM_CP_DIRTY_ACCT implies "VM_WRITE|VM_SHARED" all set, above should > be a slightly faster version of below: That's way too subtle, particularly since the MM_CP_DIRTY_ACCT logic comes from another file entirely. I don't think it's even faster, considering that presumably the anonymous mapping case is the common one, and that's the one that needs all the extra tests, it's likely better to _not_ test that very subtle flag at all, and just doing the straightforward and obvious tests that are understandable _locally_. So I claim that it's (a) not an optimization at all (b) completely locally unintuitive and unreadable > Again, I think in all cases some more comment should be good indeed.. I really want more than a comment. I want that MM_CP_DIRTY_ACCT bit testing gone. The only point where it makes sense to check MM_CP_DIRTY_ACCT is within the context of "is the page already dirty". So I think the logic should be something along the lines of - first: if (!(vma->vm_flags & VM_WRITE)) return false; because that logic is set in stone, and true regardless of anything else. If the vma isn't writable, we're not going to set the write bit. End of story. - then, check the vma_is_anonumous() case: if (vma_is_anonymous(vma)) return page_count(pte_page(pte)) == 1; because if it's a writable mapping, and anonymous, then we can mark it writable if we're the exclusive owners of that page. - and THEN we can handle the "ok, shared mapping, now let's start thinking about dirty accounting" cases. Make it obvious and correct. This is not a sequence where you should try to (incorrectly) optimize away individual instructions. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once @ 2021-06-30 2:25 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-30 2:25 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Tue, Jun 29, 2021 at 6:39 PM Peter Xu <peterx@redhat.com> wrote: > > And since MM_CP_DIRTY_ACCT implies "VM_WRITE|VM_SHARED" all set, above should > be a slightly faster version of below: That's way too subtle, particularly since the MM_CP_DIRTY_ACCT logic comes from another file entirely. I don't think it's even faster, considering that presumably the anonymous mapping case is the common one, and that's the one that needs all the extra tests, it's likely better to _not_ test that very subtle flag at all, and just doing the straightforward and obvious tests that are understandable _locally_. So I claim that it's (a) not an optimization at all (b) completely locally unintuitive and unreadable > Again, I think in all cases some more comment should be good indeed.. I really want more than a comment. I want that MM_CP_DIRTY_ACCT bit testing gone. The only point where it makes sense to check MM_CP_DIRTY_ACCT is within the context of "is the page already dirty". So I think the logic should be something along the lines of - first: if (!(vma->vm_flags & VM_WRITE)) return false; because that logic is set in stone, and true regardless of anything else. If the vma isn't writable, we're not going to set the write bit. End of story. - then, check the vma_is_anonumous() case: if (vma_is_anonymous(vma)) return page_count(pte_page(pte)) == 1; because if it's a writable mapping, and anonymous, then we can mark it writable if we're the exclusive owners of that page. - and THEN we can handle the "ok, shared mapping, now let's start thinking about dirty accounting" cases. Make it obvious and correct. This is not a sequence where you should try to (incorrectly) optimize away individual instructions. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-30 2:25 ` Linus Torvalds (?) @ 2021-06-30 16:42 ` Peter Xu 2021-06-30 18:03 ` Linus Torvalds -1 siblings, 1 reply; 530+ messages in thread From: Peter Xu @ 2021-06-30 16:42 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne [-- Attachment #1: Type: text/plain, Size: 5239 bytes --] On Tue, Jun 29, 2021 at 07:25:42PM -0700, Linus Torvalds wrote: > On Tue, Jun 29, 2021 at 6:39 PM Peter Xu <peterx@redhat.com> wrote: > > > > And since MM_CP_DIRTY_ACCT implies "VM_WRITE|VM_SHARED" all set, above should > > be a slightly faster version of below: > > That's way too subtle, particularly since the MM_CP_DIRTY_ACCT logic > comes from another file entirely. > > I don't think it's even faster, considering that presumably the > anonymous mapping case is the common one, and that's the one that > needs all the extra tests, it's likely better to _not_ test that very > subtle flag at all, and just doing the straightforward and obvious > tests that are understandable _locally_. > > So I claim that it's > > (a) not an optimization at all > > (b) completely locally unintuitive and unreadable > > > Again, I think in all cases some more comment should be good indeed.. > > I really want more than a comment. I want that MM_CP_DIRTY_ACCT bit > testing gone. My understanding is that MM_CP_DIRTY_ACCT contains all check results from vma_wants_writenotify(), so if we drop it we'd need to have something like that to be checked within change_pte_range(), which is again slower (I have totally no idea how slow to check vma->vm_flags & VM_WRITE, but moving the whole vma_wants_writenotify here is definitely even slower). > > The only point where it makes sense to check MM_CP_DIRTY_ACCT is > within the context of "is the page already dirty". > > So I think the logic should be something along the lines of > > - first: > > if (!(vma->vm_flags & VM_WRITE)) > return false; > > because that logic is set in stone, and true regardless of anything > else. If the vma isn't writable, we're not going to set the write bit. > End of story. > > - then, check the vma_is_anonumous() case: > > if (vma_is_anonymous(vma)) > return page_count(pte_page(pte)) == 1; > > because if it's a writable mapping, and anonymous, then we can > mark it writable if we're the exclusive owners of that page. Shouldn't we still at least checks [soft-]dirty bits and uffd-wp bits to make sure it's either not dirty tracked or uffd wr-protected? Say, IMHO it's possible that soft-dirty tracking enabled on this anonymous vma range, then we still depend on the write bit removed to set the soft-dirty later in the fault handler. > > - and THEN we can handle the "ok, shared mapping, now let's start > thinking about dirty accounting" cases. > > Make it obvious and correct. This is not a sequence where you should > try to (incorrectly) optimize away individual instructions. Yes I still fully agree it's very un-obvious. So far the best thing I can come up with is something like below (patch attached too but not yet tested). I moved VM_WRITE out so hopefully it'll be very clear; then I also rearranged the checks so the final outcome looks like below: static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, unsigned long cp_flags) { /* * It is unclear whether this optimization can be done safely for NUMA * pages. */ if (cp_flags & MM_CP_PROT_NUMA) return false; /* * Never apply write bit if VM_WRITE not set. Note that this is * actually checked for VM_SHARED when MM_CP_DIRTY_ACCT is set, so * logically we only need to check it for !MM_CP_DIRTY_ACCT, but just * make it even more obvious. */ if (!(vma->vm_flags & VM_WRITE)) return false; /* * Don't do this optimization for clean pages as we need to be notified * of the transition from clean to dirty. */ if (!pte_dirty(pte)) return false; /* Same for softdirty. */ if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) return false; /* * For userfaultfd the user program needs to monitor write faults so we * can't do this optimization. */ if (pte_uffd_wp(pte)) return false; /* * MM_CP_DIRTY_ACCT indicates that we can always make the page writable * regardless of the number of references. Time to set the write bit. */ if (cp_flags & MM_CP_DIRTY_ACCT) return true; /* * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit * early if it's anonymous page and we exclusively own it. */ if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) return true; /* Don't play any trick */ return false; } The logic should be the same as before, it's just that we'll do an extra check on VM_WRITE for MM_CP_DIRTY_ACCT but assuming it's ok. Another side note is that I still think the VM_SOFTDIRTY check is wrong in may_avoid_write_fault() and even in the old code (I mentioned it previously when reviewing the patch), as !VM_SOFTDIRTY should mean soft dirty tracking enabled while VM_SOFTDIRTY means disabled. So I wonder whether it should be: - if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) + if (!pte_soft_dirty(pte) && !(vma->vm_flags & VM_SOFTDIRTY)) However I didn't touch it up there as it may need more justifications (I feel it's okay in the old code, as vma_wants_writenotify actually checks it too and in the right way; however after the anonymous fast path it seems to prone to error if it's anonymous; I'll check later). Thanks, -- Peter Xu [-- Attachment #2: 0001-mm-mprotect-Optimize-layout-of-may_avoid_write_fault.patch --] [-- Type: text/plain, Size: 2964 bytes --] From 4fb32ad7c949d5ec6b6ea364d3388b50bf674c9c Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx@redhat.com> Date: Wed, 30 Jun 2021 12:20:12 -0400 Subject: [PATCH] mm/mprotect: Optimize layout of may_avoid_write_fault() Firstly move VM_WRITE check to be outside of !MM_CP_DIRTY_ACCT chunk, so as to make it clear that we won't accidentally set the write bit to !VM_WRITE vmas. The old logic is hard to read in that it was written in reversed logic. Put things backward by moving the soft-dirty and uffd-wp checks earlier. Make the NUMA check even earlier than those as it's a cheap check and straightforward. Make the only "return true" case to be either the MM_CP_DIRTY_ACCT (which stands for the VM_SHARED cases when write bit can be applied), or the special anonymous page when we exclusively own it. Signed-off-by: Peter Xu <peterx@redhat.com> --- mm/mprotect.c | 39 +++++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/mm/mprotect.c b/mm/mprotect.c index 4cb240fd9936..3977bfd55f62 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -40,17 +40,20 @@ static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, unsigned long cp_flags) { /* - * The dirty accountable bit indicates that we can always make the page - * writable regardless of the number of references. + * It is unclear whether this optimization can be done safely for NUMA + * pages. */ - if (!(cp_flags & MM_CP_DIRTY_ACCT)) { - /* Otherwise, we must have exclusive access to the page. */ - if (!(vma_is_anonymous(vma) && (vma->vm_flags & VM_WRITE))) - return false; + if (cp_flags & MM_CP_PROT_NUMA) + return false; - if (page_count(pte_page(pte)) != 1) - return false; - } + /* + * Never apply write bit if VM_WRITE not set. Note that this is + * actually checked for VM_SHARED when MM_CP_DIRTY_ACCT is set, so + * logically we only need to check it for !MM_CP_DIRTY_ACCT, but just + * make it even more obvious. + */ + if (!(vma->vm_flags & VM_WRITE)) + return false; /* * Don't do this optimization for clean pages as we need to be notified @@ -71,13 +74,21 @@ static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, return false; /* - * It is unclear whether this optimization can be done safely for NUMA - * pages. + * MM_CP_DIRTY_ACCT indicates that we can always make the page writable + * regardless of the number of references. Time to set the write bit. */ - if (cp_flags & MM_CP_PROT_NUMA) - return false; + if (cp_flags & MM_CP_DIRTY_ACCT) + return true; + + /* + * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit + * early if it's anonymous page and we exclusively own it. + */ + if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) + return true; - return true; + /* Don't play any trick */ + return false; } static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, -- 2.31.1 ^ permalink raw reply related [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-30 16:42 ` Peter Xu @ 2021-06-30 18:03 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-30 18:03 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Wed, Jun 30, 2021 at 9:42 AM Peter Xu <peterx@redhat.com> wrote: > > Yes I still fully agree it's very un-obvious. So far the best thing I can come > up with is something like below (patch attached too but not yet tested). I > moved VM_WRITE out so hopefully it'll be very clear; then I also rearranged the > checks so the final outcome looks like below: > > static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, > unsigned long cp_flags) > { > /* > * It is unclear whether this optimization can be done safely for NUMA > * pages. > */ > if (cp_flags & MM_CP_PROT_NUMA) > return false; Please just put that VM_WRITE test first. It's the one that really *matters*. There's no "it's unclear if" about that part. Just handle the obvious and important check first. Yeah, yeah, they both return false, so order doesn't matter from a semantic standpoint, but from a clarity standpoint just do the clear and unambiguous and security-relevant test first. The rest of the tests are implementation details, the VM_WRITE test is fundamental behavior. It's the one that made me worry about this patch in the first place. > /* > * Don't do this optimization for clean pages as we need to be notified > * of the transition from clean to dirty. > */ > if (!pte_dirty(pte)) > return false; > > /* Same for softdirty. */ > if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) > return false; > > /* > * For userfaultfd the user program needs to monitor write faults so we > * can't do this optimization. > */ > if (pte_uffd_wp(pte)) > return false; So all of these are a bit special. Why? Because if I look at the actual page fault path, these are not the tests there. I'd really like to have some obvious situation where we keep this "make it writable" in sync with what would actually happen on a write fault when it's not writable. And it's not at all obvious to me for these cases. The do_wp_page() code doesn't even use pte_uffd_wp(). It uses userfaultfd_pte_wp(vma, pte), and I don't even know why. Yes, I can see the code (it additionally tests the VM_UFFD_WP flag in the vma), but a number of other paths then only do that pte_uffd_wp() test. I get the feeling that we really should try to match what the do_wp_page() path does, though. Which brings up another issue: the do_wp_page() path treats PageKsm() pages differently. And it locks the page before double-checking the page count. Why does mprotect() not need to do the same thing? I think this has come up before, and "change_protection()" can get called with the mmap_sem held just for reading - see userfaultfd - so it has all the same issues as a page fault does, afaik. > /* > * MM_CP_DIRTY_ACCT indicates that we can always make the page writable > * regardless of the number of references. Time to set the write bit. > */ > if (cp_flags & MM_CP_DIRTY_ACCT) > return true; > > /* > * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit > * early if it's anonymous page and we exclusively own it. > */ > if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) > return true; > > /* Don't play any trick */ > return false; > } > > The logic should be the same as before, it's just that we'll do an extra check > on VM_WRITE for MM_CP_DIRTY_ACCT but assuming it's ok. See above. I don't think the logic before was all that clear either. The one case that is clear is that if it's a shared mapping, and MM_CP_DIRTY_ACCT is set, and it was already dirty (and softdirty), then it's ok., That's the old code. I don't like how the old code was written (because I think that MM_CP_DIRTY_ACCT bit wasx too subtle), but I think the old code was at least correct. The new code, it just worries me. It adds all those new cases for when we can make the page writable early - that's the whole point of the patch, after all - but my point here is that it's not at all obvious that those new cases are actually correct. MAYBE it's all correct. I'm not saying it's wrong. I'm just saying it's not _obvious_ that it's correct. What about that page_count() test, for example: it has a comment, it looks obvious, but it's very different from what do_wp_page() does. So what happens if we have a page-out at the same time that turns that page into a swap cache page, and increments the page count? What about that race? Do we end up with a writable page that is shared with a swap cache entry? Is that ok? Why isn't it ok in the page fault case? See why this patch worries me so much? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once @ 2021-06-30 18:03 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-06-30 18:03 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Wed, Jun 30, 2021 at 9:42 AM Peter Xu <peterx@redhat.com> wrote: > > Yes I still fully agree it's very un-obvious. So far the best thing I can come > up with is something like below (patch attached too but not yet tested). I > moved VM_WRITE out so hopefully it'll be very clear; then I also rearranged the > checks so the final outcome looks like below: > > static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, > unsigned long cp_flags) > { > /* > * It is unclear whether this optimization can be done safely for NUMA > * pages. > */ > if (cp_flags & MM_CP_PROT_NUMA) > return false; Please just put that VM_WRITE test first. It's the one that really *matters*. There's no "it's unclear if" about that part. Just handle the obvious and important check first. Yeah, yeah, they both return false, so order doesn't matter from a semantic standpoint, but from a clarity standpoint just do the clear and unambiguous and security-relevant test first. The rest of the tests are implementation details, the VM_WRITE test is fundamental behavior. It's the one that made me worry about this patch in the first place. > /* > * Don't do this optimization for clean pages as we need to be notified > * of the transition from clean to dirty. > */ > if (!pte_dirty(pte)) > return false; > > /* Same for softdirty. */ > if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) > return false; > > /* > * For userfaultfd the user program needs to monitor write faults so we > * can't do this optimization. > */ > if (pte_uffd_wp(pte)) > return false; So all of these are a bit special. Why? Because if I look at the actual page fault path, these are not the tests there. I'd really like to have some obvious situation where we keep this "make it writable" in sync with what would actually happen on a write fault when it's not writable. And it's not at all obvious to me for these cases. The do_wp_page() code doesn't even use pte_uffd_wp(). It uses userfaultfd_pte_wp(vma, pte), and I don't even know why. Yes, I can see the code (it additionally tests the VM_UFFD_WP flag in the vma), but a number of other paths then only do that pte_uffd_wp() test. I get the feeling that we really should try to match what the do_wp_page() path does, though. Which brings up another issue: the do_wp_page() path treats PageKsm() pages differently. And it locks the page before double-checking the page count. Why does mprotect() not need to do the same thing? I think this has come up before, and "change_protection()" can get called with the mmap_sem held just for reading - see userfaultfd - so it has all the same issues as a page fault does, afaik. > /* > * MM_CP_DIRTY_ACCT indicates that we can always make the page writable > * regardless of the number of references. Time to set the write bit. > */ > if (cp_flags & MM_CP_DIRTY_ACCT) > return true; > > /* > * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit > * early if it's anonymous page and we exclusively own it. > */ > if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) > return true; > > /* Don't play any trick */ > return false; > } > > The logic should be the same as before, it's just that we'll do an extra check > on VM_WRITE for MM_CP_DIRTY_ACCT but assuming it's ok. See above. I don't think the logic before was all that clear either. The one case that is clear is that if it's a shared mapping, and MM_CP_DIRTY_ACCT is set, and it was already dirty (and softdirty), then it's ok., That's the old code. I don't like how the old code was written (because I think that MM_CP_DIRTY_ACCT bit wasx too subtle), but I think the old code was at least correct. The new code, it just worries me. It adds all those new cases for when we can make the page writable early - that's the whole point of the patch, after all - but my point here is that it's not at all obvious that those new cases are actually correct. MAYBE it's all correct. I'm not saying it's wrong. I'm just saying it's not _obvious_ that it's correct. What about that page_count() test, for example: it has a comment, it looks obvious, but it's very different from what do_wp_page() does. So what happens if we have a page-out at the same time that turns that page into a swap cache page, and increments the page count? What about that race? Do we end up with a writable page that is shared with a swap cache entry? Is that ok? Why isn't it ok in the page fault case? See why this patch worries me so much? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-06-30 18:03 ` Linus Torvalds (?) @ 2021-07-01 1:27 ` Peter Xu 2021-07-01 18:29 ` Linus Torvalds -1 siblings, 1 reply; 530+ messages in thread From: Peter Xu @ 2021-07-01 1:27 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, kostyak, Linux-MM, mm-commits, Peter Collingbourne On Wed, Jun 30, 2021 at 11:03:25AM -0700, Linus Torvalds wrote: > On Wed, Jun 30, 2021 at 9:42 AM Peter Xu <peterx@redhat.com> wrote: > > > > Yes I still fully agree it's very un-obvious. So far the best thing I can come > > up with is something like below (patch attached too but not yet tested). I > > moved VM_WRITE out so hopefully it'll be very clear; then I also rearranged the > > checks so the final outcome looks like below: > > > > static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, > > unsigned long cp_flags) > > { > > /* > > * It is unclear whether this optimization can be done safely for NUMA > > * pages. > > */ > > if (cp_flags & MM_CP_PROT_NUMA) > > return false; > > Please just put that VM_WRITE test first. It's the one that really > *matters*. There's no "it's unclear if" about that part. Just handle > the obvious and important check first. > > Yeah, yeah, they both return false, so order doesn't matter from a > semantic standpoint, but from a clarity standpoint just do the clear > and unambiguous and security-relevant test first. > > The rest of the tests are implementation details, the VM_WRITE test is > fundamental behavior. It's the one that made me worry about this patch > in the first place. Sure. > > > /* > > * Don't do this optimization for clean pages as we need to be notified > > * of the transition from clean to dirty. > > */ > > if (!pte_dirty(pte)) > > return false; > > > > /* Same for softdirty. */ > > if (!pte_soft_dirty(pte) && (vma->vm_flags & VM_SOFTDIRTY)) > > return false; > > > > /* > > * For userfaultfd the user program needs to monitor write faults so we > > * can't do this optimization. > > */ > > if (pte_uffd_wp(pte)) > > return false; > > So all of these are a bit special. > > Why? Because if I look at the actual page fault path, these are not > the tests there. > > I'd really like to have some obvious situation where we keep this > "make it writable" in sync with what would actually happen on a write > fault when it's not writable. > > And it's not at all obvious to me for these cases. > > The do_wp_page() code doesn't even use pte_uffd_wp(). It uses > userfaultfd_pte_wp(vma, pte), and I don't even know why. Yes, I can > see the code (it additionally tests the VM_UFFD_WP flag in the vma), > but a number of other paths then only do that pte_uffd_wp() test. The vma check is a safety net to make sure it's not the case e.g. when the vma has already unregistered from uffd-wp while there's uffd-wp bit left over. E.g., currently UFFDIO_UNREGISTER is lazy on removing uffd-wp bits that applied to ptes, so even vma is unregistered there could still have pte_uffd_wp() being true for some ptes. That vma check makes sure when it happens the uffd-wp bit will be auto-removed. > > I get the feeling that we really should try to match what the > do_wp_page() path does, though. Makes sense. > > Which brings up another issue: the do_wp_page() path treats PageKsm() > pages differently. And it locks the page before double-checking the > page count. > > Why does mprotect() not need to do the same thing? I think this has > come up before, and "change_protection()" can get called with the > mmap_sem held just for reading - see userfaultfd - so it has all the > same issues as a page fault does, afaik. Good point.. I overlooked ksm when reviewing the patch, while I should really have looked at do_wp_page() as you suggested (hmm.. the truth is I wasn't even aware of this patch and never planned to try to review it, until it breaks the uffd-wp anonymous tests in its initial versions when I was testing mmots...). Maybe something like this (to be squashed into the previously attached patch): ---8<--- diff --git a/mm/mprotect.c b/mm/mprotect.c index 3977bfd55f62..7aab30ac9c9f 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -39,12 +39,8 @@ static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, unsigned long cp_flags) { - /* - * It is unclear whether this optimization can be done safely for NUMA - * pages. - */ - if (cp_flags & MM_CP_PROT_NUMA) - return false; + struct page *page; + bool ret = false; /* * Never apply write bit if VM_WRITE not set. Note that this is @@ -55,6 +51,13 @@ static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, if (!(vma->vm_flags & VM_WRITE)) return false; + /* + * It is unclear whether this optimization can be done safely for NUMA + * pages. + */ + if (cp_flags & MM_CP_PROT_NUMA) + return false; + /* * Don't do this optimization for clean pages as we need to be notified * of the transition from clean to dirty. @@ -80,15 +83,22 @@ static bool may_avoid_write_fault(pte_t pte, struct vm_area_struct *vma, if (cp_flags & MM_CP_DIRTY_ACCT) return true; + page = pte_page(pte); + /* Best effort to take page lock, don't play trick if failed */ + if (!trylock_page(page)) + return false; + /* KSM pages needs COW; leave them be */ + if (PageKsm(page)) + goto unlock_fail; /* - * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit - * early if it's anonymous page and we exclusively own it. + * Othewise it means !MM_CP_DIRTY_ACCT and !KSM. We can only apply + * write bit early if it's anonymous page and we exclusively own it. */ - if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) - return true; - - /* Don't play any trick */ - return false; + if (vma_is_anonymous(vma) && (page_count(page) == 1)) + ret = true; +unlock_fail: + unlock_page(page); + return ret; } static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, ---8<--- I hope I didn't overlook something else.. Today when I was looking at ksm code, I found that I got lost on why we say "PageKsm() doesn't necessarily raise the page refcount", as in do_wp_page(). I was looking at replace_page() where, afaict, we still do proper refcounting for the stable nodes with "get_page(kpage)". I know I must missed something but I can't quickly tell. In all cases with above PageKsm check I think it'll be safe, and it's definitely clear that page lock will stablize PageKsm()'s return value, like do_wp_page(). > > > /* > > * MM_CP_DIRTY_ACCT indicates that we can always make the page writable > > * regardless of the number of references. Time to set the write bit. > > */ > > if (cp_flags & MM_CP_DIRTY_ACCT) > > return true; > > > > /* > > * Othewise it means !MM_CP_DIRTY_ACCT. We can only apply write bit > > * early if it's anonymous page and we exclusively own it. > > */ > > if (vma_is_anonymous(vma) && (page_count(pte_page(pte)) == 1)) > > return true; > > > > /* Don't play any trick */ > > return false; > > } > > > > The logic should be the same as before, it's just that we'll do an extra check > > on VM_WRITE for MM_CP_DIRTY_ACCT but assuming it's ok. > > See above. I don't think the logic before was all that clear either. > > The one case that is clear is that if it's a shared mapping, and > MM_CP_DIRTY_ACCT is set, and it was already dirty (and softdirty), > then it's ok., > > That's the old code. I don't like how the old code was written > (because I think that MM_CP_DIRTY_ACCT bit wasx too subtle), but I > think the old code was at least correct. > > The new code, it just worries me. It adds all those new cases for when > we can make the page writable early - that's the whole point of the > patch, after all - but my point here is that it's not at all obvious > that those new cases are actually correct. Yes agreed the MM_CP_DIRTY_ACCT bit is very subtle and not easy to get. It's just that I don't have a good idea to make it better, yet.. > > MAYBE it's all correct. I'm not saying it's wrong. I'm just saying > it's not _obvious_ that it's correct. > > What about that page_count() test, for example: it has a comment, it > looks obvious, but it's very different from what do_wp_page() does. So > what happens if we have a page-out at the same time that turns that > page into a swap cache page, and increments the page count? What about > that race? Do we end up with a writable page that is shared with a > swap cache entry? Is that ok? Why isn't it ok in the page fault case? That looks fine to me: when the race happens we must have checked page_count==1 first and granted the write bit, then add_to_swap_cache() happens after the page_count==1 check (as it takes another refcount, so >2 otherwise). Then it also means unmap mappings should happen even after that point. If my above understanding is correct, our newly installed pte will be zapped safely soon, but of course after we release the pgtable lock in change_pte_range(). Thanks, -- Peter Xu ^ permalink raw reply related [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-07-01 1:27 ` Peter Xu @ 2021-07-01 18:29 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-07-01 18:29 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, Kostya Kortchinsky, Linux-MM, mm-commits, Peter Collingbourne On Wed, Jun 30, 2021 at 6:27 PM Peter Xu <peterx@redhat.com> wrote: > > On Wed, Jun 30, 2021 at 11:03:25AM -0700, Linus Torvalds wrote: > > > > What about that page_count() test, for example: it has a comment, it > > looks obvious, but it's very different from what do_wp_page() does. So > > what happens if we have a page-out at the same time that turns that > > page into a swap cache page, and increments the page count? What about > > that race? Do we end up with a writable page that is shared with a > > swap cache entry? Is that ok? Why isn't it ok in the page fault case? > > That looks fine to me: when the race happens we must have checked page_count==1 > first and granted the write bit, then add_to_swap_cache() happens after the > page_count==1 check (as it takes another refcount, so >2 otherwise). Then it > also means unmap mappings should happen even after that point. If my above > understanding is correct, our newly installed pte will be zapped safely soon, > but of course after we release the pgtable lock in change_pte_range(). So if this is fine, then maybe we should just remove the page lock in the do_wp_page() path (and remove the PageKSM check while at it)? If it's not required by mprotect() to say "I can make the page writable directly", then it really shouldn't be required by the page fault path either. Which I'd love to do, and was really itching to do (it's a nasty lock), but I worried about it.. I'd hate to have mprotect do one thing, and page faulting do another thing, and not have some logic to why they have to be different. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once @ 2021-07-01 18:29 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-07-01 18:29 UTC (permalink / raw) To: Peter Xu Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, Kostya Kortchinsky, Linux-MM, mm-commits, Peter Collingbourne On Wed, Jun 30, 2021 at 6:27 PM Peter Xu <peterx@redhat.com> wrote: > > On Wed, Jun 30, 2021 at 11:03:25AM -0700, Linus Torvalds wrote: > > > > What about that page_count() test, for example: it has a comment, it > > looks obvious, but it's very different from what do_wp_page() does. So > > what happens if we have a page-out at the same time that turns that > > page into a swap cache page, and increments the page count? What about > > that race? Do we end up with a writable page that is shared with a > > swap cache entry? Is that ok? Why isn't it ok in the page fault case? > > That looks fine to me: when the race happens we must have checked page_count==1 > first and granted the write bit, then add_to_swap_cache() happens after the > page_count==1 check (as it takes another refcount, so >2 otherwise). Then it > also means unmap mappings should happen even after that point. If my above > understanding is correct, our newly installed pte will be zapped safely soon, > but of course after we release the pgtable lock in change_pte_range(). So if this is fine, then maybe we should just remove the page lock in the do_wp_page() path (and remove the PageKSM check while at it)? If it's not required by mprotect() to say "I can make the page writable directly", then it really shouldn't be required by the page fault path either. Which I'd love to do, and was really itching to do (it's a nasty lock), but I worried about it.. I'd hate to have mprotect do one thing, and page faulting do another thing, and not have some logic to why they have to be different. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once 2021-07-01 18:29 ` Linus Torvalds (?) @ 2021-07-06 1:24 ` Peter Xu -1 siblings, 0 replies; 530+ messages in thread From: Peter Xu @ 2021-07-06 1:24 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Andrea Arcangeli, Evgeniy Stepanov, Kostya Kortchinsky, Linux-MM, mm-commits, Peter Collingbourne (sorry for a very late reply) On Thu, Jul 01, 2021 at 11:29:50AM -0700, Linus Torvalds wrote: > On Wed, Jun 30, 2021 at 6:27 PM Peter Xu <peterx@redhat.com> wrote: > > > > On Wed, Jun 30, 2021 at 11:03:25AM -0700, Linus Torvalds wrote: > > > > > > What about that page_count() test, for example: it has a comment, it > > > looks obvious, but it's very different from what do_wp_page() does. So > > > what happens if we have a page-out at the same time that turns that > > > page into a swap cache page, and increments the page count? What about > > > that race? Do we end up with a writable page that is shared with a > > > swap cache entry? Is that ok? Why isn't it ok in the page fault case? > > > > That looks fine to me: when the race happens we must have checked page_count==1 > > first and granted the write bit, then add_to_swap_cache() happens after the > > page_count==1 check (as it takes another refcount, so >2 otherwise). Then it > > also means unmap mappings should happen even after that point. If my above > > understanding is correct, our newly installed pte will be zapped safely soon, > > but of course after we release the pgtable lock in change_pte_range(). > > So if this is fine, then maybe we should just remove the page lock in > the do_wp_page() path (and remove the PageKSM check while at it)? I could be wrong, but I thought the page lock in do_wp_page() is more for the PageKsm() race (e.g., to make sure we don't grant write to a page that is becoming a ksm page in parallel). > > If it's not required by mprotect() to say "I can make the page > writable directly", then it really shouldn't be required by the page > fault path either. > > Which I'd love to do, and was really itching to do (it's a nasty > lock), but I worried about it.. > > I'd hate to have mprotect do one thing, and page faulting do another > thing, and not have some logic to why they have to be different. Agreed; perhaps no need to be identical - I think the mprotect path can be even stricter than the fault page, as it's a fast-path only. It should never apply the write bit when the page fault path won't. So I think the original patch does need a justification on why it didn't handle ksm page while do_wp_page handled it. Thanks, -- Peter Xu ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 129/192] h8300: remove unused variable 2021-06-29 2:32 incoming Andrew Morton ` (127 preceding siblings ...) 2021-06-29 2:39 ` [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 130/192] mm/dmapool: use DEVICE_ATTR_RO macro Andrew Morton ` (62 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, jrdr.linux, linux-mm, lkp, mm-commits, rppt, torvalds, ysato From: Souptick Joarder <jrdr.linux@gmail.com> Subject: h8300: remove unused variable Kernel test robot throws below warning -> >> arch/h8300/kernel/setup.c:72:26: warning: Unused variable: region [unusedVariable] struct memblock_region *region; Fixed it by removing unused variable. Link: https://lkml.kernel.org/r/20210602185431.11416-1-jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reported-by: kernel test robot <lkp@intel.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/h8300/kernel/setup.c | 2 -- 1 file changed, 2 deletions(-) --- a/arch/h8300/kernel/setup.c~h8300-remove-unused-variable +++ a/arch/h8300/kernel/setup.c @@ -69,8 +69,6 @@ void __init h8300_fdt_init(void *fdt, ch static void __init bootmem_init(void) { - struct memblock_region *region; - memory_end = memory_start = 0; /* Find main memory where is the kernel */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 130/192] mm/dmapool: use DEVICE_ATTR_RO macro 2021-06-29 2:32 incoming Andrew Morton ` (128 preceding siblings ...) 2021-06-29 2:40 ` [patch 129/192] h8300: remove unused variable Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 131/192] mm, tracing: unify PFN format strings Andrew Morton ` (61 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andriy.shevchenko, linux-mm, mm-commits, torvalds, yuehaibing From: YueHaibing <yuehaibing@huawei.com> Subject: mm/dmapool: use DEVICE_ATTR_RO macro Use DEVICE_ATTR_RO() helper instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Link: https://lkml.kernel.org/r/20210524112852.34716-1-yuehaibing@huawei.com Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/dmapool.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/mm/dmapool.c~mm-dmapool-use-device_attr_ro-macro +++ a/mm/dmapool.c @@ -62,8 +62,7 @@ struct dma_page { /* cacheable header f static DEFINE_MUTEX(pools_lock); static DEFINE_MUTEX(pools_reg_lock); -static ssize_t -show_pools(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t pools_show(struct device *dev, struct device_attribute *attr, char *buf) { unsigned temp; unsigned size; @@ -103,7 +102,7 @@ show_pools(struct device *dev, struct de return PAGE_SIZE - size; } -static DEVICE_ATTR(pools, 0444, show_pools, NULL); +static DEVICE_ATTR_RO(pools); /** * dma_pool_create - Creates a pool of consistent memory blocks, for dma. _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 131/192] mm, tracing: unify PFN format strings 2021-06-29 2:32 incoming Andrew Morton ` (129 preceding siblings ...) 2021-06-29 2:40 ` [patch 130/192] mm/dmapool: use DEVICE_ATTR_RO macro Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 132/192] mm/page_alloc: add an alloc_pages_bulk_array_node() helper Andrew Morton ` (60 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hawk, ilias.apalodimas, linux-mm, mingo, mm-commits, rostedt, torvalds, vincent.whitchurch From: Vincent Whitchurch <vincent.whitchurch@axis.com> Subject: mm, tracing: unify PFN format strings Some trace event formats print PFNs as hex while others print them as decimal. This is rather annoying when attempting to grep through traces to understand what's going on with a particular page. $ git grep -ho 'pfn=[0x%lu]\+' include/trace/events/ | sort | uniq -c 11 pfn=0x%lx 12 pfn=%lu 2 pfn=%lx Printing as hex is in the majority in the trace events, and all the normal printks in mm/ also print PFNs as hex, so change all the PFN formats in the trace events to use 0x%lx. Link: https://lkml.kernel.org/r/20210602092608.1493-1-vincent.whitchurch@axis.com Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jesper Dangaard Brouer <hawk@kernel.org> Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/trace/events/cma.h | 4 ++-- include/trace/events/filemap.h | 2 +- include/trace/events/kmem.h | 12 ++++++------ include/trace/events/page_pool.h | 4 ++-- include/trace/events/pagemap.h | 4 ++-- include/trace/events/vmscan.h | 2 +- 6 files changed, 14 insertions(+), 14 deletions(-) --- a/include/trace/events/cma.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/cma.h @@ -31,7 +31,7 @@ DECLARE_EVENT_CLASS(cma_alloc_class, __entry->align = align; ), - TP_printk("name=%s pfn=%lx page=%p count=%lu align=%u", + TP_printk("name=%s pfn=0x%lx page=%p count=%lu align=%u", __get_str(name), __entry->pfn, __entry->page, @@ -60,7 +60,7 @@ TRACE_EVENT(cma_release, __entry->count = count; ), - TP_printk("name=%s pfn=%lx page=%p count=%lu", + TP_printk("name=%s pfn=0x%lx page=%p count=%lu", __get_str(name), __entry->pfn, __entry->page, --- a/include/trace/events/filemap.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/filemap.h @@ -36,7 +36,7 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_c __entry->s_dev = page->mapping->host->i_rdev; ), - TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu", + TP_printk("dev %d:%d ino %lx page=%p pfn=0x%lx ofs=%lu", MAJOR(__entry->s_dev), MINOR(__entry->s_dev), __entry->i_ino, pfn_to_page(__entry->pfn), --- a/include/trace/events/kmem.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/kmem.h @@ -173,7 +173,7 @@ TRACE_EVENT(mm_page_free, __entry->order = order; ), - TP_printk("page=%p pfn=%lu order=%d", + TP_printk("page=%p pfn=0x%lx order=%d", pfn_to_page(__entry->pfn), __entry->pfn, __entry->order) @@ -193,7 +193,7 @@ TRACE_EVENT(mm_page_free_batched, __entry->pfn = page_to_pfn(page); ), - TP_printk("page=%p pfn=%lu order=0", + TP_printk("page=%p pfn=0x%lx order=0", pfn_to_page(__entry->pfn), __entry->pfn) ); @@ -219,7 +219,7 @@ TRACE_EVENT(mm_page_alloc, __entry->migratetype = migratetype; ), - TP_printk("page=%p pfn=%lu order=%d migratetype=%d gfp_flags=%s", + TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d gfp_flags=%s", __entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL, __entry->pfn != -1UL ? __entry->pfn : 0, __entry->order, @@ -245,7 +245,7 @@ DECLARE_EVENT_CLASS(mm_page, __entry->migratetype = migratetype; ), - TP_printk("page=%p pfn=%lu order=%u migratetype=%d percpu_refill=%d", + TP_printk("page=%p pfn=0x%lx order=%u migratetype=%d percpu_refill=%d", __entry->pfn != -1UL ? pfn_to_page(__entry->pfn) : NULL, __entry->pfn != -1UL ? __entry->pfn : 0, __entry->order, @@ -278,7 +278,7 @@ TRACE_EVENT(mm_page_pcpu_drain, __entry->migratetype = migratetype; ), - TP_printk("page=%p pfn=%lu order=%d migratetype=%d", + TP_printk("page=%p pfn=0x%lx order=%d migratetype=%d", pfn_to_page(__entry->pfn), __entry->pfn, __entry->order, __entry->migratetype) ); @@ -312,7 +312,7 @@ TRACE_EVENT(mm_page_alloc_extfrag, get_pageblock_migratetype(page)); ), - TP_printk("page=%p pfn=%lu alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d", + TP_printk("page=%p pfn=0x%lx alloc_order=%d fallback_order=%d pageblock_order=%d alloc_migratetype=%d fallback_migratetype=%d fragmenting=%d change_ownership=%d", pfn_to_page(__entry->pfn), __entry->pfn, __entry->alloc_order, --- a/include/trace/events/pagemap.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/pagemap.h @@ -46,7 +46,7 @@ TRACE_EVENT(mm_lru_insertion, ), /* Flag format is based on page-types.c formatting for pagemap */ - TP_printk("page=%p pfn=%lu lru=%d flags=%s%s%s%s%s%s", + TP_printk("page=%p pfn=0x%lx lru=%d flags=%s%s%s%s%s%s", __entry->page, __entry->pfn, __entry->lru, @@ -75,7 +75,7 @@ TRACE_EVENT(mm_lru_activate, ), /* Flag format is based on page-types.c formatting for pagemap */ - TP_printk("page=%p pfn=%lu", __entry->page, __entry->pfn) + TP_printk("page=%p pfn=0x%lx", __entry->page, __entry->pfn) ); --- a/include/trace/events/page_pool.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/page_pool.h @@ -60,7 +60,7 @@ TRACE_EVENT(page_pool_state_release, __entry->pfn = page_to_pfn(page); ), - TP_printk("page_pool=%p page=%p pfn=%lu release=%u", + TP_printk("page_pool=%p page=%p pfn=0x%lx release=%u", __entry->pool, __entry->page, __entry->pfn, __entry->release) ); @@ -85,7 +85,7 @@ TRACE_EVENT(page_pool_state_hold, __entry->pfn = page_to_pfn(page); ), - TP_printk("page_pool=%p page=%p pfn=%lu hold=%u", + TP_printk("page_pool=%p page=%p pfn=0x%lx hold=%u", __entry->pool, __entry->page, __entry->pfn, __entry->hold) ); --- a/include/trace/events/vmscan.h~mm-tracing-unify-pfn-format-strings +++ a/include/trace/events/vmscan.h @@ -330,7 +330,7 @@ TRACE_EVENT(mm_vmscan_writepage, page_is_file_lru(page)); ), - TP_printk("page=%p pfn=%lu flags=%s", + TP_printk("page=%p pfn=0x%lx flags=%s", pfn_to_page(__entry->pfn), __entry->pfn, show_reclaim_flags(__entry->reclaim_flags)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 132/192] mm/page_alloc: add an alloc_pages_bulk_array_node() helper 2021-06-29 2:32 incoming Andrew Morton ` (130 preceding siblings ...) 2021-06-29 2:40 ` [patch 131/192] mm, tracing: unify PFN format strings Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 133/192] mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() Andrew Morton ` (59 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hdanton, linux-mm, mgorman, mhocko, mm-commits, npiggin, oleksiy.avramchenko, rostedt, torvalds, urezki, willy From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Subject: mm/page_alloc: add an alloc_pages_bulk_array_node() helper Patch series "vmalloc() vs bulk allocator", v2. This patch (of 3): Add a "node" variant of the alloc_pages_bulk_array() function. The helper guarantees that a __alloc_pages_bulk() is invoked with a valid NUMA node ID. Link: https://lkml.kernel.org/r/20210516202056.2120-1-urezki@gmail.com Link: https://lkml.kernel.org/r/20210516202056.2120-2-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Mel Gorman <mgorman@suse.de> Cc: Matthew Wilcox <willy@infradead.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/gfp.h | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/include/linux/gfp.h~mm-page_alloc-add-an-alloc_pages_bulk_array_node-helper +++ a/include/linux/gfp.h @@ -536,6 +536,15 @@ alloc_pages_bulk_array(gfp_t gfp, unsign return __alloc_pages_bulk(gfp, numa_mem_id(), NULL, nr_pages, NULL, page_array); } +static inline unsigned long +alloc_pages_bulk_array_node(gfp_t gfp, int nid, unsigned long nr_pages, struct page **page_array) +{ + if (nid == NUMA_NO_NODE) + nid = numa_mem_id(); + + return __alloc_pages_bulk(gfp, nid, NULL, nr_pages, NULL, page_array); +} + /* * Allocate pages, preferring the node given as nid. The node must be valid and * online. For more general interface, see alloc_pages_node(). _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 133/192] mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() 2021-06-29 2:32 incoming Andrew Morton ` (131 preceding siblings ...) 2021-06-29 2:40 ` [patch 132/192] mm/page_alloc: add an alloc_pages_bulk_array_node() helper Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 134/192] mm/vmalloc: print a warning message first on failure Andrew Morton ` (58 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hdanton, linux-mm, mgorman, mhocko, mm-commits, npiggin, oleksiy.avramchenko, rostedt, torvalds, urezki, willy From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Subject: mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() Recently there has been introduced a page bulk allocator for users which need to get number of pages per one call request. For order-0 pages switch to an alloc_pages_bulk_array_node() instead of alloc_pages_node(), the reason is the former is not capable of allocating set of pages, thus a one call is per one page. Second, according to my tests the bulk allocator uses less cycles even for scenarios when only one page is requested. Running the "perf" on same test case shows below difference: <default> - 45.18% __vmalloc_node - __vmalloc_node_range - 35.60% __alloc_pages - get_page_from_freelist 3.36% __list_del_entry_valid 3.00% check_preemption_disabled 1.42% prep_new_page <default> <patch> - 31.00% __vmalloc_node - __vmalloc_node_range - 14.48% __alloc_pages_bulk 3.22% __list_del_entry_valid - 0.83% __alloc_pages get_page_from_freelist <patch> The "test_vmalloc.sh" also shows performance improvements: fix_size_alloc_test_4MB loops: 1000000 avg: 89105095 usec fix_size_alloc_test loops: 1000000 avg: 513672 usec full_fit_alloc_test loops: 1000000 avg: 748900 usec long_busy_list_alloc_test loops: 1000000 avg: 8043038 usec random_size_alloc_test loops: 1000000 avg: 4028582 usec fix_align_alloc_test loops: 1000000 avg: 1457671 usec fix_size_alloc_test_4MB loops: 1000000 avg: 62083711 usec fix_size_alloc_test loops: 1000000 avg: 449207 usec full_fit_alloc_test loops: 1000000 avg: 735985 usec long_busy_list_alloc_test loops: 1000000 avg: 5176052 usec random_size_alloc_test loops: 1000000 avg: 2589252 usec fix_align_alloc_test loops: 1000000 avg: 1365009 usec For example 4MB allocations illustrates ~30% gain, all the rest is also better. Link: https://lkml.kernel.org/r/20210516202056.2120-3-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Hillf Danton <hdanton@sina.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmalloc.c | 76 +++++++++++++++++++++++++++---------------------- 1 file changed, 42 insertions(+), 34 deletions(-) --- a/mm/vmalloc.c~mm-vmalloc-switch-to-bulk-allocator-in-__vmalloc_area_node +++ a/mm/vmalloc.c @@ -2768,8 +2768,6 @@ static void *__vmalloc_area_node(struct unsigned long array_size; unsigned int nr_small_pages = size >> PAGE_SHIFT; unsigned int page_order; - struct page **pages; - unsigned int i; array_size = (unsigned long)nr_small_pages * sizeof(struct page *); gfp_mask |= __GFP_NOWARN; @@ -2778,13 +2776,13 @@ static void *__vmalloc_area_node(struct /* Please note that the recursion is strictly bounded. */ if (array_size > PAGE_SIZE) { - pages = __vmalloc_node(array_size, 1, nested_gfp, node, + area->pages = __vmalloc_node(array_size, 1, nested_gfp, node, area->caller); } else { - pages = kmalloc_node(array_size, nested_gfp, node); + area->pages = kmalloc_node(array_size, nested_gfp, node); } - if (!pages) { + if (!area->pages) { free_vm_area(area); warn_alloc(gfp_mask, NULL, "vmalloc size %lu allocation failure: " @@ -2793,43 +2791,53 @@ static void *__vmalloc_area_node(struct return NULL; } - area->pages = pages; - area->nr_pages = nr_small_pages; + area->nr_pages = 0; set_vm_area_page_order(area, page_shift - PAGE_SHIFT); - page_order = vm_area_page_order(area); - /* - * Careful, we allocate and map page_order pages, but tracking is done - * per PAGE_SIZE page so as to keep the vm_struct APIs independent of - * the physical/mapped size. - */ - for (i = 0; i < area->nr_pages; i += 1U << page_order) { - struct page *page; - int p; - - /* Compound pages required for remap_vmalloc_page */ - page = alloc_pages_node(node, gfp_mask | __GFP_COMP, page_order); - if (unlikely(!page)) { - /* Successfully allocated i pages, free them in __vfree() */ - area->nr_pages = i; - atomic_long_add(area->nr_pages, &nr_vmalloc_pages); - warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "page order %u allocation failed", - area->nr_pages * PAGE_SIZE, page_order); - goto fail; - } + if (!page_order) { + area->nr_pages = alloc_pages_bulk_array_node( + gfp_mask, node, nr_small_pages, area->pages); + } else { + /* + * Careful, we allocate and map page_order pages, but tracking is done + * per PAGE_SIZE page so as to keep the vm_struct APIs independent of + * the physical/mapped size. + */ + while (area->nr_pages < nr_small_pages) { + struct page *page; + int i; + + /* Compound pages required for remap_vmalloc_page */ + page = alloc_pages_node(node, gfp_mask | __GFP_COMP, page_order); + if (unlikely(!page)) + break; + + for (i = 0; i < (1U << page_order); i++) + area->pages[area->nr_pages + i] = page + i; - for (p = 0; p < (1U << page_order); p++) - area->pages[i + p] = page + p; + if (gfpflags_allow_blocking(gfp_mask)) + cond_resched(); - if (gfpflags_allow_blocking(gfp_mask)) - cond_resched(); + area->nr_pages += 1U << page_order; + } } + atomic_long_add(area->nr_pages, &nr_vmalloc_pages); - if (vmap_pages_range(addr, addr + size, prot, pages, page_shift) < 0) { + /* + * If not enough pages were obtained to accomplish an + * allocation request, free them via __vfree() if any. + */ + if (area->nr_pages != nr_small_pages) { + warn_alloc(gfp_mask, NULL, + "vmalloc size %lu allocation failure: " + "page order %u allocation failed", + area->nr_pages * PAGE_SIZE, page_order); + goto fail; + } + + if (vmap_pages_range(addr, addr + size, prot, area->pages, page_shift) < 0) { warn_alloc(gfp_mask, NULL, "vmalloc size %lu allocation failure: " "failed to map pages", _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 134/192] mm/vmalloc: print a warning message first on failure 2021-06-29 2:32 incoming Andrew Morton ` (132 preceding siblings ...) 2021-06-29 2:40 ` [patch 133/192] mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 135/192] mm/vmalloc: remove quoted strings split across lines Andrew Morton ` (57 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hdanton, linux-mm, mgorman, mhocko, mm-commits, npiggin, oleksiy.avramchenko, rostedt, torvalds, urezki, willy From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Subject: mm/vmalloc: print a warning message first on failure When a memory allocation for array of pages are not succeed emit a warning message as a first step and then perform the further cleanup. The reason it should be done in a right order is the clean up function which is free_vm_area() can potentially also follow its error paths what can lead to confusion what was broken first. Link: https://lkml.kernel.org/r/20210516202056.2120-4-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/vmalloc.c~mm-vmalloc-print-a-warning-message-first-on-failure +++ a/mm/vmalloc.c @@ -2783,11 +2783,11 @@ static void *__vmalloc_area_node(struct } if (!area->pages) { - free_vm_area(area); warn_alloc(gfp_mask, NULL, "vmalloc size %lu allocation failure: " "page array size %lu allocation failed", nr_small_pages * PAGE_SIZE, array_size); + free_vm_area(area); return NULL; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 135/192] mm/vmalloc: remove quoted strings split across lines 2021-06-29 2:32 incoming Andrew Morton ` (133 preceding siblings ...) 2021-06-29 2:40 ` [patch 134/192] mm/vmalloc: print a warning message first on failure Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 136/192] mm/vmalloc: fallback to a single page allocator Andrew Morton ` (56 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hch, hdanton, linux-mm, mgorman, mhocko, mm-commits, npiggin, oleksiy.avramchenko, rostedt, torvalds, urezki, willy From: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Subject: mm/vmalloc: remove quoted strings split across lines A checkpatch.pl script complains on splitting a text across lines. It is because if a user wants to find an entire string he or she will not succeeded. <snip> WARNING: quoted string split across lines + "vmalloc size %lu allocation failure: " + "page order %u allocation failed", total: 0 errors, 1 warnings, 10 lines checked <snip> Link: https://lkml.kernel.org/r/20210521204359.19943-1-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmalloc.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) --- a/mm/vmalloc.c~mm-vmalloc-remove-quoted-string-split-across-lines +++ a/mm/vmalloc.c @@ -2784,9 +2784,8 @@ static void *__vmalloc_area_node(struct if (!area->pages) { warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "page array size %lu allocation failed", - nr_small_pages * PAGE_SIZE, array_size); + "vmalloc error: size %lu, failed to allocated page array size %lu", + nr_small_pages * PAGE_SIZE, array_size); free_vm_area(area); return NULL; } @@ -2831,17 +2830,15 @@ static void *__vmalloc_area_node(struct */ if (area->nr_pages != nr_small_pages) { warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "page order %u allocation failed", + "vmalloc error: size %lu, page order %u, failed to allocate pages", area->nr_pages * PAGE_SIZE, page_order); goto fail; } if (vmap_pages_range(addr, addr + size, prot, area->pages, page_shift) < 0) { warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "failed to map pages", - area->nr_pages * PAGE_SIZE); + "vmalloc error: size %lu, failed to map pages", + area->nr_pages * PAGE_SIZE); goto fail; } @@ -2886,8 +2883,8 @@ void *__vmalloc_node_range(unsigned long if ((size >> PAGE_SHIFT) > totalram_pages()) { warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "exceeds total pages", real_size); + "vmalloc error: size %lu, exceeds total pages", + real_size); return NULL; } @@ -2918,8 +2915,8 @@ again: gfp_mask, caller); if (!area) { warn_alloc(gfp_mask, NULL, - "vmalloc size %lu allocation failure: " - "vm_struct allocation failed", real_size); + "vmalloc error: size %lu, vm_struct allocation failed", + real_size); goto fail; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 136/192] mm/vmalloc: fallback to a single page allocator 2021-06-29 2:32 incoming Andrew Morton ` (134 preceding siblings ...) 2021-06-29 2:40 ` [patch 135/192] mm/vmalloc: remove quoted strings split across lines Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 137/192] mm: vmalloc: add cond_resched() in __vunmap() Andrew Morton ` (55 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, hch, hdanton, linux-mm, mgorman, mhocko, mm-commits, npiggin, oleksiy.avramchenko, rostedt, torvalds, urezki, willy From: Uladzislau Rezki <urezki@gmail.com> Subject: mm/vmalloc: fallback to a single page allocator Currently for order-0 pages we use a bulk-page allocator to get set of pages. From the other hand not allocating all pages is something that might occur. In that case we should fallbak to the single-page allocator trying to get missing pages, because it is more permissive(direct reclaim, etc). Introduce a vm_area_alloc_pages() function where the described logic is implemented. Link: https://lkml.kernel.org/r/20210521130718.GA17882@pc638.lan Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Mel Gorman <mgorman@suse.de> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmalloc.c | 81 +++++++++++++++++++++++++++++++------------------ 1 file changed, 52 insertions(+), 29 deletions(-) --- a/mm/vmalloc.c~mm-vmalloc-fallback-to-a-single-page-allocator +++ a/mm/vmalloc.c @@ -2758,6 +2758,54 @@ void *vmap_pfn(unsigned long *pfns, unsi EXPORT_SYMBOL_GPL(vmap_pfn); #endif /* CONFIG_VMAP_PFN */ +static inline unsigned int +vm_area_alloc_pages(gfp_t gfp, int nid, + unsigned int order, unsigned long nr_pages, struct page **pages) +{ + unsigned int nr_allocated = 0; + + /* + * For order-0 pages we make use of bulk allocator, if + * the page array is partly or not at all populated due + * to fails, fallback to a single page allocator that is + * more permissive. + */ + if (!order) + nr_allocated = alloc_pages_bulk_array_node( + gfp, nid, nr_pages, pages); + else + /* + * Compound pages required for remap_vmalloc_page if + * high-order pages. + */ + gfp |= __GFP_COMP; + + /* High-order pages or fallback path if "bulk" fails. */ + while (nr_allocated < nr_pages) { + struct page *page; + int i; + + page = alloc_pages_node(nid, gfp, order); + if (unlikely(!page)) + break; + + /* + * Careful, we allocate and map page-order pages, but + * tracking is done per PAGE_SIZE page so as to keep the + * vm_struct APIs independent of the physical/mapped size. + */ + for (i = 0; i < (1U << order); i++) + pages[nr_allocated + i] = page + i; + + if (gfpflags_allow_blocking(gfp)) + cond_resched(); + + nr_allocated += 1U << order; + } + + return nr_allocated; +} + static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot, unsigned int page_shift, int node) @@ -2790,37 +2838,11 @@ static void *__vmalloc_area_node(struct return NULL; } - area->nr_pages = 0; set_vm_area_page_order(area, page_shift - PAGE_SHIFT); page_order = vm_area_page_order(area); - if (!page_order) { - area->nr_pages = alloc_pages_bulk_array_node( - gfp_mask, node, nr_small_pages, area->pages); - } else { - /* - * Careful, we allocate and map page_order pages, but tracking is done - * per PAGE_SIZE page so as to keep the vm_struct APIs independent of - * the physical/mapped size. - */ - while (area->nr_pages < nr_small_pages) { - struct page *page; - int i; - - /* Compound pages required for remap_vmalloc_page */ - page = alloc_pages_node(node, gfp_mask | __GFP_COMP, page_order); - if (unlikely(!page)) - break; - - for (i = 0; i < (1U << page_order); i++) - area->pages[area->nr_pages + i] = page + i; - - if (gfpflags_allow_blocking(gfp_mask)) - cond_resched(); - - area->nr_pages += 1U << page_order; - } - } + area->nr_pages = vm_area_alloc_pages(gfp_mask, node, + page_order, nr_small_pages, area->pages); atomic_long_add(area->nr_pages, &nr_vmalloc_pages); @@ -2835,7 +2857,8 @@ static void *__vmalloc_area_node(struct goto fail; } - if (vmap_pages_range(addr, addr + size, prot, area->pages, page_shift) < 0) { + if (vmap_pages_range(addr, addr + size, prot, area->pages, + page_shift) < 0) { warn_alloc(gfp_mask, NULL, "vmalloc error: size %lu, failed to map pages", area->nr_pages * PAGE_SIZE); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 137/192] mm: vmalloc: add cond_resched() in __vunmap() 2021-06-29 2:32 incoming Andrew Morton ` (135 preceding siblings ...) 2021-06-29 2:40 ` [patch 136/192] mm/vmalloc: fallback to a single page allocator Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 138/192] printk: introduce dump_stack_lvl() Andrew Morton ` (54 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, aquini, atomlin, linux-mm, mhocko, mm-commits, npiggin, torvalds, urezki From: Rafael Aquini <aquini@redhat.com> Subject: mm: vmalloc: add cond_resched() in __vunmap() On non-preemptible kernel builds the watchdog can complain about soft lockups when vfree() is called against large vmalloc areas: [ 210.851798] kvmalloc-test: vmalloc(2199023255552) succeeded [ 238.654842] watchdog: BUG: soft lockup - CPU#181 stuck for 26s! [rmmod:5203] [ 238.662716] Modules linked in: kvmalloc_test(OE-) ... [ 238.772671] CPU: 181 PID: 5203 Comm: rmmod Tainted: G S OE 5.13.0-rc7+ #1 [ 238.781413] Hardware name: Intel Corporation PURLEY/PURLEY, BIOS PLYXCRB1.86B.0553.D01.1809190614 09/19/2018 [ 238.792383] RIP: 0010:free_unref_page+0x52/0x60 [ 238.797447] Code: 48 c1 fd 06 48 89 ee e8 9c d0 ff ff 84 c0 74 19 9c 41 5c fa 48 89 ee 48 89 df e8 b9 ea ff ff 41 f7 c4 00 02 00 00 74 01 fb 5b <5d> 41 5c c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f0 29 77 [ 238.818406] RSP: 0018:ffffb4d87868fe98 EFLAGS: 00000206 [ 238.824236] RAX: 0000000000000000 RBX: 000000001da0c945 RCX: ffffb4d87868fe40 [ 238.832200] RDX: ffffd79d3beed108 RSI: ffffd7998501dc08 RDI: ffff9c6fbffd7010 [ 238.840166] RBP: 000000000d518cbd R08: ffffd7998501dc08 R09: 0000000000000001 [ 238.848131] R10: 0000000000000000 R11: ffffd79d3beee088 R12: 0000000000000202 [ 238.856095] R13: ffff9e5be3eceec0 R14: 0000000000000000 R15: 0000000000000000 [ 238.864059] FS: 00007fe082c2d740(0000) GS:ffff9f4c69b40000(0000) knlGS:0000000000000000 [ 238.873089] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 238.879503] CR2: 000055a000611128 CR3: 000000f6094f6006 CR4: 00000000007706e0 [ 238.887467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 238.895433] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 238.903397] PKRU: 55555554 [ 238.906417] Call Trace: [ 238.909149] __vunmap+0x17c/0x220 [ 238.912851] __x64_sys_delete_module+0x13a/0x250 [ 238.918008] ? syscall_trace_enter.isra.20+0x13c/0x1b0 [ 238.923746] do_syscall_64+0x39/0x80 [ 238.927740] entry_SYSCALL_64_after_hwframe+0x44/0xae Like in other range zapping routines that iterate over a large list, lets just add cond_resched() within __vunmap()'s page-releasing loop in order to avoid the watchdog splats. Link: https://lkml.kernel.org/r/20210622225030.478384-1-aquini@redhat.com Signed-off-by: Rafael Aquini <aquini@redhat.com> Acked-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/vmalloc.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/vmalloc.c~mm-vmalloc-add-cond_resched-in-__vunmap +++ a/mm/vmalloc.c @@ -2567,6 +2567,7 @@ static void __vunmap(const void *addr, i BUG_ON(!page); __free_pages(page, page_order); + cond_resched(); } atomic_long_sub(area->nr_pages, &nr_vmalloc_pages); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 138/192] printk: introduce dump_stack_lvl() 2021-06-29 2:32 incoming Andrew Morton ` (136 preceding siblings ...) 2021-06-29 2:40 ` [patch 137/192] mm: vmalloc: add cond_resched() in __vunmap() Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 139/192] kasan: use dump_stack_lvl(KERN_ERR) to print stacks Andrew Morton ` (53 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, bo.he, dvyukov, elver, glider, linux-mm, mingo, mm-commits, pmladek, psodagud, rostedt, ryabinin.a.a, senozhatsky, torvalds, yanmin_zhang From: Alexander Potapenko <glider@google.com> Subject: printk: introduce dump_stack_lvl() dump_stack() is used for many different cases, which may require a log level consistent with other kernel messages surrounding the dump_stack() call. Without that, certain systems that are configured to ignore the default level messages will miss stack traces in critical error reports. This patch introduces dump_stack_lvl() that behaves similarly to dump_stack(), but accepts a custom log level. The old dump_stack() becomes equal to dump_stack_lvl(KERN_DEFAULT). A somewhat similar patch has been proposed in 2012: https://lore.kernel.org/lkml/1332493269.2359.9.camel@hebo/ , but wasn't merged. [elver@google.com: add missing dump_stack_lvl() stub if CONFIG_PRINTK=n] Link: https://lkml.kernel.org/r/YJ0KAM0hQev1AmWe@elver.google.com Link: https://lkml.kernel.org/r/20210506105405.3535023-1-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: he, bo <bo.he@intel.com> Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com> Cc: Prasad Sodagudi <psodagud@quicinc.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/printk.h | 5 +++++ lib/dump_stack.c | 20 +++++++++++++------- 2 files changed, 18 insertions(+), 7 deletions(-) --- a/include/linux/printk.h~printk-introduce-dump_stack_lvl +++ a/include/linux/printk.h @@ -206,6 +206,7 @@ void __init setup_log_buf(int early); __printf(1, 2) void dump_stack_set_arch_desc(const char *fmt, ...); void dump_stack_print_info(const char *log_lvl); void show_regs_print_info(const char *log_lvl); +extern asmlinkage void dump_stack_lvl(const char *log_lvl) __cold; extern asmlinkage void dump_stack(void) __cold; extern void printk_safe_flush(void); extern void printk_safe_flush_on_panic(void); @@ -269,6 +270,10 @@ static inline void show_regs_print_info( { } +static inline void dump_stack_lvl(const char *log_lvl) +{ +} + static inline void dump_stack(void) { } --- a/lib/dump_stack.c~printk-introduce-dump_stack_lvl +++ a/lib/dump_stack.c @@ -73,10 +73,10 @@ void show_regs_print_info(const char *lo dump_stack_print_info(log_lvl); } -static void __dump_stack(void) +static void __dump_stack(const char *log_lvl) { - dump_stack_print_info(KERN_DEFAULT); - show_stack(NULL, NULL, KERN_DEFAULT); + dump_stack_print_info(log_lvl); + show_stack(NULL, NULL, log_lvl); } /** @@ -87,7 +87,7 @@ static void __dump_stack(void) #ifdef CONFIG_SMP static atomic_t dump_lock = ATOMIC_INIT(-1); -asmlinkage __visible void dump_stack(void) +asmlinkage __visible void dump_stack_lvl(const char *log_lvl) { unsigned long flags; int was_locked; @@ -117,7 +117,7 @@ retry: goto retry; } - __dump_stack(); + __dump_stack(log_lvl); if (!was_locked) atomic_set(&dump_lock, -1); @@ -125,9 +125,15 @@ retry: local_irq_restore(flags); } #else -asmlinkage __visible void dump_stack(void) +asmlinkage __visible void dump_stack_lvl(const char *log_lvl) { - __dump_stack(); + __dump_stack(log_lvl); } #endif +EXPORT_SYMBOL(dump_stack_lvl); + +asmlinkage __visible void dump_stack(void) +{ + dump_stack_lvl(KERN_DEFAULT); +} EXPORT_SYMBOL(dump_stack); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 139/192] kasan: use dump_stack_lvl(KERN_ERR) to print stacks 2021-06-29 2:32 incoming Andrew Morton ` (137 preceding siblings ...) 2021-06-29 2:40 ` [patch 138/192] printk: introduce dump_stack_lvl() Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 140/192] kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() Andrew Morton ` (52 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, bo.he, dvyukov, elver, glider, linux-mm, mingo, mm-commits, pmladek, psodagud, rostedt, ryabinin.a.a, senozhatsky, torvalds, yanmin_zhang From: Alexander Potapenko <glider@google.com> Subject: kasan: use dump_stack_lvl(KERN_ERR) to print stacks Most of the contents of KASAN reports are printed with pr_err(), so use a consistent logging level to print the memory access stacks. Link: https://lkml.kernel.org/r/20210506105405.3535023-2-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Prasad Sodagudi <psodagud@quicinc.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: he, bo <bo.he@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/kasan/report.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/kasan/report.c~kasan-use-dump_stack_lvlkern_err-to-print-stacks +++ a/mm/kasan/report.c @@ -230,7 +230,7 @@ static void print_address_description(vo { struct page *page = kasan_addr_to_page(addr); - dump_stack(); + dump_stack_lvl(KERN_ERR); pr_err("\n"); if (page && PageSlab(page)) { @@ -375,7 +375,7 @@ void kasan_report_async(void) pr_err("BUG: KASAN: invalid-access\n"); pr_err("Asynchronous mode enabled: no access details available\n"); pr_err("\n"); - dump_stack(); + dump_stack_lvl(KERN_ERR); end_report(&flags, 0); } #endif /* CONFIG_KASAN_HW_TAGS */ @@ -420,7 +420,7 @@ static void __kasan_report(unsigned long pr_err("\n"); print_memory_metadata(info.first_bad_addr); } else { - dump_stack(); + dump_stack_lvl(KERN_ERR); } end_report(&flags, addr); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 140/192] kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() 2021-06-29 2:32 incoming Andrew Morton ` (138 preceding siblings ...) 2021-06-29 2:40 ` [patch 139/192] kasan: use dump_stack_lvl(KERN_ERR) to print stacks Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 141/192] kasan: allow an architecture to disable inline instrumentation Andrew Morton ` (51 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, brendanhiggins, corbet, davidgow, dja, dvyukov, elver, linux-mm, mm-commits, ryabinin.a.a, torvalds From: David Gow <davidgow@google.com> Subject: kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() The KUNIT_EXPECT_KASAN_FAIL() macro currently uses KUNIT_EXPECT_EQ() to compare fail_data.report_expected and fail_data.report_found. This always gave a somewhat useless error message on failure, but the addition of extra compile-time checking with READ_ONCE() has caused it to get much longer, and be truncated before anything useful is displayed. Instead, just check fail_data.report_found by hand (we've just set report_expected to 'true'), and print a better failure message with KUNIT_FAIL(). Because of this, report_expected is no longer used anywhere, and can be removed. Beforehand, a failure in: KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)area)[3100]); would have looked like: [22:00:34] [FAILED] vmalloc_oob [22:00:34] # vmalloc_oob: EXPECTATION FAILED at lib/test_kasan.c:991 [22:00:34] Expected ({ do { extern void __compiletime_assert_705(void) __attribute__((__error__("Unsupported access size for {READ,WRITE}_ONCE()."))); if (!((sizeof(fail_data.report_expected) == sizeof(char) || sizeof(fail_data.repp [22:00:34] not ok 45 - vmalloc_oob With this change, it instead looks like: [22:04:04] [FAILED] vmalloc_oob [22:04:04] # vmalloc_oob: EXPECTATION FAILED at lib/test_kasan.c:993 [22:04:04] KASAN failure expected in "((volatile char *)area)[3100]", but none occurred [22:04:04] not ok 45 - vmalloc_oob Also update the example failure in the documentation to reflect this. Link: https://lkml.kernel.org/r/20210606005531.165954-1-davidgow@google.com Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Brendan Higgins <brendanhiggins@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Daniel Axtens <dja@axtens.net> Cc: David Gow <davidgow@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/dev-tools/kasan.rst | 9 ++++----- include/linux/kasan.h | 1 - lib/test_kasan.c | 11 +++++------ 3 files changed, 9 insertions(+), 12 deletions(-) --- a/Documentation/dev-tools/kasan.rst~kasan-test-improve-failure-message-in-kunit_expect_kasan_fail +++ a/Documentation/dev-tools/kasan.rst @@ -447,11 +447,10 @@ When a test fails due to a failed ``kmal When a test fails due to a missing KASAN report:: - # kmalloc_double_kzfree: EXPECTATION FAILED at lib/test_kasan.c:629 - Expected kasan_data->report_expected == kasan_data->report_found, but - kasan_data->report_expected == 1 - kasan_data->report_found == 0 - not ok 28 - kmalloc_double_kzfree + # kmalloc_double_kzfree: EXPECTATION FAILED at lib/test_kasan.c:974 + KASAN failure expected in "kfree_sensitive(ptr)", but none occurred + not ok 44 - kmalloc_double_kzfree + At the end the cumulative status of all KASAN tests is printed. On success:: --- a/include/linux/kasan.h~kasan-test-improve-failure-message-in-kunit_expect_kasan_fail +++ a/include/linux/kasan.h @@ -17,7 +17,6 @@ struct task_struct; /* kasan_data struct is used in KUnit tests for KASAN expected failures */ struct kunit_kasan_expectation { - bool report_expected; bool report_found; }; --- a/lib/test_kasan.c~kasan-test-improve-failure-message-in-kunit_expect_kasan_fail +++ a/lib/test_kasan.c @@ -55,7 +55,6 @@ static int kasan_test_init(struct kunit multishot = kasan_save_enable_multi_shot(); kasan_set_tagging_report_once(false); fail_data.report_found = false; - fail_data.report_expected = false; kunit_add_named_resource(test, NULL, NULL, &resource, "kasan_data", &fail_data); return 0; @@ -94,20 +93,20 @@ static void kasan_test_exit(struct kunit !kasan_async_mode_enabled()) \ migrate_disable(); \ KUNIT_EXPECT_FALSE(test, READ_ONCE(fail_data.report_found)); \ - WRITE_ONCE(fail_data.report_expected, true); \ barrier(); \ expression; \ barrier(); \ - KUNIT_EXPECT_EQ(test, \ - READ_ONCE(fail_data.report_expected), \ - READ_ONCE(fail_data.report_found)); \ + if (!READ_ONCE(fail_data.report_found)) { \ + KUNIT_FAIL(test, KUNIT_SUBTEST_INDENT "KASAN failure " \ + "expected in \"" #expression \ + "\", but none occurred"); \ + } \ if (IS_ENABLED(CONFIG_KASAN_HW_TAGS)) { \ if (READ_ONCE(fail_data.report_found)) \ kasan_enable_tagging_sync(); \ migrate_enable(); \ } \ WRITE_ONCE(fail_data.report_found, false); \ - WRITE_ONCE(fail_data.report_expected, false); \ } while (0) #define KASAN_TEST_NEEDS_CONFIG_ON(test, config) do { \ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 141/192] kasan: allow an architecture to disable inline instrumentation 2021-06-29 2:32 incoming Andrew Morton ` (139 preceding siblings ...) 2021-06-29 2:40 ` [patch 140/192] kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 142/192] kasan: allow architectures to provide an outline readiness check Andrew Morton ` (50 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, aneesh.kumar, bsingharora, christophe.leroy, dja, dvyukov, elver, glider, linux-mm, mm-commits, ryabinin.a.a, torvalds From: Daniel Axtens <dja@axtens.net> Subject: kasan: allow an architecture to disable inline instrumentation Patch series "KASAN core changes for ppc64 radix KASAN", v16. Building on the work of Christophe, Aneesh and Balbir, I've ported KASAN to 64-bit Book3S kernels running on the Radix MMU. I've been trying this for a while, but we keep having collisions between the kasan code in the mm tree and the code I want to put in to the ppc tree. This series just contains the kasan core changes that we need. There should be no noticeable changes to other platforms. This patch (of 4): For annoying architectural reasons, it's very difficult to support inline instrumentation on powerpc64.* Add a Kconfig flag to allow an arch to disable inline. (It's a bit annoying to be 'backwards', but I'm not aware of any way to have an arch force a symbol to be 'n', rather than 'y'.) We also disable stack instrumentation in this case as it does things that are functionally equivalent to inline instrumentation, namely adding code that touches the shadow directly without going through a C helper. * on ppc64 atm, the shadow lives in virtual memory and isn't accessible in real mode. However, before we turn on virtual memory, we parse the device tree to determine which platform and MMU we're running under. That calls generic DT code, which is instrumented. Inline instrumentation in DT would unconditionally attempt to touch the shadow region, which we won't have set up yet, and would crash. We can make outline mode wait for the arch to be ready, but we can't change what the compiler inserts for inline mode. Link: https://lkml.kernel.org/r/20210624034050.511391-1-dja@axtens.net Link: https://lkml.kernel.org/r/20210624034050.511391-2-dja@axtens.net Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- lib/Kconfig.kasan | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/lib/Kconfig.kasan~kasan-allow-an-architecture-to-disable-inline-instrumentation +++ a/lib/Kconfig.kasan @@ -12,6 +12,13 @@ config HAVE_ARCH_KASAN_HW_TAGS config HAVE_ARCH_KASAN_VMALLOC bool +config ARCH_DISABLE_KASAN_INLINE + bool + help + An architecture might not support inline instrumentation. + When this option is selected, inline and stack instrumentation are + disabled. + config CC_HAS_KASAN_GENERIC def_bool $(cc-option, -fsanitize=kernel-address) @@ -130,6 +137,7 @@ config KASAN_OUTLINE config KASAN_INLINE bool "Inline instrumentation" + depends on !ARCH_DISABLE_KASAN_INLINE help Compiler directly inserts code checking shadow memory before memory accesses. This is faster than outline (in some workloads @@ -141,6 +149,7 @@ endchoice config KASAN_STACK bool "Enable stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST depends on KASAN_GENERIC || KASAN_SW_TAGS + depends on !ARCH_DISABLE_KASAN_INLINE default y if CC_IS_GCC help The LLVM stack address sanitizer has a know problem that @@ -154,6 +163,9 @@ config KASAN_STACK but clang users can still enable it for builds without CONFIG_COMPILE_TEST. On gcc it is assumed to always be safe to use and enabled by default. + If the architecture disables inline instrumentation, stack + instrumentation is also disabled as it adds inline-style + instrumentation that is run unconditionally. config KASAN_SW_TAGS_IDENTIFY bool "Enable memory corruption identification" _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 142/192] kasan: allow architectures to provide an outline readiness check 2021-06-29 2:32 incoming Andrew Morton ` (140 preceding siblings ...) 2021-06-29 2:40 ` [patch 141/192] kasan: allow an architecture to disable inline instrumentation Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 143/192] mm: define default MAX_PTRS_PER_* in include/pgtable.h Andrew Morton ` (49 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, aneesh.kumar, bsingharora, christophe.leroy, dja, dvyukov, elver, glider, linux-mm, mm-commits, ryabinin.a.a, torvalds From: Daniel Axtens <dja@axtens.net> Subject: kasan: allow architectures to provide an outline readiness check Allow architectures to define a kasan_arch_is_ready() hook that bails out of any function that's about to touch the shadow unless the arch says that it is ready for the memory to be accessed. This is fairly uninvasive and should have a negligible performance penalty. This will only work in outline mode, so an arch must specify ARCH_DISABLE_KASAN_INLINE if it requires this. Link: https://lkml.kernel.org/r/20210624034050.511391-3-dja@axtens.net Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marco Elver <elver@google.com> Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/kasan/common.c | 3 +++ mm/kasan/generic.c | 3 +++ mm/kasan/kasan.h | 6 ++++++ mm/kasan/shadow.c | 6 ++++++ 4 files changed, 18 insertions(+) --- a/mm/kasan/common.c~kasan-allow-architectures-to-provide-an-outline-readiness-check +++ a/mm/kasan/common.c @@ -331,6 +331,9 @@ static inline bool ____kasan_slab_free(s u8 tag; void *tagged_object; + if (!kasan_arch_is_ready()) + return false; + tag = get_tag(object); tagged_object = object; object = kasan_reset_tag(object); --- a/mm/kasan/generic.c~kasan-allow-architectures-to-provide-an-outline-readiness-check +++ a/mm/kasan/generic.c @@ -163,6 +163,9 @@ static __always_inline bool check_region size_t size, bool write, unsigned long ret_ip) { + if (!kasan_arch_is_ready()) + return true; + if (unlikely(size == 0)) return true; --- a/mm/kasan/kasan.h~kasan-allow-architectures-to-provide-an-outline-readiness-check +++ a/mm/kasan/kasan.h @@ -449,6 +449,12 @@ static inline void kasan_poison_last_gra #endif /* CONFIG_KASAN_GENERIC */ +#ifndef kasan_arch_is_ready +static inline bool kasan_arch_is_ready(void) { return true; } +#elif !defined(CONFIG_KASAN_GENERIC) || !defined(CONFIG_KASAN_OUTLINE) +#error kasan_arch_is_ready only works in KASAN generic outline mode! +#endif + /* * Exported functions for interfaces called from assembly or from generated * code. Declarations here to avoid warning about missing declarations. --- a/mm/kasan/shadow.c~kasan-allow-architectures-to-provide-an-outline-readiness-check +++ a/mm/kasan/shadow.c @@ -73,6 +73,9 @@ void kasan_poison(const void *addr, size { void *shadow_start, *shadow_end; + if (!kasan_arch_is_ready()) + return; + /* * Perform shadow offset calculation based on untagged address, as * some of the callers (e.g. kasan_poison_object_data) pass tagged @@ -99,6 +102,9 @@ EXPORT_SYMBOL(kasan_poison); #ifdef CONFIG_KASAN_GENERIC void kasan_poison_last_granule(const void *addr, size_t size) { + if (!kasan_arch_is_ready()) + return; + if (size & KASAN_GRANULE_MASK) { u8 *shadow = (u8 *)kasan_mem_to_shadow(addr + size); *shadow = size & KASAN_GRANULE_MASK; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 143/192] mm: define default MAX_PTRS_PER_* in include/pgtable.h 2021-06-29 2:32 incoming Andrew Morton ` (141 preceding siblings ...) 2021-06-29 2:40 ` [patch 142/192] kasan: allow architectures to provide an outline readiness check Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 144/192] kasan: use MAX_PTRS_PER_* for early shadow tables Andrew Morton ` (48 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, aneesh.kumar, bsingharora, christophe.leroy, dja, dvyukov, elver, glider, linux-mm, mm-commits, ryabinin.a.a, torvalds From: Daniel Axtens <dja@axtens.net> Subject: mm: define default MAX_PTRS_PER_* in include/pgtable.h Commit c65e774fb3f6 ("x86/mm: Make PGDIR_SHIFT and PTRS_PER_P4D variable") made PTRS_PER_P4D variable on x86 and introduced MAX_PTRS_PER_P4D as a constant for cases which need a compile-time constant (e.g. fixed-size arrays). powerpc likewise has boot-time selectable MMU features which can cause other mm "constants" to vary. For KASAN, we have some static PTE/PMD/PUD/P4D arrays so we need compile-time maximums for all these constants. Extend the MAX_PTRS_PER_ idiom, and place default definitions in include/pgtable.h. These define MAX_PTRS_PER_x to be PTRS_PER_x unless an architecture has defined MAX_PTRS_PER_x in its arch headers. Clean up pgtable-nop4d.h and s390's MAX_PTRS_PER_P4D definitions while we're at it: both can just pick up the default now. Link: https://lkml.kernel.org/r/20210624034050.511391-4-dja@axtens.net Signed-off-by: Daniel Axtens <dja@axtens.net> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Marco Elver <elver@google.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/s390/include/asm/pgtable.h | 2 -- include/asm-generic/pgtable-nop4d.h | 1 - include/linux/pgtable.h | 22 ++++++++++++++++++++++ 3 files changed, 22 insertions(+), 3 deletions(-) --- a/arch/s390/include/asm/pgtable.h~mm-define-default-max_ptrs_per_-in-include-pgtableh +++ a/arch/s390/include/asm/pgtable.h @@ -344,8 +344,6 @@ static inline int is_module_addr(void *a #define PTRS_PER_P4D _CRST_ENTRIES #define PTRS_PER_PGD _CRST_ENTRIES -#define MAX_PTRS_PER_P4D PTRS_PER_P4D - /* * Segment table and region3 table entry encoding * (R = read-only, I = invalid, y = young bit): --- a/include/asm-generic/pgtable-nop4d.h~mm-define-default-max_ptrs_per_-in-include-pgtableh +++ a/include/asm-generic/pgtable-nop4d.h @@ -9,7 +9,6 @@ typedef struct { pgd_t pgd; } p4d_t; #define P4D_SHIFT PGDIR_SHIFT -#define MAX_PTRS_PER_P4D 1 #define PTRS_PER_P4D 1 #define P4D_SIZE (1UL << P4D_SHIFT) #define P4D_MASK (~(P4D_SIZE-1)) --- a/include/linux/pgtable.h~mm-define-default-max_ptrs_per_-in-include-pgtableh +++ a/include/linux/pgtable.h @@ -1592,4 +1592,26 @@ typedef unsigned int pgtbl_mod_mask; #define pte_leaf_size(x) PAGE_SIZE #endif +/* + * Some architectures have MMUs that are configurable or selectable at boot + * time. These lead to variable PTRS_PER_x. For statically allocated arrays it + * helps to have a static maximum value. + */ + +#ifndef MAX_PTRS_PER_PTE +#define MAX_PTRS_PER_PTE PTRS_PER_PTE +#endif + +#ifndef MAX_PTRS_PER_PMD +#define MAX_PTRS_PER_PMD PTRS_PER_PMD +#endif + +#ifndef MAX_PTRS_PER_PUD +#define MAX_PTRS_PER_PUD PTRS_PER_PUD +#endif + +#ifndef MAX_PTRS_PER_P4D +#define MAX_PTRS_PER_P4D PTRS_PER_P4D +#endif + #endif /* _LINUX_PGTABLE_H */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 144/192] kasan: use MAX_PTRS_PER_* for early shadow tables 2021-06-29 2:32 incoming Andrew Morton ` (142 preceding siblings ...) 2021-06-29 2:40 ` [patch 143/192] mm: define default MAX_PTRS_PER_* in include/pgtable.h Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 145/192] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY Andrew Morton ` (47 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, aneesh.kumar, bsingharora, christophe.leroy, dja, dvyukov, elver, glider, linux-mm, mm-commits, ryabinin.a.a, torvalds From: Daniel Axtens <dja@axtens.net> Subject: kasan: use MAX_PTRS_PER_* for early shadow tables powerpc has a variable number of PTRS_PER_*, set at runtime based on the MMU that the kernel is booted under. This means the PTRS_PER_* are no longer constants, and therefore breaks the build. Switch to using MAX_PTRS_PER_*, which are constant. Link: https://lkml.kernel.org/r/20210624034050.511391-5-dja@axtens.net Signed-off-by: Daniel Axtens <dja@axtens.net> Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Suggested-by: Balbir Singh <bsingharora@gmail.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Balbir Singh <bsingharora@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/kasan.h | 6 +++--- mm/kasan/init.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) --- a/include/linux/kasan.h~kasan-use-max_ptrs_per_-for-early-shadow-tables +++ a/include/linux/kasan.h @@ -40,9 +40,9 @@ struct kunit_kasan_expectation { #endif extern unsigned char kasan_early_shadow_page[PAGE_SIZE]; -extern pte_t kasan_early_shadow_pte[PTRS_PER_PTE + PTE_HWTABLE_PTRS]; -extern pmd_t kasan_early_shadow_pmd[PTRS_PER_PMD]; -extern pud_t kasan_early_shadow_pud[PTRS_PER_PUD]; +extern pte_t kasan_early_shadow_pte[MAX_PTRS_PER_PTE + PTE_HWTABLE_PTRS]; +extern pmd_t kasan_early_shadow_pmd[MAX_PTRS_PER_PMD]; +extern pud_t kasan_early_shadow_pud[MAX_PTRS_PER_PUD]; extern p4d_t kasan_early_shadow_p4d[MAX_PTRS_PER_P4D]; int kasan_populate_early_shadow(const void *shadow_start, --- a/mm/kasan/init.c~kasan-use-max_ptrs_per_-for-early-shadow-tables +++ a/mm/kasan/init.c @@ -41,7 +41,7 @@ static inline bool kasan_p4d_table(pgd_t } #endif #if CONFIG_PGTABLE_LEVELS > 3 -pud_t kasan_early_shadow_pud[PTRS_PER_PUD] __page_aligned_bss; +pud_t kasan_early_shadow_pud[MAX_PTRS_PER_PUD] __page_aligned_bss; static inline bool kasan_pud_table(p4d_t p4d) { return p4d_page(p4d) == virt_to_page(lm_alias(kasan_early_shadow_pud)); @@ -53,7 +53,7 @@ static inline bool kasan_pud_table(p4d_t } #endif #if CONFIG_PGTABLE_LEVELS > 2 -pmd_t kasan_early_shadow_pmd[PTRS_PER_PMD] __page_aligned_bss; +pmd_t kasan_early_shadow_pmd[MAX_PTRS_PER_PMD] __page_aligned_bss; static inline bool kasan_pmd_table(pud_t pud) { return pud_page(pud) == virt_to_page(lm_alias(kasan_early_shadow_pmd)); @@ -64,7 +64,7 @@ static inline bool kasan_pmd_table(pud_t return false; } #endif -pte_t kasan_early_shadow_pte[PTRS_PER_PTE + PTE_HWTABLE_PTRS] +pte_t kasan_early_shadow_pte[MAX_PTRS_PER_PTE + PTE_HWTABLE_PTRS] __page_aligned_bss; static inline bool kasan_pte_table(pmd_t pmd) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 145/192] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY 2021-06-29 2:32 incoming Andrew Morton ` (143 preceding siblings ...) 2021-06-29 2:40 ` [patch 144/192] kasan: use MAX_PTRS_PER_* for early shadow tables Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 146/192] kasan: integrate the common part of two KASAN tag-based modes Andrew Morton ` (46 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, chinwen.chang, dvyukov, elver, glider, gregkh, Kuan-Ying.Lee, linux-mm, matthias.bgg, mm-commits, nicholas.tang, ryabinin.a.a, torvalds From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Subject: kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY Patch series "kasan: add memory corruption identification support for hw tag-based kasan", v4. Add memory corruption identification for hardware tag-based KASAN mode. This patch (of 3): Rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY in order to be compatible with hardware tag-based mode. Link: https://lkml.kernel.org/r/20210626100931.22794-1-Kuan-Ying.Lee@mediatek.com Link: https://lkml.kernel.org/r/20210626100931.22794-2-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Suggested-by: Marco Elver <elver@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Nicholas Tang <nicholas.tang@mediatek.com> Cc: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- lib/Kconfig.kasan | 2 +- mm/kasan/kasan.h | 4 ++-- mm/kasan/report_sw_tags.c | 2 +- mm/kasan/sw_tags.c | 4 ++-- 4 files changed, 6 insertions(+), 6 deletions(-) --- a/lib/Kconfig.kasan~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify +++ a/lib/Kconfig.kasan @@ -167,7 +167,7 @@ config KASAN_STACK instrumentation is also disabled as it adds inline-style instrumentation that is run unconditionally. -config KASAN_SW_TAGS_IDENTIFY +config KASAN_TAGS_IDENTIFY bool "Enable memory corruption identification" depends on KASAN_SW_TAGS help --- a/mm/kasan/kasan.h~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify +++ a/mm/kasan/kasan.h @@ -153,7 +153,7 @@ struct kasan_track { depot_stack_handle_t stack; }; -#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY +#ifdef CONFIG_KASAN_TAGS_IDENTIFY #define KASAN_NR_FREE_STACKS 5 #else #define KASAN_NR_FREE_STACKS 1 @@ -170,7 +170,7 @@ struct kasan_alloc_meta { #else struct kasan_track free_track[KASAN_NR_FREE_STACKS]; #endif -#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY +#ifdef CONFIG_KASAN_TAGS_IDENTIFY u8 free_pointer_tag[KASAN_NR_FREE_STACKS]; u8 free_track_idx; #endif --- a/mm/kasan/report_sw_tags.c~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify +++ a/mm/kasan/report_sw_tags.c @@ -31,7 +31,7 @@ const char *kasan_get_bug_type(struct kasan_access_info *info) { -#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY +#ifdef CONFIG_KASAN_TAGS_IDENTIFY struct kasan_alloc_meta *alloc_meta; struct kmem_cache *cache; struct page *page; --- a/mm/kasan/sw_tags.c~kasan-rename-config_kasan_sw_tags_identify-to-config_kasan_tags_identify +++ a/mm/kasan/sw_tags.c @@ -177,7 +177,7 @@ void kasan_set_free_info(struct kmem_cac if (!alloc_meta) return; -#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY +#ifdef CONFIG_KASAN_TAGS_IDENTIFY idx = alloc_meta->free_track_idx; alloc_meta->free_pointer_tag[idx] = tag; alloc_meta->free_track_idx = (idx + 1) % KASAN_NR_FREE_STACKS; @@ -196,7 +196,7 @@ struct kasan_track *kasan_get_free_track if (!alloc_meta) return NULL; -#ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY +#ifdef CONFIG_KASAN_TAGS_IDENTIFY for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { if (alloc_meta->free_pointer_tag[i] == tag) break; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 146/192] kasan: integrate the common part of two KASAN tag-based modes 2021-06-29 2:32 incoming Andrew Morton ` (144 preceding siblings ...) 2021-06-29 2:40 ` [patch 145/192] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:40 ` [patch 147/192] kasan: add memory corruption identification support for hardware tag-based mode Andrew Morton ` (45 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, chinwen.chang, dvyukov, elver, glider, gregkh, Kuan-Ying.Lee, linux-mm, matthias.bgg, mm-commits, nicholas.tang, ryabinin.a.a, torvalds From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Subject: kasan: integrate the common part of two KASAN tag-based modes 1. Move kasan_get_free_track() and kasan_set_free_info() into tags.c and combine these two functions for SW_TAGS and HW_TAGS kasan mode. 2. Move kasan_get_bug_type() to report_tags.c and make this function compatible for SW_TAGS and HW_TAGS kasan mode. Link: https://lkml.kernel.org/r/20210626100931.22794-3-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Suggested-by: Marco Elver <elver@google.com> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Nicholas Tang <nicholas.tang@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/kasan/Makefile | 4 +- mm/kasan/hw_tags.c | 22 ------------- mm/kasan/report_hw_tags.c | 5 --- mm/kasan/report_sw_tags.c | 43 -------------------------- mm/kasan/report_tags.c | 51 +++++++++++++++++++++++++++++++ mm/kasan/sw_tags.c | 41 ------------------------- mm/kasan/tags.c | 59 ++++++++++++++++++++++++++++++++++++ 7 files changed, 112 insertions(+), 113 deletions(-) --- a/mm/kasan/hw_tags.c~kasan-integrate-the-common-part-of-two-kasan-tag-based-modes +++ a/mm/kasan/hw_tags.c @@ -216,28 +216,6 @@ void __init kasan_init_hw_tags(void) pr_info("KernelAddressSanitizer initialized\n"); } -void kasan_set_free_info(struct kmem_cache *cache, - void *object, u8 tag) -{ - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - kasan_set_track(&alloc_meta->free_track[0], GFP_NOWAIT); -} - -struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, - void *object, u8 tag) -{ - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->free_track[0]; -} - #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) void kasan_set_tagging_report_once(bool state) --- a/mm/kasan/Makefile~kasan-integrate-the-common-part-of-two-kasan-tag-based-modes +++ a/mm/kasan/Makefile @@ -37,5 +37,5 @@ CFLAGS_sw_tags.o := $(CC_FLAGS_KASAN_RUN obj-$(CONFIG_KASAN) := common.o report.o obj-$(CONFIG_KASAN_GENERIC) += init.o generic.o report_generic.o shadow.o quarantine.o -obj-$(CONFIG_KASAN_HW_TAGS) += hw_tags.o report_hw_tags.o -obj-$(CONFIG_KASAN_SW_TAGS) += init.o report_sw_tags.o shadow.o sw_tags.o +obj-$(CONFIG_KASAN_HW_TAGS) += hw_tags.o report_hw_tags.o tags.o report_tags.o +obj-$(CONFIG_KASAN_SW_TAGS) += init.o report_sw_tags.o shadow.o sw_tags.o tags.o report_tags.o --- a/mm/kasan/report_hw_tags.c~kasan-integrate-the-common-part-of-two-kasan-tag-based-modes +++ a/mm/kasan/report_hw_tags.c @@ -15,11 +15,6 @@ #include "kasan.h" -const char *kasan_get_bug_type(struct kasan_access_info *info) -{ - return "invalid-access"; -} - void *kasan_find_first_bad_addr(void *addr, size_t size) { return kasan_reset_tag(addr); --- a/mm/kasan/report_sw_tags.c~kasan-integrate-the-common-part-of-two-kasan-tag-based-modes +++ a/mm/kasan/report_sw_tags.c @@ -29,49 +29,6 @@ #include "kasan.h" #include "../slab.h" -const char *kasan_get_bug_type(struct kasan_access_info *info) -{ -#ifdef CONFIG_KASAN_TAGS_IDENTIFY - struct kasan_alloc_meta *alloc_meta; - struct kmem_cache *cache; - struct page *page; - const void *addr; - void *object; - u8 tag; - int i; - - tag = get_tag(info->access_addr); - addr = kasan_reset_tag(info->access_addr); - page = kasan_addr_to_page(addr); - if (page && PageSlab(page)) { - cache = page->slab_cache; - object = nearest_obj(cache, page, (void *)addr); - alloc_meta = kasan_get_alloc_meta(cache, object); - - if (alloc_meta) { - for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { - if (alloc_meta->free_pointer_tag[i] == tag) - return "use-after-free"; - } - } - return "out-of-bounds"; - } - -#endif - /* - * If access_size is a negative number, then it has reason to be - * defined as out-of-bounds bug type. - * - * Casting negative numbers to size_t would indeed turn up as - * a large size_t and its value will be larger than ULONG_MAX/2, - * so that this can qualify as out-of-bounds. - */ - if (info->access_addr + info->access_size < info->access_addr) - return "out-of-bounds"; - - return "invalid-access"; -} - void *kasan_find_first_bad_addr(void *addr, size_t size) { u8 tag = get_tag(addr); --- /dev/null +++ a/mm/kasan/report_tags.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2014 Samsung Electronics Co., Ltd. + * Copyright (c) 2020 Google, Inc. + */ + +#include "kasan.h" +#include "../slab.h" + +const char *kasan_get_bug_type(struct kasan_access_info *info) +{ +#ifdef CONFIG_KASAN_TAGS_IDENTIFY + struct kasan_alloc_meta *alloc_meta; + struct kmem_cache *cache; + struct page *page; + const void *addr; + void *object; + u8 tag; + int i; + + tag = get_tag(info->access_addr); + addr = kasan_reset_tag(info->access_addr); + page = kasan_addr_to_page(addr); + if (page && PageSlab(page)) { + cache = page->slab_cache; + object = nearest_obj(cache, page, (void *)addr); + alloc_meta = kasan_get_alloc_meta(cache, object); + + if (alloc_meta) { + for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { + if (alloc_meta->free_pointer_tag[i] == tag) + return "use-after-free"; + } + } + return "out-of-bounds"; + } +#endif + + /* + * If access_size is a negative number, then it has reason to be + * defined as out-of-bounds bug type. + * + * Casting negative numbers to size_t would indeed turn up as + * a large size_t and its value will be larger than ULONG_MAX/2, + * so that this can qualify as out-of-bounds. + */ + if (info->access_addr + info->access_size < info->access_addr) + return "out-of-bounds"; + + return "invalid-access"; +} --- a/mm/kasan/sw_tags.c~kasan-integrate-the-common-part-of-two-kasan-tag-based-modes +++ a/mm/kasan/sw_tags.c @@ -166,44 +166,3 @@ void __hwasan_tag_memory(unsigned long a kasan_poison((void *)addr, size, tag, false); } EXPORT_SYMBOL(__hwasan_tag_memory); - -void kasan_set_free_info(struct kmem_cache *cache, - void *object, u8 tag) -{ - struct kasan_alloc_meta *alloc_meta; - u8 idx = 0; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return; - -#ifdef CONFIG_KASAN_TAGS_IDENTIFY - idx = alloc_meta->free_track_idx; - alloc_meta->free_pointer_tag[idx] = tag; - alloc_meta->free_track_idx = (idx + 1) % KASAN_NR_FREE_STACKS; -#endif - - kasan_set_track(&alloc_meta->free_track[idx], GFP_NOWAIT); -} - -struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, - void *object, u8 tag) -{ - struct kasan_alloc_meta *alloc_meta; - int i = 0; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - -#ifdef CONFIG_KASAN_TAGS_IDENTIFY - for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { - if (alloc_meta->free_pointer_tag[i] == tag) - break; - } - if (i == KASAN_NR_FREE_STACKS) - i = alloc_meta->free_track_idx; -#endif - - return &alloc_meta->free_track[i]; -} --- /dev/null +++ a/mm/kasan/tags.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file contains common tag-based KASAN code. + * + * Copyright (c) 2018 Google, Inc. + * Copyright (c) 2020 Google, Inc. + */ + +#include <linux/init.h> +#include <linux/kasan.h> +#include <linux/kernel.h> +#include <linux/memory.h> +#include <linux/mm.h> +#include <linux/static_key.h> +#include <linux/string.h> +#include <linux/types.h> + +#include "kasan.h" + +void kasan_set_free_info(struct kmem_cache *cache, + void *object, u8 tag) +{ + struct kasan_alloc_meta *alloc_meta; + u8 idx = 0; + + alloc_meta = kasan_get_alloc_meta(cache, object); + if (!alloc_meta) + return; + +#ifdef CONFIG_KASAN_TAGS_IDENTIFY + idx = alloc_meta->free_track_idx; + alloc_meta->free_pointer_tag[idx] = tag; + alloc_meta->free_track_idx = (idx + 1) % KASAN_NR_FREE_STACKS; +#endif + + kasan_set_track(&alloc_meta->free_track[idx], GFP_NOWAIT); +} + +struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, + void *object, u8 tag) +{ + struct kasan_alloc_meta *alloc_meta; + int i = 0; + + alloc_meta = kasan_get_alloc_meta(cache, object); + if (!alloc_meta) + return NULL; + +#ifdef CONFIG_KASAN_TAGS_IDENTIFY + for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { + if (alloc_meta->free_pointer_tag[i] == tag) + break; + } + if (i == KASAN_NR_FREE_STACKS) + i = alloc_meta->free_track_idx; +#endif + + return &alloc_meta->free_track[i]; +} _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 147/192] kasan: add memory corruption identification support for hardware tag-based mode 2021-06-29 2:32 incoming Andrew Morton ` (145 preceding siblings ...) 2021-06-29 2:40 ` [patch 146/192] kasan: integrate the common part of two KASAN tag-based modes Andrew Morton @ 2021-06-29 2:40 ` Andrew Morton 2021-06-29 2:41 ` [patch 148/192] mm: report which part of mem is being freed on initmem case Andrew Morton ` (44 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:40 UTC (permalink / raw) To: akpm, andreyknvl, chinwen.chang, dvyukov, elver, glider, gregkh, Kuan-Ying.Lee, linux-mm, matthias.bgg, mm-commits, nicholas.tang, ryabinin.a.a, torvalds From: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Subject: kasan: add memory corruption identification support for hardware tag-based mode Add memory corruption identification support for hardware tag-based mode. We store one old free pointer tag and free backtrace instead of five because hardware tag-based kasan only has 16 different tags. If we store as many stacks as SW tag-based kasan does(5 stacks), there is high probability to find the same tag in the stacks when out-of-bound issues happened and we will mistake out-of-bound issue for use-after-free. Link: https://lkml.kernel.org/r/20210626100931.22794-4-Kuan-Ying.Lee@mediatek.com Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Suggested-by: Marco Elver <elver@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Chinwen Chang <chinwen.chang@mediatek.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Nicholas Tang <nicholas.tang@mediatek.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- lib/Kconfig.kasan | 2 +- mm/kasan/kasan.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/lib/Kconfig.kasan~kasan-add-memory-corruption-identification-support-for-hardware-tag-based-mode +++ a/lib/Kconfig.kasan @@ -169,7 +169,7 @@ config KASAN_STACK config KASAN_TAGS_IDENTIFY bool "Enable memory corruption identification" - depends on KASAN_SW_TAGS + depends on KASAN_SW_TAGS || KASAN_HW_TAGS help This option enables best-effort identification of bug type (use-after-free or out-of-bounds) at the cost of increased --- a/mm/kasan/kasan.h~kasan-add-memory-corruption-identification-support-for-hardware-tag-based-mode +++ a/mm/kasan/kasan.h @@ -153,7 +153,7 @@ struct kasan_track { depot_stack_handle_t stack; }; -#ifdef CONFIG_KASAN_TAGS_IDENTIFY +#if defined(CONFIG_KASAN_TAGS_IDENTIFY) && defined(CONFIG_KASAN_SW_TAGS) #define KASAN_NR_FREE_STACKS 5 #else #define KASAN_NR_FREE_STACKS 1 _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 148/192] mm: report which part of mem is being freed on initmem case 2021-06-29 2:32 incoming Andrew Morton ` (146 preceding siblings ...) 2021-06-29 2:40 ` [patch 147/192] kasan: add memory corruption identification support for hardware tag-based mode Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 149/192] mm/mmzone.h: simplify is_highmem_idx() Andrew Morton ` (43 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, js07.lee, linux-mm, mm-commits, torvalds From: Jungseung Lee <js07.lee@samsung.com> Subject: mm: report which part of mem is being freed on initmem case Add the details for figuring out which parts of the kernel image is being freed on initmem case. Before: Freeing unused kernel memory: 1024K After: Freeing unused kernel image (initmem) memory: 1024K Link: https://lkml.kernel.org/r/1622706274-4533-1-git-send-email-js07.lee@samsung.com Signed-off-by: Jungseung Lee <js07.lee@samsung.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/mm.h~mm-report-which-part-of-mem-is-being-freed-on-initmem-case +++ a/include/linux/mm.h @@ -2416,7 +2416,7 @@ static inline unsigned long free_initmem extern char __init_begin[], __init_end[]; return free_reserved_area(&__init_begin, &__init_end, - poison, "unused kernel"); + poison, "unused kernel image (initmem)"); } static inline unsigned long get_num_physpages(void) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 149/192] mm/mmzone.h: simplify is_highmem_idx() 2021-06-29 2:32 incoming Andrew Morton ` (147 preceding siblings ...) 2021-06-29 2:41 ` [patch 148/192] mm: report which part of mem is being freed on initmem case Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 150/192] mm: make __dump_page static Andrew Morton ` (42 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, corbet, linux-mm, mm-commits, rppt, torvalds, willy From: Mike Rapoport <rppt@linux.ibm.com> Subject: mm/mmzone.h: simplify is_highmem_idx() There is a lot of historical ifdefery in is_highmem_idx() and its helper zone_movable_is_highmem() that was required because of two different paths for nodes and zones initialization that were selected at compile time. Until commit 3f08a302f533 ("mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP option") the movable_zone variable was only available for configurations that had CONFIG_HAVE_MEMBLOCK_NODE_MAP enabled so the test in zone_movable_is_highmem() used that variable only for such configurations. For other configurations the test checked if the index of ZONE_MOVABLE was greater by 1 than the index of ZONE_HIGMEM and then movable zone was considered a highmem zone. Needless to say, ZONE_MOVABLE - 1 equals ZONE_HIGHMEM by definition when CONFIG_HIGHMEM=y. Commit 3f08a302f533 ("mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP option") made movable_zone variable always available. Since this variable is set to ZONE_HIGHMEM if CONFIG_HIGHMEM is enabled and highmem zone is populated, it is enough to check whether zone_idx == ZONE_MOVABLE && movable_zone == ZONE_HIGMEM to test if zone index points to a highmem zone. Remove zone_movable_is_highmem() that is not used anywhere except is_highmem_idx() and use the test above in is_highmem_idx() instead. Link: https://lkml.kernel.org/r/20210426141927.1314326-3-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) --- a/include/linux/mmzone.h~mm-mmzoneh-simplify-is_highmem_idx +++ a/include/linux/mmzone.h @@ -982,22 +982,11 @@ static inline void zone_set_nid(struct z extern int movable_zone; -#ifdef CONFIG_HIGHMEM -static inline int zone_movable_is_highmem(void) -{ -#ifdef CONFIG_NEED_MULTIPLE_NODES - return movable_zone == ZONE_HIGHMEM; -#else - return (ZONE_MOVABLE - 1) == ZONE_HIGHMEM; -#endif -} -#endif - static inline int is_highmem_idx(enum zone_type idx) { #ifdef CONFIG_HIGHMEM return (idx == ZONE_HIGHMEM || - (idx == ZONE_MOVABLE && zone_movable_is_highmem())); + (idx == ZONE_MOVABLE && movable_zone == ZONE_HIGHMEM)); #else return 0; #endif _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 150/192] mm: make __dump_page static 2021-06-29 2:32 incoming Andrew Morton ` (148 preceding siblings ...) 2021-06-29 2:41 ` [patch 149/192] mm/mmzone.h: simplify is_highmem_idx() Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 151/192] mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt Andrew Morton ` (41 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: make __dump_page static Patch series "Constify struct page arguments". While working on various solutions to the 32-bit struct page size regression, one of the problems I found was the networking stack expects to be able to pass const struct page pointers around, and the mm doesn't provide a lot of const-friendly functions to call. The root tangle of problems is that a lot of functions call VM_BUG_ON_PAGE(), which calls dump_page(), which calls a lot of functions which don't take a const struct page (but could be const). This patch (of 6): The only caller of __dump_page() now opencodes dump_page(), so remove it as an externally visible symbol. Link: https://lkml.kernel.org/r/20210416231531.2521383-1-willy@infradead.org Link: https://lkml.kernel.org/r/20210416231531.2521383-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmdebug.h | 3 +-- mm/debug.c | 2 +- mm/page_alloc.c | 3 +-- 3 files changed, 3 insertions(+), 5 deletions(-) --- a/include/linux/mmdebug.h~mm-make-__dump_page-static +++ a/include/linux/mmdebug.h @@ -9,8 +9,7 @@ struct page; struct vm_area_struct; struct mm_struct; -extern void dump_page(struct page *page, const char *reason); -extern void __dump_page(struct page *page, const char *reason); +void dump_page(struct page *page, const char *reason); void dump_vma(const struct vm_area_struct *vma); void dump_mm(const struct mm_struct *mm); --- a/mm/debug.c~mm-make-__dump_page-static +++ a/mm/debug.c @@ -42,7 +42,7 @@ const struct trace_print_flags vmaflag_n {0, NULL} }; -void __dump_page(struct page *page, const char *reason) +static void __dump_page(struct page *page, const char *reason) { struct page *head = compound_head(page); struct address_space *mapping; --- a/mm/page_alloc.c~mm-make-__dump_page-static +++ a/mm/page_alloc.c @@ -658,8 +658,7 @@ static void bad_page(struct page *page, pr_alert("BUG: Bad page state in process %s pfn:%05lx\n", current->comm, page_to_pfn(page)); - __dump_page(page, reason); - dump_page_owner(page); + dump_page(page, reason); print_modules(); dump_stack(); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 151/192] mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt 2021-06-29 2:32 incoming Andrew Morton ` (149 preceding siblings ...) 2021-06-29 2:41 ` [patch 150/192] mm: make __dump_page static Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 152/192] mm/debug: factor PagePoisoned out of __dump_page Andrew Morton ` (40 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, atomlin, linux-mm, mhocko, mm-commits, torvalds, vbabka, willy From: Aaron Tomlin <atomlin@redhat.com> Subject: mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt A customer experienced a low-memory situation and decided to issue a SIGKILL (i.e. a fatal signal). Instead of promptly terminating as one would expect, the aforementioned task remained unresponsive. Further investigation indicated that the task was "stuck" in the reclaim/compaction retry loop. Now, it does not make sense to retry compaction when a fatal signal is pending. In the context of try_to_compact_pages(), indeed COMPACT_SKIPPED can be returned; albeit, not every zone, on the zone list, would be considered in the case a fatal signal is found to be pending. Yet, in should_compact_retry(), given the last known compaction result, each zone, on the zone list, can be considered/or checked (see compaction_zonelist_suitable()). For example, if a zone was found to succeed, then reclaim/compaction would be tried again (notwithstanding the above). This patch ensures that compaction is not needlessly retried irrespective of the last known compaction result e.g. if it was skipped, in the unlikely case a fatal signal is found pending. So, OOM is at least attempted. Link: https://lkml.kernel.org/r/20210520142901.3371299-1-atomlin@redhat.com Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@suse.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/mm/page_alloc.c~mm-page_alloc-bail-out-on-fatal-signal-during-reclaim-compaction-retry-attempt +++ a/mm/page_alloc.c @@ -4251,6 +4251,9 @@ should_compact_retry(struct alloc_contex if (!order) return false; + if (fatal_signal_pending(current)) + return false; + if (compaction_made_progress(compact_result)) (*compaction_retries)++; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 152/192] mm/debug: factor PagePoisoned out of __dump_page 2021-06-29 2:32 incoming Andrew Morton ` (150 preceding siblings ...) 2021-06-29 2:41 ` [patch 151/192] mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 153/192] mm/page_owner: constify dump_page_owner Andrew Morton ` (39 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm/debug: factor PagePoisoned out of __dump_page Move the PagePoisoned test into dump_page(). Skip the hex print for poisoned pages -- we know they're full of ffffffff. Move the reason printing from __dump_page() to dump_page(). Link: https://lkml.kernel.org/r/20210416231531.2521383-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/debug.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) --- a/mm/debug.c~mm-debug-factor-pagepoisoned-out-of-__dump_page +++ a/mm/debug.c @@ -42,11 +42,10 @@ const struct trace_print_flags vmaflag_n {0, NULL} }; -static void __dump_page(struct page *page, const char *reason) +static void __dump_page(struct page *page) { struct page *head = compound_head(page); struct address_space *mapping; - bool page_poisoned = PagePoisoned(page); bool compound = PageCompound(page); /* * Accessing the pageblock without the zone lock. It could change to @@ -58,16 +57,6 @@ static void __dump_page(struct page *pag int mapcount; char *type = ""; - /* - * If struct page is poisoned don't access Page*() functions as that - * leads to recursive loop. Page*() check for poisoned pages, and calls - * dump_page() when detected. - */ - if (page_poisoned) { - pr_warn("page:%px is uninitialized and poisoned", page); - goto hex_only; - } - if (page < head || (page >= head + MAX_ORDER_NR_PAGES)) { /* * Corrupt page, so we cannot call page_mapping. Instead, do a @@ -173,8 +162,6 @@ out_mapping: pr_warn("%sflags: %#lx(%pGp)%s\n", type, head->flags, &head->flags, page_cma ? " CMA" : ""); - -hex_only: print_hex_dump(KERN_WARNING, "raw: ", DUMP_PREFIX_NONE, 32, sizeof(unsigned long), page, sizeof(struct page), false); @@ -182,14 +169,16 @@ hex_only: print_hex_dump(KERN_WARNING, "head: ", DUMP_PREFIX_NONE, 32, sizeof(unsigned long), head, sizeof(struct page), false); - - if (reason) - pr_warn("page dumped because: %s\n", reason); } void dump_page(struct page *page, const char *reason) { - __dump_page(page, reason); + if (PagePoisoned(page)) + pr_warn("page:%p is uninitialized and poisoned", page); + else + __dump_page(page); + if (reason) + pr_warn("page dumped because: %s\n", reason); dump_page_owner(page); } EXPORT_SYMBOL(dump_page); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 153/192] mm/page_owner: constify dump_page_owner 2021-06-29 2:32 incoming Andrew Morton ` (151 preceding siblings ...) 2021-06-29 2:41 ` [patch 152/192] mm/debug: factor PagePoisoned out of __dump_page Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 154/192] mm: make compound_head const-preserving Andrew Morton ` (38 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm/page_owner: constify dump_page_owner dump_page_owner() only uses struct page to find the page_ext, and lookup_page_ext() already takes a const argument. Link: https://lkml.kernel.org/r/20210416231531.2521383-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/page_owner.h | 6 +++--- mm/page_owner.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) --- a/include/linux/page_owner.h~mm-page_owner-constify-dump_page_owner +++ a/include/linux/page_owner.h @@ -14,7 +14,7 @@ extern void __set_page_owner(struct page extern void __split_page_owner(struct page *page, unsigned int nr); extern void __copy_page_owner(struct page *oldpage, struct page *newpage); extern void __set_page_owner_migrate_reason(struct page *page, int reason); -extern void __dump_page_owner(struct page *page); +extern void __dump_page_owner(const struct page *page); extern void pagetypeinfo_showmixedcount_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone); @@ -46,7 +46,7 @@ static inline void set_page_owner_migrat if (static_branch_unlikely(&page_owner_inited)) __set_page_owner_migrate_reason(page, reason); } -static inline void dump_page_owner(struct page *page) +static inline void dump_page_owner(const struct page *page) { if (static_branch_unlikely(&page_owner_inited)) __dump_page_owner(page); @@ -69,7 +69,7 @@ static inline void copy_page_owner(struc static inline void set_page_owner_migrate_reason(struct page *page, int reason) { } -static inline void dump_page_owner(struct page *page) +static inline void dump_page_owner(const struct page *page) { } #endif /* CONFIG_PAGE_OWNER */ --- a/mm/page_owner.c~mm-page_owner-constify-dump_page_owner +++ a/mm/page_owner.c @@ -392,7 +392,7 @@ err: return -ENOMEM; } -void __dump_page_owner(struct page *page) +void __dump_page_owner(const struct page *page) { struct page_ext *page_ext = lookup_page_ext(page); struct page_owner *page_owner; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 154/192] mm: make compound_head const-preserving 2021-06-29 2:32 incoming Andrew Morton ` (152 preceding siblings ...) 2021-06-29 2:41 ` [patch 153/192] mm/page_owner: constify dump_page_owner Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 155/192] mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype Andrew Morton ` (37 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: make compound_head const-preserving If you pass a const pointer to compound_head(), you get a const pointer back; if you pass a mutable pointer, you get a mutable pointer back. Also remove an unnecessary forward definition of struct page; we're about to dereference page->compound_head, so it must already have been defined. Link: https://lkml.kernel.org/r/20210416231531.2521383-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/page-flags.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/include/linux/page-flags.h~mm-make-compound_head-const-preserving +++ a/include/linux/page-flags.h @@ -177,17 +177,17 @@ enum pageflags { #ifndef __GENERATING_BOUNDS_H -struct page; /* forward declaration */ - -static inline struct page *compound_head(struct page *page) +static inline unsigned long _compound_head(const struct page *page) { unsigned long head = READ_ONCE(page->compound_head); if (unlikely(head & 1)) - return (struct page *) (head - 1); - return page; + return head - 1; + return (unsigned long)page; } +#define compound_head(page) ((typeof(page))_compound_head(page)) + static __always_inline int PageTail(struct page *page) { return READ_ONCE(page->compound_head) & 1; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 155/192] mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype 2021-06-29 2:32 incoming Andrew Morton ` (153 preceding siblings ...) 2021-06-29 2:41 ` [patch 154/192] mm: make compound_head const-preserving Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 156/192] mm: constify page_count and page_ref_count Andrew Morton ` (36 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype The struct page is not modified by these routines, so it can be marked const. Link: https://lkml.kernel.org/r/20210416231531.2521383-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/pageblock-flags.h | 2 +- mm/page_alloc.c | 13 +++++++------ 2 files changed, 8 insertions(+), 7 deletions(-) --- a/include/linux/pageblock-flags.h~mm-constify-get_pfnblock_flags_mask-and-get_pfnblock_migratetype +++ a/include/linux/pageblock-flags.h @@ -54,7 +54,7 @@ extern unsigned int pageblock_order; /* Forward declaration */ struct page; -unsigned long get_pfnblock_flags_mask(struct page *page, +unsigned long get_pfnblock_flags_mask(const struct page *page, unsigned long pfn, unsigned long mask); --- a/mm/page_alloc.c~mm-constify-get_pfnblock_flags_mask-and-get_pfnblock_migratetype +++ a/mm/page_alloc.c @@ -474,7 +474,7 @@ static inline bool defer_init(int nid, u #endif /* Return a pointer to the bitmap storing bits affecting a block of pages */ -static inline unsigned long *get_pageblock_bitmap(struct page *page, +static inline unsigned long *get_pageblock_bitmap(const struct page *page, unsigned long pfn) { #ifdef CONFIG_SPARSEMEM @@ -484,7 +484,7 @@ static inline unsigned long *get_pageblo #endif /* CONFIG_SPARSEMEM */ } -static inline int pfn_to_bitidx(struct page *page, unsigned long pfn) +static inline int pfn_to_bitidx(const struct page *page, unsigned long pfn) { #ifdef CONFIG_SPARSEMEM pfn &= (PAGES_PER_SECTION-1); @@ -495,7 +495,7 @@ static inline int pfn_to_bitidx(struct p } static __always_inline -unsigned long __get_pfnblock_flags_mask(struct page *page, +unsigned long __get_pfnblock_flags_mask(const struct page *page, unsigned long pfn, unsigned long mask) { @@ -520,13 +520,14 @@ unsigned long __get_pfnblock_flags_mask( * * Return: pageblock_bits flags */ -unsigned long get_pfnblock_flags_mask(struct page *page, unsigned long pfn, - unsigned long mask) +unsigned long get_pfnblock_flags_mask(const struct page *page, + unsigned long pfn, unsigned long mask) { return __get_pfnblock_flags_mask(page, pfn, mask); } -static __always_inline int get_pfnblock_migratetype(struct page *page, unsigned long pfn) +static __always_inline int get_pfnblock_migratetype(const struct page *page, + unsigned long pfn) { return __get_pfnblock_flags_mask(page, pfn, MIGRATETYPE_MASK); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 156/192] mm: constify page_count and page_ref_count 2021-06-29 2:32 incoming Andrew Morton ` (154 preceding siblings ...) 2021-06-29 2:41 ` [patch 155/192] mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 157/192] mm: optimise nth_page for contiguous memmap Andrew Morton ` (35 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, anshuman.khandual, linux-mm, mm-commits, torvalds, vbabka, william.kucharski, willy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: constify page_count and page_ref_count Now that compound_head() accepts a const struct page pointer, these two functions can be marked as not modifying the page pointer they are passed. Link: https://lkml.kernel.org/r/20210416231531.2521383-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/page_ref.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/include/linux/page_ref.h~mm-constify-page_count-and-page_ref_count +++ a/include/linux/page_ref.h @@ -62,12 +62,12 @@ static inline void __page_ref_unfreeze(s #endif -static inline int page_ref_count(struct page *page) +static inline int page_ref_count(const struct page *page) { return atomic_read(&page->_refcount); } -static inline int page_count(struct page *page) +static inline int page_count(const struct page *page) { return atomic_read(&compound_head(page)->_refcount); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 157/192] mm: optimise nth_page for contiguous memmap 2021-06-29 2:32 incoming Andrew Morton ` (155 preceding siblings ...) 2021-06-29 2:41 ` [patch 156/192] mm: constify page_count and page_ref_count Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 158/192] mm/page_alloc: switch to pr_debug Andrew Morton ` (34 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, chris, david, dougg, fujita.tomonori, hch, linux-mm, mm-commits, tj, torvalds, vbabka, willy, ziy From: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: mm: optimise nth_page for contiguous memmap If the memmap is virtually contiguous (either because we're using a virtually mapped memmap or because we don't support a discontig memmap at all), then we can implement nth_page() by simple addition. Contrary to popular belief, the compiler is not able to optimise this itself for a vmemmap configuration. This reduces one example user (sg.c) by four instructions: struct page *page = nth_page(rsv_schp->pages[k], offset >> PAGE_SHIFT); before: 49 8b 45 70 mov 0x70(%r13),%rax 48 63 c9 movslq %ecx,%rcx 48 c1 eb 0c shr $0xc,%rbx 48 8b 04 c8 mov (%rax,%rcx,8),%rax 48 2b 05 00 00 00 00 sub 0x0(%rip),%rax R_X86_64_PC32 vmemmap_base-0x4 48 c1 f8 06 sar $0x6,%rax 48 01 d8 add %rbx,%rax 48 c1 e0 06 shl $0x6,%rax 48 03 05 00 00 00 00 add 0x0(%rip),%rax R_X86_64_PC32 vmemmap_base-0x4 after: 49 8b 45 70 mov 0x70(%r13),%rax 48 63 c9 movslq %ecx,%rcx 48 c1 eb 0c shr $0xc,%rbx 48 c1 e3 06 shl $0x6,%rbx 48 03 1c c8 add (%rax,%rcx,8),%rbx Link: https://lkml.kernel.org/r/20210413194625.1472345-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Tejun Heo <tj@kernel.org> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Douglas Gilbert <dougg@torque.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) --- a/include/linux/mm.h~mm-optimise-nth_page-for-contiguous-memmap +++ a/include/linux/mm.h @@ -234,7 +234,11 @@ int overcommit_policy_handler(struct ctl int __add_to_page_cache_locked(struct page *page, struct address_space *mapping, pgoff_t index, gfp_t gfp, void **shadowp); +#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) +#else +#define nth_page(page,n) ((page) + (n)) +#endif /* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 158/192] mm/page_alloc: switch to pr_debug 2021-06-29 2:32 incoming Andrew Morton ` (156 preceding siblings ...) 2021-06-29 2:41 ` [patch 157/192] mm: optimise nth_page for contiguous memmap Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 159/192] kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 Andrew Morton ` (33 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, hkallweit1, linux-mm, mm-commits, torvalds From: Heiner Kallweit <hkallweit1@gmail.com> Subject: mm/page_alloc: switch to pr_debug Having such debug messages in the dmesg log may confuse users. Therefore restrict debug output to cases where DEBUG is defined or dynamic debugging is enabled for the respective code piece. Link: https://lkml.kernel.org/r/976adb93-3041-ce63-48fc-55a6096a51c1@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-switch-to-pr_debug +++ a/mm/page_alloc.c @@ -6770,9 +6770,8 @@ static __meminit void zone_pcp_init(stru zone->pageset_batch = BOOT_PAGESET_BATCH; if (populated_zone(zone)) - printk(KERN_DEBUG " %s zone: %lu pages, LIFO batch:%u\n", - zone->name, zone->present_pages, - zone_batchsize(zone)); + pr_debug(" %s zone: %lu pages, LIFO batch:%u\n", zone->name, + zone->present_pages, zone_batchsize(zone)); } void __meminit init_currently_empty_zone(struct zone *zone, @@ -7042,8 +7041,7 @@ static void __init calculate_node_totalp pgdat->node_spanned_pages = totalpages; pgdat->node_present_pages = realtotalpages; - printk(KERN_DEBUG "On node %d totalpages: %lu\n", pgdat->node_id, - realtotalpages); + pr_debug("On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages); } #ifndef CONFIG_SPARSEMEM @@ -7243,9 +7241,8 @@ static void __init free_area_init_core(s if (freesize >= memmap_pages) { freesize -= memmap_pages; if (memmap_pages) - printk(KERN_DEBUG - " %s zone: %lu pages used for memmap\n", - zone_names[j], memmap_pages); + pr_debug(" %s zone: %lu pages used for memmap\n", + zone_names[j], memmap_pages); } else pr_warn(" %s zone: %lu pages exceeds freesize %lu\n", zone_names[j], memmap_pages, freesize); @@ -7254,8 +7251,7 @@ static void __init free_area_init_core(s /* Account for reserved pages */ if (j == 0 && freesize > dma_reserve) { freesize -= dma_reserve; - printk(KERN_DEBUG " %s zone: %lu pages reserved\n", - zone_names[0], dma_reserve); + pr_debug(" %s zone: %lu pages reserved\n", zone_names[0], dma_reserve); } if (!is_highmem_idx(j)) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 159/192] kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 2021-06-29 2:32 incoming Andrew Morton ` (157 preceding siblings ...) 2021-06-29 2:41 ` [patch 158/192] mm/page_alloc: switch to pr_debug Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 160/192] mm/page_alloc: split per cpu page lists and zone stats Andrew Morton ` (32 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: acme, akpm, andrii, haoluo, jolsa, linux-mm, mgorman, mm-commits, msuchanek, torvalds From: Andrii Nakryiko <andrii@kernel.org> Subject: kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 Commit "mm/page_alloc: convert per-cpu list protection to local_lock" will introduce a zero-sized per-CPU variable, which causes pahole to generate invalid BTF. Only pahole versions 1.18 through 1.21 are impacted, as before 1.18 pahole doesn't know anything about per-CPU variables, and 1.22 contains the proper fix for the issue. Luckily, pahole 1.18 got --skip_encoding_btf_vars option disabling BTF generation for per-CPU variables in anticipation of some unanticipated problems. So use this escape hatch to disable per-CPU var BTF info on those problematic pahole versions. Users relying on availability of per-CPU var BTFs would need to upgrade to pahole 1.22+, but everyone won't notice any regressions. Link: https://lkml.kernel.org/r/20210530002536.3193829-1-andrii@kernel.org Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Mel Gorman <mgorman@techsingularity.net> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Hao Luo <haoluo@google.com> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- scripts/link-vmlinux.sh | 4 ++++ 1 file changed, 4 insertions(+) --- a/scripts/link-vmlinux.sh~kbuild-skip-per-cpu-btf-generation-for-pahole-v118-v121 +++ a/scripts/link-vmlinux.sh @@ -235,6 +235,10 @@ gen_btf() vmlinux_link ${1} + if [ "${pahole_ver}" -ge "118" ] && [ "${pahole_ver}" -le "121" ]; then + # pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars + extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_vars" + fi if [ "${pahole_ver}" -ge "121" ]; then extra_paholeopt="${extra_paholeopt} --btf_gen_floats" fi _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 160/192] mm/page_alloc: split per cpu page lists and zone stats 2021-06-29 2:32 incoming Andrew Morton ` (158 preceding siblings ...) 2021-06-29 2:41 ` [patch 159/192] kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 161/192] mm/page_alloc: convert per-cpu list protection to local_lock Andrew Morton ` (31 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: split per cpu page lists and zone stats The PCP (per-cpu page allocator in page_alloc.c) shares locking requirements with vmstat and the zone lock which is inconvenient and causes some issues. For example, the PCP list and vmstat share the same per-cpu space meaning that it's possible that vmstat updates dirty cache lines holding per-cpu lists across CPUs unless padding is used. Second, PREEMPT_RT does not want to disable IRQs for too long in the page allocator. This series splits the locking requirements and uses locks types more suitable for PREEMPT_RT, reduces the time when special locking is required for stats and reduces the time when IRQs need to be disabled on !PREEMPT_RT kernels. Why local_lock? PREEMPT_RT considers the following sequence to be unsafe as documented in Documentation/locking/locktypes.rst local_irq_disable(); spin_lock(&lock); The pcp allocator has this sequence for rmqueue_pcplist (local_irq_save) -> __rmqueue_pcplist -> rmqueue_bulk (spin_lock). While it's possible to separate this out, it generally means there are points where we enable IRQs and reenable them again immediately. To prevent a migration and the per-cpu pointer going stale, migrate_disable is also needed. That is a custom lock that is similar, but worse, than local_lock. Furthermore, on PREEMPT_RT, it's undesirable to leave IRQs disabled for too long. By converting to local_lock which disables migration on PREEMPT_RT, the locking requirements can be separated and start moving the protections for PCP, stats and the zone lock to PREEMPT_RT-safe equivalent locking. As a bonus, local_lock also means that PROVE_LOCKING does something useful. After that, it's obvious that zone_statistics incurs too much overhead and leaves IRQs disabled for longer than necessary on !PREEMPT_RT kernels. zone_statistics uses perfectly accurate counters requiring IRQs be disabled for parallel RMW sequences when inaccurate ones like vm_events would do. The series makes the NUMA statistics (NUMA_HIT and friends) inaccurate counters that then require no special protection on !PREEMPT_RT. The bulk page allocator can then do stat updates in bulk with IRQs enabled which should improve the efficiency. Technically, this could have been done without the local_lock and vmstat conversion work and the order simply reflects the timing of when different series were implemented. Finally, there are places where we conflate IRQs being disabled for the PCP with the IRQ-safe zone spinlock. The remainder of the series reduces the scope of what is protected by disabled IRQs on !PREEMPT_RT kernels. By the end of the series, page_alloc.c does not call local_irq_save so the locking scope is a bit clearer. The one exception is that modifying NR_FREE_PAGES still happens in places where it's known the IRQs are disabled as it's harmless for PREEMPT_RT and would be expensive to split the locking there. No performance data is included because despite the overhead of the stats, it's within the noise for most workloads on !PREEMPT_RT. However, Jesper Dangaard Brouer ran a page allocation microbenchmark on a E5-1650 v4 @ 3.60GHz CPU on the first version of this series. Focusing on the array variant of the bulk page allocator reveals the following. (CPU: Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz) ARRAY variant: time_bulk_page_alloc_free_array: step=bulk size Baseline Patched 1 56.383 54.225 (+3.83%) 2 40.047 35.492 (+11.38%) 3 37.339 32.643 (+12.58%) 4 35.578 30.992 (+12.89%) 8 33.592 29.606 (+11.87%) 16 32.362 28.532 (+11.85%) 32 31.476 27.728 (+11.91%) 64 30.633 27.252 (+11.04%) 128 30.596 27.090 (+11.46%) While this is a positive outcome, the series is more likely to be interesting to the RT people in terms of getting parts of the PREEMPT_RT tree into mainline. This patch (of 9): The per-cpu page allocator lists and the per-cpu vmstat deltas are stored in the same struct per_cpu_pages even though vmstats have no direct impact on the per-cpu page lists. This is inconsistent because the vmstats for a node are stored on a dedicated structure. The bigger issue is that the per_cpu_pages structure is not cache-aligned and stat updates either cache conflict with adjacent per-cpu lists incurring a runtime cost or padding is required incurring a memory cost. This patch splits the per-cpu pagelists and the vmstat deltas into separate structures. It's mostly a mechanical conversion but some variable renaming is done to clearly distinguish the per-cpu pages structure (pcp) from the vmstats (pzstats). Superficially, this appears to increase the size of the per_cpu_pages structure but the movement of expire fills a structure hole so there is no impact overall. [mgorman@techsingularity.net: make it W=1 cleaner] Link: https://lkml.kernel.org/r/20210514144622.GA3735@techsingularity.net [mgorman@techsingularity.net: make it W=1 even cleaner] Link: https://lkml.kernel.org/r/20210516140705.GB3735@techsingularity.net [lkp@intel.com: check struct per_cpu_zonestat has a non-zero size] [vbabka@suse.cz: Init zone->per_cpu_zonestats properly] Link: https://lkml.kernel.org/r/20210512095458.30632-1-mgorman@techsingularity.net Link: https://lkml.kernel.org/r/20210512095458.30632-2-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 18 +++---- include/linux/vmstat.h | 8 +-- mm/page_alloc.c | 85 ++++++++++++++++++--------------- mm/vmstat.c | 98 ++++++++++++++++++++------------------- 4 files changed, 113 insertions(+), 96 deletions(-) --- a/include/linux/mmzone.h~mm-page_alloc-split-per-cpu-page-lists-and-zone-stats +++ a/include/linux/mmzone.h @@ -341,20 +341,21 @@ struct per_cpu_pages { int count; /* number of pages in the list */ int high; /* high watermark, emptying needed */ int batch; /* chunk size for buddy add/remove */ +#ifdef CONFIG_NUMA + int expire; /* When 0, remote pagesets are drained */ +#endif /* Lists of pages, one per migrate type stored on the pcp-lists */ struct list_head lists[MIGRATE_PCPTYPES]; }; -struct per_cpu_pageset { - struct per_cpu_pages pcp; -#ifdef CONFIG_NUMA - s8 expire; - u16 vm_numa_stat_diff[NR_VM_NUMA_STAT_ITEMS]; -#endif +struct per_cpu_zonestat { #ifdef CONFIG_SMP - s8 stat_threshold; s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS]; + s8 stat_threshold; +#endif +#ifdef CONFIG_NUMA + u16 vm_numa_stat_diff[NR_VM_NUMA_STAT_ITEMS]; #endif }; @@ -484,7 +485,8 @@ struct zone { int node; #endif struct pglist_data *zone_pgdat; - struct per_cpu_pageset __percpu *pageset; + struct per_cpu_pages __percpu *per_cpu_pageset; + struct per_cpu_zonestat __percpu *per_cpu_zonestats; /* * the high and batch values are copied to individual pagesets for * faster access --- a/include/linux/vmstat.h~mm-page_alloc-split-per-cpu-page-lists-and-zone-stats +++ a/include/linux/vmstat.h @@ -163,7 +163,7 @@ static inline unsigned long zone_numa_st int cpu; for_each_online_cpu(cpu) - x += per_cpu_ptr(zone->pageset, cpu)->vm_numa_stat_diff[item]; + x += per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_stat_diff[item]; return x; } @@ -236,7 +236,7 @@ static inline unsigned long zone_page_st #ifdef CONFIG_SMP int cpu; for_each_online_cpu(cpu) - x += per_cpu_ptr(zone->pageset, cpu)->vm_stat_diff[item]; + x += per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_stat_diff[item]; if (x < 0) x = 0; @@ -291,7 +291,7 @@ struct ctl_table; int vmstat_refresh(struct ctl_table *, int write, void *buffer, size_t *lenp, loff_t *ppos); -void drain_zonestat(struct zone *zone, struct per_cpu_pageset *); +void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *); int calculate_pressure_threshold(struct zone *zone); int calculate_normal_threshold(struct zone *zone); @@ -399,7 +399,7 @@ static inline void cpu_vm_stats_fold(int static inline void quiet_vmstat(void) { } static inline void drain_zonestat(struct zone *zone, - struct per_cpu_pageset *pset) { } + struct per_cpu_zonestat *pzstats) { } #endif /* CONFIG_SMP */ static inline void __mod_zone_freepage_state(struct zone *zone, int nr_pages, --- a/mm/page_alloc.c~mm-page_alloc-split-per-cpu-page-lists-and-zone-stats +++ a/mm/page_alloc.c @@ -3026,15 +3026,14 @@ void drain_zone_pages(struct zone *zone, static void drain_pages_zone(unsigned int cpu, struct zone *zone) { unsigned long flags; - struct per_cpu_pageset *pset; struct per_cpu_pages *pcp; local_irq_save(flags); - pset = per_cpu_ptr(zone->pageset, cpu); - pcp = &pset->pcp; + pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); if (pcp->count) free_pcppages_bulk(zone, pcp->count, pcp); + local_irq_restore(flags); } @@ -3133,7 +3132,7 @@ static void __drain_all_pages(struct zon * disables preemption as part of its processing */ for_each_online_cpu(cpu) { - struct per_cpu_pageset *pcp; + struct per_cpu_pages *pcp; struct zone *z; bool has_pcps = false; @@ -3144,13 +3143,13 @@ static void __drain_all_pages(struct zon */ has_pcps = true; } else if (zone) { - pcp = per_cpu_ptr(zone->pageset, cpu); - if (pcp->pcp.count) + pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); + if (pcp->count) has_pcps = true; } else { for_each_populated_zone(z) { - pcp = per_cpu_ptr(z->pageset, cpu); - if (pcp->pcp.count) { + pcp = per_cpu_ptr(z->per_cpu_pageset, cpu); + if (pcp->count) { has_pcps = true; break; } @@ -3280,7 +3279,7 @@ static void free_unref_page_commit(struc migratetype = MIGRATE_MOVABLE; } - pcp = &this_cpu_ptr(zone->pageset)->pcp; + pcp = this_cpu_ptr(zone->per_cpu_pageset); list_add(&page->lru, &pcp->lists[migratetype]); pcp->count++; if (pcp->count >= READ_ONCE(pcp->high)) @@ -3496,7 +3495,7 @@ static struct page *rmqueue_pcplist(stru unsigned long flags; local_irq_save(flags); - pcp = &this_cpu_ptr(zone->pageset)->pcp; + pcp = this_cpu_ptr(zone->per_cpu_pageset); list = &pcp->lists[migratetype]; page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); if (page) { @@ -5105,7 +5104,7 @@ unsigned long __alloc_pages_bulk(gfp_t g /* Attempt the batch allocation */ local_irq_save(flags); - pcp = &this_cpu_ptr(zone->pageset)->pcp; + pcp = this_cpu_ptr(zone->per_cpu_pageset); pcp_list = &pcp->lists[ac.migratetype]; while (nr_populated < nr_pages) { @@ -5720,7 +5719,7 @@ void show_free_areas(unsigned int filter continue; for_each_online_cpu(cpu) - free_pcp += per_cpu_ptr(zone->pageset, cpu)->pcp.count; + free_pcp += per_cpu_ptr(zone->per_cpu_pageset, cpu)->count; } printk("active_anon:%lu inactive_anon:%lu isolated_anon:%lu\n" @@ -5812,7 +5811,7 @@ void show_free_areas(unsigned int filter free_pcp = 0; for_each_online_cpu(cpu) - free_pcp += per_cpu_ptr(zone->pageset, cpu)->pcp.count; + free_pcp += per_cpu_ptr(zone->per_cpu_pageset, cpu)->count; show_node(zone); printk(KERN_CONT @@ -5853,7 +5852,7 @@ void show_free_areas(unsigned int filter K(zone_page_state(zone, NR_MLOCK)), K(zone_page_state(zone, NR_BOUNCE)), K(free_pcp), - K(this_cpu_read(zone->pageset->pcp.count)), + K(this_cpu_read(zone->per_cpu_pageset->count)), K(zone_page_state(zone, NR_FREE_CMA_PAGES))); printk("lowmem_reserve[]:"); for (i = 0; i < MAX_NR_ZONES; i++) @@ -6180,11 +6179,12 @@ static void build_zonelists(pg_data_t *p * not check if the processor is online before following the pageset pointer. * Other parts of the kernel may not check if the zone is available. */ -static void pageset_init(struct per_cpu_pageset *p); +static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonestat *pzstats); /* These effectively disable the pcplists in the boot pageset completely */ #define BOOT_PAGESET_HIGH 0 #define BOOT_PAGESET_BATCH 1 -static DEFINE_PER_CPU(struct per_cpu_pageset, boot_pageset); +static DEFINE_PER_CPU(struct per_cpu_pages, boot_pageset); +static DEFINE_PER_CPU(struct per_cpu_zonestat, boot_zonestats); static DEFINE_PER_CPU(struct per_cpu_nodestat, boot_nodestats); static void __build_all_zonelists(void *data) @@ -6251,7 +6251,7 @@ build_all_zonelists_init(void) * (a chicken-egg dilemma). */ for_each_possible_cpu(cpu) - pageset_init(&per_cpu(boot_pageset, cpu)); + per_cpu_pages_init(&per_cpu(boot_pageset, cpu), &per_cpu(boot_zonestats, cpu)); mminit_verify_zonelist(); cpuset_init_current_mems_allowed(); @@ -6650,14 +6650,13 @@ static void pageset_update(struct per_cp WRITE_ONCE(pcp->high, high); } -static void pageset_init(struct per_cpu_pageset *p) +static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonestat *pzstats) { - struct per_cpu_pages *pcp; int migratetype; - memset(p, 0, sizeof(*p)); + memset(pcp, 0, sizeof(*pcp)); + memset(pzstats, 0, sizeof(*pzstats)); - pcp = &p->pcp; for (migratetype = 0; migratetype < MIGRATE_PCPTYPES; migratetype++) INIT_LIST_HEAD(&pcp->lists[migratetype]); @@ -6674,12 +6673,12 @@ static void pageset_init(struct per_cpu_ static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high, unsigned long batch) { - struct per_cpu_pageset *p; + struct per_cpu_pages *pcp; int cpu; for_each_possible_cpu(cpu) { - p = per_cpu_ptr(zone->pageset, cpu); - pageset_update(&p->pcp, high, batch); + pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); + pageset_update(pcp, high, batch); } } @@ -6714,13 +6713,20 @@ static void zone_set_pageset_high_and_ba void __meminit setup_zone_pageset(struct zone *zone) { - struct per_cpu_pageset *p; int cpu; - zone->pageset = alloc_percpu(struct per_cpu_pageset); + /* Size may be 0 on !SMP && !NUMA */ + if (sizeof(struct per_cpu_zonestat) > 0) + zone->per_cpu_zonestats = alloc_percpu(struct per_cpu_zonestat); + + zone->per_cpu_pageset = alloc_percpu(struct per_cpu_pages); for_each_possible_cpu(cpu) { - p = per_cpu_ptr(zone->pageset, cpu); - pageset_init(p); + struct per_cpu_pages *pcp; + struct per_cpu_zonestat *pzstats; + + pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); + pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); + per_cpu_pages_init(pcp, pzstats); } zone_set_pageset_high_and_batch(zone); @@ -6747,9 +6753,9 @@ void __init setup_per_cpu_pageset(void) * the nodes these zones are associated with. */ for_each_possible_cpu(cpu) { - struct per_cpu_pageset *pcp = &per_cpu(boot_pageset, cpu); - memset(pcp->vm_numa_stat_diff, 0, - sizeof(pcp->vm_numa_stat_diff)); + struct per_cpu_zonestat *pzstats = &per_cpu(boot_zonestats, cpu); + memset(pzstats->vm_numa_stat_diff, 0, + sizeof(pzstats->vm_numa_stat_diff)); } #endif @@ -6765,7 +6771,8 @@ static __meminit void zone_pcp_init(stru * relies on the ability of the linker to provide the * offset of a (static) per cpu variable into the per cpu area. */ - zone->pageset = &boot_pageset; + zone->per_cpu_pageset = &boot_pageset; + zone->per_cpu_zonestats = &boot_zonestats; zone->pageset_high = BOOT_PAGESET_HIGH; zone->pageset_batch = BOOT_PAGESET_BATCH; @@ -9046,15 +9053,17 @@ void zone_pcp_enable(struct zone *zone) void zone_pcp_reset(struct zone *zone) { int cpu; - struct per_cpu_pageset *pset; + struct per_cpu_zonestat *pzstats; - if (zone->pageset != &boot_pageset) { + if (zone->per_cpu_pageset != &boot_pageset) { for_each_online_cpu(cpu) { - pset = per_cpu_ptr(zone->pageset, cpu); - drain_zonestat(zone, pset); + pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); + drain_zonestat(zone, pzstats); } - free_percpu(zone->pageset); - zone->pageset = &boot_pageset; + free_percpu(zone->per_cpu_pageset); + free_percpu(zone->per_cpu_zonestats); + zone->per_cpu_pageset = &boot_pageset; + zone->per_cpu_zonestats = &boot_zonestats; } } --- a/mm/vmstat.c~mm-page_alloc-split-per-cpu-page-lists-and-zone-stats +++ a/mm/vmstat.c @@ -44,7 +44,7 @@ static void zero_zone_numa_counters(stru for (item = 0; item < NR_VM_NUMA_STAT_ITEMS; item++) { atomic_long_set(&zone->vm_numa_stat[item], 0); for_each_online_cpu(cpu) - per_cpu_ptr(zone->pageset, cpu)->vm_numa_stat_diff[item] + per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_stat_diff[item] = 0; } } @@ -266,7 +266,7 @@ void refresh_zone_stat_thresholds(void) for_each_online_cpu(cpu) { int pgdat_threshold; - per_cpu_ptr(zone->pageset, cpu)->stat_threshold + per_cpu_ptr(zone->per_cpu_zonestats, cpu)->stat_threshold = threshold; /* Base nodestat threshold on the largest populated zone. */ @@ -303,7 +303,7 @@ void set_pgdat_percpu_threshold(pg_data_ threshold = (*calculate_pressure)(zone); for_each_online_cpu(cpu) - per_cpu_ptr(zone->pageset, cpu)->stat_threshold + per_cpu_ptr(zone->per_cpu_zonestats, cpu)->stat_threshold = threshold; } } @@ -316,7 +316,7 @@ void set_pgdat_percpu_threshold(pg_data_ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item, long delta) { - struct per_cpu_pageset __percpu *pcp = zone->pageset; + struct per_cpu_zonestat __percpu *pcp = zone->per_cpu_zonestats; s8 __percpu *p = pcp->vm_stat_diff + item; long x; long t; @@ -389,7 +389,7 @@ EXPORT_SYMBOL(__mod_node_page_state); */ void __inc_zone_state(struct zone *zone, enum zone_stat_item item) { - struct per_cpu_pageset __percpu *pcp = zone->pageset; + struct per_cpu_zonestat __percpu *pcp = zone->per_cpu_zonestats; s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; @@ -435,7 +435,7 @@ EXPORT_SYMBOL(__inc_node_page_state); void __dec_zone_state(struct zone *zone, enum zone_stat_item item) { - struct per_cpu_pageset __percpu *pcp = zone->pageset; + struct per_cpu_zonestat __percpu *pcp = zone->per_cpu_zonestats; s8 __percpu *p = pcp->vm_stat_diff + item; s8 v, t; @@ -495,7 +495,7 @@ EXPORT_SYMBOL(__dec_node_page_state); static inline void mod_zone_state(struct zone *zone, enum zone_stat_item item, long delta, int overstep_mode) { - struct per_cpu_pageset __percpu *pcp = zone->pageset; + struct per_cpu_zonestat __percpu *pcp = zone->per_cpu_zonestats; s8 __percpu *p = pcp->vm_stat_diff + item; long o, n, t, z; @@ -781,19 +781,22 @@ static int refresh_cpu_vm_stats(bool do_ int changes = 0; for_each_populated_zone(zone) { - struct per_cpu_pageset __percpu *p = zone->pageset; + struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; +#ifdef CONFIG_NUMA + struct per_cpu_pages __percpu *pcp = zone->per_cpu_pageset; +#endif for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { int v; - v = this_cpu_xchg(p->vm_stat_diff[i], 0); + v = this_cpu_xchg(pzstats->vm_stat_diff[i], 0); if (v) { atomic_long_add(v, &zone->vm_stat[i]); global_zone_diff[i] += v; #ifdef CONFIG_NUMA /* 3 seconds idle till flush */ - __this_cpu_write(p->expire, 3); + __this_cpu_write(pcp->expire, 3); #endif } } @@ -801,12 +804,12 @@ static int refresh_cpu_vm_stats(bool do_ for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) { int v; - v = this_cpu_xchg(p->vm_numa_stat_diff[i], 0); + v = this_cpu_xchg(pzstats->vm_numa_stat_diff[i], 0); if (v) { atomic_long_add(v, &zone->vm_numa_stat[i]); global_numa_diff[i] += v; - __this_cpu_write(p->expire, 3); + __this_cpu_write(pcp->expire, 3); } } @@ -819,23 +822,23 @@ static int refresh_cpu_vm_stats(bool do_ * Check if there are pages remaining in this pageset * if not then there is nothing to expire. */ - if (!__this_cpu_read(p->expire) || - !__this_cpu_read(p->pcp.count)) + if (!__this_cpu_read(pcp->expire) || + !__this_cpu_read(pcp->count)) continue; /* * We never drain zones local to this processor. */ if (zone_to_nid(zone) == numa_node_id()) { - __this_cpu_write(p->expire, 0); + __this_cpu_write(pcp->expire, 0); continue; } - if (__this_cpu_dec_return(p->expire)) + if (__this_cpu_dec_return(pcp->expire)) continue; - if (__this_cpu_read(p->pcp.count)) { - drain_zone_pages(zone, this_cpu_ptr(&p->pcp)); + if (__this_cpu_read(pcp->count)) { + drain_zone_pages(zone, this_cpu_ptr(pcp)); changes++; } } @@ -882,27 +885,27 @@ void cpu_vm_stats_fold(int cpu) int global_node_diff[NR_VM_NODE_STAT_ITEMS] = { 0, }; for_each_populated_zone(zone) { - struct per_cpu_pageset *p; + struct per_cpu_zonestat *pzstats; - p = per_cpu_ptr(zone->pageset, cpu); + pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) - if (p->vm_stat_diff[i]) { + if (pzstats->vm_stat_diff[i]) { int v; - v = p->vm_stat_diff[i]; - p->vm_stat_diff[i] = 0; + v = pzstats->vm_stat_diff[i]; + pzstats->vm_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_stat[i]); global_zone_diff[i] += v; } #ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - if (p->vm_numa_stat_diff[i]) { + if (pzstats->vm_numa_stat_diff[i]) { int v; - v = p->vm_numa_stat_diff[i]; - p->vm_numa_stat_diff[i] = 0; + v = pzstats->vm_numa_stat_diff[i]; + pzstats->vm_numa_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_numa_stat[i]); global_numa_diff[i] += v; } @@ -936,24 +939,24 @@ void cpu_vm_stats_fold(int cpu) * this is only called if !populated_zone(zone), which implies no other users of * pset->vm_stat_diff[] exist. */ -void drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset) +void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *pzstats) { int i; for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) - if (pset->vm_stat_diff[i]) { - int v = pset->vm_stat_diff[i]; - pset->vm_stat_diff[i] = 0; + if (pzstats->vm_stat_diff[i]) { + int v = pzstats->vm_stat_diff[i]; + pzstats->vm_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_stat[i]); atomic_long_add(v, &vm_zone_stat[i]); } #ifdef CONFIG_NUMA for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - if (pset->vm_numa_stat_diff[i]) { - int v = pset->vm_numa_stat_diff[i]; + if (pzstats->vm_numa_stat_diff[i]) { + int v = pzstats->vm_numa_stat_diff[i]; - pset->vm_numa_stat_diff[i] = 0; + pzstats->vm_numa_stat_diff[i] = 0; atomic_long_add(v, &zone->vm_numa_stat[i]); atomic_long_add(v, &vm_numa_stat[i]); } @@ -965,8 +968,8 @@ void drain_zonestat(struct zone *zone, s void __inc_numa_state(struct zone *zone, enum numa_stat_item item) { - struct per_cpu_pageset __percpu *pcp = zone->pageset; - u16 __percpu *p = pcp->vm_numa_stat_diff + item; + struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; + u16 __percpu *p = pzstats->vm_numa_stat_diff + item; u16 v; v = __this_cpu_inc_return(*p); @@ -1693,21 +1696,23 @@ static void zoneinfo_show_print(struct s seq_printf(m, "\n pagesets"); for_each_online_cpu(i) { - struct per_cpu_pageset *pageset; + struct per_cpu_pages *pcp; + struct per_cpu_zonestat __maybe_unused *pzstats; - pageset = per_cpu_ptr(zone->pageset, i); + pcp = per_cpu_ptr(zone->per_cpu_pageset, i); seq_printf(m, "\n cpu: %i" "\n count: %i" "\n high: %i" "\n batch: %i", i, - pageset->pcp.count, - pageset->pcp.high, - pageset->pcp.batch); + pcp->count, + pcp->high, + pcp->batch); #ifdef CONFIG_SMP + pzstats = per_cpu_ptr(zone->per_cpu_zonestats, i); seq_printf(m, "\n vm stats threshold: %d", - pageset->stat_threshold); + pzstats->stat_threshold); #endif } seq_printf(m, @@ -1927,17 +1932,18 @@ static bool need_update(int cpu) struct zone *zone; for_each_populated_zone(zone) { - struct per_cpu_pageset *p = per_cpu_ptr(zone->pageset, cpu); + struct per_cpu_zonestat *pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); struct per_cpu_nodestat *n; + /* * The fast way of checking if there are any vmstat diffs. */ - if (memchr_inv(p->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * - sizeof(p->vm_stat_diff[0]))) + if (memchr_inv(pzstats->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * + sizeof(pzstats->vm_stat_diff[0]))) return true; #ifdef CONFIG_NUMA - if (memchr_inv(p->vm_numa_stat_diff, 0, NR_VM_NUMA_STAT_ITEMS * - sizeof(p->vm_numa_stat_diff[0]))) + if (memchr_inv(pzstats->vm_numa_stat_diff, 0, NR_VM_NUMA_STAT_ITEMS * + sizeof(pzstats->vm_numa_stat_diff[0]))) return true; #endif if (last_pgdat == zone->zone_pgdat) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 161/192] mm/page_alloc: convert per-cpu list protection to local_lock 2021-06-29 2:32 incoming Andrew Morton ` (159 preceding siblings ...) 2021-06-29 2:41 ` [patch 160/192] mm/page_alloc: split per cpu page lists and zone stats Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 162/192] mm/vmstat: convert NUMA statistics to basic NUMA counters Andrew Morton ` (30 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: convert per-cpu list protection to local_lock There is a lack of clarity of what exactly local_irq_save/local_irq_restore protects in page_alloc.c . It conflates the protection of per-cpu page allocation structures with per-cpu vmstat deltas. This patch protects the PCP structure using local_lock which for most configurations is identical to IRQ enabling/disabling. The scope of the lock is still wider than it should be but this is decreased later. It is possible for the local_lock to be embedded safely within struct per_cpu_pages but it adds complexity to free_unref_page_list. [akpm@linux-foundation.org: coding style fixes] [mgorman@techsingularity.net: work around a pahole limitation with zero-sized struct pagesets] Link: https://lkml.kernel.org/r/20210526080741.GW30378@techsingularity.net [lkp@intel.com: Make pagesets static] Link: https://lkml.kernel.org/r/20210512095458.30632-3-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 2 + lib/Kconfig.debug | 3 + mm/page_alloc.c | 61 +++++++++++++++++++++++++++++---------- 3 files changed, 51 insertions(+), 15 deletions(-) --- a/include/linux/mmzone.h~mm-page_alloc-convert-per-cpu-list-protection-to-local_lock +++ a/include/linux/mmzone.h @@ -20,6 +20,7 @@ #include <linux/atomic.h> #include <linux/mm_types.h> #include <linux/page-flags.h> +#include <linux/local_lock.h> #include <asm/page.h> /* Free memory management - zoned buddy allocator. */ @@ -337,6 +338,7 @@ enum zone_watermarks { #define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost) #define wmark_pages(z, i) (z->_watermark[i] + z->watermark_boost) +/* Fields and list protected by pagesets local_lock in page_alloc.c */ struct per_cpu_pages { int count; /* number of pages in the list */ int high; /* high watermark, emptying needed */ --- a/lib/Kconfig.debug~mm-page_alloc-convert-per-cpu-list-protection-to-local_lock +++ a/lib/Kconfig.debug @@ -313,6 +313,9 @@ config DEBUG_INFO_BTF config PAHOLE_HAS_SPLIT_BTF def_bool $(success, test `$(PAHOLE) --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'` -ge "119") +config PAHOLE_HAS_ZEROSIZE_PERCPU_SUPPORT + def_bool $(success, test `$(PAHOLE) --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/'` -ge "122") + config DEBUG_INFO_BTF_MODULES def_bool y depends on DEBUG_INFO_BTF && MODULES && PAHOLE_HAS_SPLIT_BTF --- a/mm/page_alloc.c~mm-page_alloc-convert-per-cpu-list-protection-to-local_lock +++ a/mm/page_alloc.c @@ -122,6 +122,24 @@ typedef int __bitwise fpi_t; static DEFINE_MUTEX(pcp_batch_high_lock); #define MIN_PERCPU_PAGELIST_FRACTION (8) +struct pagesets { + local_lock_t lock; +#if defined(CONFIG_DEBUG_INFO_BTF) && \ + !defined(CONFIG_DEBUG_LOCK_ALLOC) && \ + !defined(CONFIG_PAHOLE_HAS_ZEROSIZE_PERCPU_SUPPORT) + /* + * pahole 1.21 and earlier gets confused by zero-sized per-CPU + * variables and produces invalid BTF. Ensure that + * sizeof(struct pagesets) != 0 for older versions of pahole. + */ + char __pahole_hack; + #warning "pahole too old to support zero-sized struct pagesets" +#endif +}; +static DEFINE_PER_CPU(struct pagesets, pagesets) = { + .lock = INIT_LOCAL_LOCK(lock), +}; + #ifdef CONFIG_USE_PERCPU_NUMA_NODE_ID DEFINE_PER_CPU(int, numa_node); EXPORT_PER_CPU_SYMBOL(numa_node); @@ -1453,6 +1471,10 @@ static void free_pcppages_bulk(struct zo } while (--count && --batch_free && !list_empty(list)); } + /* + * local_lock_irq held so equivalent to spin_lock_irqsave for + * both PREEMPT_RT and non-PREEMPT_RT configurations. + */ spin_lock(&zone->lock); isolated_pageblocks = has_isolate_pageblock(zone); @@ -1573,6 +1595,11 @@ static void __free_pages_ok(struct page return; migratetype = get_pfnblock_migratetype(page, pfn); + + /* + * TODO FIX: Disable IRQs before acquiring IRQ-safe zone->lock + * and protect vmstat updates. + */ local_irq_save(flags); __count_vm_events(PGFREE, 1 << order); free_one_page(page_zone(page), page, pfn, order, migratetype, @@ -2955,6 +2982,10 @@ static int rmqueue_bulk(struct zone *zon { int i, allocated = 0; + /* + * local_lock_irq held so equivalent to spin_lock_irqsave for + * both PREEMPT_RT and non-PREEMPT_RT configurations. + */ spin_lock(&zone->lock); for (i = 0; i < count; ++i) { struct page *page = __rmqueue(zone, order, migratetype, @@ -3007,12 +3038,12 @@ void drain_zone_pages(struct zone *zone, unsigned long flags; int to_drain, batch; - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); batch = READ_ONCE(pcp->batch); to_drain = min(pcp->count, batch); if (to_drain > 0) free_pcppages_bulk(zone, to_drain, pcp); - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); } #endif @@ -3028,13 +3059,13 @@ static void drain_pages_zone(unsigned in unsigned long flags; struct per_cpu_pages *pcp; - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); pcp = per_cpu_ptr(zone->per_cpu_pageset, cpu); if (pcp->count) free_pcppages_bulk(zone, pcp->count, pcp); - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); } /* @@ -3297,9 +3328,9 @@ void free_unref_page(struct page *page) if (!free_unref_page_prepare(page, pfn)) return; - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); free_unref_page_commit(page, pfn); - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); } /* @@ -3319,7 +3350,7 @@ void free_unref_page_list(struct list_he set_page_private(page, pfn); } - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); list_for_each_entry_safe(page, next, list, lru) { unsigned long pfn = page_private(page); @@ -3332,12 +3363,12 @@ void free_unref_page_list(struct list_he * a large list of pages to free. */ if (++batch_count == SWAP_CLUSTER_MAX) { - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); batch_count = 0; - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); } } - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); } /* @@ -3494,7 +3525,7 @@ static struct page *rmqueue_pcplist(stru struct page *page; unsigned long flags; - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); pcp = this_cpu_ptr(zone->per_cpu_pageset); list = &pcp->lists[migratetype]; page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); @@ -3502,7 +3533,7 @@ static struct page *rmqueue_pcplist(stru __count_zid_vm_events(PGALLOC, page_zonenum(page), 1); zone_statistics(preferred_zone, zone); } - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); return page; } @@ -5103,7 +5134,7 @@ unsigned long __alloc_pages_bulk(gfp_t g goto failed; /* Attempt the batch allocation */ - local_irq_save(flags); + local_lock_irqsave(&pagesets.lock, flags); pcp = this_cpu_ptr(zone->per_cpu_pageset); pcp_list = &pcp->lists[ac.migratetype]; @@ -5141,12 +5172,12 @@ unsigned long __alloc_pages_bulk(gfp_t g nr_populated++; } - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); return nr_populated; failed_irq: - local_irq_restore(flags); + local_unlock_irqrestore(&pagesets.lock, flags); failed: page = __alloc_pages(gfp, 0, preferred_nid, nodemask); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 162/192] mm/vmstat: convert NUMA statistics to basic NUMA counters 2021-06-29 2:32 incoming Andrew Morton ` (160 preceding siblings ...) 2021-06-29 2:41 ` [patch 161/192] mm/page_alloc: convert per-cpu list protection to local_lock Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 163/192] mm/vmstat: inline NUMA event counter updates Andrew Morton ` (29 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/vmstat: convert NUMA statistics to basic NUMA counters NUMA statistics are maintained on the zone level for hits, misses, foreign etc but nothing relies on them being perfectly accurate for functional correctness. The counters are used by userspace to get a general overview of a workloads NUMA behaviour but the page allocator incurs a high cost to maintain perfect accuracy similar to what is required for a vmstat like NR_FREE_PAGES. There even is a sysctl vm.numa_stat to allow userspace to turn off the collection of NUMA statistics like NUMA_HIT. This patch converts NUMA_HIT and friends to be NUMA events with similar accuracy to VM events. There is a possibility that slight errors will be introduced but the overall trend as seen by userspace will be similar. The counters are no longer updated from vmstat_refresh context as it is unnecessary overhead for counters that may never be read by userspace. Note that counters could be maintained at the node level to save space but it would have a user-visible impact due to /proc/zoneinfo. [lkp@intel.com: Fix misplaced closing brace for !CONFIG_NUMA] Link: https://lkml.kernel.org/r/20210512095458.30632-4-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- drivers/base/node.c | 18 ++-- include/linux/mmzone.h | 13 ++ include/linux/vmstat.h | 43 ++++----- mm/mempolicy.c | 2 mm/page_alloc.c | 12 +- mm/vmstat.c | 175 +++++++++++++++------------------------ 6 files changed, 114 insertions(+), 149 deletions(-) --- a/drivers/base/node.c~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/drivers/base/node.c @@ -482,6 +482,7 @@ static DEVICE_ATTR(meminfo, 0444, node_r static ssize_t node_read_numastat(struct device *dev, struct device_attribute *attr, char *buf) { + fold_vm_numa_events(); return sysfs_emit(buf, "numa_hit %lu\n" "numa_miss %lu\n" @@ -489,12 +490,12 @@ static ssize_t node_read_numastat(struct "interleave_hit %lu\n" "local_node %lu\n" "other_node %lu\n", - sum_zone_numa_state(dev->id, NUMA_HIT), - sum_zone_numa_state(dev->id, NUMA_MISS), - sum_zone_numa_state(dev->id, NUMA_FOREIGN), - sum_zone_numa_state(dev->id, NUMA_INTERLEAVE_HIT), - sum_zone_numa_state(dev->id, NUMA_LOCAL), - sum_zone_numa_state(dev->id, NUMA_OTHER)); + sum_zone_numa_event_state(dev->id, NUMA_HIT), + sum_zone_numa_event_state(dev->id, NUMA_MISS), + sum_zone_numa_event_state(dev->id, NUMA_FOREIGN), + sum_zone_numa_event_state(dev->id, NUMA_INTERLEAVE_HIT), + sum_zone_numa_event_state(dev->id, NUMA_LOCAL), + sum_zone_numa_event_state(dev->id, NUMA_OTHER)); } static DEVICE_ATTR(numastat, 0444, node_read_numastat, NULL); @@ -512,10 +513,11 @@ static ssize_t node_read_vmstat(struct d sum_zone_node_page_state(nid, i)); #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) + fold_vm_numa_events(); + for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) len += sysfs_emit_at(buf, len, "%s %lu\n", numa_stat_name(i), - sum_zone_numa_state(nid, i)); + sum_zone_numa_event_state(nid, i)); #endif for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { --- a/include/linux/mmzone.h~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/include/linux/mmzone.h @@ -135,10 +135,10 @@ enum numa_stat_item { NUMA_INTERLEAVE_HIT, /* interleaver preferred this zone */ NUMA_LOCAL, /* allocation from local node */ NUMA_OTHER, /* allocation from other node */ - NR_VM_NUMA_STAT_ITEMS + NR_VM_NUMA_EVENT_ITEMS }; #else -#define NR_VM_NUMA_STAT_ITEMS 0 +#define NR_VM_NUMA_EVENT_ITEMS 0 #endif enum zone_stat_item { @@ -357,7 +357,12 @@ struct per_cpu_zonestat { s8 stat_threshold; #endif #ifdef CONFIG_NUMA - u16 vm_numa_stat_diff[NR_VM_NUMA_STAT_ITEMS]; + /* + * Low priority inaccurate counters that are only folded + * on demand. Use a large type to avoid the overhead of + * folding during refresh_cpu_vm_stats. + */ + unsigned long vm_numa_event[NR_VM_NUMA_EVENT_ITEMS]; #endif }; @@ -623,7 +628,7 @@ struct zone { ZONE_PADDING(_pad3_) /* Zone statistics */ atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS]; - atomic_long_t vm_numa_stat[NR_VM_NUMA_STAT_ITEMS]; + atomic_long_t vm_numa_event[NR_VM_NUMA_EVENT_ITEMS]; } ____cacheline_internodealigned_in_smp; enum pgdat_flags { --- a/include/linux/vmstat.h~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/include/linux/vmstat.h @@ -138,34 +138,27 @@ static inline void vm_events_fold_cpu(in * Zone and node-based page accounting with per cpu differentials. */ extern atomic_long_t vm_zone_stat[NR_VM_ZONE_STAT_ITEMS]; -extern atomic_long_t vm_numa_stat[NR_VM_NUMA_STAT_ITEMS]; extern atomic_long_t vm_node_stat[NR_VM_NODE_STAT_ITEMS]; +extern atomic_long_t vm_numa_event[NR_VM_NUMA_EVENT_ITEMS]; #ifdef CONFIG_NUMA -static inline void zone_numa_state_add(long x, struct zone *zone, - enum numa_stat_item item) +static inline void zone_numa_event_add(long x, struct zone *zone, + enum numa_stat_item item) { - atomic_long_add(x, &zone->vm_numa_stat[item]); - atomic_long_add(x, &vm_numa_stat[item]); + atomic_long_add(x, &zone->vm_numa_event[item]); + atomic_long_add(x, &vm_numa_event[item]); } -static inline unsigned long global_numa_state(enum numa_stat_item item) +static inline unsigned long zone_numa_event_state(struct zone *zone, + enum numa_stat_item item) { - long x = atomic_long_read(&vm_numa_stat[item]); - - return x; + return atomic_long_read(&zone->vm_numa_event[item]); } -static inline unsigned long zone_numa_state_snapshot(struct zone *zone, - enum numa_stat_item item) +static inline unsigned long +global_numa_event_state(enum numa_stat_item item) { - long x = atomic_long_read(&zone->vm_numa_stat[item]); - int cpu; - - for_each_online_cpu(cpu) - x += per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_stat_diff[item]; - - return x; + return atomic_long_read(&vm_numa_event[item]); } #endif /* CONFIG_NUMA */ @@ -245,18 +238,22 @@ static inline unsigned long zone_page_st } #ifdef CONFIG_NUMA -extern void __inc_numa_state(struct zone *zone, enum numa_stat_item item); +extern void __count_numa_event(struct zone *zone, enum numa_stat_item item); extern unsigned long sum_zone_node_page_state(int node, enum zone_stat_item item); -extern unsigned long sum_zone_numa_state(int node, enum numa_stat_item item); +extern unsigned long sum_zone_numa_event_state(int node, enum numa_stat_item item); extern unsigned long node_page_state(struct pglist_data *pgdat, enum node_stat_item item); extern unsigned long node_page_state_pages(struct pglist_data *pgdat, enum node_stat_item item); +extern void fold_vm_numa_events(void); #else #define sum_zone_node_page_state(node, item) global_zone_page_state(item) #define node_page_state(node, item) global_node_page_state(item) #define node_page_state_pages(node, item) global_node_page_state_pages(item) +static inline void fold_vm_numa_events(void) +{ +} #endif /* CONFIG_NUMA */ #ifdef CONFIG_SMP @@ -428,7 +425,7 @@ static inline const char *numa_stat_name static inline const char *node_stat_name(enum node_stat_item item) { return vmstat_text[NR_VM_ZONE_STAT_ITEMS + - NR_VM_NUMA_STAT_ITEMS + + NR_VM_NUMA_EVENT_ITEMS + item]; } @@ -440,7 +437,7 @@ static inline const char *lru_list_name( static inline const char *writeback_stat_name(enum writeback_stat_item item) { return vmstat_text[NR_VM_ZONE_STAT_ITEMS + - NR_VM_NUMA_STAT_ITEMS + + NR_VM_NUMA_EVENT_ITEMS + NR_VM_NODE_STAT_ITEMS + item]; } @@ -449,7 +446,7 @@ static inline const char *writeback_stat static inline const char *vm_event_name(enum vm_event_item item) { return vmstat_text[NR_VM_ZONE_STAT_ITEMS + - NR_VM_NUMA_STAT_ITEMS + + NR_VM_NUMA_EVENT_ITEMS + NR_VM_NODE_STAT_ITEMS + NR_VM_WRITEBACK_STAT_ITEMS + item]; --- a/mm/mempolicy.c~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/mm/mempolicy.c @@ -2150,7 +2150,7 @@ static struct page *alloc_page_interleav return page; if (page && page_to_nid(page) == nid) { preempt_disable(); - __inc_numa_state(page_zone(page), NUMA_INTERLEAVE_HIT); + __count_numa_event(page_zone(page), NUMA_INTERLEAVE_HIT); preempt_enable(); } return page; --- a/mm/page_alloc.c~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/mm/page_alloc.c @@ -3480,12 +3480,12 @@ static inline void zone_statistics(struc local_stat = NUMA_OTHER; if (zone_to_nid(z) == zone_to_nid(preferred_zone)) - __inc_numa_state(z, NUMA_HIT); + __count_numa_event(z, NUMA_HIT); else { - __inc_numa_state(z, NUMA_MISS); - __inc_numa_state(preferred_zone, NUMA_FOREIGN); + __count_numa_event(z, NUMA_MISS); + __count_numa_event(preferred_zone, NUMA_FOREIGN); } - __inc_numa_state(z, local_stat); + __count_numa_event(z, local_stat); #endif } @@ -6785,8 +6785,8 @@ void __init setup_per_cpu_pageset(void) */ for_each_possible_cpu(cpu) { struct per_cpu_zonestat *pzstats = &per_cpu(boot_zonestats, cpu); - memset(pzstats->vm_numa_stat_diff, 0, - sizeof(pzstats->vm_numa_stat_diff)); + memset(pzstats->vm_numa_event, 0, + sizeof(pzstats->vm_numa_event)); } #endif --- a/mm/vmstat.c~mm-vmstat-convert-numa-statistics-to-basic-numa-counters +++ a/mm/vmstat.c @@ -31,8 +31,6 @@ #include "internal.h" -#define NUMA_STATS_THRESHOLD (U16_MAX - 2) - #ifdef CONFIG_NUMA int sysctl_vm_numa_stat = ENABLE_NUMA_STAT; @@ -41,11 +39,12 @@ static void zero_zone_numa_counters(stru { int item, cpu; - for (item = 0; item < NR_VM_NUMA_STAT_ITEMS; item++) { - atomic_long_set(&zone->vm_numa_stat[item], 0); - for_each_online_cpu(cpu) - per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_stat_diff[item] + for (item = 0; item < NR_VM_NUMA_EVENT_ITEMS; item++) { + atomic_long_set(&zone->vm_numa_event[item], 0); + for_each_online_cpu(cpu) { + per_cpu_ptr(zone->per_cpu_zonestats, cpu)->vm_numa_event[item] = 0; + } } } @@ -63,8 +62,8 @@ static void zero_global_numa_counters(vo { int item; - for (item = 0; item < NR_VM_NUMA_STAT_ITEMS; item++) - atomic_long_set(&vm_numa_stat[item], 0); + for (item = 0; item < NR_VM_NUMA_EVENT_ITEMS; item++) + atomic_long_set(&vm_numa_event[item], 0); } static void invalid_numa_statistics(void) @@ -161,10 +160,9 @@ void vm_events_fold_cpu(int cpu) * vm_stat contains the global counters */ atomic_long_t vm_zone_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp; -atomic_long_t vm_numa_stat[NR_VM_NUMA_STAT_ITEMS] __cacheline_aligned_in_smp; atomic_long_t vm_node_stat[NR_VM_NODE_STAT_ITEMS] __cacheline_aligned_in_smp; +atomic_long_t vm_numa_event[NR_VM_NUMA_EVENT_ITEMS] __cacheline_aligned_in_smp; EXPORT_SYMBOL(vm_zone_stat); -EXPORT_SYMBOL(vm_numa_stat); EXPORT_SYMBOL(vm_node_stat); #ifdef CONFIG_SMP @@ -706,8 +704,7 @@ EXPORT_SYMBOL(dec_node_page_state); * Fold a differential into the global counters. * Returns the number of counters updated. */ -#ifdef CONFIG_NUMA -static int fold_diff(int *zone_diff, int *numa_diff, int *node_diff) +static int fold_diff(int *zone_diff, int *node_diff) { int i; int changes = 0; @@ -718,12 +715,6 @@ static int fold_diff(int *zone_diff, int changes++; } - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - if (numa_diff[i]) { - atomic_long_add(numa_diff[i], &vm_numa_stat[i]); - changes++; - } - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) if (node_diff[i]) { atomic_long_add(node_diff[i], &vm_node_stat[i]); @@ -731,26 +722,34 @@ static int fold_diff(int *zone_diff, int } return changes; } -#else -static int fold_diff(int *zone_diff, int *node_diff) + +#ifdef CONFIG_NUMA +static void fold_vm_zone_numa_events(struct zone *zone) { - int i; - int changes = 0; + unsigned long zone_numa_events[NR_VM_NUMA_EVENT_ITEMS] = { 0, }; + int cpu; + enum numa_stat_item item; - for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) - if (zone_diff[i]) { - atomic_long_add(zone_diff[i], &vm_zone_stat[i]); - changes++; - } + for_each_online_cpu(cpu) { + struct per_cpu_zonestat *pzstats; - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) - if (node_diff[i]) { - atomic_long_add(node_diff[i], &vm_node_stat[i]); - changes++; + pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); + for (item = 0; item < NR_VM_NUMA_EVENT_ITEMS; item++) + zone_numa_events[item] += xchg(&pzstats->vm_numa_event[item], 0); } - return changes; + + for (item = 0; item < NR_VM_NUMA_EVENT_ITEMS; item++) + zone_numa_event_add(zone_numa_events[item], zone, item); } -#endif /* CONFIG_NUMA */ + +void fold_vm_numa_events(void) +{ + struct zone *zone; + + for_each_populated_zone(zone) + fold_vm_zone_numa_events(zone); +} +#endif /* * Update the zone counters for the current cpu. @@ -774,9 +773,6 @@ static int refresh_cpu_vm_stats(bool do_ struct zone *zone; int i; int global_zone_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, }; -#ifdef CONFIG_NUMA - int global_numa_diff[NR_VM_NUMA_STAT_ITEMS] = { 0, }; -#endif int global_node_diff[NR_VM_NODE_STAT_ITEMS] = { 0, }; int changes = 0; @@ -801,17 +797,6 @@ static int refresh_cpu_vm_stats(bool do_ } } #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) { - int v; - - v = this_cpu_xchg(pzstats->vm_numa_stat_diff[i], 0); - if (v) { - - atomic_long_add(v, &zone->vm_numa_stat[i]); - global_numa_diff[i] += v; - __this_cpu_write(pcp->expire, 3); - } - } if (do_pagesets) { cond_resched(); @@ -859,12 +844,7 @@ static int refresh_cpu_vm_stats(bool do_ } } -#ifdef CONFIG_NUMA - changes += fold_diff(global_zone_diff, global_numa_diff, - global_node_diff); -#else changes += fold_diff(global_zone_diff, global_node_diff); -#endif return changes; } @@ -879,9 +859,6 @@ void cpu_vm_stats_fold(int cpu) struct zone *zone; int i; int global_zone_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, }; -#ifdef CONFIG_NUMA - int global_numa_diff[NR_VM_NUMA_STAT_ITEMS] = { 0, }; -#endif int global_node_diff[NR_VM_NODE_STAT_ITEMS] = { 0, }; for_each_populated_zone(zone) { @@ -889,7 +866,7 @@ void cpu_vm_stats_fold(int cpu) pzstats = per_cpu_ptr(zone->per_cpu_zonestats, cpu); - for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) + for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { if (pzstats->vm_stat_diff[i]) { int v; @@ -898,17 +875,17 @@ void cpu_vm_stats_fold(int cpu) atomic_long_add(v, &zone->vm_stat[i]); global_zone_diff[i] += v; } - + } #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - if (pzstats->vm_numa_stat_diff[i]) { - int v; - - v = pzstats->vm_numa_stat_diff[i]; - pzstats->vm_numa_stat_diff[i] = 0; - atomic_long_add(v, &zone->vm_numa_stat[i]); - global_numa_diff[i] += v; + for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) { + if (pzstats->vm_numa_event[i]) { + unsigned long v; + + v = pzstats->vm_numa_event[i]; + pzstats->vm_numa_event[i] = 0; + zone_numa_event_add(v, zone, i); } + } #endif } @@ -928,11 +905,7 @@ void cpu_vm_stats_fold(int cpu) } } -#ifdef CONFIG_NUMA - fold_diff(global_zone_diff, global_numa_diff, global_node_diff); -#else fold_diff(global_zone_diff, global_node_diff); -#endif } /* @@ -941,43 +914,37 @@ void cpu_vm_stats_fold(int cpu) */ void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *pzstats) { + unsigned long v; int i; - for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) + for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++) { if (pzstats->vm_stat_diff[i]) { - int v = pzstats->vm_stat_diff[i]; + v = pzstats->vm_stat_diff[i]; pzstats->vm_stat_diff[i] = 0; - atomic_long_add(v, &zone->vm_stat[i]); - atomic_long_add(v, &vm_zone_stat[i]); + zone_page_state_add(v, zone, i); } + } #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - if (pzstats->vm_numa_stat_diff[i]) { - int v = pzstats->vm_numa_stat_diff[i]; - - pzstats->vm_numa_stat_diff[i] = 0; - atomic_long_add(v, &zone->vm_numa_stat[i]); - atomic_long_add(v, &vm_numa_stat[i]); + for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) { + if (pzstats->vm_numa_event[i]) { + v = pzstats->vm_numa_event[i]; + pzstats->vm_numa_event[i] = 0; + zone_numa_event_add(v, zone, i); } + } #endif } #endif #ifdef CONFIG_NUMA -void __inc_numa_state(struct zone *zone, +/* See __count_vm_event comment on why raw_cpu_inc is used. */ +void __count_numa_event(struct zone *zone, enum numa_stat_item item) { struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; - u16 __percpu *p = pzstats->vm_numa_stat_diff + item; - u16 v; - - v = __this_cpu_inc_return(*p); - if (unlikely(v > NUMA_STATS_THRESHOLD)) { - zone_numa_state_add(v, zone, item); - __this_cpu_write(*p, 0); - } + raw_cpu_inc(pzstats->vm_numa_event[item]); } /* @@ -998,19 +965,16 @@ unsigned long sum_zone_node_page_state(i return count; } -/* - * Determine the per node value of a numa stat item. To avoid deviation, - * the per cpu stat number in vm_numa_stat_diff[] is also included. - */ -unsigned long sum_zone_numa_state(int node, +/* Determine the per node value of a numa stat item. */ +unsigned long sum_zone_numa_event_state(int node, enum numa_stat_item item) { struct zone *zones = NODE_DATA(node)->node_zones; - int i; unsigned long count = 0; + int i; for (i = 0; i < MAX_NR_ZONES; i++) - count += zone_numa_state_snapshot(zones + i, item); + count += zone_numa_event_state(zones + i, item); return count; } @@ -1689,9 +1653,9 @@ static void zoneinfo_show_print(struct s zone_page_state(zone, i)); #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) + for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) seq_printf(m, "\n %-12s %lu", numa_stat_name(i), - zone_numa_state_snapshot(zone, i)); + zone_numa_event_state(zone, i)); #endif seq_printf(m, "\n pagesets"); @@ -1745,7 +1709,7 @@ static const struct seq_operations zonei }; #define NR_VMSTAT_ITEMS (NR_VM_ZONE_STAT_ITEMS + \ - NR_VM_NUMA_STAT_ITEMS + \ + NR_VM_NUMA_EVENT_ITEMS + \ NR_VM_NODE_STAT_ITEMS + \ NR_VM_WRITEBACK_STAT_ITEMS + \ (IS_ENABLED(CONFIG_VM_EVENT_COUNTERS) ? \ @@ -1760,6 +1724,7 @@ static void *vmstat_start(struct seq_fil return NULL; BUILD_BUG_ON(ARRAY_SIZE(vmstat_text) < NR_VMSTAT_ITEMS); + fold_vm_numa_events(); v = kmalloc_array(NR_VMSTAT_ITEMS, sizeof(unsigned long), GFP_KERNEL); m->private = v; if (!v) @@ -1769,9 +1734,9 @@ static void *vmstat_start(struct seq_fil v += NR_VM_ZONE_STAT_ITEMS; #ifdef CONFIG_NUMA - for (i = 0; i < NR_VM_NUMA_STAT_ITEMS; i++) - v[i] = global_numa_state(i); - v += NR_VM_NUMA_STAT_ITEMS; + for (i = 0; i < NR_VM_NUMA_EVENT_ITEMS; i++) + v[i] = global_numa_event_state(i); + v += NR_VM_NUMA_EVENT_ITEMS; #endif for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { @@ -1941,11 +1906,7 @@ static bool need_update(int cpu) if (memchr_inv(pzstats->vm_stat_diff, 0, NR_VM_ZONE_STAT_ITEMS * sizeof(pzstats->vm_stat_diff[0]))) return true; -#ifdef CONFIG_NUMA - if (memchr_inv(pzstats->vm_numa_stat_diff, 0, NR_VM_NUMA_STAT_ITEMS * - sizeof(pzstats->vm_numa_stat_diff[0]))) - return true; -#endif + if (last_pgdat == zone->zone_pgdat) continue; last_pgdat = zone->zone_pgdat; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 163/192] mm/vmstat: inline NUMA event counter updates 2021-06-29 2:32 incoming Andrew Morton ` (161 preceding siblings ...) 2021-06-29 2:41 ` [patch 162/192] mm/vmstat: convert NUMA statistics to basic NUMA counters Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 164/192] mm/page_alloc: batch the accounting updates in the bulk allocator Andrew Morton ` (28 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/vmstat: inline NUMA event counter updates __count_numa_event is small enough to be treated similarly to __count_vm_event so inline it. Link: https://lkml.kernel.org/r/20210512095458.30632-5-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/vmstat.h | 10 +++++++++- mm/vmstat.c | 9 --------- 2 files changed, 9 insertions(+), 10 deletions(-) --- a/include/linux/vmstat.h~mm-vmstat-inline-numa-event-counter-updates +++ a/include/linux/vmstat.h @@ -238,7 +238,15 @@ static inline unsigned long zone_page_st } #ifdef CONFIG_NUMA -extern void __count_numa_event(struct zone *zone, enum numa_stat_item item); +/* See __count_vm_event comment on why raw_cpu_inc is used. */ +static inline void +__count_numa_event(struct zone *zone, enum numa_stat_item item) +{ + struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; + + raw_cpu_inc(pzstats->vm_numa_event[item]); +} + extern unsigned long sum_zone_node_page_state(int node, enum zone_stat_item item); extern unsigned long sum_zone_numa_event_state(int node, enum numa_stat_item item); --- a/mm/vmstat.c~mm-vmstat-inline-numa-event-counter-updates +++ a/mm/vmstat.c @@ -938,15 +938,6 @@ void drain_zonestat(struct zone *zone, s #endif #ifdef CONFIG_NUMA -/* See __count_vm_event comment on why raw_cpu_inc is used. */ -void __count_numa_event(struct zone *zone, - enum numa_stat_item item) -{ - struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; - - raw_cpu_inc(pzstats->vm_numa_event[item]); -} - /* * Determine the per node value of a stat item. This function * is called frequently in a NUMA machine, so try to be as _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 164/192] mm/page_alloc: batch the accounting updates in the bulk allocator 2021-06-29 2:32 incoming Andrew Morton ` (162 preceding siblings ...) 2021-06-29 2:41 ` [patch 163/192] mm/vmstat: inline NUMA event counter updates Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 165/192] mm/page_alloc: reduce duration that IRQs are disabled for VM counters Andrew Morton ` (27 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: batch the accounting updates in the bulk allocator Now that the zone_statistics are simple counters that do not require special protection, the bulk allocator accounting updates can be batch updated without adding too much complexity with protected RMW updates or using xchg. Link: https://lkml.kernel.org/r/20210512095458.30632-6-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/vmstat.h | 8 ++++++++ mm/page_alloc.c | 30 +++++++++++++----------------- 2 files changed, 21 insertions(+), 17 deletions(-) --- a/include/linux/vmstat.h~mm-page_alloc-batch-the-accounting-updates-in-the-bulk-allocator +++ a/include/linux/vmstat.h @@ -247,6 +247,14 @@ __count_numa_event(struct zone *zone, en raw_cpu_inc(pzstats->vm_numa_event[item]); } +static inline void +__count_numa_events(struct zone *zone, enum numa_stat_item item, long delta) +{ + struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats; + + raw_cpu_add(pzstats->vm_numa_event[item], delta); +} + extern unsigned long sum_zone_node_page_state(int node, enum zone_stat_item item); extern unsigned long sum_zone_numa_event_state(int node, enum numa_stat_item item); --- a/mm/page_alloc.c~mm-page_alloc-batch-the-accounting-updates-in-the-bulk-allocator +++ a/mm/page_alloc.c @@ -3467,7 +3467,8 @@ void __putback_isolated_page(struct page * * Must be called with interrupts disabled. */ -static inline void zone_statistics(struct zone *preferred_zone, struct zone *z) +static inline void zone_statistics(struct zone *preferred_zone, struct zone *z, + long nr_account) { #ifdef CONFIG_NUMA enum numa_stat_item local_stat = NUMA_LOCAL; @@ -3480,12 +3481,12 @@ static inline void zone_statistics(struc local_stat = NUMA_OTHER; if (zone_to_nid(z) == zone_to_nid(preferred_zone)) - __count_numa_event(z, NUMA_HIT); + __count_numa_events(z, NUMA_HIT, nr_account); else { - __count_numa_event(z, NUMA_MISS); - __count_numa_event(preferred_zone, NUMA_FOREIGN); + __count_numa_events(z, NUMA_MISS, nr_account); + __count_numa_events(preferred_zone, NUMA_FOREIGN, nr_account); } - __count_numa_event(z, local_stat); + __count_numa_events(z, local_stat, nr_account); #endif } @@ -3531,7 +3532,7 @@ static struct page *rmqueue_pcplist(stru page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); if (page) { __count_zid_vm_events(PGALLOC, page_zonenum(page), 1); - zone_statistics(preferred_zone, zone); + zone_statistics(preferred_zone, zone, 1); } local_unlock_irqrestore(&pagesets.lock, flags); return page; @@ -3592,7 +3593,7 @@ struct page *rmqueue(struct zone *prefer get_pcppage_migratetype(page)); __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order); - zone_statistics(preferred_zone, zone); + zone_statistics(preferred_zone, zone, 1); local_irq_restore(flags); out: @@ -5077,7 +5078,7 @@ unsigned long __alloc_pages_bulk(gfp_t g struct alloc_context ac; gfp_t alloc_gfp; unsigned int alloc_flags = ALLOC_WMARK_LOW; - int nr_populated = 0; + int nr_populated = 0, nr_account = 0; if (unlikely(nr_pages <= 0)) return 0; @@ -5154,15 +5155,7 @@ unsigned long __alloc_pages_bulk(gfp_t g goto failed_irq; break; } - - /* - * Ideally this would be batched but the best way to do - * that cheaply is to first convert zone_statistics to - * be inaccurate per-cpu counter like vm_events to avoid - * a RMW cycle then do the accounting with IRQs enabled. - */ - __count_zid_vm_events(PGALLOC, zone_idx(zone), 1); - zone_statistics(ac.preferred_zoneref->zone, zone); + nr_account++; prep_new_page(page, 0, gfp, 0); if (page_list) @@ -5172,6 +5165,9 @@ unsigned long __alloc_pages_bulk(gfp_t g nr_populated++; } + __count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account); + zone_statistics(ac.preferred_zoneref->zone, zone, nr_account); + local_unlock_irqrestore(&pagesets.lock, flags); return nr_populated; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 165/192] mm/page_alloc: reduce duration that IRQs are disabled for VM counters 2021-06-29 2:32 incoming Andrew Morton ` (163 preceding siblings ...) 2021-06-29 2:41 ` [patch 164/192] mm/page_alloc: batch the accounting updates in the bulk allocator Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:41 ` [patch 166/192] mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok Andrew Morton ` (26 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: reduce duration that IRQs are disabled for VM counters IRQs are left disabled for the zone and node VM event counters. This is unnecessary as the affected counters are allowed to race for preemmption and IRQs. This patch reduces the scope of IRQs being disabled via local_[lock|unlock]_irq on !PREEMPT_RT kernels. One __mod_zone_freepage_state is still called with IRQs disabled. While this could be moved out, it's not free on all architectures as some require IRQs to be disabled for mod_zone_page_state on !PREEMPT_RT kernels. Link: https://lkml.kernel.org/r/20210512095458.30632-7-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-reduce-duration-that-irqs-are-disabled-for-vm-counters +++ a/mm/page_alloc.c @@ -3530,11 +3530,11 @@ static struct page *rmqueue_pcplist(stru pcp = this_cpu_ptr(zone->per_cpu_pageset); list = &pcp->lists[migratetype]; page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); + local_unlock_irqrestore(&pagesets.lock, flags); if (page) { __count_zid_vm_events(PGALLOC, page_zonenum(page), 1); zone_statistics(preferred_zone, zone, 1); } - local_unlock_irqrestore(&pagesets.lock, flags); return page; } @@ -3586,15 +3586,15 @@ struct page *rmqueue(struct zone *prefer if (!page) page = __rmqueue(zone, order, migratetype, alloc_flags); } while (page && check_new_pages(page, order)); - spin_unlock(&zone->lock); if (!page) goto failed; + __mod_zone_freepage_state(zone, -(1 << order), get_pcppage_migratetype(page)); + spin_unlock_irqrestore(&zone->lock, flags); __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order); zone_statistics(preferred_zone, zone, 1); - local_irq_restore(flags); out: /* Separate test+clear to avoid unnecessary atomics */ @@ -3607,7 +3607,7 @@ out: return page; failed: - local_irq_restore(flags); + spin_unlock_irqrestore(&zone->lock, flags); return NULL; } @@ -5165,11 +5165,11 @@ unsigned long __alloc_pages_bulk(gfp_t g nr_populated++; } + local_unlock_irqrestore(&pagesets.lock, flags); + __count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account); zone_statistics(ac.preferred_zoneref->zone, zone, nr_account); - local_unlock_irqrestore(&pagesets.lock, flags); - return nr_populated; failed_irq: _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 166/192] mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok 2021-06-29 2:32 incoming Andrew Morton ` (164 preceding siblings ...) 2021-06-29 2:41 ` [patch 165/192] mm/page_alloc: reduce duration that IRQs are disabled for VM counters Andrew Morton @ 2021-06-29 2:41 ` Andrew Morton 2021-06-29 2:42 ` [patch 167/192] mm/page_alloc: avoid conflating IRQs disabled with zone->lock Andrew Morton ` (25 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:41 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok __free_pages_ok() disables IRQs before calling a common helper free_one_page() that acquires the zone lock. This is not safe according to Documentation/locking/locktypes.rst and in this context, IRQ disabling is not protecting a per_cpu_pages structure either or a local_lock would be used. This patch explicitly acquires the lock with spin_lock_irqsave instead of relying on a helper. This removes the last instance of local_irq_save() in page_alloc.c. Link: https://lkml.kernel.org/r/20210512095458.30632-8-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-explicitly-acquire-the-zone-lock-in-__free_pages_ok +++ a/mm/page_alloc.c @@ -1590,21 +1590,21 @@ static void __free_pages_ok(struct page unsigned long flags; int migratetype; unsigned long pfn = page_to_pfn(page); + struct zone *zone = page_zone(page); if (!free_pages_prepare(page, order, true, fpi_flags)) return; migratetype = get_pfnblock_migratetype(page, pfn); - /* - * TODO FIX: Disable IRQs before acquiring IRQ-safe zone->lock - * and protect vmstat updates. - */ - local_irq_save(flags); + spin_lock_irqsave(&zone->lock, flags); __count_vm_events(PGFREE, 1 << order); - free_one_page(page_zone(page), page, pfn, order, migratetype, - fpi_flags); - local_irq_restore(flags); + if (unlikely(has_isolate_pageblock(zone) || + is_migrate_isolate(migratetype))) { + migratetype = get_pfnblock_migratetype(page, pfn); + } + __free_one_page(page, pfn, zone, order, migratetype, fpi_flags); + spin_unlock_irqrestore(&zone->lock, flags); } void __free_pages_core(struct page *page, unsigned int order) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 167/192] mm/page_alloc: avoid conflating IRQs disabled with zone->lock 2021-06-29 2:32 incoming Andrew Morton ` (165 preceding siblings ...) 2021-06-29 2:41 ` [patch 166/192] mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 168/192] mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok Andrew Morton ` (24 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: avoid conflating IRQs disabled with zone->lock Historically when freeing pages, free_one_page() assumed that callers had IRQs disabled and the zone->lock could be acquired with spin_lock(). This confuses the scope of what local_lock_irq is protecting and what zone->lock is protecting in free_unref_page_list in particular. This patch uses spin_lock_irqsave() for the zone->lock in free_one_page() instead of relying on callers to have disabled IRQs. free_unref_page_commit() is changed to only deal with PCP pages protected by the local lock. free_unref_page_list() then first frees isolated pages to the buddy lists with free_one_page() and frees the rest of the pages to the PCP via free_unref_page_commit(). The end result is that free_one_page() is no longer depending on side-effects of local_lock to be correct. Note that this may incur a performance penalty while memory hot-remove is running but that is not a common operation. [lkp@intel.com: Ensure CMA pages get addded to correct pcp list] Link: https://lkml.kernel.org/r/20210512095458.30632-9-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 75 ++++++++++++++++++++++++++++++---------------- 1 file changed, 49 insertions(+), 26 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-avoid-conflating-irqs-disabled-with-zone-lock +++ a/mm/page_alloc.c @@ -1501,13 +1501,15 @@ static void free_one_page(struct zone *z unsigned int order, int migratetype, fpi_t fpi_flags) { - spin_lock(&zone->lock); + unsigned long flags; + + spin_lock_irqsave(&zone->lock, flags); if (unlikely(has_isolate_pageblock(zone) || is_migrate_isolate(migratetype))) { migratetype = get_pfnblock_migratetype(page, pfn); } __free_one_page(page, pfn, zone, order, migratetype, fpi_flags); - spin_unlock(&zone->lock); + spin_unlock_irqrestore(&zone->lock, flags); } static void __meminit __init_single_page(struct page *page, unsigned long pfn, @@ -3285,31 +3287,13 @@ static bool free_unref_page_prepare(stru return true; } -static void free_unref_page_commit(struct page *page, unsigned long pfn) +static void free_unref_page_commit(struct page *page, unsigned long pfn, + int migratetype) { struct zone *zone = page_zone(page); struct per_cpu_pages *pcp; - int migratetype; - migratetype = get_pcppage_migratetype(page); __count_vm_event(PGFREE); - - /* - * We only track unmovable, reclaimable and movable on pcp lists. - * Free ISOLATE pages back to the allocator because they are being - * offlined but treat HIGHATOMIC as movable pages so we can get those - * areas back if necessary. Otherwise, we may have to free - * excessively into the page allocator - */ - if (migratetype >= MIGRATE_PCPTYPES) { - if (unlikely(is_migrate_isolate(migratetype))) { - free_one_page(zone, page, pfn, 0, migratetype, - FPI_NONE); - return; - } - migratetype = MIGRATE_MOVABLE; - } - pcp = this_cpu_ptr(zone->per_cpu_pageset); list_add(&page->lru, &pcp->lists[migratetype]); pcp->count++; @@ -3324,12 +3308,29 @@ void free_unref_page(struct page *page) { unsigned long flags; unsigned long pfn = page_to_pfn(page); + int migratetype; if (!free_unref_page_prepare(page, pfn)) return; + /* + * We only track unmovable, reclaimable and movable on pcp lists. + * Place ISOLATE pages on the isolated list because they are being + * offlined but treat HIGHATOMIC as movable pages so we can get those + * areas back if necessary. Otherwise, we may have to free + * excessively into the page allocator + */ + migratetype = get_pcppage_migratetype(page); + if (unlikely(migratetype >= MIGRATE_PCPTYPES)) { + if (unlikely(is_migrate_isolate(migratetype))) { + free_one_page(page_zone(page), page, pfn, 0, migratetype, FPI_NONE); + return; + } + migratetype = MIGRATE_MOVABLE; + } + local_lock_irqsave(&pagesets.lock, flags); - free_unref_page_commit(page, pfn); + free_unref_page_commit(page, pfn, migratetype); local_unlock_irqrestore(&pagesets.lock, flags); } @@ -3341,22 +3342,44 @@ void free_unref_page_list(struct list_he struct page *page, *next; unsigned long flags, pfn; int batch_count = 0; + int migratetype; /* Prepare pages for freeing */ list_for_each_entry_safe(page, next, list, lru) { pfn = page_to_pfn(page); if (!free_unref_page_prepare(page, pfn)) list_del(&page->lru); + + /* + * Free isolated pages directly to the allocator, see + * comment in free_unref_page. + */ + migratetype = get_pcppage_migratetype(page); + if (unlikely(migratetype >= MIGRATE_PCPTYPES)) { + if (unlikely(is_migrate_isolate(migratetype))) { + list_del(&page->lru); + free_one_page(page_zone(page), page, pfn, 0, + migratetype, FPI_NONE); + continue; + } + + /* + * Non-isolated types over MIGRATE_PCPTYPES get added + * to the MIGRATE_MOVABLE pcp list. + */ + set_pcppage_migratetype(page, MIGRATE_MOVABLE); + } + set_page_private(page, pfn); } local_lock_irqsave(&pagesets.lock, flags); list_for_each_entry_safe(page, next, list, lru) { - unsigned long pfn = page_private(page); - + pfn = page_private(page); set_page_private(page, 0); + migratetype = get_pcppage_migratetype(page); trace_mm_page_free_batched(page); - free_unref_page_commit(page, pfn); + free_unref_page_commit(page, pfn, migratetype); /* * Guard against excessive IRQ disabled times when we get _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 168/192] mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok 2021-06-29 2:32 incoming Andrew Morton ` (166 preceding siblings ...) 2021-06-29 2:42 ` [patch 167/192] mm/page_alloc: avoid conflating IRQs disabled with zone->lock Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 169/192] mm: page_alloc: dump migrate-failed pages only at -EBUSY Andrew Morton ` (23 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, bigeasy, brouer, chuck.lever, linux-mm, mgorman, mhocko, mingo, mm-commits, peterz, tglx, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok VM events do not need explicit protection by disabling IRQs so update the counter with IRQs enabled in __free_pages_ok. Link: https://lkml.kernel.org/r/20210512095458.30632-10-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/page_alloc.c~mm-page_alloc-update-pgfree-outside-the-zone-lock-in-__free_pages_ok +++ a/mm/page_alloc.c @@ -1600,13 +1600,14 @@ static void __free_pages_ok(struct page migratetype = get_pfnblock_migratetype(page, pfn); spin_lock_irqsave(&zone->lock, flags); - __count_vm_events(PGFREE, 1 << order); if (unlikely(has_isolate_pageblock(zone) || is_migrate_isolate(migratetype))) { migratetype = get_pfnblock_migratetype(page, pfn); } __free_one_page(page, pfn, zone, order, migratetype, fpi_flags); spin_unlock_irqrestore(&zone->lock, flags); + + __count_vm_events(PGFREE, 1 << order); } void __free_pages_core(struct page *page, unsigned int order) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 169/192] mm: page_alloc: dump migrate-failed pages only at -EBUSY 2021-06-29 2:32 incoming Andrew Morton ` (167 preceding siblings ...) 2021-06-29 2:42 ` [patch 168/192] mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 170/192] mm/page_alloc: delete vm.percpu_pagelist_fraction Andrew Morton ` (22 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, david, joaodias, linux-mm, mhocko, minchan, mm-commits, surenb, torvalds From: Minchan Kim <minchan@kernel.org> Subject: mm: page_alloc: dump migrate-failed pages only at -EBUSY alloc_contig_dump_pages() aims for helping debugging page migration failure by elevated page refcount compared to expected_count. (for the detail, please look at migrate_page_move_mapping) However, -ENOMEM is just the case that system is under memory pressure state, not relevant with page refcount at all. Thus, the dumping page list is not helpful for the debugging point of view. Link: https://lkml.kernel.org/r/YKa2Wyo9xqIErpfa@google.com Signed-off-by: Minchan Kim <minchan@kernel.org> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: John Dias <joaodias@google.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/page_alloc.c~mm-page_alloc-dump-migrate-failed-pages-only-at-ebusy +++ a/mm/page_alloc.c @@ -8800,7 +8800,8 @@ static int __alloc_contig_migrate_range( lru_cache_enable(); if (ret < 0) { - alloc_contig_dump_pages(&cc->migratepages); + if (ret == -EBUSY) + alloc_contig_dump_pages(&cc->migratepages); putback_movable_pages(&cc->migratepages); return ret; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 170/192] mm/page_alloc: delete vm.percpu_pagelist_fraction 2021-06-29 2:32 incoming Andrew Morton ` (168 preceding siblings ...) 2021-06-29 2:42 ` [patch 169/192] mm: page_alloc: dump migrate-failed pages only at -EBUSY Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 171/192] mm/page_alloc: disassociate the pcp->high from pcp->batch Andrew Morton ` (21 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: delete vm.percpu_pagelist_fraction Patch series "Calculate pcp->high based on zone sizes and active CPUs", v2. The per-cpu page allocator (PCP) is meant to reduce contention on the zone lock but the sizing of batch and high is archaic and neither takes the zone size into account or the number of CPUs local to a zone. With larger zones and more CPUs per node, the contention is getting worse. Furthermore, the fact that vm.percpu_pagelist_fraction adjusts both batch and high values means that the sysctl can reduce zone lock contention but also increase allocation latencies. This series disassociates pcp->high from pcp->batch and then scales pcp->high based on the size of the local zone with limited impact to reclaim and accounting for active CPUs but leaves pcp->batch static. It also adapts the number of pages that can be on the pcp list based on recent freeing patterns. The motivation is partially to adjust to larger memory sizes but is also driven by the fact that large batches of page freeing via release_pages() often shows zone contention as a major part of the problem. Another is a bug report based on an older kernel where a multi-terabyte process can takes several minutes to exit. A workaround was to use vm.percpu_pagelist_fraction to increase the pcp->high value but testing indicated that a production workload could not use the same values because of an increase in allocation latencies. Unfortunately, I cannot reproduce this test case myself as the multi-terabyte machines are in active use but it should alleviate the problem. The series aims to address both and partially acts as a pre-requisite. pcp only works with order-0 which is useless for SLUB (when using high orders) and THP (unconditionally). To store high-order pages on PCP, the pcp->high values need to be increased first. This patch (of 6): The vm.percpu_pagelist_fraction is used to increase the batch and high limits for the per-cpu page allocator (PCP). The intent behind the sysctl is to reduce zone lock acquisition when allocating/freeing pages but it has a problem. While it can decrease contention, it can also increase latency on the allocation side due to unreasonably large batch sizes. This leads to games where an administrator adjusts percpu_pagelist_fraction on the fly to work around contention and allocation latency problems. This series aims to alleviate the problems with zone lock contention while avoiding the allocation-side latency problems. For the purposes of review, it's easier to remove this sysctl now and reintroduce a similar sysctl later in the series that deals only with pcp->high. Link: https://lkml.kernel.org/r/20210525080119.5455-1-mgorman@techsingularity.net Link: https://lkml.kernel.org/r/20210525080119.5455-2-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/sysctl/vm.rst | 19 ------- include/linux/mmzone.h | 3 - kernel/sysctl.c | 8 --- mm/page_alloc.c | 55 +--------------------- 4 files changed, 4 insertions(+), 81 deletions(-) --- a/Documentation/admin-guide/sysctl/vm.rst~mm-page_alloc-delete-vmpercpu_pagelist_fraction +++ a/Documentation/admin-guide/sysctl/vm.rst @@ -64,7 +64,6 @@ Currently, these files are in /proc/sys/ - overcommit_ratio - page-cluster - panic_on_oom -- percpu_pagelist_fraction - stat_interval - stat_refresh - numa_stat @@ -790,24 +789,6 @@ panic_on_oom=2+kdump gives you very stro why oom happens. You can get snapshot. -percpu_pagelist_fraction -======================== - -This is the fraction of pages at most (high mark pcp->high) in each zone that -are allocated for each per cpu page list. The min value for this is 8. It -means that we don't allow more than 1/8th of pages in each zone to be -allocated in any single per_cpu_pagelist. This entry only changes the value -of hot per cpu pagelists. User can specify a number like 100 to allocate -1/100th of each zone to each per cpu page list. - -The batch value of each per cpu pagelist is also updated as a result. It is -set to pcp->high/4. The upper limit of batch is (PAGE_SHIFT * 8) - -The initial value is zero. Kernel does not use this value at boot time to set -the high water marks for each per cpu page list. If the user writes '0' to this -sysctl, it will revert to this default behavior. - - stat_interval ============= --- a/include/linux/mmzone.h~mm-page_alloc-delete-vmpercpu_pagelist_fraction +++ a/include/linux/mmzone.h @@ -1027,15 +1027,12 @@ int watermark_scale_factor_sysctl_handle extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES]; int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); -int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *, int, - void *, size_t *, loff_t *); int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int numa_zonelist_order_handler(struct ctl_table *, int, void *, size_t *, loff_t *); -extern int percpu_pagelist_fraction; extern char numa_zonelist_order[]; #define NUMA_ZONELIST_ORDER_LEN 16 --- a/kernel/sysctl.c~mm-page_alloc-delete-vmpercpu_pagelist_fraction +++ a/kernel/sysctl.c @@ -2909,14 +2909,6 @@ static struct ctl_table vm_table[] = { .extra2 = &one_thousand, }, { - .procname = "percpu_pagelist_fraction", - .data = &percpu_pagelist_fraction, - .maxlen = sizeof(percpu_pagelist_fraction), - .mode = 0644, - .proc_handler = percpu_pagelist_fraction_sysctl_handler, - .extra1 = SYSCTL_ZERO, - }, - { .procname = "page_lock_unfairness", .data = &sysctl_page_lock_unfairness, .maxlen = sizeof(sysctl_page_lock_unfairness), --- a/mm/page_alloc.c~mm-page_alloc-delete-vmpercpu_pagelist_fraction +++ a/mm/page_alloc.c @@ -120,7 +120,6 @@ typedef int __bitwise fpi_t; /* prevent >1 _updater_ of zone percpu pageset ->high and ->batch fields */ static DEFINE_MUTEX(pcp_batch_high_lock); -#define MIN_PERCPU_PAGELIST_FRACTION (8) struct pagesets { local_lock_t lock; @@ -193,7 +192,6 @@ EXPORT_SYMBOL(_totalram_pages); unsigned long totalreserve_pages __read_mostly; unsigned long totalcma_pages __read_mostly; -int percpu_pagelist_fraction; gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK; DEFINE_STATIC_KEY_MAYBE(CONFIG_INIT_ON_ALLOC_DEFAULT_ON, init_on_alloc); EXPORT_SYMBOL(init_on_alloc); @@ -6735,22 +6733,15 @@ static void __zone_set_pageset_high_and_ /* * Calculate and set new high and batch values for all per-cpu pagesets of a - * zone, based on the zone's size and the percpu_pagelist_fraction sysctl. + * zone based on the zone's size. */ static void zone_set_pageset_high_and_batch(struct zone *zone) { unsigned long new_high, new_batch; - if (percpu_pagelist_fraction) { - new_high = zone_managed_pages(zone) / percpu_pagelist_fraction; - new_batch = max(1UL, new_high / 4); - if ((new_high / 4) > (PAGE_SHIFT * 8)) - new_batch = PAGE_SHIFT * 8; - } else { - new_batch = zone_batchsize(zone); - new_high = 6 * new_batch; - new_batch = max(1UL, 1 * new_batch); - } + new_batch = zone_batchsize(zone); + new_high = 6 * new_batch; + new_batch = max(1UL, 1 * new_batch); if (zone->pageset_high == new_high && zone->pageset_batch == new_batch) @@ -8413,44 +8404,6 @@ int lowmem_reserve_ratio_sysctl_handler( return 0; } -/* - * percpu_pagelist_fraction - changes the pcp->high for each zone on each - * cpu. It is the fraction of total pages in each zone that a hot per cpu - * pagelist can have before it gets flushed back to buddy allocator. - */ -int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *table, int write, - void *buffer, size_t *length, loff_t *ppos) -{ - struct zone *zone; - int old_percpu_pagelist_fraction; - int ret; - - mutex_lock(&pcp_batch_high_lock); - old_percpu_pagelist_fraction = percpu_pagelist_fraction; - - ret = proc_dointvec_minmax(table, write, buffer, length, ppos); - if (!write || ret < 0) - goto out; - - /* Sanity checking to avoid pcp imbalance */ - if (percpu_pagelist_fraction && - percpu_pagelist_fraction < MIN_PERCPU_PAGELIST_FRACTION) { - percpu_pagelist_fraction = old_percpu_pagelist_fraction; - ret = -EINVAL; - goto out; - } - - /* No change? */ - if (percpu_pagelist_fraction == old_percpu_pagelist_fraction) - goto out; - - for_each_populated_zone(zone) - zone_set_pageset_high_and_batch(zone); -out: - mutex_unlock(&pcp_batch_high_lock); - return ret; -} - #ifndef __HAVE_ARCH_RESERVED_KERNEL_PAGES /* * Returns the number of pages that arch has reserved but _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 171/192] mm/page_alloc: disassociate the pcp->high from pcp->batch 2021-06-29 2:32 incoming Andrew Morton ` (169 preceding siblings ...) 2021-06-29 2:42 ` [patch 170/192] mm/page_alloc: delete vm.percpu_pagelist_fraction Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 172/192] mm/page_alloc: adjust pcp->high after CPU hotplug events Andrew Morton ` (20 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: disassociate the pcp->high from pcp->batch The pcp high watermark is based on the batch size but there is no relationship between them other than it is convenient to use early in boot. This patch takes the first step and bases pcp->high on the zone low watermark split across the number of CPUs local to a zone while the batch size remains the same to avoid increasing allocation latencies. The intent behind the default pcp->high is "set the number of PCP pages such that if they are all full that background reclaim is not started prematurely". Note that in this patch the pcp->high values are adjusted after memory hotplug events, min_free_kbytes adjustments and watermark scale factor adjustments but not CPU hotplug events which is handled later in the series. On a test KVM instance; Before grep -E "high:|batch" /proc/zoneinfo | tail -2 high: 378 batch: 63 After grep -E "high:|batch" /proc/zoneinfo | tail -2 high: 649 batch: 63 [mgorman@techsingularity.net: fix __setup_per_zone_wmarks for parallel memory hotplug] Link: https://lkml.kernel.org/r/20210528105925.GN30378@techsingularity.net Link: https://lkml.kernel.org/r/20210525080119.5455-3-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/memory_hotplug.c | 6 ++-- mm/page_alloc.c | 62 +++++++++++++++++++++++++++++------------- 2 files changed, 47 insertions(+), 21 deletions(-) --- a/mm/memory_hotplug.c~mm-page_alloc-disassociate-the-pcp-high-from-pcp-batch +++ a/mm/memory_hotplug.c @@ -961,7 +961,6 @@ int __ref online_pages(unsigned long pfn node_states_set_node(nid, &arg); if (need_zonelists_rebuild) build_all_zonelists(NULL); - zone_pcp_update(zone); /* Basic onlining is complete, allow allocation of onlined pages. */ undo_isolate_page_range(pfn, pfn + nr_pages, MIGRATE_MOVABLE); @@ -974,6 +973,7 @@ int __ref online_pages(unsigned long pfn */ shuffle_zone(zone); + /* reinitialise watermarks and update pcp limits */ init_per_zone_wmark_min(); kswapd_run(nid); @@ -1829,13 +1829,13 @@ int __ref offline_pages(unsigned long st adjust_managed_page_count(pfn_to_page(start_pfn), -nr_pages); adjust_present_page_count(zone, -nr_pages); + /* reinitialise watermarks and update pcp limits */ init_per_zone_wmark_min(); if (!populated_zone(zone)) { zone_pcp_reset(zone); build_all_zonelists(NULL); - } else - zone_pcp_update(zone); + } node_states_clear_node(node, &arg); if (arg.status_change_nid >= 0) { --- a/mm/page_alloc.c~mm-page_alloc-disassociate-the-pcp-high-from-pcp-batch +++ a/mm/page_alloc.c @@ -2175,14 +2175,6 @@ void __init page_alloc_init_late(void) wait_for_completion(&pgdat_init_all_done_comp); /* - * The number of managed pages has changed due to the initialisation - * so the pcpu batch and high limits needs to be updated or the limits - * will be artificially small. - */ - for_each_populated_zone(zone) - zone_pcp_update(zone); - - /* * We initialized the rest of the deferred pages. Permanently disable * on-demand struct page initialization. */ @@ -6633,13 +6625,12 @@ static int zone_batchsize(struct zone *z int batch; /* - * The per-cpu-pages pools are set to around 1000th of the - * size of the zone. + * The number of pages to batch allocate is either ~0.1% + * of the zone or 1MB, whichever is smaller. The batch + * size is striking a balance between allocation latency + * and zone lock contention. */ - batch = zone_managed_pages(zone) / 1024; - /* But no more than a meg. */ - if (batch * PAGE_SIZE > 1024 * 1024) - batch = (1024 * 1024) / PAGE_SIZE; + batch = min(zone_managed_pages(zone) >> 10, (1024 * 1024) / PAGE_SIZE); batch /= 4; /* We effectively *= 4 below */ if (batch < 1) batch = 1; @@ -6676,6 +6667,34 @@ static int zone_batchsize(struct zone *z #endif } +static int zone_highsize(struct zone *zone, int batch) +{ +#ifdef CONFIG_MMU + int high; + int nr_local_cpus; + + /* + * The high value of the pcp is based on the zone low watermark + * so that if they are full then background reclaim will not be + * started prematurely. The value is split across all online CPUs + * local to the zone. Note that early in boot that CPUs may not be + * online yet. + */ + nr_local_cpus = max(1U, cpumask_weight(cpumask_of_node(zone_to_nid(zone)))); + high = low_wmark_pages(zone) / nr_local_cpus; + + /* + * Ensure high is at least batch*4. The multiple is based on the + * historical relationship between high and batch. + */ + high = max(high, batch << 2); + + return high; +#else + return 0; +#endif +} + /* * pcp->high and pcp->batch values are related and generally batch is lower * than high. They are also related to pcp->count such that count is lower @@ -6737,11 +6756,10 @@ static void __zone_set_pageset_high_and_ */ static void zone_set_pageset_high_and_batch(struct zone *zone) { - unsigned long new_high, new_batch; + int new_high, new_batch; - new_batch = zone_batchsize(zone); - new_high = 6 * new_batch; - new_batch = max(1UL, 1 * new_batch); + new_batch = max(1, zone_batchsize(zone)); + new_high = zone_highsize(zone, new_batch); if (zone->pageset_high == new_high && zone->pageset_batch == new_batch) @@ -8222,11 +8240,19 @@ static void __setup_per_zone_wmarks(void */ void setup_per_zone_wmarks(void) { + struct zone *zone; static DEFINE_SPINLOCK(lock); spin_lock(&lock); __setup_per_zone_wmarks(); spin_unlock(&lock); + + /* + * The watermark size have changed so update the pcpu batch + * and high limits or the limits may be inappropriate. + */ + for_each_zone(zone) + zone_pcp_update(zone); } /* _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 172/192] mm/page_alloc: adjust pcp->high after CPU hotplug events 2021-06-29 2:32 incoming Andrew Morton ` (170 preceding siblings ...) 2021-06-29 2:42 ` [patch 171/192] mm/page_alloc: disassociate the pcp->high from pcp->batch Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 173/192] mm/page_alloc: scale the number of pages that are batch freed Andrew Morton ` (19 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: adjust pcp->high after CPU hotplug events The PCP high watermark is based on the number of online CPUs so the watermarks must be adjusted during CPU hotplug. At the time of hot-remove, the number of online CPUs is already adjusted but during hot-add, a delta needs to be applied to update PCP to the correct value. After this patch is applied, the high watermarks are adjusted correctly. # grep high: /proc/zoneinfo | tail -1 high: 649 # echo 0 > /sys/devices/system/cpu/cpu4/online # grep high: /proc/zoneinfo | tail -1 high: 664 # echo 1 > /sys/devices/system/cpu/cpu4/online # grep high: /proc/zoneinfo | tail -1 high: 649 Link: https://lkml.kernel.org/r/20210525080119.5455-4-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/cpuhotplug.h | 2 - mm/internal.h | 2 - mm/page_alloc.c | 38 ++++++++++++++++++++++++----------- 3 files changed, 29 insertions(+), 13 deletions(-) --- a/include/linux/cpuhotplug.h~mm-page_alloc-adjust-pcp-high-after-cpu-hotplug-events +++ a/include/linux/cpuhotplug.h @@ -54,7 +54,7 @@ enum cpuhp_state { CPUHP_MM_MEMCQ_DEAD, CPUHP_PERCPU_CNT_DEAD, CPUHP_RADIX_DEAD, - CPUHP_PAGE_ALLOC_DEAD, + CPUHP_PAGE_ALLOC, CPUHP_NET_DEV_DEAD, CPUHP_PCI_XGENE_DEAD, CPUHP_IOMMU_IOVA_DEAD, --- a/mm/internal.h~mm-page_alloc-adjust-pcp-high-after-cpu-hotplug-events +++ a/mm/internal.h @@ -206,7 +206,7 @@ extern int user_min_free_kbytes; extern void free_unref_page(struct page *page); extern void free_unref_page_list(struct list_head *list); -extern void zone_pcp_update(struct zone *zone); +extern void zone_pcp_update(struct zone *zone, int cpu_online); extern void zone_pcp_reset(struct zone *zone); extern void zone_pcp_disable(struct zone *zone); extern void zone_pcp_enable(struct zone *zone); --- a/mm/page_alloc.c~mm-page_alloc-adjust-pcp-high-after-cpu-hotplug-events +++ a/mm/page_alloc.c @@ -6667,7 +6667,7 @@ static int zone_batchsize(struct zone *z #endif } -static int zone_highsize(struct zone *zone, int batch) +static int zone_highsize(struct zone *zone, int batch, int cpu_online) { #ifdef CONFIG_MMU int high; @@ -6678,9 +6678,10 @@ static int zone_highsize(struct zone *zo * so that if they are full then background reclaim will not be * started prematurely. The value is split across all online CPUs * local to the zone. Note that early in boot that CPUs may not be - * online yet. + * online yet and that during CPU hotplug that the cpumask is not + * yet updated when a CPU is being onlined. */ - nr_local_cpus = max(1U, cpumask_weight(cpumask_of_node(zone_to_nid(zone)))); + nr_local_cpus = max(1U, cpumask_weight(cpumask_of_node(zone_to_nid(zone)))) + cpu_online; high = low_wmark_pages(zone) / nr_local_cpus; /* @@ -6754,12 +6755,12 @@ static void __zone_set_pageset_high_and_ * Calculate and set new high and batch values for all per-cpu pagesets of a * zone based on the zone's size. */ -static void zone_set_pageset_high_and_batch(struct zone *zone) +static void zone_set_pageset_high_and_batch(struct zone *zone, int cpu_online) { int new_high, new_batch; new_batch = max(1, zone_batchsize(zone)); - new_high = zone_highsize(zone, new_batch); + new_high = zone_highsize(zone, new_batch, cpu_online); if (zone->pageset_high == new_high && zone->pageset_batch == new_batch) @@ -6789,7 +6790,7 @@ void __meminit setup_zone_pageset(struct per_cpu_pages_init(pcp, pzstats); } - zone_set_pageset_high_and_batch(zone); + zone_set_pageset_high_and_batch(zone, 0); } /* @@ -8044,6 +8045,7 @@ void __init set_dma_reserve(unsigned lon static int page_alloc_cpu_dead(unsigned int cpu) { + struct zone *zone; lru_add_drain_cpu(cpu); drain_pages(cpu); @@ -8064,6 +8066,19 @@ static int page_alloc_cpu_dead(unsigned * race with what we are doing. */ cpu_vm_stats_fold(cpu); + + for_each_populated_zone(zone) + zone_pcp_update(zone, 0); + + return 0; +} + +static int page_alloc_cpu_online(unsigned int cpu) +{ + struct zone *zone; + + for_each_populated_zone(zone) + zone_pcp_update(zone, 1); return 0; } @@ -8089,8 +8104,9 @@ void __init page_alloc_init(void) hashdist = 0; #endif - ret = cpuhp_setup_state_nocalls(CPUHP_PAGE_ALLOC_DEAD, - "mm/page_alloc:dead", NULL, + ret = cpuhp_setup_state_nocalls(CPUHP_PAGE_ALLOC, + "mm/page_alloc:pcp", + page_alloc_cpu_online, page_alloc_cpu_dead); WARN_ON(ret < 0); } @@ -8252,7 +8268,7 @@ void setup_per_zone_wmarks(void) * and high limits or the limits may be inappropriate. */ for_each_zone(zone) - zone_pcp_update(zone); + zone_pcp_update(zone, 0); } /* @@ -9053,10 +9069,10 @@ EXPORT_SYMBOL(free_contig_range); * The zone indicated has a new number of managed_pages; batch sizes and percpu * page high values need to be recalculated. */ -void __meminit zone_pcp_update(struct zone *zone) +void zone_pcp_update(struct zone *zone, int cpu_online) { mutex_lock(&pcp_batch_high_lock); - zone_set_pageset_high_and_batch(zone); + zone_set_pageset_high_and_batch(zone, cpu_online); mutex_unlock(&pcp_batch_high_lock); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 173/192] mm/page_alloc: scale the number of pages that are batch freed 2021-06-29 2:32 incoming Andrew Morton ` (171 preceding siblings ...) 2021-06-29 2:42 ` [patch 172/192] mm/page_alloc: adjust pcp->high after CPU hotplug events Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 174/192] mm/page_alloc: limit the number of pages on PCP lists when reclaim is active Andrew Morton ` (18 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: scale the number of pages that are batch freed When a task is freeing a large number of order-0 pages, it may acquire the zone->lock multiple times freeing pages in batches. This may unnecessarily contend on the zone lock when freeing very large number of pages. This patch adapts the size of the batch based on the recent pattern to scale the batch size for subsequent frees. As the machines I used were not large enough to test this are not large enough to illustrate a problem, a debugging patch shows patterns like the following (slightly editted for clarity) Baseline vanilla kernel time-unmap-14426 [...] free_pcppages_bulk: free 63 count 378 high 378 time-unmap-14426 [...] free_pcppages_bulk: free 63 count 378 high 378 time-unmap-14426 [...] free_pcppages_bulk: free 63 count 378 high 378 time-unmap-14426 [...] free_pcppages_bulk: free 63 count 378 high 378 time-unmap-14426 [...] free_pcppages_bulk: free 63 count 378 high 378 With patches time-unmap-7724 [...] free_pcppages_bulk: free 126 count 814 high 814 time-unmap-7724 [...] free_pcppages_bulk: free 252 count 814 high 814 time-unmap-7724 [...] free_pcppages_bulk: free 504 count 814 high 814 time-unmap-7724 [...] free_pcppages_bulk: free 751 count 814 high 814 time-unmap-7724 [...] free_pcppages_bulk: free 751 count 814 high 814 Link: https://lkml.kernel.org/r/20210525080119.5455-5-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 3 +- mm/page_alloc.c | 41 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 41 insertions(+), 3 deletions(-) --- a/include/linux/mmzone.h~mm-page_alloc-scale-the-number-of-pages-that-are-batch-freed +++ a/include/linux/mmzone.h @@ -343,8 +343,9 @@ struct per_cpu_pages { int count; /* number of pages in the list */ int high; /* high watermark, emptying needed */ int batch; /* chunk size for buddy add/remove */ + short free_factor; /* batch scaling factor during free */ #ifdef CONFIG_NUMA - int expire; /* When 0, remote pagesets are drained */ + short expire; /* When 0, remote pagesets are drained */ #endif /* Lists of pages, one per migrate type stored on the pcp-lists */ --- a/mm/page_alloc.c~mm-page_alloc-scale-the-number-of-pages-that-are-batch-freed +++ a/mm/page_alloc.c @@ -3278,18 +3278,47 @@ static bool free_unref_page_prepare(stru return true; } +static int nr_pcp_free(struct per_cpu_pages *pcp, int high, int batch) +{ + int min_nr_free, max_nr_free; + + /* Check for PCP disabled or boot pageset */ + if (unlikely(high < batch)) + return 1; + + /* Leave at least pcp->batch pages on the list */ + min_nr_free = batch; + max_nr_free = high - batch; + + /* + * Double the number of pages freed each time there is subsequent + * freeing of pages without any allocation. + */ + batch <<= pcp->free_factor; + if (batch < max_nr_free) + pcp->free_factor++; + batch = clamp(batch, min_nr_free, max_nr_free); + + return batch; +} + static void free_unref_page_commit(struct page *page, unsigned long pfn, int migratetype) { struct zone *zone = page_zone(page); struct per_cpu_pages *pcp; + int high; __count_vm_event(PGFREE); pcp = this_cpu_ptr(zone->per_cpu_pageset); list_add(&page->lru, &pcp->lists[migratetype]); pcp->count++; - if (pcp->count >= READ_ONCE(pcp->high)) - free_pcppages_bulk(zone, READ_ONCE(pcp->batch), pcp); + high = READ_ONCE(pcp->high); + if (pcp->count >= high) { + int batch = READ_ONCE(pcp->batch); + + free_pcppages_bulk(zone, nr_pcp_free(pcp, high, batch), pcp); + } } /* @@ -3541,7 +3570,14 @@ static struct page *rmqueue_pcplist(stru unsigned long flags; local_lock_irqsave(&pagesets.lock, flags); + + /* + * On allocation, reduce the number of pages that are batch freed. + * See nr_pcp_free() where free_factor is increased for subsequent + * frees. + */ pcp = this_cpu_ptr(zone->per_cpu_pageset); + pcp->free_factor >>= 1; list = &pcp->lists[migratetype]; page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); local_unlock_irqrestore(&pagesets.lock, flags); @@ -6737,6 +6773,7 @@ static void per_cpu_pages_init(struct pe */ pcp->high = BOOT_PAGESET_HIGH; pcp->batch = BOOT_PAGESET_BATCH; + pcp->free_factor = 0; } static void __zone_set_pageset_high_and_batch(struct zone *zone, unsigned long high, _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 174/192] mm/page_alloc: limit the number of pages on PCP lists when reclaim is active 2021-06-29 2:32 incoming Andrew Morton ` (172 preceding siblings ...) 2021-06-29 2:42 ` [patch 173/192] mm/page_alloc: scale the number of pages that are batch freed Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 175/192] mm/page_alloc: introduce vm.percpu_pagelist_high_fraction Andrew Morton ` (17 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: limit the number of pages on PCP lists when reclaim is active When kswapd is active then direct reclaim is potentially active. In either case, it is possible that a zone would be balanced if pages were not trapped on PCP lists. Instead of draining remote pages, simply limit the size of the PCP lists while kswapd is active. Link: https://lkml.kernel.org/r/20210525080119.5455-6-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 1 + mm/page_alloc.c | 19 ++++++++++++++++++- mm/vmscan.c | 35 +++++++++++++++++++++++++++++++++++ 3 files changed, 54 insertions(+), 1 deletion(-) --- a/include/linux/mmzone.h~mm-page_alloc-limit-the-number-of-pages-on-pcp-lists-when-reclaim-is-active +++ a/include/linux/mmzone.h @@ -647,6 +647,7 @@ enum zone_flags { ZONE_BOOSTED_WATERMARK, /* zone recently boosted watermarks. * Cleared when kswapd is woken. */ + ZONE_RECLAIM_ACTIVE, /* kswapd may be scanning the zone. */ }; static inline unsigned long zone_managed_pages(struct zone *zone) --- a/mm/page_alloc.c~mm-page_alloc-limit-the-number-of-pages-on-pcp-lists-when-reclaim-is-active +++ a/mm/page_alloc.c @@ -3302,6 +3302,23 @@ static int nr_pcp_free(struct per_cpu_pa return batch; } +static int nr_pcp_high(struct per_cpu_pages *pcp, struct zone *zone) +{ + int high = READ_ONCE(pcp->high); + + if (unlikely(!high)) + return 0; + + if (!test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) + return high; + + /* + * If reclaim is active, limit the number of pages that can be + * stored on pcp lists + */ + return min(READ_ONCE(pcp->batch) << 2, high); +} + static void free_unref_page_commit(struct page *page, unsigned long pfn, int migratetype) { @@ -3313,7 +3330,7 @@ static void free_unref_page_commit(struc pcp = this_cpu_ptr(zone->per_cpu_pageset); list_add(&page->lru, &pcp->lists[migratetype]); pcp->count++; - high = READ_ONCE(pcp->high); + high = nr_pcp_high(pcp, zone); if (pcp->count >= high) { int batch = READ_ONCE(pcp->batch); --- a/mm/vmscan.c~mm-page_alloc-limit-the-number-of-pages-on-pcp-lists-when-reclaim-is-active +++ a/mm/vmscan.c @@ -3722,6 +3722,38 @@ static bool kswapd_shrink_node(pg_data_t return sc->nr_scanned >= sc->nr_to_reclaim; } +/* Page allocator PCP high watermark is lowered if reclaim is active. */ +static inline void +update_reclaim_active(pg_data_t *pgdat, int highest_zoneidx, bool active) +{ + int i; + struct zone *zone; + + for (i = 0; i <= highest_zoneidx; i++) { + zone = pgdat->node_zones + i; + + if (!managed_zone(zone)) + continue; + + if (active) + set_bit(ZONE_RECLAIM_ACTIVE, &zone->flags); + else + clear_bit(ZONE_RECLAIM_ACTIVE, &zone->flags); + } +} + +static inline void +set_reclaim_active(pg_data_t *pgdat, int highest_zoneidx) +{ + update_reclaim_active(pgdat, highest_zoneidx, true); +} + +static inline void +clear_reclaim_active(pg_data_t *pgdat, int highest_zoneidx) +{ + update_reclaim_active(pgdat, highest_zoneidx, false); +} + /* * For kswapd, balance_pgdat() will reclaim pages across a node from zones * that are eligible for use by the caller until at least one zone is @@ -3774,6 +3806,7 @@ static int balance_pgdat(pg_data_t *pgda boosted = nr_boost_reclaim; restart: + set_reclaim_active(pgdat, highest_zoneidx); sc.priority = DEF_PRIORITY; do { unsigned long nr_reclaimed = sc.nr_reclaimed; @@ -3907,6 +3940,8 @@ restart: pgdat->kswapd_failures++; out: + clear_reclaim_active(pgdat, highest_zoneidx); + /* If reclaim was boosted, account for the reclaim done in this pass */ if (boosted) { unsigned long flags; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 175/192] mm/page_alloc: introduce vm.percpu_pagelist_high_fraction 2021-06-29 2:32 incoming Andrew Morton ` (173 preceding siblings ...) 2021-06-29 2:42 ` [patch 174/192] mm/page_alloc: limit the number of pages on PCP lists when reclaim is active Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 176/192] mm: drop SECTION_SHIFT in code comments Andrew Morton ` (16 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, dave.hansen, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: introduce vm.percpu_pagelist_high_fraction This introduces a new sysctl vm.percpu_pagelist_high_fraction. It is similar to the old vm.percpu_pagelist_fraction. The old sysctl increased both pcp->batch and pcp->high with the higher pcp->high potentially reducing zone->lock contention. However, the higher pcp->batch value also potentially increased allocation latency while the PCP was refilled. This sysctl only adjusts pcp->high so that zone->lock contention is potentially reduced but allocation latency during a PCP refill remains the same. # grep -E "high:|batch" /proc/zoneinfo | tail -2 high: 649 batch: 63 # sysctl vm.percpu_pagelist_high_fraction=8 # grep -E "high:|batch" /proc/zoneinfo | tail -2 high: 35071 batch: 63 # sysctl vm.percpu_pagelist_high_fraction=64 high: 4383 batch: 63 # sysctl vm.percpu_pagelist_high_fraction=0 high: 649 batch: 63 [mgorman@techsingularity.net: fix documentation] Link: https://lkml.kernel.org/r/20210528151010.GQ30378@techsingularity.net Link: https://lkml.kernel.org/r/20210525080119.5455-7-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/sysctl/vm.rst | 21 ++++++ include/linux/mmzone.h | 3 kernel/sysctl.c | 8 ++ mm/page_alloc.c | 69 +++++++++++++++++++--- 4 files changed, 94 insertions(+), 7 deletions(-) --- a/Documentation/admin-guide/sysctl/vm.rst~mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction +++ a/Documentation/admin-guide/sysctl/vm.rst @@ -64,6 +64,7 @@ Currently, these files are in /proc/sys/ - overcommit_ratio - page-cluster - panic_on_oom +- percpu_pagelist_high_fraction - stat_interval - stat_refresh - numa_stat @@ -789,6 +790,26 @@ panic_on_oom=2+kdump gives you very stro why oom happens. You can get snapshot. +percpu_pagelist_high_fraction +============================= + +This is the fraction of pages in each zone that are can be stored to +per-cpu page lists. It is an upper boundary that is divided depending +on the number of online CPUs. The min value for this is 8 which means +that we do not allow more than 1/8th of pages in each zone to be stored +on per-cpu page lists. This entry only changes the value of hot per-cpu +page lists. A user can specify a number like 100 to allocate 1/100th of +each zone between per-cpu lists. + +The batch value of each per-cpu page list remains the same regardless of +the value of the high fraction so allocation latencies are unaffected. + +The initial value is zero. Kernel uses this value to set the high pcp->high +mark based on the low watermark for the zone and the number of local +online CPUs. If the user writes '0' to this sysctl, it will revert to +this default behavior. + + stat_interval ============= --- a/include/linux/mmzone.h~mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction +++ a/include/linux/mmzone.h @@ -1029,12 +1029,15 @@ int watermark_scale_factor_sysctl_handle extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES]; int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); +int percpu_pagelist_high_fraction_sysctl_handler(struct ctl_table *, int, + void *, size_t *, loff_t *); int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int numa_zonelist_order_handler(struct ctl_table *, int, void *, size_t *, loff_t *); +extern int percpu_pagelist_high_fraction; extern char numa_zonelist_order[]; #define NUMA_ZONELIST_ORDER_LEN 16 --- a/kernel/sysctl.c~mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction +++ a/kernel/sysctl.c @@ -2909,6 +2909,14 @@ static struct ctl_table vm_table[] = { .extra2 = &one_thousand, }, { + .procname = "percpu_pagelist_high_fraction", + .data = &percpu_pagelist_high_fraction, + .maxlen = sizeof(percpu_pagelist_high_fraction), + .mode = 0644, + .proc_handler = percpu_pagelist_high_fraction_sysctl_handler, + .extra1 = SYSCTL_ZERO, + }, + { .procname = "page_lock_unfairness", .data = &sysctl_page_lock_unfairness, .maxlen = sizeof(sysctl_page_lock_unfairness), --- a/mm/page_alloc.c~mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction +++ a/mm/page_alloc.c @@ -120,6 +120,7 @@ typedef int __bitwise fpi_t; /* prevent >1 _updater_ of zone percpu pageset ->high and ->batch fields */ static DEFINE_MUTEX(pcp_batch_high_lock); +#define MIN_PERCPU_PAGELIST_HIGH_FRACTION (8) struct pagesets { local_lock_t lock; @@ -192,6 +193,7 @@ EXPORT_SYMBOL(_totalram_pages); unsigned long totalreserve_pages __read_mostly; unsigned long totalcma_pages __read_mostly; +int percpu_pagelist_high_fraction; gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK; DEFINE_STATIC_KEY_MAYBE(CONFIG_INIT_ON_ALLOC_DEFAULT_ON, init_on_alloc); EXPORT_SYMBOL(init_on_alloc); @@ -6725,17 +6727,32 @@ static int zone_highsize(struct zone *zo #ifdef CONFIG_MMU int high; int nr_local_cpus; + unsigned long total_pages; + + if (!percpu_pagelist_high_fraction) { + /* + * By default, the high value of the pcp is based on the zone + * low watermark so that if they are full then background + * reclaim will not be started prematurely. + */ + total_pages = low_wmark_pages(zone); + } else { + /* + * If percpu_pagelist_high_fraction is configured, the high + * value is based on a fraction of the managed pages in the + * zone. + */ + total_pages = zone_managed_pages(zone) / percpu_pagelist_high_fraction; + } /* - * The high value of the pcp is based on the zone low watermark - * so that if they are full then background reclaim will not be - * started prematurely. The value is split across all online CPUs - * local to the zone. Note that early in boot that CPUs may not be - * online yet and that during CPU hotplug that the cpumask is not - * yet updated when a CPU is being onlined. + * Split the high value across all online CPUs local to the zone. Note + * that early in boot that CPUs may not be online yet and that during + * CPU hotplug that the cpumask is not yet updated when a CPU is being + * onlined. */ nr_local_cpus = max(1U, cpumask_weight(cpumask_of_node(zone_to_nid(zone)))) + cpu_online; - high = low_wmark_pages(zone) / nr_local_cpus; + high = total_pages / nr_local_cpus; /* * Ensure high is at least batch*4. The multiple is based on the @@ -8500,6 +8517,44 @@ int lowmem_reserve_ratio_sysctl_handler( return 0; } +/* + * percpu_pagelist_high_fraction - changes the pcp->high for each zone on each + * cpu. It is the fraction of total pages in each zone that a hot per cpu + * pagelist can have before it gets flushed back to buddy allocator. + */ +int percpu_pagelist_high_fraction_sysctl_handler(struct ctl_table *table, + int write, void *buffer, size_t *length, loff_t *ppos) +{ + struct zone *zone; + int old_percpu_pagelist_high_fraction; + int ret; + + mutex_lock(&pcp_batch_high_lock); + old_percpu_pagelist_high_fraction = percpu_pagelist_high_fraction; + + ret = proc_dointvec_minmax(table, write, buffer, length, ppos); + if (!write || ret < 0) + goto out; + + /* Sanity checking to avoid pcp imbalance */ + if (percpu_pagelist_high_fraction && + percpu_pagelist_high_fraction < MIN_PERCPU_PAGELIST_HIGH_FRACTION) { + percpu_pagelist_high_fraction = old_percpu_pagelist_high_fraction; + ret = -EINVAL; + goto out; + } + + /* No change? */ + if (percpu_pagelist_high_fraction == old_percpu_pagelist_high_fraction) + goto out; + + for_each_populated_zone(zone) + zone_set_pageset_high_and_batch(zone, 0); +out: + mutex_unlock(&pcp_batch_high_lock); + return ret; +} + #ifndef __HAVE_ARCH_RESERVED_KERNEL_PAGES /* * Returns the number of pages that arch has reserved but _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 176/192] mm: drop SECTION_SHIFT in code comments 2021-06-29 2:32 incoming Andrew Morton ` (174 preceding siblings ...) 2021-06-29 2:42 ` [patch 175/192] mm/page_alloc: introduce vm.percpu_pagelist_high_fraction Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 177/192] mm/page_alloc: improve memmap_pages dbg msg Andrew Morton ` (15 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: aisheng.dong, akpm, andreyknvl, catalin.marinas, keescook, linux-mm, mm-commits, torvalds, yuzhao From: Dong Aisheng <aisheng.dong@nxp.com> Subject: mm: drop SECTION_SHIFT in code comments Actually SECTIONS_SHIFT is used in the kernel code, so the code comments is strictly incorrect. And since commit bbeae5b05ef6 ("mm: move page flags layout to separate header"), SECTIONS_SHIFT definition has been moved to include/linux/page-flags-layout.h, since code itself looks quite straighforward, instead of moving the code comment into the new place as well, we just simply remove it. This also fixed a checkpatch complain derived from the original code: WARNING: please, no space before tabs + * SECTIONS_SHIFT ^I^I#bits space required to store a section #$ Link: https://lkml.kernel.org/r/20210531091908.1738465-2-aisheng.dong@nxp.com Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Suggested-by: Yu Zhao <yuzhao@google.com> Reviewed-by: Yu Zhao <yuzhao@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 2 -- 1 file changed, 2 deletions(-) --- a/include/linux/mmzone.h~mm-drop-section_shift-in-code-comments +++ a/include/linux/mmzone.h @@ -1200,8 +1200,6 @@ static inline struct zoneref *first_zone #ifdef CONFIG_SPARSEMEM /* - * SECTION_SHIFT #bits space required to store a section # - * * PA_SECTION_SHIFT physical address to/from section number * PFN_SECTION_SHIFT pfn to/from section number */ _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 177/192] mm/page_alloc: improve memmap_pages dbg msg 2021-06-29 2:32 incoming Andrew Morton ` (175 preceding siblings ...) 2021-06-29 2:42 ` [patch 176/192] mm: drop SECTION_SHIFT in code comments Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 178/192] mm/page_alloc: fix counting of managed_pages Andrew Morton ` (14 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: aisheng.dong, akpm, david, linux-mm, mm-commits, torvalds From: Dong Aisheng <aisheng.dong@nxp.com> Subject: mm/page_alloc: improve memmap_pages dbg msg Make debug message more accurate. Link: https://lkml.kernel.org/r/20210531091908.1738465-6-aisheng.dong@nxp.com Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/page_alloc.c~mm-page_alloc-improve-memmap_pages-dbg-msg +++ a/mm/page_alloc.c @@ -7383,7 +7383,7 @@ static void __init free_area_init_core(s pr_debug(" %s zone: %lu pages used for memmap\n", zone_names[j], memmap_pages); } else - pr_warn(" %s zone: %lu pages exceeds freesize %lu\n", + pr_warn(" %s zone: %lu memmap pages exceeds freesize %lu\n", zone_names[j], memmap_pages, freesize); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 178/192] mm/page_alloc: fix counting of managed_pages 2021-06-29 2:32 incoming Andrew Morton ` (176 preceding siblings ...) 2021-06-29 2:42 ` [patch 177/192] mm/page_alloc: improve memmap_pages dbg msg Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 179/192] mm/page_alloc: move free_the_page Andrew Morton ` (13 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, bhe, david, linux-mm, liushixin2, mm-commits, torvalds, yangerkun From: Liu Shixin <liushixin2@huawei.com> Subject: mm/page_alloc: fix counting of managed_pages commit f63661566fad ("mm/page_alloc.c: clear out zone->lowmem_reserve[] if the zone is empty") clears out zone->lowmem_reserve[] if zone is empty. But when zone is not empty and sysctl_lowmem_reserve_ratio[i] is set to zero, zone_managed_pages(zone) is not counted in the managed_pages either. This is inconsistent with the description of lowmem_reserve, so fix it. Link: https://lkml.kernel.org/r/20210527125707.3760259-1-liushixin2@huawei.com Fixes: f63661566fad ("mm/page_alloc.c: clear out zone->lowmem_reserve[] if the zone is empty") Signed-off-by: Liu Shixin <liushixin2@huawei.com> Reported-by: yangerkun <yangerkun@huawei.com> Reviewed-by: Baoquan He <bhe@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-fix-counting-of-managed_pages +++ a/mm/page_alloc.c @@ -8240,14 +8240,14 @@ static void setup_per_zone_lowmem_reserv unsigned long managed_pages = 0; for (j = i + 1; j < MAX_NR_ZONES; j++) { - if (clear) { - zone->lowmem_reserve[j] = 0; - } else { - struct zone *upper_zone = &pgdat->node_zones[j]; + struct zone *upper_zone = &pgdat->node_zones[j]; + + managed_pages += zone_managed_pages(upper_zone); - managed_pages += zone_managed_pages(upper_zone); + if (clear) + zone->lowmem_reserve[j] = 0; + else zone->lowmem_reserve[j] = managed_pages / ratio; - } } } } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 179/192] mm/page_alloc: move free_the_page 2021-06-29 2:32 incoming Andrew Morton ` (177 preceding siblings ...) 2021-06-29 2:42 ` [patch 178/192] mm/page_alloc: fix counting of managed_pages Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 180/192] alpha: remove DISCONTIGMEM and NUMA Andrew Morton ` (12 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, brouer, dave.hansen, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: move free_the_page Patch series "Allow high order pages to be stored on PCP", v2. The per-cpu page allocator (PCP) only handles order-0 pages. With the series "Use local_lock for pcp protection and reduce stat overhead" and "Calculate pcp->high based on zone sizes and active CPUs", it's now feasible to store high-order pages on PCP lists. This small series allows PCP to store "cheap" orders where cheap is determined by PAGE_ALLOC_COSTLY_ORDER and THP-sized allocations. This patch (of 2): In the next page, free_compount_page is going to use the common helper free_the_page. This patch moves the definition to ease review. No functional change. Link: https://lkml.kernel.org/r/20210603142220.10851-1-mgorman@techsingularity.net Link: https://lkml.kernel.org/r/20210603142220.10851-2-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-move-free_the_page +++ a/mm/page_alloc.c @@ -687,6 +687,14 @@ out: add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); } +static inline void free_the_page(struct page *page, unsigned int order) +{ + if (order == 0) /* Via pcp? */ + free_unref_page(page); + else + __free_pages_ok(page, order, FPI_NONE); +} + /* * Higher-order pages are called "compound pages". They are structured thusly: * @@ -5349,14 +5357,6 @@ unsigned long get_zeroed_page(gfp_t gfp_ } EXPORT_SYMBOL(get_zeroed_page); -static inline void free_the_page(struct page *page, unsigned int order) -{ - if (order == 0) /* Via pcp? */ - free_unref_page(page); - else - __free_pages_ok(page, order, FPI_NONE); -} - /** * __free_pages - Free pages allocated with alloc_pages(). * @page: The page pointer returned from alloc_pages(). _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 180/192] alpha: remove DISCONTIGMEM and NUMA 2021-06-29 2:32 incoming Andrew Morton ` (178 preceding siblings ...) 2021-06-29 2:42 ` [patch 179/192] mm/page_alloc: move free_the_page Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 181/192] arc: update comment about HIGHMEM implementation Andrew Morton ` (11 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: alpha: remove DISCONTIGMEM and NUMA Patch series "Remove DISCONTIGMEM memory model", v3. SPARSEMEM memory model was supposed to entirely replace DISCONTIGMEM a (long) while ago. The last architectures that used DISCONTIGMEM were updated to use other memory models in v5.11 and it is about the time to entirely remove DISCONTIGMEM from the kernel. This set removes DISCONTIGMEM from alpha, arc and m68k, simplifies memory model selection in mm/Kconfig and replaces usage of redundant CONFIG_NEED_MULTIPLE_NODES and CONFIG_FLAT_NODE_MEM_MAP with CONFIG_NUMA and CONFIG_FLATMEM respectively. I've also removed NUMA support on alpha that was BROKEN for more than 15 years. There were also minor updates all over arch/ to remove mentions of DISCONTIGMEM in comments and #ifdefs. This patch (of 9): NUMA is marked broken on alpha for more than 15 years and DISCONTIGMEM was replaced with SPARSEMEM in v5.11. Remove both NUMA and DISCONTIGMEM support from alpha. Link: https://lkml.kernel.org/r/20210608091316.3622-1-rppt@kernel.org Link: https://lkml.kernel.org/r/20210608091316.3622-2-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/alpha/Kconfig | 22 -- arch/alpha/include/asm/machvec.h | 6 arch/alpha/include/asm/mmzone.h | 100 ------------ arch/alpha/include/asm/pgtable.h | 4 arch/alpha/include/asm/topology.h | 39 ---- arch/alpha/kernel/core_marvel.c | 53 ------ arch/alpha/kernel/core_wildfire.c | 29 --- arch/alpha/kernel/pci_iommu.c | 29 --- arch/alpha/kernel/proto.h | 8 - arch/alpha/kernel/setup.c | 16 -- arch/alpha/kernel/sys_marvel.c | 5 arch/alpha/kernel/sys_wildfire.c | 5 arch/alpha/mm/Makefile | 2 arch/alpha/mm/init.c | 3 arch/alpha/mm/numa.c | 223 ---------------------------- 15 files changed, 4 insertions(+), 540 deletions(-) --- a/arch/alpha/include/asm/machvec.h~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/include/asm/machvec.h @@ -99,12 +99,6 @@ struct alpha_machine_vector const char *vector_name; - /* NUMA information */ - int (*pa_to_nid)(unsigned long); - int (*cpuid_to_nid)(int); - unsigned long (*node_mem_start)(int); - unsigned long (*node_mem_size)(int); - /* System specific parameters. */ union { struct { --- a/arch/alpha/include/asm/mmzone.h +++ /dev/null @@ -1,100 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99 - * Adapted for the alpha wildfire architecture Jan 2001. - */ -#ifndef _ASM_MMZONE_H_ -#define _ASM_MMZONE_H_ - -#ifdef CONFIG_DISCONTIGMEM - -#include <asm/smp.h> - -/* - * Following are macros that are specific to this numa platform. - */ - -extern pg_data_t node_data[]; - -#define alpha_pa_to_nid(pa) \ - (alpha_mv.pa_to_nid \ - ? alpha_mv.pa_to_nid(pa) \ - : (0)) -#define node_mem_start(nid) \ - (alpha_mv.node_mem_start \ - ? alpha_mv.node_mem_start(nid) \ - : (0UL)) -#define node_mem_size(nid) \ - (alpha_mv.node_mem_size \ - ? alpha_mv.node_mem_size(nid) \ - : ((nid) ? (0UL) : (~0UL))) - -#define pa_to_nid(pa) alpha_pa_to_nid(pa) -#define NODE_DATA(nid) (&node_data[(nid)]) - -#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn) - -#if 1 -#define PLAT_NODE_DATA_LOCALNR(p, n) \ - (((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn) -#else -static inline unsigned long -PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) -{ - unsigned long temp; - temp = p >> PAGE_SHIFT; - return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn; -} -#endif - -/* - * Following are macros that each numa implementation must define. - */ - -/* - * Given a kernel address, find the home node of the underlying memory. - */ -#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) - -/* - * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory - * and returns the kaddr corresponding to first physical page in the - * node's mem_map. - */ -#define LOCAL_BASE_ADDR(kaddr) \ - ((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \ - << PAGE_SHIFT)) - -/* XXX: FIXME -- nyc */ -#define kern_addr_valid(kaddr) (0) - -#define mk_pte(page, pgprot) \ -({ \ - pte_t pte; \ - unsigned long pfn; \ - \ - pfn = page_to_pfn(page) << 32; \ - pte_val(pte) = pfn | pgprot_val(pgprot); \ - \ - pte; \ -}) - -#define pte_page(x) \ -({ \ - unsigned long kvirt; \ - struct page * __xx; \ - \ - kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \ - __xx = virt_to_page(kvirt); \ - \ - __xx; \ -}) - -#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT)) -#define pfn_valid(pfn) \ - (((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \ - node_spanned_pages(pfn_to_nid(pfn))) \ - -#endif /* CONFIG_DISCONTIGMEM */ - -#endif /* _ASM_MMZONE_H_ */ --- a/arch/alpha/include/asm/pgtable.h~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/include/asm/pgtable.h @@ -206,7 +206,6 @@ extern unsigned long __zero_page(void); #define page_to_pa(page) (page_to_pfn(page) << PAGE_SHIFT) #define pte_pfn(pte) (pte_val(pte) >> 32) -#ifndef CONFIG_DISCONTIGMEM #define pte_page(pte) pfn_to_page(pte_pfn(pte)) #define mk_pte(page, pgprot) \ ({ \ @@ -215,7 +214,6 @@ extern unsigned long __zero_page(void); pte_val(pte) = (page_to_pfn(page) << 32) | pgprot_val(pgprot); \ pte; \ }) -#endif extern inline pte_t pfn_pte(unsigned long physpfn, pgprot_t pgprot) { pte_t pte; pte_val(pte) = (PHYS_TWIDDLE(physpfn) << 32) | pgprot_val(pgprot); return pte; } @@ -330,9 +328,7 @@ extern inline pte_t mk_swap_pte(unsigned #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) -#ifndef CONFIG_DISCONTIGMEM #define kern_addr_valid(addr) (1) -#endif #define pte_ERROR(e) \ printk("%s:%d: bad pte %016lx.\n", __FILE__, __LINE__, pte_val(e)) --- a/arch/alpha/include/asm/topology.h~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/include/asm/topology.h @@ -7,45 +7,6 @@ #include <linux/numa.h> #include <asm/machvec.h> -#ifdef CONFIG_NUMA -static inline int cpu_to_node(int cpu) -{ - int node; - - if (!alpha_mv.cpuid_to_nid) - return 0; - - node = alpha_mv.cpuid_to_nid(cpu); - -#ifdef DEBUG_NUMA - BUG_ON(node < 0); -#endif - - return node; -} - -extern struct cpumask node_to_cpumask_map[]; -/* FIXME: This is dumb, recalculating every time. But simple. */ -static const struct cpumask *cpumask_of_node(int node) -{ - int cpu; - - if (node == NUMA_NO_NODE) - return cpu_all_mask; - - cpumask_clear(&node_to_cpumask_map[node]); - - for_each_online_cpu(cpu) { - if (cpu_to_node(cpu) == node) - cpumask_set_cpu(cpu, node_to_cpumask_map[node]); - } - - return &node_to_cpumask_map[node]; -} - -#define cpumask_of_pcibus(bus) (cpu_online_mask) - -#endif /* !CONFIG_NUMA */ # include <asm-generic/topology.h> #endif /* _ASM_ALPHA_TOPOLOGY_H */ --- a/arch/alpha/Kconfig~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/Kconfig @@ -549,29 +549,12 @@ config NR_CPUS MARVEL support can handle a maximum of 32 CPUs, all the others with working support have a maximum of 4 CPUs. -config ARCH_DISCONTIGMEM_ENABLE - bool "Discontiguous Memory Support" - depends on BROKEN - help - Say Y to support efficient handling of discontiguous physical memory, - for architectures which are either NUMA (Non-Uniform Memory Access) - or have huge holes in the physical address space for other reasons. - See <file:Documentation/vm/numa.rst> for more. - config ARCH_SPARSEMEM_ENABLE bool "Sparse Memory Support" help Say Y to support efficient handling of discontiguous physical memory, for systems that have huge holes in the physical address space. -config NUMA - bool "NUMA Support (EXPERIMENTAL)" - depends on DISCONTIGMEM && BROKEN - help - Say Y to compile the kernel to support NUMA (Non-Uniform Memory - Access). This option is for configuring high-end multiprocessor - server machines. If in doubt, say N. - config ALPHA_WTINT bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC default y if ALPHA_QEMU @@ -596,11 +579,6 @@ config ALPHA_WTINT If unsure, say N. -config NODES_SHIFT - int - default "7" - depends on NEED_MULTIPLE_NODES - # LARGE_VMALLOC is racy, if you *really* need it then fix it first config ALPHA_LARGE_VMALLOC bool --- a/arch/alpha/kernel/core_marvel.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/core_marvel.c @@ -287,8 +287,7 @@ io7_init_hose(struct io7 *io7, int port) /* * Set up window 0 for scatter-gather 8MB at 8MB. */ - hose->sg_isa = iommu_arena_new_node(marvel_cpuid_to_nid(io7->pe), - hose, 0x00800000, 0x00800000, 0); + hose->sg_isa = iommu_arena_new_node(0, hose, 0x00800000, 0x00800000, 0); hose->sg_isa->align_entry = 8; /* cache line boundary */ csrs->POx_WBASE[0].csr = hose->sg_isa->dma_base | wbase_m_ena | wbase_m_sg; @@ -305,8 +304,7 @@ io7_init_hose(struct io7 *io7, int port) /* * Set up window 2 for scatter-gather (up-to) 1GB at 3GB. */ - hose->sg_pci = iommu_arena_new_node(marvel_cpuid_to_nid(io7->pe), - hose, 0xc0000000, 0x40000000, 0); + hose->sg_pci = iommu_arena_new_node(0, hose, 0xc0000000, 0x40000000, 0); hose->sg_pci->align_entry = 8; /* cache line boundary */ csrs->POx_WBASE[2].csr = hose->sg_pci->dma_base | wbase_m_ena | wbase_m_sg; @@ -843,53 +841,8 @@ EXPORT_SYMBOL(marvel_ioportmap); EXPORT_SYMBOL(marvel_ioread8); EXPORT_SYMBOL(marvel_iowrite8); #endif -\f -/* - * NUMA Support - */ -/********** - * FIXME - for now each cpu is a node by itself - * -- no real support for striped mode - ********** - */ -int -marvel_pa_to_nid(unsigned long pa) -{ - int cpuid; - if ((pa >> 43) & 1) /* I/O */ - cpuid = (~(pa >> 35) & 0xff); - else /* mem */ - cpuid = ((pa >> 34) & 0x3) | ((pa >> (37 - 2)) & (0x1f << 2)); - - return marvel_cpuid_to_nid(cpuid); -} - -int -marvel_cpuid_to_nid(int cpuid) -{ - return cpuid; -} - -unsigned long -marvel_node_mem_start(int nid) -{ - unsigned long pa; - - pa = (nid & 0x3) | ((nid & (0x1f << 2)) << 1); - pa <<= 34; - - return pa; -} - -unsigned long -marvel_node_mem_size(int nid) -{ - return 16UL * 1024 * 1024 * 1024; /* 16GB */ -} - -\f -/* +/* * AGP GART Support. */ #include <linux/agp_backend.h> --- a/arch/alpha/kernel/core_wildfire.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/core_wildfire.c @@ -434,39 +434,12 @@ wildfire_write_config(struct pci_bus *bu return PCIBIOS_SUCCESSFUL; } -struct pci_ops wildfire_pci_ops = +struct pci_ops wildfire_pci_ops = { .read = wildfire_read_config, .write = wildfire_write_config, }; -\f -/* - * NUMA Support - */ -int wildfire_pa_to_nid(unsigned long pa) -{ - return pa >> 36; -} - -int wildfire_cpuid_to_nid(int cpuid) -{ - /* assume 4 CPUs per node */ - return cpuid >> 2; -} - -unsigned long wildfire_node_mem_start(int nid) -{ - /* 64GB per node */ - return (unsigned long)nid * (64UL * 1024 * 1024 * 1024); -} - -unsigned long wildfire_node_mem_size(int nid) -{ - /* 64GB per node */ - return 64UL * 1024 * 1024 * 1024; -} - #if DEBUG_DUMP_REGS static void __init --- a/arch/alpha/kernel/pci_iommu.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/pci_iommu.c @@ -71,33 +71,6 @@ iommu_arena_new_node(int nid, struct pci if (align < mem_size) align = mem_size; - -#ifdef CONFIG_DISCONTIGMEM - - arena = memblock_alloc_node(sizeof(*arena), align, nid); - if (!NODE_DATA(nid) || !arena) { - printk("%s: couldn't allocate arena from node %d\n" - " falling back to system-wide allocation\n", - __func__, nid); - arena = memblock_alloc(sizeof(*arena), SMP_CACHE_BYTES); - if (!arena) - panic("%s: Failed to allocate %zu bytes\n", __func__, - sizeof(*arena)); - } - - arena->ptes = memblock_alloc_node(sizeof(*arena), align, nid); - if (!NODE_DATA(nid) || !arena->ptes) { - printk("%s: couldn't allocate arena ptes from node %d\n" - " falling back to system-wide allocation\n", - __func__, nid); - arena->ptes = memblock_alloc(mem_size, align); - if (!arena->ptes) - panic("%s: Failed to allocate %lu bytes align=0x%lx\n", - __func__, mem_size, align); - } - -#else /* CONFIG_DISCONTIGMEM */ - arena = memblock_alloc(sizeof(*arena), SMP_CACHE_BYTES); if (!arena) panic("%s: Failed to allocate %zu bytes\n", __func__, @@ -107,8 +80,6 @@ iommu_arena_new_node(int nid, struct pci panic("%s: Failed to allocate %lu bytes align=0x%lx\n", __func__, mem_size, align); -#endif /* CONFIG_DISCONTIGMEM */ - spin_lock_init(&arena->lock); arena->hose = hose; arena->dma_base = base; --- a/arch/alpha/kernel/proto.h~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/proto.h @@ -49,10 +49,6 @@ extern void marvel_init_arch(void); extern void marvel_kill_arch(int); extern void marvel_machine_check(unsigned long, unsigned long); extern void marvel_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t); -extern int marvel_pa_to_nid(unsigned long); -extern int marvel_cpuid_to_nid(int); -extern unsigned long marvel_node_mem_start(int); -extern unsigned long marvel_node_mem_size(int); extern struct _alpha_agp_info *marvel_agp_info(void); struct io7 *marvel_find_io7(int pe); struct io7 *marvel_next_io7(struct io7 *prev); @@ -101,10 +97,6 @@ extern void wildfire_init_arch(void); extern void wildfire_kill_arch(int); extern void wildfire_machine_check(unsigned long vector, unsigned long la_ptr); extern void wildfire_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t); -extern int wildfire_pa_to_nid(unsigned long); -extern int wildfire_cpuid_to_nid(int); -extern unsigned long wildfire_node_mem_start(int); -extern unsigned long wildfire_node_mem_size(int); /* console.c */ #ifdef CONFIG_VGA_HOSE --- a/arch/alpha/kernel/setup.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/setup.c @@ -79,11 +79,6 @@ int alpha_l3_cacheshape; unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; #endif -#ifdef CONFIG_NUMA -struct cpumask node_to_cpumask_map[MAX_NUMNODES] __read_mostly; -EXPORT_SYMBOL(node_to_cpumask_map); -#endif - /* Which processor we booted from. */ int boot_cpuid; @@ -305,7 +300,6 @@ move_initrd(unsigned long mem_limit) } #endif -#ifndef CONFIG_DISCONTIGMEM static void __init setup_memory(void *kernel_end) { @@ -389,9 +383,6 @@ setup_memory(void *kernel_end) } #endif /* CONFIG_BLK_DEV_INITRD */ } -#else -extern void setup_memory(void *); -#endif /* !CONFIG_DISCONTIGMEM */ int __init page_is_ram(unsigned long pfn) @@ -618,13 +609,6 @@ setup_arch(char **cmdline_p) "VERBOSE_MCHECK " #endif -#ifdef CONFIG_DISCONTIGMEM - "DISCONTIGMEM " -#ifdef CONFIG_NUMA - "NUMA " -#endif -#endif - #ifdef CONFIG_DEBUG_SPINLOCK "DEBUG_SPINLOCK " #endif --- a/arch/alpha/kernel/sys_marvel.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/sys_marvel.c @@ -461,10 +461,5 @@ struct alpha_machine_vector marvel_ev7_m .kill_arch = marvel_kill_arch, .pci_map_irq = marvel_map_irq, .pci_swizzle = common_swizzle, - - .pa_to_nid = marvel_pa_to_nid, - .cpuid_to_nid = marvel_cpuid_to_nid, - .node_mem_start = marvel_node_mem_start, - .node_mem_size = marvel_node_mem_size, }; ALIAS_MV(marvel_ev7) --- a/arch/alpha/kernel/sys_wildfire.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/kernel/sys_wildfire.c @@ -337,10 +337,5 @@ struct alpha_machine_vector wildfire_mv .kill_arch = wildfire_kill_arch, .pci_map_irq = wildfire_map_irq, .pci_swizzle = common_swizzle, - - .pa_to_nid = wildfire_pa_to_nid, - .cpuid_to_nid = wildfire_cpuid_to_nid, - .node_mem_start = wildfire_node_mem_start, - .node_mem_size = wildfire_node_mem_size, }; ALIAS_MV(wildfire) --- a/arch/alpha/mm/init.c~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/mm/init.c @@ -235,8 +235,6 @@ callback_init(void * kernel_end) return kernel_end; } - -#ifndef CONFIG_DISCONTIGMEM /* * paging_init() sets up the memory map. */ @@ -257,7 +255,6 @@ void __init paging_init(void) /* Initialize the kernel's ZERO_PGE. */ memset((void *)ZERO_PGE, 0, PAGE_SIZE); } -#endif /* CONFIG_DISCONTIGMEM */ #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM) void --- a/arch/alpha/mm/Makefile~alpha-remove-discontigmem-and-numa +++ a/arch/alpha/mm/Makefile @@ -6,5 +6,3 @@ ccflags-y := -Werror obj-y := init.o fault.o - -obj-$(CONFIG_DISCONTIGMEM) += numa.o --- a/arch/alpha/mm/numa.c +++ /dev/null @@ -1,223 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/alpha/mm/numa.c - * - * DISCONTIGMEM NUMA alpha support. - * - * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/memblock.h> -#include <linux/swap.h> -#include <linux/initrd.h> -#include <linux/pfn.h> -#include <linux/module.h> - -#include <asm/hwrpb.h> -#include <asm/sections.h> - -pg_data_t node_data[MAX_NUMNODES]; -EXPORT_SYMBOL(node_data); - -#undef DEBUG_DISCONTIG -#ifdef DEBUG_DISCONTIG -#define DBGDCONT(args...) printk(args) -#else -#define DBGDCONT(args...) -#endif - -#define for_each_mem_cluster(memdesc, _cluster, i) \ - for ((_cluster) = (memdesc)->cluster, (i) = 0; \ - (i) < (memdesc)->numclusters; (i)++, (_cluster)++) - -static void __init show_mem_layout(void) -{ - struct memclust_struct * cluster; - struct memdesc_struct * memdesc; - int i; - - /* Find free clusters, and init and free the bootmem accordingly. */ - memdesc = (struct memdesc_struct *) - (hwrpb->mddt_offset + (unsigned long) hwrpb); - - printk("Raw memory layout:\n"); - for_each_mem_cluster(memdesc, cluster, i) { - printk(" memcluster %2d, usage %1lx, start %8lu, end %8lu\n", - i, cluster->usage, cluster->start_pfn, - cluster->start_pfn + cluster->numpages); - } -} - -static void __init -setup_memory_node(int nid, void *kernel_end) -{ - extern unsigned long mem_size_limit; - struct memclust_struct * cluster; - struct memdesc_struct * memdesc; - unsigned long start_kernel_pfn, end_kernel_pfn; - unsigned long start, end; - unsigned long node_pfn_start, node_pfn_end; - unsigned long node_min_pfn, node_max_pfn; - int i; - int show_init = 0; - - /* Find the bounds of current node */ - node_pfn_start = (node_mem_start(nid)) >> PAGE_SHIFT; - node_pfn_end = node_pfn_start + (node_mem_size(nid) >> PAGE_SHIFT); - - /* Find free clusters, and init and free the bootmem accordingly. */ - memdesc = (struct memdesc_struct *) - (hwrpb->mddt_offset + (unsigned long) hwrpb); - - /* find the bounds of this node (node_min_pfn/node_max_pfn) */ - node_min_pfn = ~0UL; - node_max_pfn = 0UL; - for_each_mem_cluster(memdesc, cluster, i) { - /* Bit 0 is console/PALcode reserved. Bit 1 is - non-volatile memory -- we might want to mark - this for later. */ - if (cluster->usage & 3) - continue; - - start = cluster->start_pfn; - end = start + cluster->numpages; - - if (start >= node_pfn_end || end <= node_pfn_start) - continue; - - if (!show_init) { - show_init = 1; - printk("Initializing bootmem allocator on Node ID %d\n", nid); - } - printk(" memcluster %2d, usage %1lx, start %8lu, end %8lu\n", - i, cluster->usage, cluster->start_pfn, - cluster->start_pfn + cluster->numpages); - - if (start < node_pfn_start) - start = node_pfn_start; - if (end > node_pfn_end) - end = node_pfn_end; - - if (start < node_min_pfn) - node_min_pfn = start; - if (end > node_max_pfn) - node_max_pfn = end; - } - - if (mem_size_limit && node_max_pfn > mem_size_limit) { - static int msg_shown = 0; - if (!msg_shown) { - msg_shown = 1; - printk("setup: forcing memory size to %ldK (from %ldK).\n", - mem_size_limit << (PAGE_SHIFT - 10), - node_max_pfn << (PAGE_SHIFT - 10)); - } - node_max_pfn = mem_size_limit; - } - - if (node_min_pfn >= node_max_pfn) - return; - - /* Update global {min,max}_low_pfn from node information. */ - if (node_min_pfn < min_low_pfn) - min_low_pfn = node_min_pfn; - if (node_max_pfn > max_low_pfn) - max_pfn = max_low_pfn = node_max_pfn; - -#if 0 /* we'll try this one again in a little while */ - /* Cute trick to make sure our local node data is on local memory */ - node_data[nid] = (pg_data_t *)(__va(node_min_pfn << PAGE_SHIFT)); -#endif - printk(" Detected node memory: start %8lu, end %8lu\n", - node_min_pfn, node_max_pfn); - - DBGDCONT(" DISCONTIG: node_data[%d] is at 0x%p\n", nid, NODE_DATA(nid)); - - /* Find the bounds of kernel memory. */ - start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS); - end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end)); - - if (!nid && (node_max_pfn < end_kernel_pfn || node_min_pfn > start_kernel_pfn)) - panic("kernel loaded out of ram"); - - memblock_add_node(PFN_PHYS(node_min_pfn), - (node_max_pfn - node_min_pfn) << PAGE_SHIFT, nid); - - /* Zone start phys-addr must be 2^(MAX_ORDER-1) aligned. - Note that we round this down, not up - node memory - has much larger alignment than 8Mb, so it's safe. */ - node_min_pfn &= ~((1UL << (MAX_ORDER-1))-1); - - NODE_DATA(nid)->node_start_pfn = node_min_pfn; - NODE_DATA(nid)->node_present_pages = node_max_pfn - node_min_pfn; - - node_set_online(nid); -} - -void __init -setup_memory(void *kernel_end) -{ - unsigned long kernel_size; - int nid; - - show_mem_layout(); - - nodes_clear(node_online_map); - - min_low_pfn = ~0UL; - max_low_pfn = 0UL; - for (nid = 0; nid < MAX_NUMNODES; nid++) - setup_memory_node(nid, kernel_end); - - kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS; - memblock_reserve(KERNEL_START_PHYS, kernel_size); - -#ifdef CONFIG_BLK_DEV_INITRD - initrd_start = INITRD_START; - if (initrd_start) { - extern void *move_initrd(unsigned long); - - initrd_end = initrd_start+INITRD_SIZE; - printk("Initial ramdisk at: 0x%p (%lu bytes)\n", - (void *) initrd_start, INITRD_SIZE); - - if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) { - if (!move_initrd(PFN_PHYS(max_low_pfn))) - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%p)\ndisabling initrd\n", - initrd_end, - phys_to_virt(PFN_PHYS(max_low_pfn))); - } else { - nid = kvaddr_to_nid(initrd_start); - memblock_reserve(virt_to_phys((void *)initrd_start), - INITRD_SIZE); - } - } -#endif /* CONFIG_BLK_DEV_INITRD */ -} - -void __init paging_init(void) -{ - unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; - unsigned long dma_local_pfn; - - /* - * The old global MAX_DMA_ADDRESS per-arch API doesn't fit - * in the NUMA model, for now we convert it to a pfn and - * we interpret this pfn as a local per-node information. - * This issue isn't very important since none of these machines - * have legacy ISA slots anyways. - */ - dma_local_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; - - max_zone_pfn[ZONE_DMA] = dma_local_pfn; - max_zone_pfn[ZONE_NORMAL] = max_pfn; - - free_area_init(max_zone_pfn); - - /* Initialize the kernel's ZERO_PGE. */ - memset((void *)ZERO_PGE, 0, PAGE_SIZE); -} _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 181/192] arc: update comment about HIGHMEM implementation 2021-06-29 2:32 incoming Andrew Morton ` (179 preceding siblings ...) 2021-06-29 2:42 ` [patch 180/192] alpha: remove DISCONTIGMEM and NUMA Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 182/192] arc: remove support for DISCONTIGMEM Andrew Morton ` (10 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: arc: update comment about HIGHMEM implementation Arc does not use DISCONTIGMEM to implement high memory, update the comment describing how high memory works to reflect this. Link: https://lkml.kernel.org/r/20210608091316.3622-3-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arc/mm/init.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) --- a/arch/arc/mm/init.c~arc-update-comment-about-highmem-implementation +++ a/arch/arc/mm/init.c @@ -139,16 +139,13 @@ void __init setup_arch_memory(void) #ifdef CONFIG_HIGHMEM /* - * Populate a new node with highmem - * * On ARC (w/o PAE) HIGHMEM addresses are actually smaller (0 based) - * than addresses in normal ala low memory (0x8000_0000 based). + * than addresses in normal aka low memory (0x8000_0000 based). * Even with PAE, the huge peripheral space hole would waste a lot of - * mem with single mem_map[]. This warrants a mem_map per region design. - * Thus HIGHMEM on ARC is imlemented with DISCONTIGMEM. - * - * DISCONTIGMEM in turns requires multiple nodes. node 0 above is - * populated with normal memory zone while node 1 only has highmem + * mem with single contiguous mem_map[]. + * Thus when HIGHMEM on ARC is enabled the memory map corresponding + * to the hole is freed and ARC specific version of pfn_valid() + * handles the hole in the memory map. */ #ifdef CONFIG_DISCONTIGMEM node_set_online(1); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 182/192] arc: remove support for DISCONTIGMEM 2021-06-29 2:32 incoming Andrew Morton ` (180 preceding siblings ...) 2021-06-29 2:42 ` [patch 181/192] arc: update comment about HIGHMEM implementation Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 183/192] m68k: " Andrew Morton ` (9 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: arc: remove support for DISCONTIGMEM DISCONTIGMEM was replaced by FLATMEM with freeing of the unused memory map in v5.11. Remove the support for DISCONTIGMEM entirely. Link: https://lkml.kernel.org/r/20210608091316.3622-4-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arc/Kconfig | 13 ---------- arch/arc/include/asm/mmzone.h | 40 -------------------------------- arch/arc/mm/init.c | 8 ------ 3 files changed, 61 deletions(-) --- a/arch/arc/include/asm/mmzone.h +++ /dev/null @@ -1,40 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com) - */ - -#ifndef _ASM_ARC_MMZONE_H -#define _ASM_ARC_MMZONE_H - -#ifdef CONFIG_DISCONTIGMEM - -extern struct pglist_data node_data[]; -#define NODE_DATA(nid) (&node_data[nid]) - -static inline int pfn_to_nid(unsigned long pfn) -{ - int is_end_low = 1; - - if (IS_ENABLED(CONFIG_ARC_HAS_PAE40)) - is_end_low = pfn <= virt_to_pfn(0xFFFFFFFFUL); - - /* - * node 0: lowmem: 0x8000_0000 to 0xFFFF_FFFF - * node 1: HIGHMEM w/o PAE40: 0x0 to 0x7FFF_FFFF - * HIGHMEM with PAE40: 0x1_0000_0000 to ... - */ - if (pfn >= ARCH_PFN_OFFSET && is_end_low) - return 0; - - return 1; -} - -static inline int pfn_valid(unsigned long pfn) -{ - int nid = pfn_to_nid(pfn); - - return (pfn <= node_end_pfn(nid)); -} -#endif /* CONFIG_DISCONTIGMEM */ - -#endif --- a/arch/arc/Kconfig~arc-remove-support-for-discontigmem +++ a/arch/arc/Kconfig @@ -62,10 +62,6 @@ config SCHED_OMIT_FRAME_POINTER config GENERIC_CSUM def_bool y -config ARCH_DISCONTIGMEM_ENABLE - def_bool n - depends on BROKEN - config ARCH_FLATMEM_ENABLE def_bool y @@ -344,15 +340,6 @@ config ARC_HUGEPAGE_16M endchoice -config NODES_SHIFT - int "Maximum NUMA Nodes (as a power of 2)" - default "0" if !DISCONTIGMEM - default "1" if DISCONTIGMEM - depends on NEED_MULTIPLE_NODES - help - Accessing memory beyond 1GB (with or w/o PAE) requires 2 memory - zones. - config ARC_COMPACT_IRQ_LEVELS depends on ISA_ARCOMPACT bool "Setup Timer IRQ as high Priority" --- a/arch/arc/mm/init.c~arc-remove-support-for-discontigmem +++ a/arch/arc/mm/init.c @@ -32,11 +32,6 @@ unsigned long arch_pfn_offset; EXPORT_SYMBOL(arch_pfn_offset); #endif -#ifdef CONFIG_DISCONTIGMEM -struct pglist_data node_data[MAX_NUMNODES] __read_mostly; -EXPORT_SYMBOL(node_data); -#endif - long __init arc_get_mem_sz(void) { return low_mem_sz; @@ -147,9 +142,6 @@ void __init setup_arch_memory(void) * to the hole is freed and ARC specific version of pfn_valid() * handles the hole in the memory map. */ -#ifdef CONFIG_DISCONTIGMEM - node_set_online(1); -#endif min_high_pfn = PFN_DOWN(high_mem_start); max_high_pfn = PFN_DOWN(high_mem_start + high_mem_sz); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 183/192] m68k: remove support for DISCONTIGMEM 2021-06-29 2:32 incoming Andrew Morton ` (181 preceding siblings ...) 2021-06-29 2:42 ` [patch 182/192] arc: remove support for DISCONTIGMEM Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 184/192] mm: remove CONFIG_DISCONTIGMEM Andrew Morton ` (8 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: m68k: remove support for DISCONTIGMEM DISCONTIGMEM was replaced by FLATMEM with freeing of the unused memory map in v5.11. Remove the support for DISCONTIGMEM entirely. Link: https://lkml.kernel.org/r/20210608091316.3622-5-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/m68k/Kconfig.cpu | 10 -------- arch/m68k/include/asm/mmzone.h | 10 -------- arch/m68k/include/asm/page.h | 2 - arch/m68k/include/asm/page_mm.h | 35 ------------------------------ arch/m68k/mm/init.c | 20 ----------------- 5 files changed, 1 insertion(+), 76 deletions(-) --- a/arch/m68k/include/asm/mmzone.h +++ /dev/null @@ -1,10 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_M68K_MMZONE_H_ -#define _ASM_M68K_MMZONE_H_ - -extern pg_data_t pg_data_map[]; - -#define NODE_DATA(nid) (&pg_data_map[nid]) -#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map) - -#endif /* _ASM_M68K_MMZONE_H_ */ --- a/arch/m68k/include/asm/page.h~m68k-remove-support-for-discontigmem +++ a/arch/m68k/include/asm/page.h @@ -62,7 +62,7 @@ extern unsigned long _ramend; #include <asm/page_no.h> #endif -#if !defined(CONFIG_MMU) || defined(CONFIG_DISCONTIGMEM) +#ifndef CONFIG_MMU #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) #define __pfn_to_phys(pfn) PFN_PHYS(pfn) #endif --- a/arch/m68k/include/asm/page_mm.h~m68k-remove-support-for-discontigmem +++ a/arch/m68k/include/asm/page_mm.h @@ -126,26 +126,6 @@ static inline void *__va(unsigned long x extern int m68k_virt_to_node_shift; -#ifndef CONFIG_DISCONTIGMEM -#define __virt_to_node(addr) (&pg_data_map[0]) -#else -extern struct pglist_data *pg_data_table[]; - -static inline __attribute_const__ int __virt_to_node_shift(void) -{ - int shift; - - asm ( - "1: moveq #0,%0\n" - m68k_fixup(%c1, 1b) - : "=d" (shift) - : "i" (m68k_fixup_vnode_shift)); - return shift; -} - -#define __virt_to_node(addr) (pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()]) -#endif - #define virt_to_page(addr) ({ \ pfn_to_page(virt_to_pfn(addr)); \ }) @@ -153,23 +133,8 @@ static inline __attribute_const__ int __ pfn_to_virt(page_to_pfn(page)); \ }) -#ifdef CONFIG_DISCONTIGMEM -#define pfn_to_page(pfn) ({ \ - unsigned long __pfn = (pfn); \ - struct pglist_data *pgdat; \ - pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn)); \ - pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \ -}) -#define page_to_pfn(_page) ({ \ - const struct page *__p = (_page); \ - struct pglist_data *pgdat; \ - pgdat = &pg_data_map[page_to_nid(__p)]; \ - ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \ -}) -#else #define ARCH_PFN_OFFSET (m68k_memory[0].addr >> PAGE_SHIFT) #include <asm-generic/memory_model.h> -#endif #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) --- a/arch/m68k/Kconfig.cpu~m68k-remove-support-for-discontigmem +++ a/arch/m68k/Kconfig.cpu @@ -408,10 +408,6 @@ config SINGLE_MEMORY_CHUNK order" to save memory that could be wasted for unused memory map. Say N if not sure. -config ARCH_DISCONTIGMEM_ENABLE - depends on BROKEN - def_bool MMU && !SINGLE_MEMORY_CHUNK - config FORCE_MAX_ZONEORDER int "Maximum zone order" if ADVANCED depends on !SINGLE_MEMORY_CHUNK @@ -451,11 +447,6 @@ config M68K_L2_CACHE depends on MAC default y -config NODES_SHIFT - int - default "3" - depends on DISCONTIGMEM - config CPU_HAS_NO_BITFIELDS bool @@ -553,4 +544,3 @@ config CACHE_COPYBACK The ColdFire CPU cache is set into Copy-back mode. endchoice endif - --- a/arch/m68k/mm/init.c~m68k-remove-support-for-discontigmem +++ a/arch/m68k/mm/init.c @@ -44,28 +44,8 @@ EXPORT_SYMBOL(empty_zero_page); int m68k_virt_to_node_shift; -#ifdef CONFIG_DISCONTIGMEM -pg_data_t pg_data_map[MAX_NUMNODES]; -EXPORT_SYMBOL(pg_data_map); - -pg_data_t *pg_data_table[65]; -EXPORT_SYMBOL(pg_data_table); -#endif - void __init m68k_setup_node(int node) { -#ifdef CONFIG_DISCONTIGMEM - struct m68k_mem_info *info = m68k_memory + node; - int i, end; - - i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift(); - end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift(); - for (; i <= end; i++) { - if (pg_data_table[i]) - pr_warn("overlap at %u for chunk %u\n", i, node); - pg_data_table[i] = pg_data_map + node; - } -#endif node_set_online(node); } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 184/192] mm: remove CONFIG_DISCONTIGMEM 2021-06-29 2:32 incoming Andrew Morton ` (182 preceding siblings ...) 2021-06-29 2:42 ` [patch 183/192] m68k: " Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 185/192] arch, mm: remove stale mentions of DISCONIGMEM Andrew Morton ` (7 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: mm: remove CONFIG_DISCONTIGMEM There are no architectures that support DISCONTIGMEM left. Remove the configuration option and the dead code it was guarding in the generic memory management code. Link: https://lkml.kernel.org/r/20210608091316.3622-6-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/asm-generic/memory_model.h | 37 ++------------------------- include/linux/mmzone.h | 8 +++-- mm/Kconfig | 25 ++---------------- mm/page_alloc.c | 13 --------- 4 files changed, 12 insertions(+), 71 deletions(-) --- a/include/asm-generic/memory_model.h~mm-remove-config_discontigmem +++ a/include/asm-generic/memory_model.h @@ -6,47 +6,18 @@ #ifndef __ASSEMBLY__ +/* + * supports 3 memory models. + */ #if defined(CONFIG_FLATMEM) #ifndef ARCH_PFN_OFFSET #define ARCH_PFN_OFFSET (0UL) #endif -#elif defined(CONFIG_DISCONTIGMEM) - -#ifndef arch_pfn_to_nid -#define arch_pfn_to_nid(pfn) pfn_to_nid(pfn) -#endif - -#ifndef arch_local_page_offset -#define arch_local_page_offset(pfn, nid) \ - ((pfn) - NODE_DATA(nid)->node_start_pfn) -#endif - -#endif /* CONFIG_DISCONTIGMEM */ - -/* - * supports 3 memory models. - */ -#if defined(CONFIG_FLATMEM) - #define __pfn_to_page(pfn) (mem_map + ((pfn) - ARCH_PFN_OFFSET)) #define __page_to_pfn(page) ((unsigned long)((page) - mem_map) + \ ARCH_PFN_OFFSET) -#elif defined(CONFIG_DISCONTIGMEM) - -#define __pfn_to_page(pfn) \ -({ unsigned long __pfn = (pfn); \ - unsigned long __nid = arch_pfn_to_nid(__pfn); \ - NODE_DATA(__nid)->node_mem_map + arch_local_page_offset(__pfn, __nid);\ -}) - -#define __page_to_pfn(pg) \ -({ const struct page *__pg = (pg); \ - struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \ - (unsigned long)(__pg - __pgdat->node_mem_map) + \ - __pgdat->node_start_pfn; \ -}) #elif defined(CONFIG_SPARSEMEM_VMEMMAP) @@ -70,7 +41,7 @@ struct mem_section *__sec = __pfn_to_section(__pfn); \ __section_mem_map_addr(__sec) + __pfn; \ }) -#endif /* CONFIG_FLATMEM/DISCONTIGMEM/SPARSEMEM */ +#endif /* CONFIG_FLATMEM/SPARSEMEM */ /* * Convert a physical address to a Page Frame Number and back --- a/include/linux/mmzone.h~mm-remove-config_discontigmem +++ a/include/linux/mmzone.h @@ -749,10 +749,12 @@ struct zonelist { struct zoneref _zonerefs[MAX_ZONES_PER_ZONELIST + 1]; }; -#ifndef CONFIG_DISCONTIGMEM -/* The array of struct pages - for discontigmem use pgdat->lmem_map */ +/* + * The array of struct pages for flatmem. + * It must be declared for SPARSEMEM as well because there are configurations + * that rely on that. + */ extern struct page *mem_map; -#endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE struct deferred_split { --- a/mm/Kconfig~mm-remove-config_discontigmem +++ a/mm/Kconfig @@ -19,7 +19,7 @@ choice config FLATMEM_MANUAL bool "Flat Memory" - depends on !(ARCH_DISCONTIGMEM_ENABLE || ARCH_SPARSEMEM_ENABLE) || ARCH_FLATMEM_ENABLE + depends on !ARCH_SPARSEMEM_ENABLE || ARCH_FLATMEM_ENABLE help This option is best suited for non-NUMA systems with flat address space. The FLATMEM is the most efficient @@ -32,21 +32,6 @@ config FLATMEM_MANUAL If unsure, choose this option (Flat Memory) over any other. -config DISCONTIGMEM_MANUAL - bool "Discontiguous Memory" - depends on ARCH_DISCONTIGMEM_ENABLE - help - This option provides enhanced support for discontiguous - memory systems, over FLATMEM. These systems have holes - in their physical address spaces, and this option provides - more efficient handling of these holes. - - Although "Discontiguous Memory" is still used by several - architectures, it is considered deprecated in favor of - "Sparse Memory". - - If unsure, choose "Sparse Memory" over this option. - config SPARSEMEM_MANUAL bool "Sparse Memory" depends on ARCH_SPARSEMEM_ENABLE @@ -62,17 +47,13 @@ config SPARSEMEM_MANUAL endchoice -config DISCONTIGMEM - def_bool y - depends on (!SELECT_MEMORY_MODEL && ARCH_DISCONTIGMEM_ENABLE) || DISCONTIGMEM_MANUAL - config SPARSEMEM def_bool y depends on (!SELECT_MEMORY_MODEL && ARCH_SPARSEMEM_ENABLE) || SPARSEMEM_MANUAL config FLATMEM def_bool y - depends on (!DISCONTIGMEM && !SPARSEMEM) || FLATMEM_MANUAL + depends on !SPARSEMEM || FLATMEM_MANUAL config FLAT_NODE_MEM_MAP def_bool y @@ -85,7 +66,7 @@ config FLAT_NODE_MEM_MAP # config NEED_MULTIPLE_NODES def_bool y - depends on DISCONTIGMEM || NUMA + depends on NUMA # # SPARSEMEM_EXTREME (which is the default) does some bootmem --- a/mm/page_alloc.c~mm-remove-config_discontigmem +++ a/mm/page_alloc.c @@ -349,20 +349,7 @@ compound_page_dtor * const compound_page int min_free_kbytes = 1024; int user_min_free_kbytes = -1; -#ifdef CONFIG_DISCONTIGMEM -/* - * DiscontigMem defines memory ranges as separate pg_data_t even if the ranges - * are not on separate NUMA nodes. Functionally this works but with - * watermark_boost_factor, it can reclaim prematurely as the ranges can be - * quite small. By default, do not boost watermarks on discontigmem as in - * many cases very high-order allocations like THP are likely to be - * unsupported and the premature reclaim offsets the advantage of long-term - * fragmentation avoidance. - */ -int watermark_boost_factor __read_mostly; -#else int watermark_boost_factor __read_mostly = 15000; -#endif int watermark_scale_factor = 10; static unsigned long nr_kernel_pages __initdata; _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 185/192] arch, mm: remove stale mentions of DISCONIGMEM 2021-06-29 2:32 incoming Andrew Morton ` (183 preceding siblings ...) 2021-06-29 2:42 ` [patch 184/192] mm: remove CONFIG_DISCONTIGMEM Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:42 ` [patch 186/192] docs: remove description of DISCONTIGMEM Andrew Morton ` (6 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: arch, mm: remove stale mentions of DISCONIGMEM There are several places that mention DISCONIGMEM in comments or have stale code guarded by CONFIG_DISCONTIGMEM. Remove the dead code and update the comments. Link: https://lkml.kernel.org/r/20210608091316.3622-7-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/ia64/kernel/topology.c | 5 ++--- arch/ia64/mm/numa.c | 5 ++--- arch/mips/include/asm/mmzone.h | 6 ------ arch/mips/mm/init.c | 3 --- arch/nds32/include/asm/memory.h | 6 ------ arch/xtensa/include/asm/page.h | 4 ---- include/linux/gfp.h | 4 ++-- 7 files changed, 6 insertions(+), 27 deletions(-) --- a/arch/ia64/kernel/topology.c~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/ia64/kernel/topology.c @@ -3,9 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * This file contains NUMA specific variables and functions which can - * be split away from DISCONTIGMEM and are used on NUMA machines with - * contiguous memory. + * This file contains NUMA specific variables and functions which are used on + * NUMA machines with contiguous memory. * 2002/08/07 Erich Focht <efocht@ess.nec.de> * Populate cpu entries in sysfs for non-numa systems as well * Intel Corporation - Ashok Raj --- a/arch/ia64/mm/numa.c~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/ia64/mm/numa.c @@ -3,9 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * This file contains NUMA specific variables and functions which can - * be split away from DISCONTIGMEM and are used on NUMA machines with - * contiguous memory. + * This file contains NUMA specific variables and functions which are used on + * NUMA machines with contiguous memory. * * 2002/08/07 Erich Focht <efocht@ess.nec.de> */ --- a/arch/mips/include/asm/mmzone.h~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/mips/include/asm/mmzone.h @@ -20,10 +20,4 @@ #define nid_to_addrbase(nid) 0 #endif -#ifdef CONFIG_DISCONTIGMEM - -#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT) - -#endif /* CONFIG_DISCONTIGMEM */ - #endif /* _ASM_MMZONE_H_ */ --- a/arch/mips/mm/init.c~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/mips/mm/init.c @@ -454,9 +454,6 @@ void __init mem_init(void) BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)); #ifdef CONFIG_HIGHMEM -#ifdef CONFIG_DISCONTIGMEM -#error "CONFIG_HIGHMEM and CONFIG_DISCONTIGMEM dont work together yet" -#endif max_mapnr = highend_pfn ? highend_pfn : max_low_pfn; #else max_mapnr = max_low_pfn; --- a/arch/nds32/include/asm/memory.h~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/nds32/include/asm/memory.h @@ -76,18 +76,12 @@ * virt_to_page(k) convert a _valid_ virtual address to struct page * * virt_addr_valid(k) indicates whether a virtual address is valid */ -#ifndef CONFIG_DISCONTIGMEM - #define ARCH_PFN_OFFSET PHYS_PFN_OFFSET #define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr)) #define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)) #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) -#else /* CONFIG_DISCONTIGMEM */ -#error CONFIG_DISCONTIGMEM is not supported yet. -#endif /* !CONFIG_DISCONTIGMEM */ - #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #endif --- a/arch/xtensa/include/asm/page.h~arch-mm-remove-stale-mentions-of-disconigmem +++ a/arch/xtensa/include/asm/page.h @@ -192,10 +192,6 @@ static inline unsigned long ___pa(unsign #define pfn_valid(pfn) \ ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) -#ifdef CONFIG_DISCONTIGMEM -# error CONFIG_DISCONTIGMEM not supported -#endif - #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) --- a/include/linux/gfp.h~arch-mm-remove-stale-mentions-of-disconigmem +++ a/include/linux/gfp.h @@ -494,8 +494,8 @@ static inline int gfp_zonelist(gfp_t fla * There are two zonelists per node, one for all zones with memory and * one containing just zones from the node the zonelist belongs to. * - * For the normal case of non-DISCONTIGMEM systems the NODE_DATA() gets - * optimized to &contig_page_data at compile-time. + * For the case of non-NUMA systems the NODE_DATA() gets optimized to + * &contig_page_data at compile-time. */ static inline struct zonelist *node_zonelist(int nid, gfp_t flags) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 186/192] docs: remove description of DISCONTIGMEM 2021-06-29 2:32 incoming Andrew Morton ` (184 preceding siblings ...) 2021-06-29 2:42 ` [patch 185/192] arch, mm: remove stale mentions of DISCONIGMEM Andrew Morton @ 2021-06-29 2:42 ` Andrew Morton 2021-06-29 2:43 ` [patch 187/192] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA Andrew Morton ` (5 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:42 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: docs: remove description of DISCONTIGMEM Remove description of DISCONTIGMEM from the "Memory Models" document and update VM sysctl description so that it won't mention DISCONIGMEM. Link: https://lkml.kernel.org/r/20210608091316.3622-8-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- Documentation/admin-guide/sysctl/vm.rst | 12 ++--- Documentation/vm/memory-model.rst | 45 ---------------------- 2 files changed, 8 insertions(+), 49 deletions(-) --- a/Documentation/admin-guide/sysctl/vm.rst~docs-remove-description-of-discontigmem +++ a/Documentation/admin-guide/sysctl/vm.rst @@ -938,12 +938,12 @@ allocations, THP and hugetlbfs pages. To make it sensible with respect to the watermark_scale_factor parameter, the unit is in fractions of 10,000. The default value of -15,000 on !DISCONTIGMEM configurations means that up to 150% of the high -watermark will be reclaimed in the event of a pageblock being mixed due -to fragmentation. The level of reclaim is determined by the number of -fragmentation events that occurred in the recent past. If this value is -smaller than a pageblock then a pageblocks worth of pages will be reclaimed -(e.g. 2MB on 64-bit x86). A boost factor of 0 will disable the feature. +15,000 means that up to 150% of the high watermark will be reclaimed in the +event of a pageblock being mixed due to fragmentation. The level of reclaim +is determined by the number of fragmentation events that occurred in the +recent past. If this value is smaller than a pageblock then a pageblocks +worth of pages will be reclaimed (e.g. 2MB on 64-bit x86). A boost factor +of 0 will disable the feature. watermark_scale_factor --- a/Documentation/vm/memory-model.rst~docs-remove-description-of-discontigmem +++ a/Documentation/vm/memory-model.rst @@ -14,15 +14,11 @@ for the CPU. Then there could be several completely distinct addresses. And, don't forget about NUMA, where different memory banks are attached to different CPUs. -Linux abstracts this diversity using one of the three memory models: -FLATMEM, DISCONTIGMEM and SPARSEMEM. Each architecture defines what +Linux abstracts this diversity using one of the two memory models: +FLATMEM and SPARSEMEM. Each architecture defines what memory models it supports, what the default memory model is and whether it is possible to manually override that default. -.. note:: - At time of this writing, DISCONTIGMEM is considered deprecated, - although it is still in use by several architectures. - All the memory models track the status of physical page frames using struct page arranged in one or more arrays. @@ -63,43 +59,6 @@ straightforward: `PFN - ARCH_PFN_OFFSET` The `ARCH_PFN_OFFSET` defines the first page frame number for systems with physical memory starting at address different from 0. -DISCONTIGMEM -============ - -The DISCONTIGMEM model treats the physical memory as a collection of -`nodes` similarly to how Linux NUMA support does. For each node Linux -constructs an independent memory management subsystem represented by -`struct pglist_data` (or `pg_data_t` for short). Among other -things, `pg_data_t` holds the `node_mem_map` array that maps -physical pages belonging to that node. The `node_start_pfn` field of -`pg_data_t` is the number of the first page frame belonging to that -node. - -The architecture setup code should call :c:func:`free_area_init_node` for -each node in the system to initialize the `pg_data_t` object and its -`node_mem_map`. - -Every `node_mem_map` behaves exactly as FLATMEM's `mem_map` - -every physical page frame in a node has a `struct page` entry in the -`node_mem_map` array. When DISCONTIGMEM is enabled, a portion of the -`flags` field of the `struct page` encodes the node number of the -node hosting that page. - -The conversion between a PFN and the `struct page` in the -DISCONTIGMEM model became slightly more complex as it has to determine -which node hosts the physical page and which `pg_data_t` object -holds the `struct page`. - -Architectures that support DISCONTIGMEM provide :c:func:`pfn_to_nid` -to convert PFN to the node number. The opposite conversion helper -:c:func:`page_to_nid` is generic as it uses the node number encoded in -page->flags. - -Once the node number is known, the PFN can be used to index -appropriate `node_mem_map` array to access the `struct page` and -the offset of the `struct page` from the `node_mem_map` plus -`node_start_pfn` is the PFN of that page. - SPARSEMEM ========= _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 187/192] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA 2021-06-29 2:32 incoming Andrew Morton ` (185 preceding siblings ...) 2021-06-29 2:42 ` [patch 186/192] docs: remove description of DISCONTIGMEM Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 2021-06-29 2:43 ` [patch 188/192] mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM Andrew Morton ` (4 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA configuration options are equivalent. Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead. Done with $ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \ $(git grep -wl CONFIG_NEED_MULTIPLE_NODES) $ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \ $(git grep -wl NEED_MULTIPLE_NODES) with manual tweaks afterwards. [rppt@linux.ibm.com: fix arm boot crash] Link: https://lkml.kernel.org/r/YMj9vHhHOiCVN4BF@linux.ibm.com Link: https://lkml.kernel.org/r/20210608091316.3622-9-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arm64/Kconfig | 2 +- arch/ia64/Kconfig | 2 +- arch/mips/Kconfig | 2 +- arch/mips/include/asm/mmzone.h | 2 +- arch/mips/include/asm/page.h | 2 +- arch/mips/mm/init.c | 4 ++-- arch/powerpc/Kconfig | 2 +- arch/powerpc/include/asm/mmzone.h | 4 ++-- arch/powerpc/kernel/setup_64.c | 2 +- arch/powerpc/kernel/smp.c | 2 +- arch/powerpc/kexec/core.c | 4 ++-- arch/powerpc/mm/Makefile | 2 +- arch/powerpc/mm/mem.c | 4 ++-- arch/riscv/Kconfig | 2 +- arch/s390/Kconfig | 2 +- arch/sh/include/asm/mmzone.h | 4 ++-- arch/sh/kernel/topology.c | 2 +- arch/sh/mm/Kconfig | 2 +- arch/sh/mm/init.c | 2 +- arch/sparc/Kconfig | 2 +- arch/sparc/include/asm/mmzone.h | 4 ++-- arch/sparc/kernel/smp_64.c | 2 +- arch/sparc/mm/init_64.c | 12 ++++++------ arch/x86/Kconfig | 2 +- arch/x86/kernel/setup_percpu.c | 6 +++--- arch/x86/mm/init_32.c | 4 ++-- include/asm-generic/topology.h | 2 +- include/linux/memblock.h | 6 +++--- include/linux/mm.h | 4 ++-- include/linux/mmzone.h | 6 +++--- kernel/crash_core.c | 2 +- mm/Kconfig | 9 --------- mm/memblock.c | 8 ++++---- mm/memory.c | 3 +-- mm/page_alloc.c | 6 +++--- mm/sparse.c | 2 +- 36 files changed, 59 insertions(+), 69 deletions(-) --- a/arch/arm64/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/arm64/Kconfig @@ -1035,7 +1035,7 @@ config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" range 1 10 default "4" - depends on NEED_MULTIPLE_NODES + depends on NUMA help Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. --- a/arch/ia64/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/ia64/Kconfig @@ -302,7 +302,7 @@ config NODES_SHIFT int "Max num nodes shift(3-10)" range 3 10 default "10" - depends on NEED_MULTIPLE_NODES + depends on NUMA help This option specifies the maximum number of nodes in your SSI system. MAX_NUMNODES will be 2^(This value). --- a/arch/mips/include/asm/mmzone.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/mips/include/asm/mmzone.h @@ -8,7 +8,7 @@ #include <asm/page.h> -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA # include <mmzone.h> #endif --- a/arch/mips/include/asm/page.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/mips/include/asm/page.h @@ -239,7 +239,7 @@ static inline int pfn_valid(unsigned lon /* pfn_valid is defined in linux/mmzone.h */ -#elif defined(CONFIG_NEED_MULTIPLE_NODES) +#elif defined(CONFIG_NUMA) #define pfn_valid(pfn) \ ({ \ --- a/arch/mips/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/mips/Kconfig @@ -2867,7 +2867,7 @@ config RANDOMIZE_BASE_MAX_OFFSET config NODES_SHIFT int default "6" - depends on NEED_MULTIPLE_NODES + depends on NUMA config HW_PERF_EVENTS bool "Enable hardware performance counter support for perf events" --- a/arch/mips/mm/init.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/mips/mm/init.c @@ -394,7 +394,7 @@ void maar_init(void) } } -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA void __init paging_init(void) { unsigned long max_zone_pfns[MAX_NR_ZONES]; @@ -473,7 +473,7 @@ void __init mem_init(void) 0x80000000 - 4, KCORE_TEXT); #endif } -#endif /* !CONFIG_NEED_MULTIPLE_NODES */ +#endif /* !CONFIG_NUMA */ void free_init_pages(const char *what, unsigned long begin, unsigned long end) { --- a/arch/powerpc/include/asm/mmzone.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/include/asm/mmzone.h @@ -18,7 +18,7 @@ * flags field of the struct page */ -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA extern struct pglist_data *node_data[]; /* @@ -41,7 +41,7 @@ u64 memory_hotplug_max(void); #else #define memory_hotplug_max() memblock_end_of_DRAM() -#endif /* CONFIG_NEED_MULTIPLE_NODES */ +#endif /* CONFIG_NUMA */ #ifdef CONFIG_FA_DUMP #define __HAVE_ARCH_RESERVED_KERNEL_PAGES #endif --- a/arch/powerpc/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/Kconfig @@ -671,7 +671,7 @@ config NODES_SHIFT int default "8" if PPC64 default "4" - depends on NEED_MULTIPLE_NODES + depends on NUMA config USE_PERCPU_NUMA_NODE_ID def_bool y --- a/arch/powerpc/kernel/setup_64.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/kernel/setup_64.c @@ -788,7 +788,7 @@ static void * __init pcpu_alloc_bootmem( size_t align) { const unsigned long goal = __pa(MAX_DMA_ADDRESS); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int node = early_cpu_to_node(cpu); void *ptr; --- a/arch/powerpc/kernel/smp.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/kernel/smp.c @@ -1047,7 +1047,7 @@ void __init smp_prepare_cpus(unsigned in zalloc_cpumask_var_node(&per_cpu(cpu_coregroup_map, cpu), GFP_KERNEL, cpu_to_node(cpu)); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA /* * numa_node_id() works after this. */ --- a/arch/powerpc/kexec/core.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/kexec/core.c @@ -68,11 +68,11 @@ void machine_kexec_cleanup(struct kimage void arch_crash_save_vmcoreinfo(void) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA VMCOREINFO_SYMBOL(node_data); VMCOREINFO_LENGTH(node_data, MAX_NUMNODES); #endif -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA VMCOREINFO_SYMBOL(contig_page_data); #endif #if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP) --- a/arch/powerpc/mm/Makefile~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/mm/Makefile @@ -13,7 +13,7 @@ obj-y := fault.o mem.o pgtable.o mmap obj-$(CONFIG_PPC_MMU_NOHASH) += nohash/ obj-$(CONFIG_PPC_BOOK3S_32) += book3s32/ obj-$(CONFIG_PPC_BOOK3S_64) += book3s64/ -obj-$(CONFIG_NEED_MULTIPLE_NODES) += numa.o +obj-$(CONFIG_NUMA) += numa.o obj-$(CONFIG_PPC_MM_SLICES) += slice.o obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o --- a/arch/powerpc/mm/mem.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/powerpc/mm/mem.c @@ -127,7 +127,7 @@ void __ref arch_remove_memory(int nid, u } #endif -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA void __init mem_topology_setup(void) { max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT; @@ -162,7 +162,7 @@ static int __init mark_nonram_nosave(voi return 0; } -#else /* CONFIG_NEED_MULTIPLE_NODES */ +#else /* CONFIG_NUMA */ static int __init mark_nonram_nosave(void) { return 0; --- a/arch/riscv/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/riscv/Kconfig @@ -332,7 +332,7 @@ config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" range 1 10 default "2" - depends on NEED_MULTIPLE_NODES + depends on NUMA help Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. --- a/arch/s390/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/s390/Kconfig @@ -475,7 +475,7 @@ config NUMA config NODES_SHIFT int - depends on NEED_MULTIPLE_NODES + depends on NUMA default "1" config SCHED_SMT --- a/arch/sh/include/asm/mmzone.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sh/include/asm/mmzone.h @@ -2,7 +2,7 @@ #ifndef __ASM_SH_MMZONE_H #define __ASM_SH_MMZONE_H -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA #include <linux/numa.h> extern struct pglist_data *node_data[]; @@ -31,7 +31,7 @@ static inline void setup_bootmem_node(int nid, unsigned long start, unsigned long end) { } -#endif /* CONFIG_NEED_MULTIPLE_NODES */ +#endif /* CONFIG_NUMA */ /* Platform specific mem init */ void __init plat_mem_setup(void); --- a/arch/sh/kernel/topology.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sh/kernel/topology.c @@ -46,7 +46,7 @@ static int __init topology_init(void) { int i, ret; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA for_each_online_node(i) register_one_node(i); #endif --- a/arch/sh/mm/init.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sh/mm/init.c @@ -211,7 +211,7 @@ void __init allocate_pgdat(unsigned int get_pfn_range_for_nid(nid, &start_pfn, &end_pfn); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA NODE_DATA(nid) = memblock_alloc_try_nid( sizeof(struct pglist_data), SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, --- a/arch/sh/mm/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sh/mm/Kconfig @@ -120,7 +120,7 @@ config NODES_SHIFT int default "3" if CPU_SUBTYPE_SHX3 default "1" - depends on NEED_MULTIPLE_NODES + depends on NUMA config ARCH_FLATMEM_ENABLE def_bool y --- a/arch/sparc/include/asm/mmzone.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sparc/include/asm/mmzone.h @@ -2,7 +2,7 @@ #ifndef _SPARC64_MMZONE_H #define _SPARC64_MMZONE_H -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA #include <linux/cpumask.h> @@ -13,6 +13,6 @@ extern struct pglist_data *node_data[]; extern int numa_cpu_lookup_table[]; extern cpumask_t numa_cpumask_lookup_table[]; -#endif /* CONFIG_NEED_MULTIPLE_NODES */ +#endif /* CONFIG_NUMA */ #endif /* _SPARC64_MMZONE_H */ --- a/arch/sparc/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sparc/Kconfig @@ -265,7 +265,7 @@ config NODES_SHIFT int "Maximum NUMA Nodes (as a power of 2)" range 4 5 if SPARC64 default "5" - depends on NEED_MULTIPLE_NODES + depends on NUMA help Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. --- a/arch/sparc/kernel/smp_64.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sparc/kernel/smp_64.c @@ -1546,7 +1546,7 @@ static void * __init pcpu_alloc_bootmem( size_t align) { const unsigned long goal = __pa(MAX_DMA_ADDRESS); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int node = cpu_to_node(cpu); void *ptr; --- a/arch/sparc/mm/init_64.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/sparc/mm/init_64.c @@ -903,7 +903,7 @@ struct node_mem_mask { static struct node_mem_mask node_masks[MAX_NUMNODES]; static int num_node_masks; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA struct mdesc_mlgroup { u64 node; @@ -1059,7 +1059,7 @@ static void __init allocate_node_data(in { struct pglist_data *p; unsigned long start_pfn, end_pfn; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA NODE_DATA(nid) = memblock_alloc_node(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid); @@ -1080,7 +1080,7 @@ static void __init allocate_node_data(in static void init_node_masks_nonnuma(void) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int i; #endif @@ -1090,7 +1090,7 @@ static void init_node_masks_nonnuma(void node_masks[0].match = 0; num_node_masks = 1; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA for (i = 0; i < NR_CPUS; i++) numa_cpu_lookup_table[i] = 0; @@ -1098,7 +1098,7 @@ static void init_node_masks_nonnuma(void #endif } -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA struct pglist_data *node_data[MAX_NUMNODES]; EXPORT_SYMBOL(numa_cpu_lookup_table); @@ -2487,7 +2487,7 @@ int page_in_phys_avail(unsigned long pad static void __init register_page_bootmem_info(void) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int i; for_each_online_node(i) --- a/arch/x86/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/x86/Kconfig @@ -1597,7 +1597,7 @@ config NODES_SHIFT default "10" if MAXSMP default "6" if X86_64 default "3" - depends on NEED_MULTIPLE_NODES + depends on NUMA help Specify the maximum number of NUMA Nodes available on the target system. Increases memory reserved to accommodate various tables. --- a/arch/x86/kernel/setup_percpu.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/x86/kernel/setup_percpu.c @@ -66,7 +66,7 @@ EXPORT_SYMBOL(__per_cpu_offset); */ static bool __init pcpu_need_numa(void) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA pg_data_t *last = NULL; unsigned int cpu; @@ -101,7 +101,7 @@ static void * __init pcpu_alloc_bootmem( unsigned long align) { const unsigned long goal = __pa(MAX_DMA_ADDRESS); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int node = early_cpu_to_node(cpu); void *ptr; @@ -140,7 +140,7 @@ static void __init pcpu_fc_free(void *pt static int __init pcpu_cpu_distance(unsigned int from, unsigned int to) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA if (early_cpu_to_node(from) == early_cpu_to_node(to)) return LOCAL_DISTANCE; else --- a/arch/x86/mm/init_32.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/arch/x86/mm/init_32.c @@ -651,7 +651,7 @@ void __init find_low_pfn_range(void) highmem_pfn_init(); } -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA void __init initmem_init(void) { #ifdef CONFIG_HIGHMEM @@ -677,7 +677,7 @@ void __init initmem_init(void) setup_bootmem_allocator(); } -#endif /* !CONFIG_NEED_MULTIPLE_NODES */ +#endif /* !CONFIG_NUMA */ void __init setup_bootmem_allocator(void) { --- a/include/asm-generic/topology.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/include/asm-generic/topology.h @@ -45,7 +45,7 @@ #endif #ifndef cpumask_of_node - #ifdef CONFIG_NEED_MULTIPLE_NODES + #ifdef CONFIG_NUMA #define cpumask_of_node(node) ((node) == 0 ? cpu_online_mask : cpu_none_mask) #else #define cpumask_of_node(node) ((void)(node), cpu_online_mask) --- a/include/linux/memblock.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/include/linux/memblock.h @@ -50,7 +50,7 @@ struct memblock_region { phys_addr_t base; phys_addr_t size; enum memblock_flags flags; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int nid; #endif }; @@ -347,7 +347,7 @@ int __init deferred_page_init_max_thread int memblock_set_node(phys_addr_t base, phys_addr_t size, struct memblock_type *type, int nid); -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA static inline void memblock_set_region_node(struct memblock_region *r, int nid) { r->nid = nid; @@ -366,7 +366,7 @@ static inline int memblock_get_region_no { return 0; } -#endif /* CONFIG_NEED_MULTIPLE_NODES */ +#endif /* CONFIG_NUMA */ /* Flags for memblock allocation APIs */ #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0) --- a/include/linux/mm.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/include/linux/mm.h @@ -46,7 +46,7 @@ extern int sysctl_page_lock_unfairness; void init_mm_internals(void); -#ifndef CONFIG_NEED_MULTIPLE_NODES /* Don't use mapnrs, do it properly */ +#ifndef CONFIG_NUMA /* Don't use mapnrs, do it properly */ extern unsigned long max_mapnr; static inline void set_max_mapnr(unsigned long limit) @@ -2460,7 +2460,7 @@ extern void get_pfn_range_for_nid(unsign unsigned long *start_pfn, unsigned long *end_pfn); extern unsigned long find_min_pfn_with_active_regions(void); -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA static inline int early_pfn_to_nid(unsigned long pfn) { return 0; --- a/include/linux/mmzone.h~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/include/linux/mmzone.h @@ -1043,17 +1043,17 @@ extern int percpu_pagelist_high_fraction extern char numa_zonelist_order[]; #define NUMA_ZONELIST_ORDER_LEN 16 -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA extern struct pglist_data contig_page_data; #define NODE_DATA(nid) (&contig_page_data) #define NODE_MEM_MAP(nid) mem_map -#else /* CONFIG_NEED_MULTIPLE_NODES */ +#else /* CONFIG_NUMA */ #include <asm/mmzone.h> -#endif /* !CONFIG_NEED_MULTIPLE_NODES */ +#endif /* !CONFIG_NUMA */ extern struct pglist_data *first_online_pgdat(void); extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat); --- a/kernel/crash_core.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/kernel/crash_core.c @@ -455,7 +455,7 @@ static int __init crash_save_vmcoreinfo_ VMCOREINFO_SYMBOL(_stext); VMCOREINFO_SYMBOL(vmap_area_list); -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA VMCOREINFO_SYMBOL(mem_map); VMCOREINFO_SYMBOL(contig_page_data); #endif --- a/mm/Kconfig~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/mm/Kconfig @@ -60,15 +60,6 @@ config FLAT_NODE_MEM_MAP depends on !SPARSEMEM # -# Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's -# to represent different areas of memory. This variable allows -# those dependencies to exist individually. -# -config NEED_MULTIPLE_NODES - def_bool y - depends on NUMA - -# # SPARSEMEM_EXTREME (which is the default) does some bootmem # allocations when sparse_init() is called. If this cannot # be done on your architecture, select this option. However, --- a/mm/memblock.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/mm/memblock.c @@ -92,7 +92,7 @@ * system initialization completes. */ -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA struct pglist_data __refdata contig_page_data; EXPORT_SYMBOL(contig_page_data); #endif @@ -607,7 +607,7 @@ repeat: * area, insert that portion. */ if (rbase > base) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA WARN_ON(nid != memblock_get_region_node(rgn)); #endif WARN_ON(flags != rgn->flags); @@ -1205,7 +1205,7 @@ void __init_memblock __next_mem_pfn_rang int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size, struct memblock_type *type, int nid) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA int start_rgn, end_rgn; int i, ret; @@ -1849,7 +1849,7 @@ static void __init_memblock memblock_dum size = rgn->size; end = base + size - 1; flags = rgn->flags; -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA if (memblock_get_region_node(rgn) != MAX_NUMNODES) snprintf(nid_buf, sizeof(nid_buf), " on node %d", memblock_get_region_node(rgn)); --- a/mm/memory.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/mm/memory.c @@ -90,8 +90,7 @@ #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. #endif -#ifndef CONFIG_NEED_MULTIPLE_NODES -/* use the per-pgdat data instead for discontigmem - mbligh */ +#ifndef CONFIG_NUMA unsigned long max_mapnr; EXPORT_SYMBOL(max_mapnr); --- a/mm/page_alloc.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/mm/page_alloc.c @@ -1634,7 +1634,7 @@ void __free_pages_core(struct page *page __free_pages_ok(page, order, FPI_TO_TAIL | FPI_SKIP_KASAN_POISON); } -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA /* * During memory init memblocks map pfns to nids. The search is expensive and @@ -1684,7 +1684,7 @@ int __meminit early_pfn_to_nid(unsigned return nid; } -#endif /* CONFIG_NEED_MULTIPLE_NODES */ +#endif /* CONFIG_NUMA */ void __init memblock_free_pages(struct page *page, unsigned long pfn, unsigned int order) @@ -7438,7 +7438,7 @@ static void __ref alloc_node_mem_map(str pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n", __func__, pgdat->node_id, (unsigned long)pgdat, (unsigned long)pgdat->node_mem_map); -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA /* * With no DISCONTIG, the global mem_map is just set as node 0's */ --- a/mm/sparse.c~mm-replace-config_need_multiple_nodes-with-config_numa +++ a/mm/sparse.c @@ -346,7 +346,7 @@ size_t mem_section_usage_size(void) static inline phys_addr_t pgdat_to_phys(struct pglist_data *pgdat) { -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA return __pa_symbol(pgdat); #else return __pa(pgdat); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 188/192] mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM 2021-06-29 2:32 incoming Andrew Morton ` (186 preceding siblings ...) 2021-06-29 2:43 ` [patch 187/192] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 2021-06-29 2:43 ` [patch 189/192] mm/page_alloc: allow high-order pages to be stored on the per-cpu lists Andrew Morton ` (3 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, arnd, corbet, david, geert, ink, linux-mm, mattst88, mm-commits, rppt, rth, torvalds, vgupta From: Mike Rapoport <rppt@linux.ibm.com> Subject: mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM After removal of the DISCONTIGMEM memory model the FLAT_NODE_MEM_MAP configuration option is equivalent to FLATMEM. Drop CONFIG_FLAT_NODE_MEM_MAP and use CONFIG_FLATMEM instead. Link: https://lkml.kernel.org/r/20210608091316.3622-10-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 4 ++-- kernel/crash_core.c | 2 +- mm/Kconfig | 4 ---- mm/page_alloc.c | 6 +++--- mm/page_ext.c | 2 +- 5 files changed, 7 insertions(+), 11 deletions(-) --- a/include/linux/mmzone.h~mm-replace-config_flat_node_mem_map-with-config_flatmem +++ a/include/linux/mmzone.h @@ -788,7 +788,7 @@ typedef struct pglist_data { struct zonelist node_zonelists[MAX_ZONELISTS]; int nr_zones; /* number of populated zones in this node */ -#ifdef CONFIG_FLAT_NODE_MEM_MAP /* means !SPARSEMEM */ +#ifdef CONFIG_FLATMEM /* means !SPARSEMEM */ struct page *node_mem_map; #ifdef CONFIG_PAGE_EXTENSION struct page_ext *node_page_ext; @@ -878,7 +878,7 @@ typedef struct pglist_data { #define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages) #define node_spanned_pages(nid) (NODE_DATA(nid)->node_spanned_pages) -#ifdef CONFIG_FLAT_NODE_MEM_MAP +#ifdef CONFIG_FLATMEM #define pgdat_page_nr(pgdat, pagenr) ((pgdat)->node_mem_map + (pagenr)) #else #define pgdat_page_nr(pgdat, pagenr) pfn_to_page((pgdat)->node_start_pfn + (pagenr)) --- a/kernel/crash_core.c~mm-replace-config_flat_node_mem_map-with-config_flatmem +++ a/kernel/crash_core.c @@ -484,7 +484,7 @@ static int __init crash_save_vmcoreinfo_ VMCOREINFO_OFFSET(page, compound_head); VMCOREINFO_OFFSET(pglist_data, node_zones); VMCOREINFO_OFFSET(pglist_data, nr_zones); -#ifdef CONFIG_FLAT_NODE_MEM_MAP +#ifdef CONFIG_FLATMEM VMCOREINFO_OFFSET(pglist_data, node_mem_map); #endif VMCOREINFO_OFFSET(pglist_data, node_start_pfn); --- a/mm/Kconfig~mm-replace-config_flat_node_mem_map-with-config_flatmem +++ a/mm/Kconfig @@ -55,10 +55,6 @@ config FLATMEM def_bool y depends on !SPARSEMEM || FLATMEM_MANUAL -config FLAT_NODE_MEM_MAP - def_bool y - depends on !SPARSEMEM - # # SPARSEMEM_EXTREME (which is the default) does some bootmem # allocations when sparse_init() is called. If this cannot --- a/mm/page_alloc.c~mm-replace-config_flat_node_mem_map-with-config_flatmem +++ a/mm/page_alloc.c @@ -6547,7 +6547,7 @@ static void __meminit zone_init_free_lis } } -#if !defined(CONFIG_FLAT_NODE_MEM_MAP) +#if !defined(CONFIG_FLATMEM) /* * Only struct pages that correspond to ranges defined by memblock.memory * are zeroed and initialized by going through __init_single_page() during @@ -7403,7 +7403,7 @@ static void __init free_area_init_core(s } } -#ifdef CONFIG_FLAT_NODE_MEM_MAP +#ifdef CONFIG_FLATMEM static void __ref alloc_node_mem_map(struct pglist_data *pgdat) { unsigned long __maybe_unused start = 0; @@ -7451,7 +7451,7 @@ static void __ref alloc_node_mem_map(str } #else static void __ref alloc_node_mem_map(struct pglist_data *pgdat) { } -#endif /* CONFIG_FLAT_NODE_MEM_MAP */ +#endif /* CONFIG_FLATMEM */ #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT static inline void pgdat_set_deferred_range(pg_data_t *pgdat) --- a/mm/page_ext.c~mm-replace-config_flat_node_mem_map-with-config_flatmem +++ a/mm/page_ext.c @@ -191,7 +191,7 @@ fail: panic("Out of memory"); } -#else /* CONFIG_FLAT_NODE_MEM_MAP */ +#else /* CONFIG_FLATMEM */ struct page_ext *lookup_page_ext(const struct page *page) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 189/192] mm/page_alloc: allow high-order pages to be stored on the per-cpu lists 2021-06-29 2:32 incoming Andrew Morton ` (187 preceding siblings ...) 2021-06-29 2:43 ` [patch 188/192] mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 2021-06-29 2:43 ` [patch 190/192] mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes Andrew Morton ` (2 subsequent siblings) 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, brouer, dave.hansen, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka, ziy From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: allow high-order pages to be stored on the per-cpu lists The per-cpu page allocator (PCP) only stores order-0 pages. This means that all THP and "cheap" high-order allocations including SLUB contends on the zone->lock. This patch extends the PCP allocator to store THP and "cheap" high-order pages. Note that struct per_cpu_pages increases in size to 256 bytes (4 cache lines) on x86-64. Note that this is not necessarily a universal performance win because of how it is implemented. High-order pages can cause pcp->high to be exceeded prematurely for lower-orders so for example, a large number of THP pages being freed could release order-0 pages from the PCP lists. Hence, much depends on the allocation/free pattern as observed by a single CPU to determine if caching helps or hurts a particular workload. That said, basic performance testing passed. The following is a netperf UDP_STREAM test which hits the relevant patches as some of the network allocations are high-order. netperf-udp 5.13.0-rc2 5.13.0-rc2 mm-pcpburst-v3r4 mm-pcphighorder-v1r7 Hmean send-64 261.46 ( 0.00%) 266.30 * 1.85%* Hmean send-128 516.35 ( 0.00%) 536.78 * 3.96%* Hmean send-256 1014.13 ( 0.00%) 1034.63 * 2.02%* Hmean send-1024 3907.65 ( 0.00%) 4046.11 * 3.54%* Hmean send-2048 7492.93 ( 0.00%) 7754.85 * 3.50%* Hmean send-3312 11410.04 ( 0.00%) 11772.32 * 3.18%* Hmean send-4096 13521.95 ( 0.00%) 13912.34 * 2.89%* Hmean send-8192 21660.50 ( 0.00%) 22730.72 * 4.94%* Hmean send-16384 31902.32 ( 0.00%) 32637.50 * 2.30%* Functionally, a patch like this is necessary to make bulk allocation of high-order pages work with similar performance to order-0 bulk allocations. The bulk allocator is not updated in this series as it would have to be determined by bulk allocation users how they want to track the order of pages allocated with the bulk allocator. Link: https://lkml.kernel.org/r/20210611135753.GC30378@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/mmzone.h | 20 ++++ mm/internal.h | 2 mm/page_alloc.c | 169 ++++++++++++++++++++++++++++----------- mm/swap.c | 2 4 files changed, 144 insertions(+), 49 deletions(-) --- a/include/linux/mmzone.h~mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists +++ a/include/linux/mmzone.h @@ -333,6 +333,24 @@ enum zone_watermarks { NR_WMARK }; +/* + * One per migratetype for each PAGE_ALLOC_COSTLY_ORDER plus one additional + * for pageblock size for THP if configured. + */ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define NR_PCP_THP 1 +#else +#define NR_PCP_THP 0 +#endif +#define NR_PCP_LISTS (MIGRATE_PCPTYPES * (PAGE_ALLOC_COSTLY_ORDER + 1 + NR_PCP_THP)) + +/* + * Shift to encode migratetype and order in the same integer, with order + * in the least significant bits. + */ +#define NR_PCP_ORDER_WIDTH 8 +#define NR_PCP_ORDER_MASK ((1<<NR_PCP_ORDER_WIDTH) - 1) + #define min_wmark_pages(z) (z->_watermark[WMARK_MIN] + z->watermark_boost) #define low_wmark_pages(z) (z->_watermark[WMARK_LOW] + z->watermark_boost) #define high_wmark_pages(z) (z->_watermark[WMARK_HIGH] + z->watermark_boost) @@ -349,7 +367,7 @@ struct per_cpu_pages { #endif /* Lists of pages, one per migrate type stored on the pcp-lists */ - struct list_head lists[MIGRATE_PCPTYPES]; + struct list_head lists[NR_PCP_LISTS]; }; struct per_cpu_zonestat { --- a/mm/internal.h~mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists +++ a/mm/internal.h @@ -203,7 +203,7 @@ extern void post_alloc_hook(struct page gfp_t gfp_flags); extern int user_min_free_kbytes; -extern void free_unref_page(struct page *page); +extern void free_unref_page(struct page *page, unsigned int order); extern void free_unref_page_list(struct list_head *list); extern void zone_pcp_update(struct zone *zone, int cpu_online); --- a/mm/page_alloc.c~mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists +++ a/mm/page_alloc.c @@ -674,10 +674,53 @@ out: add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); } +static inline unsigned int order_to_pindex(int migratetype, int order) +{ + int base = order; + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + if (order > PAGE_ALLOC_COSTLY_ORDER) { + VM_BUG_ON(order != pageblock_order); + base = PAGE_ALLOC_COSTLY_ORDER + 1; + } +#else + VM_BUG_ON(order > PAGE_ALLOC_COSTLY_ORDER); +#endif + + return (MIGRATE_PCPTYPES * base) + migratetype; +} + +static inline int pindex_to_order(unsigned int pindex) +{ + int order = pindex / MIGRATE_PCPTYPES; + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + if (order > PAGE_ALLOC_COSTLY_ORDER) { + order = pageblock_order; + VM_BUG_ON(order != pageblock_order); + } +#else + VM_BUG_ON(order > PAGE_ALLOC_COSTLY_ORDER); +#endif + + return order; +} + +static inline bool pcp_allowed_order(unsigned int order) +{ + if (order <= PAGE_ALLOC_COSTLY_ORDER) + return true; +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + if (order == pageblock_order) + return true; +#endif + return false; +} + static inline void free_the_page(struct page *page, unsigned int order) { - if (order == 0) /* Via pcp? */ - free_unref_page(page); + if (pcp_allowed_order(order)) /* Via pcp? */ + free_unref_page(page, order); else __free_pages_ok(page, order, FPI_NONE); } @@ -700,7 +743,7 @@ static inline void free_the_page(struct void free_compound_page(struct page *page) { mem_cgroup_uncharge(page); - __free_pages_ok(page, compound_order(page), FPI_NONE); + free_the_page(page, compound_order(page)); } void prep_compound_page(struct page *page, unsigned int order) @@ -1350,9 +1393,9 @@ static __always_inline bool free_pages_p * to pcp lists. With debug_pagealloc also enabled, they are also rechecked when * moved from pcp lists to free lists. */ -static bool free_pcp_prepare(struct page *page) +static bool free_pcp_prepare(struct page *page, unsigned int order) { - return free_pages_prepare(page, 0, true, FPI_NONE); + return free_pages_prepare(page, order, true, FPI_NONE); } static bool bulkfree_pcp_prepare(struct page *page) @@ -1369,12 +1412,12 @@ static bool bulkfree_pcp_prepare(struct * debug_pagealloc enabled, they are checked also immediately when being freed * to the pcp lists. */ -static bool free_pcp_prepare(struct page *page) +static bool free_pcp_prepare(struct page *page, unsigned int order) { if (debug_pagealloc_enabled_static()) - return free_pages_prepare(page, 0, true, FPI_NONE); + return free_pages_prepare(page, order, true, FPI_NONE); else - return free_pages_prepare(page, 0, false, FPI_NONE); + return free_pages_prepare(page, order, false, FPI_NONE); } static bool bulkfree_pcp_prepare(struct page *page) @@ -1406,8 +1449,10 @@ static inline void prefetch_buddy(struct static void free_pcppages_bulk(struct zone *zone, int count, struct per_cpu_pages *pcp) { - int migratetype = 0; + int pindex = 0; int batch_free = 0; + int nr_freed = 0; + unsigned int order; int prefetch_nr = READ_ONCE(pcp->batch); bool isolated_pageblocks; struct page *page, *tmp; @@ -1418,7 +1463,7 @@ static void free_pcppages_bulk(struct zo * below while (list_empty(list)) loop. */ count = min(pcp->count, count); - while (count) { + while (count > 0) { struct list_head *list; /* @@ -1430,24 +1475,31 @@ static void free_pcppages_bulk(struct zo */ do { batch_free++; - if (++migratetype == MIGRATE_PCPTYPES) - migratetype = 0; - list = &pcp->lists[migratetype]; + if (++pindex == NR_PCP_LISTS) + pindex = 0; + list = &pcp->lists[pindex]; } while (list_empty(list)); /* This is the only non-empty list. Free them all. */ - if (batch_free == MIGRATE_PCPTYPES) + if (batch_free == NR_PCP_LISTS) batch_free = count; + order = pindex_to_order(pindex); + BUILD_BUG_ON(MAX_ORDER >= (1<<NR_PCP_ORDER_WIDTH)); do { page = list_last_entry(list, struct page, lru); /* must delete to avoid corrupting pcp list */ list_del(&page->lru); - pcp->count--; + nr_freed += 1 << order; + count -= 1 << order; if (bulkfree_pcp_prepare(page)) continue; + /* Encode order with the migratetype */ + page->index <<= NR_PCP_ORDER_WIDTH; + page->index |= order; + list_add_tail(&page->lru, &head); /* @@ -1463,8 +1515,9 @@ static void free_pcppages_bulk(struct zo prefetch_buddy(page); prefetch_nr--; } - } while (--count && --batch_free && !list_empty(list)); + } while (count > 0 && --batch_free && !list_empty(list)); } + pcp->count -= nr_freed; /* * local_lock_irq held so equivalent to spin_lock_irqsave for @@ -1479,14 +1532,19 @@ static void free_pcppages_bulk(struct zo */ list_for_each_entry_safe(page, tmp, &head, lru) { int mt = get_pcppage_migratetype(page); + + /* mt has been encoded with the order (see above) */ + order = mt & NR_PCP_ORDER_MASK; + mt >>= NR_PCP_ORDER_WIDTH; + /* MIGRATE_ISOLATE page should not go to pcplists */ VM_BUG_ON_PAGE(is_migrate_isolate(mt), page); /* Pageblock could have been isolated meanwhile */ if (unlikely(isolated_pageblocks)) mt = get_pageblock_migratetype(page); - __free_one_page(page, page_to_pfn(page), zone, 0, mt, FPI_NONE); - trace_mm_page_pcpu_drain(page, 0, mt); + __free_one_page(page, page_to_pfn(page), zone, order, mt, FPI_NONE); + trace_mm_page_pcpu_drain(page, order, mt); } spin_unlock(&zone->lock); } @@ -3263,11 +3321,12 @@ void mark_free_pages(struct zone *zone) } #endif /* CONFIG_PM */ -static bool free_unref_page_prepare(struct page *page, unsigned long pfn) +static bool free_unref_page_prepare(struct page *page, unsigned long pfn, + unsigned int order) { int migratetype; - if (!free_pcp_prepare(page)) + if (!free_pcp_prepare(page, order)) return false; migratetype = get_pfnblock_migratetype(page, pfn); @@ -3317,16 +3376,18 @@ static int nr_pcp_high(struct per_cpu_pa } static void free_unref_page_commit(struct page *page, unsigned long pfn, - int migratetype) + int migratetype, unsigned int order) { struct zone *zone = page_zone(page); struct per_cpu_pages *pcp; int high; + int pindex; __count_vm_event(PGFREE); pcp = this_cpu_ptr(zone->per_cpu_pageset); - list_add(&page->lru, &pcp->lists[migratetype]); - pcp->count++; + pindex = order_to_pindex(migratetype, order); + list_add(&page->lru, &pcp->lists[pindex]); + pcp->count += 1 << order; high = nr_pcp_high(pcp, zone); if (pcp->count >= high) { int batch = READ_ONCE(pcp->batch); @@ -3336,15 +3397,15 @@ static void free_unref_page_commit(struc } /* - * Free a 0-order page + * Free a pcp page */ -void free_unref_page(struct page *page) +void free_unref_page(struct page *page, unsigned int order) { unsigned long flags; unsigned long pfn = page_to_pfn(page); int migratetype; - if (!free_unref_page_prepare(page, pfn)) + if (!free_unref_page_prepare(page, pfn, order)) return; /* @@ -3357,14 +3418,14 @@ void free_unref_page(struct page *page) migratetype = get_pcppage_migratetype(page); if (unlikely(migratetype >= MIGRATE_PCPTYPES)) { if (unlikely(is_migrate_isolate(migratetype))) { - free_one_page(page_zone(page), page, pfn, 0, migratetype, FPI_NONE); + free_one_page(page_zone(page), page, pfn, order, migratetype, FPI_NONE); return; } migratetype = MIGRATE_MOVABLE; } local_lock_irqsave(&pagesets.lock, flags); - free_unref_page_commit(page, pfn, migratetype); + free_unref_page_commit(page, pfn, migratetype, order); local_unlock_irqrestore(&pagesets.lock, flags); } @@ -3381,7 +3442,7 @@ void free_unref_page_list(struct list_he /* Prepare pages for freeing */ list_for_each_entry_safe(page, next, list, lru) { pfn = page_to_pfn(page); - if (!free_unref_page_prepare(page, pfn)) + if (!free_unref_page_prepare(page, pfn, 0)) list_del(&page->lru); /* @@ -3413,7 +3474,7 @@ void free_unref_page_list(struct list_he set_page_private(page, 0); migratetype = get_pcppage_migratetype(page); trace_mm_page_free_batched(page); - free_unref_page_commit(page, pfn, migratetype); + free_unref_page_commit(page, pfn, migratetype, 0); /* * Guard against excessive IRQ disabled times when we get @@ -3549,7 +3610,8 @@ static inline void zone_statistics(struc /* Remove page from the per-cpu list, caller must protect the list */ static inline -struct page *__rmqueue_pcplist(struct zone *zone, int migratetype, +struct page *__rmqueue_pcplist(struct zone *zone, unsigned int order, + int migratetype, unsigned int alloc_flags, struct per_cpu_pages *pcp, struct list_head *list) @@ -3558,16 +3620,30 @@ struct page *__rmqueue_pcplist(struct zo do { if (list_empty(list)) { - pcp->count += rmqueue_bulk(zone, 0, - READ_ONCE(pcp->batch), list, + int batch = READ_ONCE(pcp->batch); + int alloced; + + /* + * Scale batch relative to order if batch implies + * free pages can be stored on the PCP. Batch can + * be 1 for small zones or for boot pagesets which + * should never store free pages as the pages may + * belong to arbitrary zones. + */ + if (batch > 1) + batch = max(batch >> order, 2); + alloced = rmqueue_bulk(zone, order, + batch, list, migratetype, alloc_flags); + + pcp->count += alloced << order; if (unlikely(list_empty(list))) return NULL; } page = list_first_entry(list, struct page, lru); list_del(&page->lru); - pcp->count--; + pcp->count -= 1 << order; } while (check_new_pcp(page)); return page; @@ -3575,8 +3651,9 @@ struct page *__rmqueue_pcplist(struct zo /* Lock and remove page from the per-cpu list */ static struct page *rmqueue_pcplist(struct zone *preferred_zone, - struct zone *zone, gfp_t gfp_flags, - int migratetype, unsigned int alloc_flags) + struct zone *zone, unsigned int order, + gfp_t gfp_flags, int migratetype, + unsigned int alloc_flags) { struct per_cpu_pages *pcp; struct list_head *list; @@ -3592,8 +3669,8 @@ static struct page *rmqueue_pcplist(stru */ pcp = this_cpu_ptr(zone->per_cpu_pageset); pcp->free_factor >>= 1; - list = &pcp->lists[migratetype]; - page = __rmqueue_pcplist(zone, migratetype, alloc_flags, pcp, list); + list = &pcp->lists[order_to_pindex(migratetype, order)]; + page = __rmqueue_pcplist(zone, order, migratetype, alloc_flags, pcp, list); local_unlock_irqrestore(&pagesets.lock, flags); if (page) { __count_zid_vm_events(PGALLOC, page_zonenum(page), 1); @@ -3614,15 +3691,15 @@ struct page *rmqueue(struct zone *prefer unsigned long flags; struct page *page; - if (likely(order == 0)) { + if (likely(pcp_allowed_order(order))) { /* * MIGRATE_MOVABLE pcplist could have the pages on CMA area and * we need to skip it when CMA area isn't allowed. */ if (!IS_ENABLED(CONFIG_CMA) || alloc_flags & ALLOC_CMA || migratetype != MIGRATE_MOVABLE) { - page = rmqueue_pcplist(preferred_zone, zone, gfp_flags, - migratetype, alloc_flags); + page = rmqueue_pcplist(preferred_zone, zone, order, + gfp_flags, migratetype, alloc_flags); goto out; } } @@ -5201,7 +5278,7 @@ unsigned long __alloc_pages_bulk(gfp_t g /* Attempt the batch allocation */ local_lock_irqsave(&pagesets.lock, flags); pcp = this_cpu_ptr(zone->per_cpu_pageset); - pcp_list = &pcp->lists[ac.migratetype]; + pcp_list = &pcp->lists[order_to_pindex(ac.migratetype, 0)]; while (nr_populated < nr_pages) { @@ -5211,7 +5288,7 @@ unsigned long __alloc_pages_bulk(gfp_t g continue; } - page = __rmqueue_pcplist(zone, ac.migratetype, alloc_flags, + page = __rmqueue_pcplist(zone, 0, ac.migratetype, alloc_flags, pcp, pcp_list); if (unlikely(!page)) { /* Try and get at least one page */ @@ -6778,13 +6855,13 @@ static void pageset_update(struct per_cp static void per_cpu_pages_init(struct per_cpu_pages *pcp, struct per_cpu_zonestat *pzstats) { - int migratetype; + int pindex; memset(pcp, 0, sizeof(*pcp)); memset(pzstats, 0, sizeof(*pzstats)); - for (migratetype = 0; migratetype < MIGRATE_PCPTYPES; migratetype++) - INIT_LIST_HEAD(&pcp->lists[migratetype]); + for (pindex = 0; pindex < NR_PCP_LISTS; pindex++) + INIT_LIST_HEAD(&pcp->lists[pindex]); /* * Set batch and high values safe for a boot pageset. A true percpu --- a/mm/swap.c~mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists +++ a/mm/swap.c @@ -95,7 +95,7 @@ static void __put_single_page(struct pag { __page_cache_release(page); mem_cgroup_uncharge(page); - free_unref_page(page); + free_unref_page(page, 0); } static void __put_compound_page(struct page *page) _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 190/192] mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes 2021-06-29 2:32 incoming Andrew Morton ` (188 preceding siblings ...) 2021-06-29 2:43 ` [patch 189/192] mm/page_alloc: allow high-order pages to be stored on the per-cpu lists Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 2021-06-29 2:43 ` [patch 191/192] mm,hwpoison: send SIGBUS with error virutal address Andrew Morton 2021-06-29 2:43 ` [patch 192/192] mm,hwpoison: make get_hwpoison_page() call get_any_page() Andrew Morton 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, dave.hansen, feng.tang, hdanton, linux-mm, mgorman, mhocko, mm-commits, torvalds, vbabka From: Mel Gorman <mgorman@techsingularity.net> Subject: mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes Dave Hansen reported the following about Feng Tang's tests on a machine with persistent memory onlined as a DRAM-like device. Feng Tang tossed these on a "Cascade Lake" system with 96 threads and ~512G of persistent memory and 128G of DRAM. The PMEM is in "volatile use" mode and being managed via the buddy just like the normal RAM. The PMEM zones are big ones: present 65011712 = 248 G high 134595 = 525 M The PMEM nodes, of course, don't have any CPUs in them. With your series, the pcp->high value per-cpu is 69584 pages or about 270MB per CPU. Scaled up by the 96 CPU threads, that's ~26GB of worst-case memory in the pcps per zone, or roughly 10% of the size of the zone. This should not cause a problem as such although it could trigger reclaim due to pages being stored on per-cpu lists for CPUs remote to a node. It is not possible to treat cpuless nodes exactly the same as normal nodes but the worst-case scenario can be mitigated by splitting pcp->high across all online CPUs for cpuless memory nodes. Link: https://lkml.kernel.org/r/20210616110743.GK30378@techsingularity.net Suggested-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Hillf Danton <hdanton@sina.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: "Tang, Feng" <feng.tang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/page_alloc.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/mm/page_alloc.c~mm-page_alloc-split-pcp-high-across-all-online-cpus-for-cpuless-nodes +++ a/mm/page_alloc.c @@ -6790,7 +6790,7 @@ static int zone_highsize(struct zone *zo { #ifdef CONFIG_MMU int high; - int nr_local_cpus; + int nr_split_cpus; unsigned long total_pages; if (!percpu_pagelist_high_fraction) { @@ -6813,10 +6813,14 @@ static int zone_highsize(struct zone *zo * Split the high value across all online CPUs local to the zone. Note * that early in boot that CPUs may not be online yet and that during * CPU hotplug that the cpumask is not yet updated when a CPU is being - * onlined. + * onlined. For memory nodes that have no CPUs, split pcp->high across + * all online CPUs to mitigate the risk that reclaim is triggered + * prematurely due to pages stored on pcp lists. */ - nr_local_cpus = max(1U, cpumask_weight(cpumask_of_node(zone_to_nid(zone)))) + cpu_online; - high = total_pages / nr_local_cpus; + nr_split_cpus = cpumask_weight(cpumask_of_node(zone_to_nid(zone))) + cpu_online; + if (!nr_split_cpus) + nr_split_cpus = num_online_cpus(); + high = total_pages / nr_split_cpus; /* * Ensure high is at least batch*4. The multiple is based on the _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 191/192] mm,hwpoison: send SIGBUS with error virutal address 2021-06-29 2:32 incoming Andrew Morton ` (189 preceding siblings ...) 2021-06-29 2:43 ` [patch 190/192] mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 2021-06-29 2:43 ` [patch 192/192] mm,hwpoison: make get_hwpoison_page() call get_any_page() Andrew Morton 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, bp, bp, david, juew, linux-mm, luto, mm-commits, naoya.horiguchi, osalvador, tony.luck, torvalds, yaoaili From: Naoya Horiguchi <naoya.horiguchi@nec.com> Subject: mm,hwpoison: send SIGBUS with error virutal address Now an action required MCE in already hwpoisoned address surely sends a SIGBUS to current process, but the SIGBUS doesn't convey error virtual address. That's not optimal for hwpoison-aware applications. To fix the issue, make memory_failure() call kill_accessing_process(), that does pagetable walk to find the error virtual address. It could find multiple virtual addresses for the same error page, and it seems hard to tell which virtual address is correct one. But that's rare and sending incorrect virtual address could be better than no address. So let's report the first found virtual address for now. [naoya.horiguchi@nec.com: fix walk_page_range() return] Link: https://lkml.kernel.org/r/20210603051055.GA244241@hori.linux.bs1.fc.nec.co.jp Link: https://lkml.kernel.org/r/20210521030156.2612074-4-nao.horiguchi@gmail.com Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Aili Yao <yaoaili@kingsoft.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: David Hildenbrand <david@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Jue Wang <juew@google.com> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/x86/kernel/cpu/mce/core.c | 13 ++ include/linux/swapops.h | 5 + mm/memory-failure.c | 150 ++++++++++++++++++++++++++++++- 3 files changed, 165 insertions(+), 3 deletions(-) --- a/arch/x86/kernel/cpu/mce/core.c~mmhwpoison-send-sigbus-with-error-virutal-address +++ a/arch/x86/kernel/cpu/mce/core.c @@ -1257,19 +1257,28 @@ static void kill_me_maybe(struct callbac { struct task_struct *p = container_of(cb, struct task_struct, mce_kill_me); int flags = MF_ACTION_REQUIRED; + int ret; pr_err("Uncorrected hardware memory error in user-access at %llx", p->mce_addr); if (!p->mce_ripv) flags |= MF_MUST_KILL; - if (!memory_failure(p->mce_addr >> PAGE_SHIFT, flags) && - !(p->mce_kflags & MCE_IN_KERNEL_COPYIN)) { + ret = memory_failure(p->mce_addr >> PAGE_SHIFT, flags); + if (!ret && !(p->mce_kflags & MCE_IN_KERNEL_COPYIN)) { set_mce_nospec(p->mce_addr >> PAGE_SHIFT, p->mce_whole_page); sync_core(); return; } + /* + * -EHWPOISON from memory_failure() means that it already sent SIGBUS + * to the current process with the proper error info, so no need to + * send SIGBUS here again. + */ + if (ret == -EHWPOISON) + return; + if (p->mce_vaddr != (void __user *)-1l) { force_sig_mceerr(BUS_MCEERR_AR, p->mce_vaddr, PAGE_SHIFT); } else { --- a/include/linux/swapops.h~mmhwpoison-send-sigbus-with-error-virutal-address +++ a/include/linux/swapops.h @@ -330,6 +330,11 @@ static inline int is_hwpoison_entry(swp_ return swp_type(entry) == SWP_HWPOISON; } +static inline unsigned long hwpoison_entry_to_pfn(swp_entry_t entry) +{ + return swp_offset(entry); +} + static inline void num_poisoned_pages_inc(void) { atomic_long_inc(&num_poisoned_pages); --- a/mm/memory-failure.c~mmhwpoison-send-sigbus-with-error-virutal-address +++ a/mm/memory-failure.c @@ -56,6 +56,7 @@ #include <linux/kfifo.h> #include <linux/ratelimit.h> #include <linux/page-isolation.h> +#include <linux/pagewalk.h> #include "internal.h" #include "ras/ras_event.h" @@ -554,6 +555,148 @@ static void collect_procs(struct page *p collect_procs_file(page, tokill, force_early); } +struct hwp_walk { + struct to_kill tk; + unsigned long pfn; + int flags; +}; + +static void set_to_kill(struct to_kill *tk, unsigned long addr, short shift) +{ + tk->addr = addr; + tk->size_shift = shift; +} + +static int check_hwpoisoned_entry(pte_t pte, unsigned long addr, short shift, + unsigned long poisoned_pfn, struct to_kill *tk) +{ + unsigned long pfn = 0; + + if (pte_present(pte)) { + pfn = pte_pfn(pte); + } else { + swp_entry_t swp = pte_to_swp_entry(pte); + + if (is_hwpoison_entry(swp)) + pfn = hwpoison_entry_to_pfn(swp); + } + + if (!pfn || pfn != poisoned_pfn) + return 0; + + set_to_kill(tk, addr, shift); + return 1; +} + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr, + struct hwp_walk *hwp) +{ + pmd_t pmd = *pmdp; + unsigned long pfn; + unsigned long hwpoison_vaddr; + + if (!pmd_present(pmd)) + return 0; + pfn = pmd_pfn(pmd); + if (pfn <= hwp->pfn && hwp->pfn < pfn + HPAGE_PMD_NR) { + hwpoison_vaddr = addr + ((hwp->pfn - pfn) << PAGE_SHIFT); + set_to_kill(&hwp->tk, hwpoison_vaddr, PAGE_SHIFT); + return 1; + } + return 0; +} +#else +static int check_hwpoisoned_pmd_entry(pmd_t *pmdp, unsigned long addr, + struct hwp_walk *hwp) +{ + return 0; +} +#endif + +static int hwpoison_pte_range(pmd_t *pmdp, unsigned long addr, + unsigned long end, struct mm_walk *walk) +{ + struct hwp_walk *hwp = (struct hwp_walk *)walk->private; + int ret = 0; + pte_t *ptep; + spinlock_t *ptl; + + ptl = pmd_trans_huge_lock(pmdp, walk->vma); + if (ptl) { + ret = check_hwpoisoned_pmd_entry(pmdp, addr, hwp); + spin_unlock(ptl); + goto out; + } + + if (pmd_trans_unstable(pmdp)) + goto out; + + ptep = pte_offset_map_lock(walk->vma->vm_mm, pmdp, addr, &ptl); + for (; addr != end; ptep++, addr += PAGE_SIZE) { + ret = check_hwpoisoned_entry(*ptep, addr, PAGE_SHIFT, + hwp->pfn, &hwp->tk); + if (ret == 1) + break; + } + pte_unmap_unlock(ptep - 1, ptl); +out: + cond_resched(); + return ret; +} + +#ifdef CONFIG_HUGETLB_PAGE +static int hwpoison_hugetlb_range(pte_t *ptep, unsigned long hmask, + unsigned long addr, unsigned long end, + struct mm_walk *walk) +{ + struct hwp_walk *hwp = (struct hwp_walk *)walk->private; + pte_t pte = huge_ptep_get(ptep); + struct hstate *h = hstate_vma(walk->vma); + + return check_hwpoisoned_entry(pte, addr, huge_page_shift(h), + hwp->pfn, &hwp->tk); +} +#else +#define hwpoison_hugetlb_range NULL +#endif + +static struct mm_walk_ops hwp_walk_ops = { + .pmd_entry = hwpoison_pte_range, + .hugetlb_entry = hwpoison_hugetlb_range, +}; + +/* + * Sends SIGBUS to the current process with error info. + * + * This function is intended to handle "Action Required" MCEs on already + * hardware poisoned pages. They could happen, for example, when + * memory_failure() failed to unmap the error page at the first call, or + * when multiple local machine checks happened on different CPUs. + * + * MCE handler currently has no easy access to the error virtual address, + * so this function walks page table to find it. The returned virtual address + * is proper in most cases, but it could be wrong when the application + * process has multiple entries mapping the error page. + */ +static int kill_accessing_process(struct task_struct *p, unsigned long pfn, + int flags) +{ + int ret; + struct hwp_walk priv = { + .pfn = pfn, + }; + priv.tk.tsk = p; + + mmap_read_lock(p->mm); + ret = walk_page_range(p->mm, 0, TASK_SIZE, &hwp_walk_ops, + (void *)&priv); + if (ret == 1 && priv.tk.addr) + kill_proc(&priv.tk, pfn, flags); + mmap_read_unlock(p->mm); + return ret ? -EFAULT : -EHWPOISON; +} + static const char *action_name[] = { [MF_IGNORED] = "Ignored", [MF_FAILED] = "Failed", @@ -1267,7 +1410,10 @@ static int memory_failure_hugetlb(unsign if (TestSetPageHWPoison(head)) { pr_err("Memory failure: %#lx: already hardware poisoned\n", pfn); - return -EHWPOISON; + res = -EHWPOISON; + if (flags & MF_ACTION_REQUIRED) + res = kill_accessing_process(current, page_to_pfn(head), flags); + return res; } num_poisoned_pages_inc(); @@ -1476,6 +1622,8 @@ try_again: pr_err("Memory failure: %#lx: already hardware poisoned\n", pfn); res = -EHWPOISON; + if (flags & MF_ACTION_REQUIRED) + res = kill_accessing_process(current, pfn, flags); goto unlock_mutex; } _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* [patch 192/192] mm,hwpoison: make get_hwpoison_page() call get_any_page() 2021-06-29 2:32 incoming Andrew Morton ` (190 preceding siblings ...) 2021-06-29 2:43 ` [patch 191/192] mm,hwpoison: send SIGBUS with error virutal address Andrew Morton @ 2021-06-29 2:43 ` Andrew Morton 191 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-29 2:43 UTC (permalink / raw) To: akpm, linux-mm, mhocko, mike.kravetz, mm-commits, naoya.horiguchi, osalvador, songmuchun, tony.luck, torvalds From: Naoya Horiguchi <naoya.horiguchi@nec.com> Subject: mm,hwpoison: make get_hwpoison_page() call get_any_page() __get_hwpoison_page() could fail to grab refcount by some race condition, so it's helpful if we can handle it by retrying. We already have retry logic, so make get_hwpoison_page() call get_any_page() when called from memory_failure(). As a result, get_hwpoison_page() can return negative values (i.e. error code), so some callers are also changed to handle error cases. soft_offline_page() does nothing for -EBUSY because that's enough and users in userspace can easily handle it. unpoison_memory() is also unchanged because it's broken and need thorough fixes (will be done later). Link: https://lkml.kernel.org/r/20210603233632.2964832-3-nao.horiguchi@gmail.com Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/hugetlb.c | 2 mm/memory-failure.c | 194 +++++++++++++++++++++++------------------- 2 files changed, 111 insertions(+), 85 deletions(-) --- a/mm/hugetlb.c~mmhwpoison-make-get_hwpoison_page-call-get_any_page +++ a/mm/hugetlb.c @@ -5938,6 +5938,8 @@ int get_hwpoison_huge_page(struct page * *hugetlb = true; if (HPageFreed(page) || HPageMigratable(page)) ret = get_page_unless_zero(page); + else + ret = -EBUSY; } spin_unlock_irq(&hugetlb_lock); return ret; --- a/mm/memory-failure.c~mmhwpoison-make-get_hwpoison_page-call-get_any_page +++ a/mm/memory-failure.c @@ -1117,13 +1117,6 @@ static inline bool HWPoisonHandlable(str return PageLRU(page) || __PageMovable(page); } -/** - * __get_hwpoison_page() - Get refcount for memory error handling: - * @page: raw error page (hit by memory error) - * - * Return: return 0 if failed to grab the refcount, otherwise true (some - * non-zero value.) - */ static int __get_hwpoison_page(struct page *page) { struct page *head = compound_head(page); @@ -1168,15 +1161,6 @@ static int __get_hwpoison_page(struct pa return 0; } -/* - * Safely get reference count of an arbitrary page. - * - * Returns 0 for a free page, 1 for an in-use page, - * -EIO for a page-type we cannot handle and -EBUSY if we raced with an - * allocation. - * We only incremented refcount in case the page was already in-use and it - * is a known type we can handle. - */ static int get_any_page(struct page *p, unsigned long flags) { int ret = 0, pass = 0; @@ -1186,50 +1170,77 @@ static int get_any_page(struct page *p, count_increased = true; try_again: - if (!count_increased && !__get_hwpoison_page(p)) { - if (page_count(p)) { - /* We raced with an allocation, retry. */ - if (pass++ < 3) - goto try_again; - ret = -EBUSY; - } else if (!PageHuge(p) && !is_free_buddy_page(p)) { - /* We raced with put_page, retry. */ + if (!count_increased) { + ret = __get_hwpoison_page(p); + if (!ret) { + if (page_count(p)) { + /* We raced with an allocation, retry. */ + if (pass++ < 3) + goto try_again; + ret = -EBUSY; + } else if (!PageHuge(p) && !is_free_buddy_page(p)) { + /* We raced with put_page, retry. */ + if (pass++ < 3) + goto try_again; + ret = -EIO; + } + goto out; + } else if (ret == -EBUSY) { + /* We raced with freeing huge page to buddy, retry. */ if (pass++ < 3) goto try_again; - ret = -EIO; + goto out; } + } + + if (PageHuge(p) || HWPoisonHandlable(p)) { + ret = 1; } else { - if (PageHuge(p) || HWPoisonHandlable(p)) { - ret = 1; - } else { - /* - * A page we cannot handle. Check whether we can turn - * it into something we can handle. - */ - if (pass++ < 3) { - put_page(p); - shake_page(p, 1); - count_increased = false; - goto try_again; - } + /* + * A page we cannot handle. Check whether we can turn + * it into something we can handle. + */ + if (pass++ < 3) { put_page(p); - ret = -EIO; + shake_page(p, 1); + count_increased = false; + goto try_again; } + put_page(p); + ret = -EIO; } - +out: return ret; } -static int get_hwpoison_page(struct page *p, unsigned long flags, - enum mf_flags ctxt) +/** + * get_hwpoison_page() - Get refcount for memory error handling + * @p: Raw error page (hit by memory error) + * @flags: Flags controlling behavior of error handling + * + * get_hwpoison_page() takes a page refcount of an error page to handle memory + * error on it, after checking that the error page is in a well-defined state + * (defined as a page-type we can successfully handle the memor error on it, + * such as LRU page and hugetlb page). + * + * Memory error handling could be triggered at any time on any type of page, + * so it's prone to race with typical memory management lifecycle (like + * allocation and free). So to avoid such races, get_hwpoison_page() takes + * extra care for the error page's state (as done in __get_hwpoison_page()), + * and has some retry logic in get_any_page(). + * + * Return: 0 on failure, + * 1 on success for in-use pages in a well-defined state, + * -EIO for pages on which we can not handle memory errors, + * -EBUSY when get_hwpoison_page() has raced with page lifecycle + * operations like allocation and free. + */ +static int get_hwpoison_page(struct page *p, unsigned long flags) { int ret; zone_pcp_disable(page_zone(p)); - if (ctxt == MF_SOFT_OFFLINE) - ret = get_any_page(p, flags); - else - ret = __get_hwpoison_page(p); + ret = get_any_page(p, flags); zone_pcp_enable(page_zone(p)); return ret; @@ -1418,27 +1429,33 @@ static int memory_failure_hugetlb(unsign num_poisoned_pages_inc(); - if (!(flags & MF_COUNT_INCREASED) && !get_hwpoison_page(p, flags, 0)) { - /* - * Check "filter hit" and "race with other subpage." - */ - lock_page(head); - if (PageHWPoison(head)) { - if ((hwpoison_filter(p) && TestClearPageHWPoison(p)) - || (p != head && TestSetPageHWPoison(head))) { - num_poisoned_pages_dec(); - unlock_page(head); - return 0; + if (!(flags & MF_COUNT_INCREASED)) { + res = get_hwpoison_page(p, flags); + if (!res) { + /* + * Check "filter hit" and "race with other subpage." + */ + lock_page(head); + if (PageHWPoison(head)) { + if ((hwpoison_filter(p) && TestClearPageHWPoison(p)) + || (p != head && TestSetPageHWPoison(head))) { + num_poisoned_pages_dec(); + unlock_page(head); + return 0; + } } + unlock_page(head); + res = MF_FAILED; + if (!dissolve_free_huge_page(p) && take_page_off_buddy(p)) { + page_ref_inc(p); + res = MF_RECOVERED; + } + action_result(pfn, MF_MSG_FREE_HUGE, res); + return res == MF_RECOVERED ? 0 : -EBUSY; + } else if (res < 0) { + action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED); + return -EBUSY; } - unlock_page(head); - res = MF_FAILED; - if (!dissolve_free_huge_page(p) && take_page_off_buddy(p)) { - page_ref_inc(p); - res = MF_RECOVERED; - } - action_result(pfn, MF_MSG_FREE_HUGE, res); - return res == MF_RECOVERED ? 0 : -EBUSY; } lock_page(head); @@ -1641,28 +1658,35 @@ try_again: * In fact it's dangerous to directly bump up page count from 0, * that may make page_ref_freeze()/page_ref_unfreeze() mismatch. */ - if (!(flags & MF_COUNT_INCREASED) && !get_hwpoison_page(p, flags, 0)) { - if (is_free_buddy_page(p)) { - if (take_page_off_buddy(p)) { - page_ref_inc(p); - res = MF_RECOVERED; - } else { - /* We lost the race, try again */ - if (retry) { - ClearPageHWPoison(p); - num_poisoned_pages_dec(); - retry = false; - goto try_again; + if (!(flags & MF_COUNT_INCREASED)) { + res = get_hwpoison_page(p, flags); + if (!res) { + if (is_free_buddy_page(p)) { + if (take_page_off_buddy(p)) { + page_ref_inc(p); + res = MF_RECOVERED; + } else { + /* We lost the race, try again */ + if (retry) { + ClearPageHWPoison(p); + num_poisoned_pages_dec(); + retry = false; + goto try_again; + } + res = MF_FAILED; } - res = MF_FAILED; + action_result(pfn, MF_MSG_BUDDY, res); + res = res == MF_RECOVERED ? 0 : -EBUSY; + } else { + action_result(pfn, MF_MSG_KERNEL_HIGH_ORDER, MF_IGNORED); + res = -EBUSY; } - action_result(pfn, MF_MSG_BUDDY, res); - res = res == MF_RECOVERED ? 0 : -EBUSY; - } else { - action_result(pfn, MF_MSG_KERNEL_HIGH_ORDER, MF_IGNORED); + goto unlock_mutex; + } else if (res < 0) { + action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED); res = -EBUSY; + goto unlock_mutex; } - goto unlock_mutex; } if (PageTransHuge(hpage)) { @@ -1940,7 +1964,7 @@ int unpoison_memory(unsigned long pfn) return 0; } - if (!get_hwpoison_page(p, flags, 0)) { + if (!get_hwpoison_page(p, flags)) { if (TestClearPageHWPoison(p)) num_poisoned_pages_dec(); unpoison_pr_info("Unpoison: Software-unpoisoned free page %#lx\n", @@ -2156,7 +2180,7 @@ int soft_offline_page(unsigned long pfn, retry: get_online_mems(); - ret = get_hwpoison_page(page, flags, MF_SOFT_OFFLINE); + ret = get_hwpoison_page(page, flags); put_online_mems(); if (ret > 0) { _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-27 19:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-27 19:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 2 patches, based on d615b5416f8a1afeb82d13b238f8152c572d59c0. Subsystems affected by this patch series: mm/kasan mm/debug Subsystem: mm/kasan Zqiang <qiang1.zhang@intel.com>: kasan: prevent cpu_quarantine corruption when CPU offline and cache shrink occur at same time Subsystem: mm/debug Akira Yokosawa <akiyks@gmail.com>: docs: vm/page_owner: use literal blocks for param description Documentation/vm/page_owner.rst | 5 +++-- mm/kasan/quarantine.c | 7 +++++++ 2 files changed, 10 insertions(+), 2 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-21 23:35 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-21 23:35 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches 13 patches, based on b253435746d9a4a701b5f09211b9c14d3370d0da. Subsystems affected by this patch series: mm/memory-failure mm/memcg mm/userfaultfd mm/hugetlbfs mm/mremap mm/oom-kill mm/kasan kcov mm/hmm Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb() Xu Yu <xuyu@linux.alibaba.com>: mm/memory-failure.c: skip huge_zero_page in memory_failure() Subsystem: mm/memcg Shakeel Butt <shakeelb@google.com>: memcg: sync flush only if periodic flush is delayed Subsystem: mm/userfaultfd Nadav Amit <namit@vmware.com>: userfaultfd: mark uffd_wp regardless of VM_WRITE flag Subsystem: mm/hugetlbfs Christophe Leroy <christophe.leroy@csgroup.eu>: mm, hugetlb: allow for "high" userspace addresses Subsystem: mm/mremap Sidhartha Kumar <sidhartha.kumar@oracle.com>: selftest/vm: verify mmap addr in mremap_test selftest/vm: verify remap destination address in mremap_test selftest/vm: support xfail in mremap_test selftest/vm: add skip support to mremap_test Subsystem: mm/oom-kill Nico Pache <npache@redhat.com>: oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup Subsystem: mm/kasan Vincenzo Frascino <vincenzo.frascino@arm.com>: MAINTAINERS: add Vincenzo Frascino to KASAN reviewers Subsystem: kcov Aleksandr Nogikh <nogikh@google.com>: kcov: don't generate a warning on vm_insert_page()'s failure Subsystem: mm/hmm Alistair Popple <apopple@nvidia.com>: mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() MAINTAINERS | 1 fs/hugetlbfs/inode.c | 9 - include/linux/hugetlb.h | 6 + include/linux/memcontrol.h | 5 include/linux/mm.h | 8 + include/linux/sched.h | 1 include/linux/sched/mm.h | 8 + kernel/kcov.c | 7 - mm/hugetlb.c | 10 + mm/memcontrol.c | 12 ++ mm/memory-failure.c | 158 ++++++++++++++++++++++-------- mm/mmap.c | 8 - mm/mmu_notifier.c | 14 ++ mm/oom_kill.c | 54 +++++++--- mm/userfaultfd.c | 15 +- mm/workingset.c | 2 tools/testing/selftests/vm/mremap_test.c | 85 +++++++++++++++- tools/testing/selftests/vm/run_vmtests.sh | 11 +- 18 files changed, 327 insertions(+), 87 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-15 2:12 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-15 2:12 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 14 patches, based on 115acbb56978941bb7537a97dfc303da286106c1. Subsystems affected by this patch series: MAINTAINERS mm/tmpfs m/secretmem mm/kasan mm/kfence mm/pagealloc mm/zram mm/compaction mm/hugetlb binfmt mm/vmalloc mm/kmemleak Subsystem: MAINTAINERS Joe Perches <joe@perches.com>: MAINTAINERS: Broadcom internal lists aren't maintainers Subsystem: mm/tmpfs Hugh Dickins <hughd@google.com>: tmpfs: fix regressions from wider use of ZERO_PAGE Subsystem: m/secretmem Axel Rasmussen <axelrasmussen@google.com>: mm/secretmem: fix panic when growing a memfd_secret Subsystem: mm/kasan Zqiang <qiang1.zhang@intel.com>: irq_work: use kasan_record_aux_stack_noalloc() record callstack Vincenzo Frascino <vincenzo.frascino@arm.com>: kasan: fix hw tags enablement when KUNIT tests are disabled Subsystem: mm/kfence Marco Elver <elver@google.com>: mm, kfence: support kmem_dump_obj() for KFENCE objects Subsystem: mm/pagealloc Juergen Gross <jgross@suse.com>: mm, page_alloc: fix build_zonerefs_node() Subsystem: mm/zram Minchan Kim <minchan@kernel.org>: mm: fix unexpected zeroed page mapping with zram swap Subsystem: mm/compaction Charan Teja Kalla <quic_charante@quicinc.com>: mm: compaction: fix compiler warning when CONFIG_COMPACTION=n Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: do not demote poisoned hugetlb pages Subsystem: binfmt Andrew Morton <akpm@linux-foundation.org>: revert "fs/binfmt_elf: fix PT_LOAD p_align values for loaders" revert "fs/binfmt_elf: use PT_LOAD p_align values for static PIE" Subsystem: mm/vmalloc Omar Sandoval <osandov@fb.com>: mm/vmalloc: fix spinning drain_vmap_work after reading from /proc/vmcore Subsystem: mm/kmemleak Patrick Wang <patrick.wang.shcn@gmail.com>: mm: kmemleak: take a full lowmem check in kmemleak_*_phys() MAINTAINERS | 64 ++++++++++++++++++++-------------------- arch/x86/include/asm/io.h | 2 - arch/x86/kernel/crash_dump_64.c | 1 fs/binfmt_elf.c | 6 +-- include/linux/kfence.h | 24 +++++++++++++++ kernel/irq_work.c | 2 - mm/compaction.c | 10 +++--- mm/filemap.c | 6 --- mm/hugetlb.c | 17 ++++++---- mm/kasan/hw_tags.c | 5 +-- mm/kasan/kasan.h | 10 +++--- mm/kfence/core.c | 21 ------------- mm/kfence/kfence.h | 21 +++++++++++++ mm/kfence/report.c | 47 +++++++++++++++++++++++++++++ mm/kmemleak.c | 8 ++--- mm/page_alloc.c | 2 - mm/page_io.c | 54 --------------------------------- mm/secretmem.c | 17 ++++++++++ mm/shmem.c | 31 ++++++++++++------- mm/slab.c | 2 - mm/slab.h | 2 - mm/slab_common.c | 9 +++++ mm/slob.c | 2 - mm/slub.c | 2 - mm/vmalloc.c | 11 ------ 25 files changed, 207 insertions(+), 169 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-08 20:08 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-08 20:08 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 9 patches, based on d00c50b35101b862c3db270ffeba53a63a1063d9. Subsystems affected by this patch series: mm/migration mm/highmem lz4 mm/sparsemem mm/mremap mm/mempolicy mailmap mm/memcg MAINTAINERS Subsystem: mm/migration Zi Yan <ziy@nvidia.com>: mm: migrate: use thp_order instead of HPAGE_PMD_ORDER for new page allocation. Subsystem: mm/highmem Max Filippov <jcmvbkbc@gmail.com>: highmem: fix checks in __kmap_local_sched_{in,out} Subsystem: lz4 Guo Xuenan <guoxuenan@huawei.com>: lz4: fix LZ4_decompress_safe_partial read out of bound Subsystem: mm/sparsemem Waiman Long <longman@redhat.com>: mm/sparsemem: fix 'mem_section' will never be NULL gcc 12 warning Subsystem: mm/mremap Paolo Bonzini <pbonzini@redhat.com>: mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0) Subsystem: mm/mempolicy Miaohe Lin <linmiaohe@huawei.com>: mm/mempolicy: fix mpol_new leak in shared_policy_replace Subsystem: mailmap Vasily Averin <vasily.averin@linux.dev>: mailmap: update Vasily Averin's email address Subsystem: mm/memcg Andrew Morton <akpm@linux-foundation.org>: mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()" Subsystem: MAINTAINERS Tom Rix <trix@redhat.com>: MAINTAINERS: add Tom as clang reviewer .mailmap | 4 ++++ MAINTAINERS | 1 + include/linux/mmzone.h | 11 +++++++---- lib/lz4/lz4_decompress.c | 8 ++++++-- mm/highmem.c | 4 ++-- mm/list_lru.c | 6 ------ mm/mempolicy.c | 3 ++- mm/migrate.c | 2 +- mm/mremap.c | 3 +++ 9 files changed, 26 insertions(+), 16 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-01 18:27 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-01 18:27 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 16 patches, based on e8b767f5e04097aaedcd6e06e2270f9fe5282696. Subsystems affected by this patch series: mm/madvise ofs2 nilfs2 mm/mlock mm/mfence mailmap mm/memory-failure mm/kasan mm/debug mm/kmemleak mm/damon Subsystem: mm/madvise Charan Teja Kalla <quic_charante@quicinc.com>: Revert "mm: madvise: skip unmapped vma holes passed to process_madvise" Subsystem: ofs2 Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: fix crash when mount with quota enabled Subsystem: nilfs2 Ryusuke Konishi <konishi.ryusuke@gmail.com>: Patch series "nilfs2 lockdep warning fixes": nilfs2: fix lockdep warnings in page operations for btree nodes nilfs2: fix lockdep warnings during disk space reclamation nilfs2: get rid of nilfs_mapping_init() Subsystem: mm/mlock Hugh Dickins <hughd@google.com>: mm/munlock: add lru_add_drain() to fix memcg_stat_test mm/munlock: update Documentation/vm/unevictable-lru.rst Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/munlock: protect the per-CPU pagevec by a local_lock_t Subsystem: mm/kfence Muchun Song <songmuchun@bytedance.com>: mm: kfence: fix objcgs vector allocation Subsystem: mailmap Kirill Tkhai <kirill.tkhai@openvz.org>: mailmap: update Kirill's email Subsystem: mm/memory-failure Rik van Riel <riel@surriel.com>: mm,hwpoison: unmap poisoned page before invalidation Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: mm, kasan: fix __GFP_BITS_SHIFT definition breaking LOCKDEP Subsystem: mm/debug Yinan Zhang <zhangyinan2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: remove -c option doc/vm/page_owner.rst: remove content related to -c option Subsystem: mm/kmemleak Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: mm/kmemleak: reset tag when compare object pointer Subsystem: mm/damon Jonghyeon Kim <tome01@ajou.ac.kr>: mm/damon: prevent activated scheme from sleeping by deactivated schemes .mailmap | 1 Documentation/vm/page_owner.rst | 1 Documentation/vm/unevictable-lru.rst | 473 +++++++++++++++-------------------- fs/nilfs2/btnode.c | 23 + fs/nilfs2/btnode.h | 1 fs/nilfs2/btree.c | 27 + fs/nilfs2/dat.c | 4 fs/nilfs2/gcinode.c | 7 fs/nilfs2/inode.c | 167 +++++++++++- fs/nilfs2/mdt.c | 45 ++- fs/nilfs2/mdt.h | 6 fs/nilfs2/nilfs.h | 16 - fs/nilfs2/page.c | 16 - fs/nilfs2/page.h | 1 fs/nilfs2/segment.c | 9 fs/nilfs2/super.c | 5 fs/ocfs2/quota_global.c | 23 - fs/ocfs2/quota_local.c | 2 include/linux/gfp.h | 4 mm/damon/core.c | 5 mm/gup.c | 10 mm/internal.h | 6 mm/kfence/core.c | 11 mm/kfence/kfence.h | 3 mm/kmemleak.c | 9 mm/madvise.c | 9 mm/memory.c | 12 mm/migrate.c | 2 mm/mlock.c | 46 ++- mm/page_alloc.c | 1 mm/rmap.c | 4 mm/swap.c | 4 tools/vm/page_owner_sort.c | 6 33 files changed, 560 insertions(+), 399 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-04-01 18:20 Andrew Morton 2022-04-01 18:27 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2022-04-01 18:20 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 16 patches, based on e8b767f5e04097aaedcd6e06e2270f9fe5282696. Subsystems affected by this patch series: mm/madvise ofs2 nilfs2 mm/mlock mm/mfence mailmap mm/memory-failure mm/kasan mm/debug mm/kmemleak mm/damon Subsystem: mm/madvise Charan Teja Kalla <quic_charante@quicinc.com>: Revert "mm: madvise: skip unmapped vma holes passed to process_madvise" Subsystem: ofs2 Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: fix crash when mount with quota enabled Subsystem: nilfs2 Ryusuke Konishi <konishi.ryusuke@gmail.com>: Patch series "nilfs2 lockdep warning fixes": nilfs2: fix lockdep warnings in page operations for btree nodes nilfs2: fix lockdep warnings during disk space reclamation nilfs2: get rid of nilfs_mapping_init() Subsystem: mm/mlock Hugh Dickins <hughd@google.com>: mm/munlock: add lru_add_drain() to fix memcg_stat_test mm/munlock: update Documentation/vm/unevictable-lru.rst Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/munlock: protect the per-CPU pagevec by a local_lock_t Subsystem: mm/kfence Muchun Song <songmuchun@bytedance.com>: mm: kfence: fix objcgs vector allocation Subsystem: mailmap Kirill Tkhai <kirill.tkhai@openvz.org>: mailmap: update Kirill's email Subsystem: mm/memory-failure Rik van Riel <riel@surriel.com>: mm,hwpoison: unmap poisoned page before invalidation Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: mm, kasan: fix __GFP_BITS_SHIFT definition breaking LOCKDEP Subsystem: mm/debug Yinan Zhang <zhangyinan2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: remove -c option doc/vm/page_owner.rst: remove content related to -c option Subsystem: mm/kmemleak Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: mm/kmemleak: reset tag when compare object pointer Subsystem: mm/damon Jonghyeon Kim <tome01@ajou.ac.kr>: mm/damon: prevent activated scheme from sleeping by deactivated schemes .mailmap | 1 Documentation/vm/page_owner.rst | 1 Documentation/vm/unevictable-lru.rst | 473 +++++++++++++++-------------------- fs/nilfs2/btnode.c | 23 + fs/nilfs2/btnode.h | 1 fs/nilfs2/btree.c | 27 + fs/nilfs2/dat.c | 4 fs/nilfs2/gcinode.c | 7 fs/nilfs2/inode.c | 167 +++++++++++- fs/nilfs2/mdt.c | 45 ++- fs/nilfs2/mdt.h | 6 fs/nilfs2/nilfs.h | 16 - fs/nilfs2/page.c | 16 - fs/nilfs2/page.h | 1 fs/nilfs2/segment.c | 9 fs/nilfs2/super.c | 5 fs/ocfs2/quota_global.c | 23 - fs/ocfs2/quota_local.c | 2 include/linux/gfp.h | 4 mm/damon/core.c | 5 mm/gup.c | 10 mm/internal.h | 6 mm/kfence/core.c | 11 mm/kfence/kfence.h | 3 mm/kmemleak.c | 9 mm/madvise.c | 9 mm/memory.c | 12 mm/migrate.c | 2 mm/mlock.c | 46 ++- mm/page_alloc.c | 1 mm/rmap.c | 4 mm/swap.c | 4 tools/vm/page_owner_sort.c | 6 33 files changed, 560 insertions(+), 399 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2022-04-01 18:20 incoming Andrew Morton @ 2022-04-01 18:27 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-04-01 18:27 UTC (permalink / raw) To: Linus Torvalds, linux-mm, mm-commits, patches Argh, messed up in-reply-to. Let me redo... ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-03-25 1:07 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-03-25 1:07 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches This is the material which was staged after willystuff in linux-next. Everything applied seamlessly on your latest, all looks well. 114 patches, based on 52deda9551a01879b3562e7b41748e85c591f14c. Subsystems affected by this patch series: mm/debug mm/selftests mm/pagecache mm/thp mm/rmap mm/migration mm/kasan mm/hugetlb mm/pagemap mm/madvise selftests Subsystem: mm/debug Sean Anderson <seanga2@gmail.com>: tools/vm/page_owner_sort.c: sort by stacktrace before culling tools/vm/page_owner_sort.c: support sorting by stack trace Yinan Zhang <zhangyinan2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: add switch between culling by stacktrace and txt Chongxi Zhao <zhaochongxi2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: support sorting pid and time Shenghong Han <hanshenghong2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: two trivial fixes Yixuan Cao <caoyixuan2019@email.szu.edu.cn>: tools/vm/page_owner_sort.c: delete invalid duplicate code Shenghong Han <hanshenghong2019@email.szu.edu.cn>: Documentation/vm/page_owner.rst: update the documentation Shuah Khan <skhan@linuxfoundation.org>: Documentation/vm/page_owner.rst: fix unexpected indentation warns Waiman Long <longman@redhat.com>: Patch series "mm/page_owner: Extend page_owner to show memcg information", v4: lib/vsprintf: avoid redundant work with 0 size mm/page_owner: use scnprintf() to avoid excessive buffer overrun check mm/page_owner: print memcg information mm/page_owner: record task command name Yixuan Cao <caoyixuan2019@email.szu.edu.cn>: mm/page_owner.c: record tgid tools/vm/page_owner_sort.c: fix the instructions for use Jiajian Ye <yejiajian2018@email.szu.edu.cn>: tools/vm/page_owner_sort.c: fix comments tools/vm/page_owner_sort.c: add a security check tools/vm/page_owner_sort.c: support sorting by tgid and update documentation tools/vm/page_owner_sort: fix three trivival places tools/vm/page_owner_sort: support for sorting by task command name tools/vm/page_owner_sort.c: support for selecting by PID, TGID or task command name tools/vm/page_owner_sort.c: support for user-defined culling rules Christoph Hellwig <hch@lst.de>: mm: unexport page_init_poison Subsystem: mm/selftests "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: selftest/vm: add util.h and and move helper functions there Mike Rapoport <rppt@kernel.org>: selftest/vm: add helpers to detect PAGE_SIZE and PAGE_SHIFT Subsystem: mm/pagecache Hugh Dickins <hughd@google.com>: mm: delete __ClearPageWaiters() mm: filemap_unaccount_folio() large skip mapcount fixup Subsystem: mm/thp Hugh Dickins <hughd@google.com>: mm/thp: fix NR_FILE_MAPPED accounting in page_*_file_rmap() Subsystem: mm/rmap Subsystem: mm/migration Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/migration: Add trace events", v3: mm/migration: add trace events for THP migrations mm/migration: add trace events for base page and HugeTLB migrations Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan, vmalloc, arm64: add vmalloc tagging support for SW/HW_TAGS", v6: kasan, page_alloc: deduplicate should_skip_kasan_poison kasan, page_alloc: move tag_clear_highpage out of kernel_init_free_pages kasan, page_alloc: merge kasan_free_pages into free_pages_prepare kasan, page_alloc: simplify kasan_poison_pages call site kasan, page_alloc: init memory of skipped pages on free kasan: drop skip_kasan_poison variable in free_pages_prepare mm: clarify __GFP_ZEROTAGS comment kasan: only apply __GFP_ZEROTAGS when memory is zeroed kasan, page_alloc: refactor init checks in post_alloc_hook kasan, page_alloc: merge kasan_alloc_pages into post_alloc_hook kasan, page_alloc: combine tag_clear_highpage calls in post_alloc_hook kasan, page_alloc: move SetPageSkipKASanPoison in post_alloc_hook kasan, page_alloc: move kernel_init_free_pages in post_alloc_hook kasan, page_alloc: rework kasan_unpoison_pages call site kasan: clean up metadata byte definitions kasan: define KASAN_VMALLOC_INVALID for SW_TAGS kasan, x86, arm64, s390: rename functions for modules shadow kasan, vmalloc: drop outdated VM_KASAN comment kasan: reorder vmalloc hooks kasan: add wrappers for vmalloc hooks kasan, vmalloc: reset tags in vmalloc functions kasan, fork: reset pointer tags of vmapped stacks kasan, arm64: reset pointer tags of vmapped stacks kasan, vmalloc: add vmalloc tagging for SW_TAGS kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged kasan, vmalloc: unpoison VM_ALLOC pages after mapping kasan, mm: only define ___GFP_SKIP_KASAN_POISON with HW_TAGS kasan, page_alloc: allow skipping unpoisoning for HW_TAGS kasan, page_alloc: allow skipping memory init for HW_TAGS kasan, vmalloc: add vmalloc tagging for HW_TAGS kasan, vmalloc: only tag normal vmalloc allocations kasan, arm64: don't tag executable vmalloc allocations kasan: mark kasan_arg_stacktrace as __initdata kasan: clean up feature flags for HW_TAGS mode kasan: add kasan.vmalloc command line flag kasan: allow enabling KASAN_VMALLOC and SW/HW_TAGS arm64: select KASAN_VMALLOC for SW/HW_TAGS modes kasan: documentation updates kasan: improve vmalloc tests kasan: test: support async (again) and asymm modes for HW_TAGS tangmeng <tangmeng@uniontech.com>: mm/kasan: remove unnecessary CONFIG_KASAN option Peter Collingbourne <pcc@google.com>: kasan: update function name in comments Andrey Konovalov <andreyknvl@google.com>: kasan: print virtual mapping info in reports Patch series "kasan: report clean-ups and improvements": kasan: drop addr check from describe_object_addr kasan: more line breaks in reports kasan: rearrange stack frame info in reports kasan: improve stack frame info in reports kasan: print basic stack frame info for SW_TAGS kasan: simplify async check in end_report() kasan: simplify kasan_update_kunit_status() and call sites kasan: check CONFIG_KASAN_KUNIT_TEST instead of CONFIG_KUNIT kasan: move update_kunit_status to start_report kasan: move disable_trace_on_warning to start_report kasan: split out print_report from __kasan_report kasan: simplify kasan_find_first_bad_addr call sites kasan: restructure kasan_report kasan: merge __kasan_report into kasan_report kasan: call print_report from kasan_report_invalid_free kasan: move and simplify kasan_report_async kasan: rename kasan_access_info to kasan_report_info kasan: add comment about UACCESS regions to kasan_report kasan: respect KASAN_BIT_REPORTED in all reporting routines kasan: reorder reporting functions kasan: move and hide kasan_save_enable/restore_multi_shot kasan: disable LOCKDEP when printing reports Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: Patch series "Add hugetlb MADV_DONTNEED support", v3: mm: enable MADV_DONTNEED for hugetlb mappings selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test userfaultfd/selftests: enable hugetlb remap and remove event testing Miaohe Lin <linmiaohe@huawei.com>: mm/huge_memory: make is_transparent_hugepage() static Subsystem: mm/pagemap David Hildenbrand <david@redhat.com>: Patch series "mm: COW fixes part 1: fix the COW security issue for THP and swap", v3: mm: optimize do_wp_page() for exclusive pages in the swapcache mm: optimize do_wp_page() for fresh pages in local LRU pagevecs mm: slightly clarify KSM logic in do_swap_page() mm: streamline COW logic in do_swap_page() mm/huge_memory: streamline COW logic in do_huge_pmd_wp_page() mm/khugepaged: remove reuse_swap_page() usage mm/swapfile: remove stale reuse_swap_page() mm/huge_memory: remove stale page_trans_huge_mapcount() mm/huge_memory: remove stale locking logic from __split_huge_pmd() Hugh Dickins <hughd@google.com>: mm: warn on deleting redirtied only if accounted mm: unmap_mapping_range_tree() with i_mmap_rwsem shared Anshuman Khandual <anshuman.khandual@arm.com>: mm: generalize ARCH_HAS_FILTER_PGPROT Subsystem: mm/madvise Mauricio Faria de Oliveira <mfo@canonical.com>: mm: fix race between MADV_FREE reclaim and blkdev direct IO read Johannes Weiner <hannes@cmpxchg.org>: mm: madvise: MADV_DONTNEED_LOCKED Subsystem: selftests Muhammad Usama Anjum <usama.anjum@collabora.com>: selftests: vm: remove dependecy from internal kernel macros Kees Cook <keescook@chromium.org>: selftests: kselftest framework: provide "finished" helper Documentation/dev-tools/kasan.rst | 17 Documentation/vm/page_owner.rst | 72 ++ arch/alpha/include/uapi/asm/mman.h | 2 arch/arm64/Kconfig | 2 arch/arm64/include/asm/vmalloc.h | 6 arch/arm64/include/asm/vmap_stack.h | 5 arch/arm64/kernel/module.c | 5 arch/arm64/mm/pageattr.c | 2 arch/arm64/net/bpf_jit_comp.c | 3 arch/mips/include/uapi/asm/mman.h | 2 arch/parisc/include/uapi/asm/mman.h | 2 arch/powerpc/mm/book3s64/trace.c | 1 arch/s390/kernel/module.c | 2 arch/x86/Kconfig | 3 arch/x86/kernel/module.c | 2 arch/x86/mm/init.c | 1 arch/xtensa/include/uapi/asm/mman.h | 2 include/linux/gfp.h | 53 +- include/linux/huge_mm.h | 6 include/linux/kasan.h | 136 +++-- include/linux/mm.h | 5 include/linux/page-flags.h | 2 include/linux/pagemap.h | 3 include/linux/swap.h | 4 include/linux/vmalloc.h | 18 include/trace/events/huge_memory.h | 1 include/trace/events/migrate.h | 31 + include/trace/events/mmflags.h | 18 include/trace/events/thp.h | 27 + include/uapi/asm-generic/mman-common.h | 2 kernel/fork.c | 13 kernel/scs.c | 16 lib/Kconfig.kasan | 18 lib/test_kasan.c | 239 ++++++++- lib/vsprintf.c | 8 mm/Kconfig | 3 mm/debug.c | 1 mm/filemap.c | 63 +- mm/huge_memory.c | 109 ---- mm/kasan/Makefile | 2 mm/kasan/common.c | 4 mm/kasan/hw_tags.c | 243 +++++++--- mm/kasan/kasan.h | 76 ++- mm/kasan/report.c | 516 +++++++++++---------- mm/kasan/report_generic.c | 34 - mm/kasan/report_hw_tags.c | 1 mm/kasan/report_sw_tags.c | 16 mm/kasan/report_tags.c | 2 mm/kasan/shadow.c | 76 +-- mm/khugepaged.c | 11 mm/madvise.c | 57 +- mm/memory.c | 129 +++-- mm/memremap.c | 2 mm/migrate.c | 4 mm/page-writeback.c | 18 mm/page_alloc.c | 270 ++++++----- mm/page_owner.c | 86 ++- mm/rmap.c | 62 +- mm/swap.c | 4 mm/swapfile.c | 104 ---- mm/vmalloc.c | 167 ++++-- tools/testing/selftests/kselftest.h | 10 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 1 tools/testing/selftests/vm/gup_test.c | 3 tools/testing/selftests/vm/hugetlb-madvise.c | 410 ++++++++++++++++ tools/testing/selftests/vm/ksm_tests.c | 38 - tools/testing/selftests/vm/memfd_secret.c | 2 tools/testing/selftests/vm/run_vmtests.sh | 15 tools/testing/selftests/vm/transhuge-stress.c | 41 - tools/testing/selftests/vm/userfaultfd.c | 72 +- tools/testing/selftests/vm/util.h | 75 ++- tools/vm/page_owner_sort.c | 628 +++++++++++++++++++++----- 73 files changed, 2797 insertions(+), 1288 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-03-23 23:04 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-03-23 23:04 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches Various misc subsystems, before getting into the post-linux-next material. This is all based on v5.17. I tested applying and compiling against today's 1bc191051dca28fa6. One patch required an extra whack, all looks good. 41 patches, based on f443e374ae131c168a065ea1748feac6b2e76613. Subsystems affected by this patch series: procfs misc core-kernel lib checkpatch init pipe minix fat cgroups kexec kdump taskstats panic kcov resource ubsan Subsystem: procfs Hao Lee <haolee.swjtu@gmail.com>: proc: alloc PATH_MAX bytes for /proc/${pid}/fd/ symlinks David Hildenbrand <david@redhat.com>: proc/vmcore: fix possible deadlock on concurrent mmap and read Yang Li <yang.lee@linux.alibaba.com>: proc/vmcore: fix vmcore_alloc_buf() kernel-doc comment Subsystem: misc Bjorn Helgaas <bhelgaas@google.com>: linux/types.h: remove unnecessary __bitwise__ Documentation/sparse: add hints about __CHECKER__ Subsystem: core-kernel Miaohe Lin <linmiaohe@huawei.com>: kernel/ksysfs.c: use helper macro __ATTR_RW Subsystem: lib Kees Cook <keescook@chromium.org>: Kconfig.debug: make DEBUG_INFO selectable from a choice Rasmus Villemoes <linux@rasmusvillemoes.dk>: include: drop pointless __compiler_offsetof indirection Christophe Leroy <christophe.leroy@csgroup.eu>: ilog2: force inlining of __ilog2_u32() and __ilog2_u64() Andy Shevchenko <andriy.shevchenko@linux.intel.com>: bitfield: add explicit inclusions to the example Feng Tang <feng.tang@intel.com>: lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option Randy Dunlap <rdunlap@infradead.org>: lib: bitmap: fix many kernel-doc warnings Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: prefer MODULE_LICENSE("GPL") over MODULE_LICENSE("GPL v2") checkpatch: add --fix option for some TRAILING_STATEMENTS checkpatch: add early_param exception to blank line after struct/function test Sagar Patel <sagarmp@cs.unc.edu>: checkpatch: use python3 to find codespell dictionary Subsystem: init Mark-PK Tsai <mark-pk.tsai@mediatek.com>: init: use ktime_us_delta() to make initcall_debug log more precise Randy Dunlap <rdunlap@infradead.org>: init.h: improve __setup and early_param documentation init/main.c: return 1 from handled __setup() functions Subsystem: pipe Andrei Vagin <avagin@gmail.com>: fs/pipe: use kvcalloc to allocate a pipe_buffer array fs/pipe.c: local vars have to match types of proper pipe_inode_info fields Subsystem: minix Qinghua Jin <qhjin.dev@gmail.com>: minix: fix bug when opening a file with O_DIRECT Subsystem: fat Helge Deller <deller@gmx.de>: fat: use pointer to simple type in put_user() Subsystem: cgroups Sebastian Andrzej Siewior <bigeasy@linutronix.de>: cgroup: use irqsave in cgroup_rstat_flush_locked(). cgroup: add a comment to cgroup_rstat_flush_locked(). Subsystem: kexec Jisheng Zhang <jszhang@kernel.org>: Patch series "kexec: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef", v2: kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef Subsystem: kdump Tiezhu Yang <yangtiezhu@loongson.cn>: Patch series "Update doc and fix some issues about kdump", v2: docs: kdump: update description about sysfs file system support docs: kdump: add scp example to write out the dump file panic: unset panic_on_warn inside panic() ubsan: no need to unset panic_on_warn in ubsan_epilogue() kasan: no need to unset panic_on_warn in end_report() Subsystem: taskstats Lukas Bulwahn <lukas.bulwahn@gmail.com>: taskstats: remove unneeded dead assignment Subsystem: panic "Guilherme G. Piccoli" <gpiccoli@igalia.com>: Patch series "Some improvements on panic_print": docs: sysctl/kernel: add missing bit to panic_print panic: add option to dump all CPUs backtraces in panic_print panic: move panic_print before kmsg dumpers Subsystem: kcov Aleksandr Nogikh <nogikh@google.com>: Patch series "kcov: improve mmap processing", v3: kcov: split ioctl handling into locked and unlocked parts kcov: properly handle subsequent mmap calls Subsystem: resource Miaohe Lin <linmiaohe@huawei.com>: kernel/resource: fix kfree() of bootmem memory again Subsystem: ubsan Marco Elver <elver@google.com>: Revert "ubsan, kcsan: Don't combine sanitizer with kcov on clang" Documentation/admin-guide/kdump/kdump.rst | 10 + Documentation/admin-guide/kernel-parameters.txt | 5 Documentation/admin-guide/sysctl/kernel.rst | 2 Documentation/dev-tools/sparse.rst | 2 arch/arm64/mm/init.c | 9 - arch/riscv/mm/init.c | 6 - arch/x86/kernel/setup.c | 10 - fs/fat/dir.c | 2 fs/minix/inode.c | 3 fs/pipe.c | 13 +- fs/proc/base.c | 8 - fs/proc/vmcore.c | 43 +++---- include/linux/bitfield.h | 3 include/linux/compiler_types.h | 3 include/linux/init.h | 11 + include/linux/kexec.h | 12 +- include/linux/log2.h | 4 include/linux/stddef.h | 6 - include/uapi/linux/types.h | 6 - init/main.c | 14 +- kernel/cgroup/rstat.c | 13 +- kernel/kcov.c | 102 ++++++++--------- kernel/ksysfs.c | 3 kernel/panic.c | 37 ++++-- kernel/resource.c | 41 +----- kernel/taskstats.c | 5 lib/Kconfig.debug | 142 ++++++++++++------------ lib/Kconfig.kcsan | 11 - lib/Kconfig.ubsan | 12 -- lib/bitmap.c | 24 ++-- lib/ubsan.c | 10 - mm/kasan/report.c | 10 - scripts/checkpatch.pl | 31 ++++- tools/include/linux/types.h | 5 34 files changed, 313 insertions(+), 305 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-03-22 21:38 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-03-22 21:38 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches - A few misc subsystems - There is a lot of MM material in Willy's tree. Folio work and non-folio patches which depended on that work. Here I send almost all the MM patches which precede the patches in Willy's tree. The remaining ~100 MM patches are staged on Willy's tree and I'll send those along once Willy is merged up. I tried this batch against your current tree (as of 51912904076680281) and a couple need some extra persuasion to apply, but all looks OK otherwise. 227 patches, based on f443e374ae131c168a065ea1748feac6b2e76613 Subsystems affected by this patch series: kthread scripts ntfs ocfs2 block vfs mm/kasan mm/pagecache mm/gup mm/swap mm/shmem mm/memcg mm/selftests mm/pagemap mm/mremap mm/sparsemem mm/vmalloc mm/pagealloc mm/memory-failure mm/mlock mm/hugetlb mm/userfaultfd mm/vmscan mm/compaction mm/mempolicy mm/oom-kill mm/migration mm/thp mm/cma mm/autonuma mm/psi mm/ksm mm/page-poison mm/madvise mm/memory-hotplug mm/rmap mm/zswap mm/uaccess mm/ioremap mm/highmem mm/cleanups mm/kfence mm/hmm mm/damon Subsystem: kthread Rasmus Villemoes <linux@rasmusvillemoes.dk>: linux/kthread.h: remove unused macros Subsystem: scripts Colin Ian King <colin.i.king@gmail.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ntfs Dongliang Mu <mudongliangabcd@gmail.com>: ntfs: add sanity check on allocation size Subsystem: ocfs2 Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: cleanup some return variables hongnanli <hongnan.li@linux.alibaba.com>: fs/ocfs2: fix comments mentioning i_mutex Subsystem: block NeilBrown <neilb@suse.de>: Patch series "Remove remaining parts of congestion tracking code", v2: doc: convert 'subsection' to 'section' in gfp.h mm: document and polish read-ahead code mm: improve cleanup when ->readpages doesn't process all pages fuse: remove reliance on bdi congestion nfs: remove reliance on bdi congestion ceph: remove reliance on bdi congestion remove inode_congested() remove bdi_congested() and wb_congested() and related functions f2fs: replace congestion_wait() calls with io_schedule_timeout() block/bfq-iosched.c: use "false" rather than "BLK_RW_ASYNC" remove congestion tracking framework Subsystem: vfs Anthony Iliopoulos <ailiop@suse.com>: mount: warn only once about timestamp range expiration Subsystem: mm/kasan Miaohe Lin <linmiaohe@huawei.com>: mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory Subsystem: mm/pagecache Miaohe Lin <linmiaohe@huawei.com>: filemap: remove find_get_pages() mm/writeback: minor clean up for highmem_dirtyable_memory Minchan Kim <minchan@kernel.org>: mm: fs: fix lru_cache_disabled race in bh_lru Subsystem: mm/gup Peter Xu <peterx@redhat.com>: Patch series "mm/gup: some cleanups", v5: mm: fix invalid page pointer returned with FOLL_PIN gups John Hubbard <jhubbard@nvidia.com>: mm/gup: follow_pfn_pte(): -EEXIST cleanup mm/gup: remove unused pin_user_pages_locked() mm: change lookup_node() to use get_user_pages_fast() mm/gup: remove unused get_user_pages_locked() Subsystem: mm/swap Bang Li <libang.linuxer@gmail.com>: mm/swap: fix confusing comment in folio_mark_accessed Subsystem: mm/shmem Xavier Roche <xavier.roche@algolia.com>: tmpfs: support for file creation time Hugh Dickins <hughd@google.com>: shmem: mapping_set_exiting() to help mapped resilience tmpfs: do not allocate pages on read Miaohe Lin <linmiaohe@huawei.com>: mm: shmem: use helper macro __ATTR_RW Subsystem: mm/memcg Shakeel Butt <shakeelb@google.com>: memcg: replace in_interrupt() with !in_task() Yosry Ahmed <yosryahmed@google.com>: memcg: add per-memcg total kernel memory stat Wei Yang <richard.weiyang@gmail.com>: mm/memcg: mem_cgroup_per_node is already set to 0 on allocation mm/memcg: retrieve parent memcg from css.parent Shakeel Butt <shakeelb@google.com>: Patch series "memcg: robust enforcement of memory.high", v2: memcg: refactor mem_cgroup_oom memcg: unify force charging conditions selftests: memcg: test high limit for single entry allocation memcg: synchronously enforce memory.high for large overcharges Randy Dunlap <rdunlap@infradead.org>: mm/memcontrol: return 1 from cgroup.memory __setup() handler Michal Hocko <mhocko@suse.com>: Patch series "mm/memcg: Address PREEMPT_RT problems instead of disabling it", v5: mm/memcg: revert ("mm/memcg: optimize user context object stock access") Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/memcg: disable threshold event handlers on PREEMPT_RT mm/memcg: protect per-CPU counter by disabling preemption on PREEMPT_RT where needed. Johannes Weiner <hannes@cmpxchg.org>: mm/memcg: opencode the inner part of obj_cgroup_uncharge_pages() in drain_obj_stock() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/memcg: protect memcg_stock with a local_lock_t mm/memcg: disable migration instead of preemption in drain_all_stock(). Muchun Song <songmuchun@bytedance.com>: Patch series "Optimize list lru memory consumption", v6: mm: list_lru: transpose the array of per-node per-memcg lru lists mm: introduce kmem_cache_alloc_lru fs: introduce alloc_inode_sb() to allocate filesystems specific inode fs: allocate inode by using alloc_inode_sb() f2fs: allocate inode by using alloc_inode_sb() mm: dcache: use kmem_cache_alloc_lru() to allocate dentry xarray: use kmem_cache_alloc_lru to allocate xa_node mm: memcontrol: move memcg_online_kmem() to mem_cgroup_css_online() mm: list_lru: allocate list_lru_one only when needed mm: list_lru: rename memcg_drain_all_list_lrus to memcg_reparent_list_lrus mm: list_lru: replace linear array with xarray mm: memcontrol: reuse memory cgroup ID for kmem ID mm: memcontrol: fix cannot alloc the maximum memcg ID mm: list_lru: rename list_lru_per_memcg to list_lru_memcg mm: memcontrol: rename memcg_cache_id to memcg_kmem_id Vasily Averin <vvs@virtuozzo.com>: memcg: enable accounting for tty-related objects Subsystem: mm/selftests Guillaume Tucker <guillaume.tucker@collabora.com>: selftests, x86: fix how check_cc.sh is being invoked Subsystem: mm/pagemap Anshuman Khandual <anshuman.khandual@arm.com>: mm: merge pte_mkhuge() call into arch_make_huge_pte() Stafford Horne <shorne@gmail.com>: mm: remove mmu_gathers storage from remaining architectures Muchun Song <songmuchun@bytedance.com>: Patch series "Fix some cache flush bugs", v5: mm: thp: fix wrong cache flush in remove_migration_pmd() mm: fix missing cache flush for all tail pages of compound page mm: hugetlb: fix missing cache flush in copy_huge_page_from_user() mm: hugetlb: fix missing cache flush in hugetlb_mcopy_atomic_pte() mm: shmem: fix missing cache flush in shmem_mfill_atomic_pte() mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic() mm: replace multiple dcache flush with flush_dcache_folio() Peter Xu <peterx@redhat.com>: Patch series "mm: Rework zap ptes on swap entries", v5: mm: don't skip swap entry even if zap_details specified mm: rename zap_skip_check_mapping() to should_zap_page() mm: change zap_details.zap_mapping into even_cows mm: rework swap handling of zap_pte_range Randy Dunlap <rdunlap@infradead.org>: mm/mmap: return 1 from stack_guard_gap __setup() handler Miaohe Lin <linmiaohe@huawei.com>: mm/memory.c: use helper function range_in_vma() mm/memory.c: use helper macro min and max in unmap_mapping_range_tree() Hugh Dickins <hughd@google.com>: mm: _install_special_mapping() apply VM_LOCKED_CLEAR_MASK Miaohe Lin <linmiaohe@huawei.com>: mm/mmap: remove obsolete comment in ksys_mmap_pgoff Subsystem: mm/mremap Miaohe Lin <linmiaohe@huawei.com>: mm/mremap:: use vma_lookup() instead of find_vma() Subsystem: mm/sparsemem Miaohe Lin <linmiaohe@huawei.com>: mm/sparse: make mminit_validate_memmodel_limits() static Subsystem: mm/vmalloc Miaohe Lin <linmiaohe@huawei.com>: mm/vmalloc: remove unneeded function forward declaration "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: Move draining areas out of caller context Uladzislau Rezki <uladzislau.rezki@sony.com>: mm/vmalloc: add adjust_search_size parameter "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: eliminate an extra orig_gfp_mask Jiapeng Chong <jiapeng.chong@linux.alibaba.com>: mm/vmalloc.c: fix "unused function" warning Bang Li <libang.linuxer@gmail.com>: mm/vmalloc: fix comments about vmap_area struct Subsystem: mm/pagealloc Zi Yan <ziy@nvidia.com>: mm: page_alloc: avoid merging non-fallbackable pageblocks with others Peter Collingbourne <pcc@google.com>: mm/mmzone.c: use try_cmpxchg() in page_cpupid_xchg_last() Miaohe Lin <linmiaohe@huawei.com>: mm/mmzone.h: remove unused macros Nicolas Saenz Julienne <nsaenzju@redhat.com>: mm/page_alloc: don't pass pfn to free_unref_page_commit() David Hildenbrand <david@redhat.com>: Patch series "mm: enforce pageblock_order < MAX_ORDER": cma: factor out minimum alignment requirement mm: enforce pageblock_order < MAX_ORDER Nathan Chancellor <nathan@kernel.org>: mm/page_alloc: mark pagesets as __maybe_unused Alistair Popple <apopple@nvidia.com>: mm/pages_alloc.c: don't create ZONE_MOVABLE beyond the end of a node Mel Gorman <mgorman@techsingularity.net>: Patch series "Follow-up on high-order PCP caching", v2: mm/page_alloc: fetch the correct pcp buddy during bulk free mm/page_alloc: track range of active PCP lists during bulk free mm/page_alloc: simplify how many pages are selected per pcp list during bulk free mm/page_alloc: drain the requested list first during bulk free mm/page_alloc: free pages in a single pass during bulk free mm/page_alloc: limit number of high-order pages on PCP during bulk free mm/page_alloc: do not prefetch buddies during bulk free Oscar Salvador <osalvador@suse.de>: arch/x86/mm/numa: Do not initialize nodes twice Suren Baghdasaryan <surenb@google.com>: mm: count time in drain_all_pages during direct reclaim as memory pressure Eric Dumazet <edumazet@google.com>: mm/page_alloc: call check_new_pages() while zone spinlock is not held Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: check high-order pages for corruption during PCP operations Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/memory-failure.c: remove obsolete comment mm/hwpoison: fix error page recovered but reported "not recovered" Rik van Riel <riel@surriel.com>: mm: invalidate hwpoison page cache page in fault path Miaohe Lin <linmiaohe@huawei.com>: Patch series "A few cleanup and fixup patches for memory failure", v3: mm/memory-failure.c: minor clean up for memory_failure_dev_pagemap mm/memory-failure.c: catch unexpected -EFAULT from vma_address() mm/memory-failure.c: rework the signaling logic in kill_proc mm/memory-failure.c: fix race with changing page more robustly mm/memory-failure.c: remove PageSlab check in hwpoison_filter_dev mm/memory-failure.c: rework the try_to_unmap logic in hwpoison_user_mappings() mm/memory-failure.c: remove obsolete comment in __soft_offline_page mm/memory-failure.c: remove unnecessary PageTransTail check mm/hwpoison-inject: support injecting hwpoison to free page luofei <luofei@unicloud.com>: mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler mm/hwpoison: add in-use hugepage hwpoison filter judgement Miaohe Lin <linmiaohe@huawei.com>: Patch series "A few fixup patches for memory failure", v2: mm/memory-failure.c: fix race with changing page compound again mm/memory-failure.c: avoid calling invalidate_inode_page() with unexpected pages mm/memory-failure.c: make non-LRU movable pages unhandlable Vlastimil Babka <vbabka@suse.cz>: mm, fault-injection: declare should_fail_alloc_page() Subsystem: mm/mlock Miaohe Lin <linmiaohe@huawei.com>: mm/mlock: fix potential imbalanced rlimit ucounts adjustment Subsystem: mm/hugetlb Muchun Song <songmuchun@bytedance.com>: Patch series "Free the 2nd vmemmap page associated with each HugeTLB page", v7: mm: hugetlb: free the 2nd vmemmap page associated with each HugeTLB page mm: hugetlb: replace hugetlb_free_vmemmap_enabled with a static_key mm: sparsemem: use page table lock to protect kernel pmd operations selftests: vm: add a hugetlb test case mm: sparsemem: move vmemmap related to HugeTLB to CONFIG_HUGETLB_PAGE_FREE_VMEMMAP Anshuman Khandual <anshuman.khandual@arm.com>: mm/hugetlb: generalize ARCH_WANT_GENERAL_HUGETLB Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: clean up potential spectre issue warnings Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: use helper macro __ATTR_RW David Howells <dhowells@redhat.com>: mm/hugetlb.c: export PageHeadHuge() Miaohe Lin <linmiaohe@huawei.com>: mm: remove unneeded local variable follflags Subsystem: mm/userfaultfd Nadav Amit <namit@vmware.com>: userfaultfd: provide unmasked address on page-fault Guo Zhengkui <guozhengkui@vivo.com>: userfaultfd/selftests: fix uninitialized_var.cocci warning Subsystem: mm/vmscan Hugh Dickins <hughd@google.com>: mm/fs: delete PF_SWAPWRITE mm: __isolate_lru_page_prepare() in isolate_migratepages_block() Waiman Long <longman@redhat.com>: mm/list_lru: optimize memcg_reparent_list_lru_node() Marcelo Tosatti <mtosatti@redhat.com>: mm: lru_cache_disable: replace work queue synchronization with synchronize_rcu Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm: workingset: replace IRQ-off check with a lockdep assert. Charan Teja Kalla <quic_charante@quicinc.com>: mm: vmscan: fix documentation for page_check_references() Subsystem: mm/compaction Baolin Wang <baolin.wang@linux.alibaba.com>: mm: compaction: cleanup the compaction trace events Subsystem: mm/mempolicy Hugh Dickins <hughd@google.com>: mempolicy: mbind_range() set_policy() after vma_merge() Subsystem: mm/oom-kill Miaohe Lin <linmiaohe@huawei.com>: mm/oom_kill: remove unneeded is_memcg_oom check Subsystem: mm/migration Huang Ying <ying.huang@intel.com>: mm,migrate: fix establishing demotion target "andrew.yang" <andrew.yang@mediatek.com>: mm/migrate: fix race between lock page and clear PG_Isolated Subsystem: mm/thp Hugh Dickins <hughd@google.com>: mm/thp: refix __split_huge_pmd_locked() for migration PMD Subsystem: mm/cma Hari Bathini <hbathini@linux.ibm.com>: Patch series "powerpc/fadump: handle CMA activation failure appropriately", v3: mm/cma: provide option to opt out from exposing pages on activation failure powerpc/fadump: opt out from freeing pages on cma activation failure Subsystem: mm/autonuma Huang Ying <ying.huang@intel.com>: Patch series "NUMA balancing: optimize memory placement for memory tiering system", v13: NUMA Balancing: add page promotion counter NUMA balancing: optimize page placement for memory tiering system memory tiering: skip to scan fast memory Subsystem: mm/psi Johannes Weiner <hannes@cmpxchg.org>: mm: page_io: fix psi memory pressure error on cold swapins Subsystem: mm/ksm Yang Yang <yang.yang29@zte.com.cn>: mm/vmstat: add event for ksm swapping in copy Miaohe Lin <linmiaohe@huawei.com>: mm/ksm: use helper macro __ATTR_RW Subsystem: mm/page-poison "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/hwpoison: check the subpage, not the head page Subsystem: mm/madvise Miaohe Lin <linmiaohe@huawei.com>: mm/madvise: use vma_lookup() instead of find_vma() Charan Teja Kalla <quic_charante@quicinc.com>: Patch series "mm: madvise: return correct bytes processed with: mm: madvise: return correct bytes advised with process_madvise mm: madvise: skip unmapped vma holes passed to process_madvise Subsystem: mm/memory-hotplug Michal Hocko <mhocko@suse.com>: Patch series "mm, memory_hotplug: handle unitialized numa node gracefully": mm, memory_hotplug: make arch_alloc_nodedata independent on CONFIG_MEMORY_HOTPLUG mm: handle uninitialized numa nodes gracefully mm, memory_hotplug: drop arch_free_nodedata mm, memory_hotplug: reorganize new pgdat initialization mm: make free_area_init_node aware of memory less nodes Wei Yang <richard.weiyang@gmail.com>: memcg: do not tweak node in alloc_mem_cgroup_per_node_info David Hildenbrand <david@redhat.com>: drivers/base/memory: add memory block to memory group after registration succeeded drivers/base/node: consolidate node device subsystem initialization in node_dev_init() Miaohe Lin <linmiaohe@huawei.com>: Patch series "A few cleanup patches around memory_hotplug": mm/memory_hotplug: remove obsolete comment of __add_pages mm/memory_hotplug: avoid calling zone_intersects() for ZONE_NORMAL mm/memory_hotplug: clean up try_offline_node mm/memory_hotplug: fix misplaced comment in offline_pages David Hildenbrand <david@redhat.com>: Patch series "drivers/base/memory: determine and store zone for single-zone memory blocks", v2: drivers/base/node: rename link_mem_sections() to register_memory_block_under_node() drivers/base/memory: determine and store zone for single-zone memory blocks drivers/base/memory: clarify adding and removing of memory blocks Oscar Salvador <osalvador@suse.de>: mm: only re-generate demotion targets when a numa node changes its N_CPU state Subsystem: mm/rmap Hugh Dickins <hughd@google.com>: mm/thp: ClearPageDoubleMap in first page_add_file_rmap() Subsystem: mm/zswap "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com>: mm/zswap.c: allow handling just same-value filled pages Subsystem: mm/uaccess Christophe Leroy <christophe.leroy@csgroup.eu>: mm: remove usercopy_warn() mm: uninline copy_overflow() Randy Dunlap <rdunlap@infradead.org>: mm/usercopy: return 1 from hardened_usercopy __setup() handler Subsystem: mm/ioremap Vlastimil Babka <vbabka@suse.cz>: mm/early_ioremap: declare early_memremap_pgprot_adjust() Subsystem: mm/highmem Ira Weiny <ira.weiny@intel.com>: highmem: document kunmap_local() Miaohe Lin <linmiaohe@huawei.com>: mm/highmem: remove unnecessary done label Subsystem: mm/cleanups "Dr. David Alan Gilbert" <linux@treblig.org>: mm/page_table_check.c: use strtobool for param parsing Subsystem: mm/kfence tangmeng <tangmeng@uniontech.com>: mm/kfence: remove unnecessary CONFIG_KFENCE option Tianchen Ding <dtcccc@linux.alibaba.com>: Patch series "provide the flexibility to enable KFENCE", v3: kfence: allow re-enabling KFENCE after system startup kfence: alloc kfence_pool after system startup Peng Liu <liupeng256@huawei.com>: Patch series "kunit: fix a UAF bug and do some optimization", v2: kunit: fix UAF when run kfence test case test_gfpzero kunit: make kunit_test_timeout compatible with comment kfence: test: try to avoid test_gfpzero trigger rcu_stall Marco Elver <elver@google.com>: kfence: allow use of a deferrable timer Subsystem: mm/hmm Miaohe Lin <linmiaohe@huawei.com>: mm/hmm.c: remove unneeded local variable ret Subsystem: mm/damon SeongJae Park <sj@kernel.org>: Patch series "Remove the type-unclear target id concept": mm/damon/dbgfs/init_regions: use target index instead of target id Docs/admin-guide/mm/damon/usage: update for changed initail_regions file input mm/damon/core: move damon_set_targets() into dbgfs mm/damon: remove the target id concept Baolin Wang <baolin.wang@linux.alibaba.com>: mm/damon: remove redundant page validation SeongJae Park <sj@kernel.org>: Patch series "Allow DAMON user code independent of monitoring primitives": mm/damon: rename damon_primitives to damon_operations mm/damon: let monitoring operations can be registered and selected mm/damon/paddr,vaddr: register themselves to DAMON in subsys_initcall mm/damon/reclaim: use damon_select_ops() instead of damon_{v,p}a_set_operations() mm/damon/dbgfs: use damon_select_ops() instead of damon_{v,p}a_set_operations() mm/damon/dbgfs: use operations id for knowing if the target has pid mm/damon/dbgfs-test: fix is_target_id() change mm/damon/paddr,vaddr: remove damon_{p,v}a_{target_valid,set_operations}() tangmeng <tangmeng@uniontech.com>: mm/damon: remove unnecessary CONFIG_DAMON option SeongJae Park <sj@kernel.org>: Patch series "Docs/damon: Update documents for better consistency": Docs/vm/damon: call low level monitoring primitives the operations Docs/vm/damon/design: update DAMON-Idle Page Tracking interference handling Docs/damon: update outdated term 'regions update interval' Patch series "Introduce DAMON sysfs interface", v3: mm/damon/core: allow non-exclusive DAMON start/stop mm/damon/core: add number of each enum type values mm/damon: implement a minimal stub for sysfs-based DAMON interface mm/damon/sysfs: link DAMON for virtual address spaces monitoring mm/damon/sysfs: support the physical address space monitoring mm/damon/sysfs: support DAMON-based Operation Schemes mm/damon/sysfs: support DAMOS quotas mm/damon/sysfs: support schemes prioritization mm/damon/sysfs: support DAMOS watermarks mm/damon/sysfs: support DAMOS stats selftests/damon: add a test for DAMON sysfs interface Docs/admin-guide/mm/damon/usage: document DAMON sysfs interface Docs/ABI/testing: add DAMON sysfs interface ABI document Xin Hao <xhao@linux.alibaba.com>: mm/damon/sysfs: remove repeat container_of() in damon_sysfs_kdamond_release() Documentation/ABI/testing/sysfs-kernel-mm-damon | 274 ++ Documentation/admin-guide/cgroup-v1/memory.rst | 2 Documentation/admin-guide/cgroup-v2.rst | 5 Documentation/admin-guide/kernel-parameters.txt | 2 Documentation/admin-guide/mm/damon/usage.rst | 380 +++ Documentation/admin-guide/mm/zswap.rst | 22 Documentation/admin-guide/sysctl/kernel.rst | 31 Documentation/core-api/mm-api.rst | 19 Documentation/dev-tools/kfence.rst | 12 Documentation/filesystems/porting.rst | 6 Documentation/filesystems/vfs.rst | 16 Documentation/vm/damon/design.rst | 43 Documentation/vm/damon/faq.rst | 2 MAINTAINERS | 1 arch/arm/Kconfig | 4 arch/arm64/kernel/setup.c | 3 arch/arm64/mm/hugetlbpage.c | 1 arch/hexagon/mm/init.c | 2 arch/ia64/kernel/topology.c | 10 arch/ia64/mm/discontig.c | 11 arch/mips/kernel/topology.c | 5 arch/nds32/mm/init.c | 1 arch/openrisc/mm/init.c | 2 arch/powerpc/include/asm/fadump-internal.h | 5 arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 4 arch/powerpc/kernel/fadump.c | 8 arch/powerpc/kernel/sysfs.c | 17 arch/riscv/Kconfig | 4 arch/riscv/kernel/setup.c | 3 arch/s390/kernel/numa.c | 7 arch/sh/kernel/topology.c | 5 arch/sparc/kernel/sysfs.c | 12 arch/sparc/mm/hugetlbpage.c | 1 arch/x86/Kconfig | 4 arch/x86/kernel/cpu/mce/core.c | 8 arch/x86/kernel/topology.c | 5 arch/x86/mm/numa.c | 33 block/bdev.c | 2 block/bfq-iosched.c | 2 drivers/base/init.c | 1 drivers/base/memory.c | 149 + drivers/base/node.c | 48 drivers/block/drbd/drbd_int.h | 3 drivers/block/drbd/drbd_req.c | 3 drivers/dax/super.c | 2 drivers/of/of_reserved_mem.c | 9 drivers/tty/tty_io.c | 2 drivers/virtio/virtio_mem.c | 9 fs/9p/vfs_inode.c | 2 fs/adfs/super.c | 2 fs/affs/super.c | 2 fs/afs/super.c | 2 fs/befs/linuxvfs.c | 2 fs/bfs/inode.c | 2 fs/btrfs/inode.c | 2 fs/buffer.c | 8 fs/ceph/addr.c | 22 fs/ceph/inode.c | 2 fs/ceph/super.c | 1 fs/ceph/super.h | 1 fs/cifs/cifsfs.c | 2 fs/coda/inode.c | 2 fs/dcache.c | 3 fs/ecryptfs/super.c | 2 fs/efs/super.c | 2 fs/erofs/super.c | 2 fs/exfat/super.c | 2 fs/ext2/ialloc.c | 5 fs/ext2/super.c | 2 fs/ext4/super.c | 2 fs/f2fs/compress.c | 4 fs/f2fs/data.c | 3 fs/f2fs/f2fs.h | 6 fs/f2fs/segment.c | 8 fs/f2fs/super.c | 14 fs/fat/inode.c | 2 fs/freevxfs/vxfs_super.c | 2 fs/fs-writeback.c | 40 fs/fuse/control.c | 17 fs/fuse/dev.c | 8 fs/fuse/file.c | 17 fs/fuse/inode.c | 2 fs/gfs2/super.c | 2 fs/hfs/super.c | 2 fs/hfsplus/super.c | 2 fs/hostfs/hostfs_kern.c | 2 fs/hpfs/super.c | 2 fs/hugetlbfs/inode.c | 2 fs/inode.c | 2 fs/isofs/inode.c | 2 fs/jffs2/super.c | 2 fs/jfs/super.c | 2 fs/minix/inode.c | 2 fs/namespace.c | 2 fs/nfs/inode.c | 2 fs/nfs/write.c | 14 fs/nilfs2/segbuf.c | 16 fs/nilfs2/super.c | 2 fs/ntfs/inode.c | 6 fs/ntfs3/super.c | 2 fs/ocfs2/alloc.c | 2 fs/ocfs2/aops.c | 2 fs/ocfs2/cluster/nodemanager.c | 2 fs/ocfs2/dir.c | 4 fs/ocfs2/dlmfs/dlmfs.c | 2 fs/ocfs2/file.c | 13 fs/ocfs2/inode.c | 2 fs/ocfs2/localalloc.c | 6 fs/ocfs2/namei.c | 2 fs/ocfs2/ocfs2.h | 4 fs/ocfs2/quota_global.c | 2 fs/ocfs2/stack_user.c | 18 fs/ocfs2/super.c | 2 fs/ocfs2/xattr.c | 2 fs/openpromfs/inode.c | 2 fs/orangefs/super.c | 2 fs/overlayfs/super.c | 2 fs/proc/inode.c | 2 fs/qnx4/inode.c | 2 fs/qnx6/inode.c | 2 fs/reiserfs/super.c | 2 fs/romfs/super.c | 2 fs/squashfs/super.c | 2 fs/sysv/inode.c | 2 fs/ubifs/super.c | 2 fs/udf/super.c | 2 fs/ufs/super.c | 2 fs/userfaultfd.c | 5 fs/vboxsf/super.c | 2 fs/xfs/libxfs/xfs_btree.c | 2 fs/xfs/xfs_buf.c | 3 fs/xfs/xfs_icache.c | 2 fs/zonefs/super.c | 2 include/linux/backing-dev-defs.h | 8 include/linux/backing-dev.h | 50 include/linux/cma.h | 14 include/linux/damon.h | 95 include/linux/fault-inject.h | 2 include/linux/fs.h | 21 include/linux/gfp.h | 10 include/linux/highmem-internal.h | 10 include/linux/hugetlb.h | 8 include/linux/kthread.h | 22 include/linux/list_lru.h | 45 include/linux/memcontrol.h | 46 include/linux/memory.h | 12 include/linux/memory_hotplug.h | 132 - include/linux/migrate.h | 8 include/linux/mm.h | 11 include/linux/mmzone.h | 22 include/linux/nfs_fs_sb.h | 1 include/linux/node.h | 25 include/linux/page-flags.h | 96 include/linux/pageblock-flags.h | 7 include/linux/pagemap.h | 7 include/linux/sched.h | 1 include/linux/sched/sysctl.h | 10 include/linux/shmem_fs.h | 1 include/linux/slab.h | 3 include/linux/swap.h | 6 include/linux/thread_info.h | 5 include/linux/uaccess.h | 2 include/linux/vm_event_item.h | 3 include/linux/vmalloc.h | 4 include/linux/xarray.h | 9 include/ras/ras_event.h | 1 include/trace/events/compaction.h | 26 include/trace/events/writeback.h | 28 include/uapi/linux/userfaultfd.h | 8 ipc/mqueue.c | 2 kernel/dma/contiguous.c | 4 kernel/sched/core.c | 21 kernel/sysctl.c | 2 lib/Kconfig.kfence | 12 lib/kunit/try-catch.c | 3 lib/xarray.c | 10 mm/Kconfig | 6 mm/backing-dev.c | 57 mm/cma.c | 31 mm/cma.h | 1 mm/compaction.c | 60 mm/damon/Kconfig | 19 mm/damon/Makefile | 7 mm/damon/core-test.h | 23 mm/damon/core.c | 190 + mm/damon/dbgfs-test.h | 103 mm/damon/dbgfs.c | 264 +- mm/damon/ops-common.c | 133 + mm/damon/ops-common.h | 16 mm/damon/paddr.c | 62 mm/damon/prmtv-common.c | 133 - mm/damon/prmtv-common.h | 16 mm/damon/reclaim.c | 11 mm/damon/sysfs.c | 2632 ++++++++++++++++++++++- mm/damon/vaddr-test.h | 8 mm/damon/vaddr.c | 67 mm/early_ioremap.c | 1 mm/fadvise.c | 5 mm/filemap.c | 17 mm/gup.c | 103 mm/highmem.c | 9 mm/hmm.c | 3 mm/huge_memory.c | 41 mm/hugetlb.c | 23 mm/hugetlb_vmemmap.c | 74 mm/hwpoison-inject.c | 7 mm/internal.h | 19 mm/kfence/Makefile | 2 mm/kfence/core.c | 147 + mm/kfence/kfence_test.c | 3 mm/ksm.c | 6 mm/list_lru.c | 690 ++---- mm/maccess.c | 6 mm/madvise.c | 18 mm/memcontrol.c | 549 ++-- mm/memory-failure.c | 148 - mm/memory.c | 116 - mm/memory_hotplug.c | 136 - mm/mempolicy.c | 29 mm/memremap.c | 3 mm/migrate.c | 128 - mm/mlock.c | 1 mm/mmap.c | 5 mm/mmzone.c | 7 mm/mprotect.c | 13 mm/mremap.c | 4 mm/oom_kill.c | 3 mm/page-writeback.c | 12 mm/page_alloc.c | 429 +-- mm/page_io.c | 7 mm/page_table_check.c | 10 mm/ptdump.c | 16 mm/readahead.c | 124 + mm/rmap.c | 15 mm/shmem.c | 46 mm/slab.c | 39 mm/slab.h | 25 mm/slob.c | 6 mm/slub.c | 42 mm/sparse-vmemmap.c | 70 mm/sparse.c | 2 mm/swap.c | 25 mm/swapfile.c | 1 mm/usercopy.c | 16 mm/userfaultfd.c | 3 mm/vmalloc.c | 102 mm/vmscan.c | 138 - mm/vmstat.c | 19 mm/workingset.c | 7 mm/zswap.c | 15 net/socket.c | 2 net/sunrpc/rpc_pipe.c | 2 scripts/spelling.txt | 16 tools/testing/selftests/cgroup/cgroup_util.c | 15 tools/testing/selftests/cgroup/cgroup_util.h | 1 tools/testing/selftests/cgroup/test_memcontrol.c | 78 tools/testing/selftests/damon/Makefile | 1 tools/testing/selftests/damon/sysfs.sh | 306 ++ tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 7 tools/testing/selftests/vm/hugepage-vmemmap.c | 144 + tools/testing/selftests/vm/run_vmtests.sh | 11 tools/testing/selftests/vm/userfaultfd.c | 2 tools/testing/selftests/x86/Makefile | 6 264 files changed, 7205 insertions(+), 3090 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-03-16 23:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-03-16 23:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches 4 patches, based on 56e337f2cf1326323844927a04e9dbce9a244835. Subsystems affected by this patch series: mm/swap kconfig ocfs2 selftests Subsystem: mm/swap Guo Ziliang <guo.ziliang@zte.com.cn>: mm: swap: get rid of deadloop in swapin readahead Subsystem: kconfig Qian Cai <quic_qiancai@quicinc.com>: configs/debug: restore DEBUG_INFO=y for overriding Subsystem: ocfs2 Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: fix crash when initialize filecheck kobj fails Subsystem: selftests Yosry Ahmed <yosryahmed@google.com>: selftests: vm: fix clang build error multiple output files fs/ocfs2/super.c | 22 +++++++++++----------- kernel/configs/debug.config | 1 + mm/swap_state.c | 2 +- tools/testing/selftests/vm/Makefile | 6 ++---- 4 files changed, 15 insertions(+), 16 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-03-05 4:28 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-03-05 4:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches 8 patches, based on 07ebd38a0da24d2534da57b4841346379db9f354. Subsystems affected by this patch series: mm/hugetlb mm/pagemap memfd selftests mm/userfaultfd kconfig Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: selftests/vm: cleanup hugetlb file after mremap test Subsystem: mm/pagemap Suren Baghdasaryan <surenb@google.com>: mm: refactor vm_area_struct::anon_vma_name usage code mm: prevent vm_area_struct::anon_name refcount saturation mm: fix use-after-free when anon vma name is used after vma is freed Subsystem: memfd Hugh Dickins <hughd@google.com>: memfd: fix F_SEAL_WRITE after shmem huge page allocated Subsystem: selftests Chengming Zhou <zhouchengming@bytedance.com>: kselftest/vm: fix tests build with old libc Subsystem: mm/userfaultfd Yun Zhou <yun.zhou@windriver.com>: proc: fix documentation and description of pagemap Subsystem: kconfig Qian Cai <quic_qiancai@quicinc.com>: configs/debug: set CONFIG_DEBUG_INFO=y properly Documentation/admin-guide/mm/pagemap.rst | 2 fs/proc/task_mmu.c | 9 +- fs/userfaultfd.c | 6 - include/linux/mm.h | 7 + include/linux/mm_inline.h | 105 ++++++++++++++++++--------- include/linux/mm_types.h | 5 + kernel/configs/debug.config | 2 kernel/fork.c | 4 - kernel/sys.c | 19 +++- mm/madvise.c | 98 +++++++++---------------- mm/memfd.c | 40 +++++++--- mm/mempolicy.c | 2 mm/mlock.c | 2 mm/mmap.c | 12 +-- mm/mprotect.c | 2 tools/testing/selftests/vm/hugepage-mremap.c | 26 ++++-- tools/testing/selftests/vm/run_vmtests.sh | 3 tools/testing/selftests/vm/userfaultfd.c | 1 18 files changed, 201 insertions(+), 144 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-02-26 3:10 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-02-26 3:10 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm, patches 12 patches, based on c47658311d60be064b839f329c0e4d34f5f0735b. Subsystems affected by this patch series: MAINTAINERS mm/hugetlb mm/kasan mm/hugetlbfs mm/pagemap mm/selftests mm/memcg m/slab mailmap memfd Subsystem: MAINTAINERS Luis Chamberlain <mcgrof@kernel.org>: MAINTAINERS: add sysctl-next git tree Subsystem: mm/hugetlb "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/hugetlb: fix kernel crash with hugetlb mremap Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: test: prevent cache merging in kmem_cache_double_destroy Subsystem: mm/hugetlbfs Liu Yuntao <liuyuntao10@huawei.com>: hugetlbfs: fix a truncation issue in hugepages parameter Subsystem: mm/pagemap Suren Baghdasaryan <surenb@google.com>: mm: fix use-after-free bug when mm->mmap is reused after being freed Subsystem: mm/selftests "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: selftest/vm: fix map_fixed_noreplace test failure Subsystem: mm/memcg Roman Gushchin <roman.gushchin@linux.dev>: MAINTAINERS: add Roman as a memcg co-maintainer Vladimir Davydov <vdavydov.dev@gmail.com>: MAINTAINERS: remove Vladimir from memcg maintainers Shakeel Butt <shakeelb@google.com>: MAINTAINERS: add Shakeel as a memcg co-maintainer Subsystem: m/slab Vlastimil Babka <vbabka@suse.cz>: MAINTAINERS, SLAB: add Roman as reviewer, git tree Subsystem: mailmap Roman Gushchin <roman.gushchin@linux.dev>: mailmap: update Roman Gushchin's email Subsystem: memfd Mike Kravetz <mike.kravetz@oracle.com>: selftests/memfd: clean up mapping in mfd_fail_write .mailmap | 3 + MAINTAINERS | 6 ++ lib/test_kasan.c | 5 +- mm/hugetlb.c | 11 ++--- mm/mmap.c | 1 tools/testing/selftests/memfd/memfd_test.c | 1 tools/testing/selftests/vm/map_fixed_noreplace.c | 49 +++++++++++++++++------ 7 files changed, 56 insertions(+), 20 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-02-12 0:27 Andrew Morton 2022-02-12 2:02 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2022-02-12 0:27 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits, patches 5 patches, based on f1baf68e1383f6ed93eb9cff2866d46562607a43. Subsystems affected by this patch series: binfmt procfs mm/vmscan mm/memcg mm/kfence Subsystem: binfmt Mike Rapoport <rppt@linux.ibm.com>: fs/binfmt_elf: fix PT_LOAD p_align values for loaders Subsystem: procfs Yang Shi <shy828301@gmail.com>: fs/proc: task_mmu.c: don't read mapcount for migration entry Subsystem: mm/vmscan Mel Gorman <mgorman@suse.de>: mm: vmscan: remove deadlock due to throttling failing to make progress Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: memcg: synchronize objcg lists with a dedicated spinlock Subsystem: mm/kfence Peng Liu <liupeng256@huawei.com>: kfence: make test case compatible with run time set sample interval fs/binfmt_elf.c | 2 +- fs/proc/task_mmu.c | 40 +++++++++++++++++++++++++++++++--------- include/linux/kfence.h | 2 ++ include/linux/memcontrol.h | 5 +++-- mm/kfence/core.c | 3 ++- mm/kfence/kfence_test.c | 8 ++++---- mm/memcontrol.c | 10 +++++----- mm/vmscan.c | 4 +++- 8 files changed, 51 insertions(+), 23 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2022-02-12 0:27 incoming Andrew Morton @ 2022-02-12 2:02 ` Linus Torvalds 2022-02-12 5:24 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2022-02-12 2:02 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits, patches On Fri, Feb 11, 2022 at 4:27 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 5 patches, based on f1baf68e1383f6ed93eb9cff2866d46562607a43. So this *completely* flummoxed 'b4', because you first sent the wrong series, and then sent the right one in the same thread. I fetched the emails manually, but honestly, this was confusing even then, with two "[PATCH x/5]" series where the only way to tell the right one was basically by date of email. They did arrive in the same order in my mailbox, but even that wouldn't have been guaranteed if there had been some mailer delays somewhere.. So next time when you mess up, resend it all as a completely new series and completely new threading - so with a new header email too. Please? And since I'm here, let me just verify that yes, the series you actually want me to apply is this one (as described by the head email): Subject: [patch 1/5] fs/binfmt_elf: fix PT_LOAD p_align values .. Subject: [patch 2/5] fs/proc: task_mmu.c: don't read mapcount f.. Subject: [patch 3/5] mm: vmscan: remove deadlock due to throttl.. Subject: [patch 4/5] mm: memcg: synchronize objcg lists with a .. Subject: [patch 5/5] kfence: make test case compatible with run.. and not the other one with GUP patches? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2022-02-12 2:02 ` incoming Linus Torvalds @ 2022-02-12 5:24 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-02-12 5:24 UTC (permalink / raw) To: Linus Torvalds; +Cc: Linux-MM, mm-commits, patches On Fri, 11 Feb 2022 18:02:53 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Fri, Feb 11, 2022 at 4:27 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > 5 patches, based on f1baf68e1383f6ed93eb9cff2866d46562607a43. > > So this *completely* flummoxed 'b4', because you first sent the wrong > series, and then sent the right one in the same thread. > > I fetched the emails manually, but honestly, this was confusing even > then, with two "[PATCH x/5]" series where the only way to tell the > right one was basically by date of email. They did arrive in the same > order in my mailbox, but even that wouldn't have been guaranteed if > there had been some mailer delays somewhere.. Yes, I wondered. Sorry bout that. > So next time when you mess up, resend it all as a completely new > series and completely new threading - so with a new header email too. > Please? Wilco. > And since I'm here, let me just verify that yes, the series you > actually want me to apply is this one (as described by the head > email): > > Subject: [patch 1/5] fs/binfmt_elf: fix PT_LOAD p_align values .. > Subject: [patch 2/5] fs/proc: task_mmu.c: don't read mapcount f.. > Subject: [patch 3/5] mm: vmscan: remove deadlock due to throttl.. > Subject: [patch 4/5] mm: memcg: synchronize objcg lists with a .. > Subject: [patch 5/5] kfence: make test case compatible with run.. > > and not the other one with GUP patches? Those are the ones. Five fixes, three with cc:stable. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-02-04 4:48 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-02-04 4:48 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 10 patches, based on 1f2cfdd349b7647f438c1e552dc1b983da86d830. Subsystems affected by this patch series: mm/vmscan mm/debug mm/pagemap ipc mm/kmemleak MAINTAINERS mm/selftests Subsystem: mm/vmscan Chen Wandun <chenwandun@huawei.com>: Revert "mm/page_isolation: unset migratetype directly for non Buddy page" Subsystem: mm/debug Pasha Tatashin <pasha.tatashin@soleen.com>: Patch series "page table check fixes and cleanups", v5: mm/debug_vm_pgtable: remove pte entry from the page table mm/page_table_check: use unsigned long for page counters and cleanup mm/khugepaged: unify collapse pmd clear, flush and free mm/page_table_check: check entries at pmd levels Subsystem: mm/pagemap Mike Rapoport <rppt@linux.ibm.com>: mm/pgtable: define pte_index so that preprocessor could recognize it Subsystem: ipc Minghao Chi <chi.minghao@zte.com.cn>: ipc/sem: do not sleep with a spin lock held Subsystem: mm/kmemleak Lang Yu <lang.yu@amd.com>: mm/kmemleak: avoid scanning potential huge holes Subsystem: MAINTAINERS Mike Rapoport <rppt@linux.ibm.com>: MAINTAINERS: update rppt's email Subsystem: mm/selftests Shuah Khan <skhan@linuxfoundation.org>: kselftest/vm: revert "tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner" MAINTAINERS | 2 - include/linux/page_table_check.h | 19 ++++++++++ include/linux/pgtable.h | 1 ipc/sem.c | 4 +- mm/debug_vm_pgtable.c | 2 + mm/khugepaged.c | 37 +++++++++++--------- mm/kmemleak.c | 13 +++---- mm/page_isolation.c | 2 - mm/page_table_check.c | 55 +++++++++++++++---------------- tools/testing/selftests/vm/userfaultfd.c | 11 ++++-- 10 files changed, 89 insertions(+), 57 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-01-29 21:40 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-01-29 21:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 12 patches, based on f8c7e4ede46fe63ff10000669652648aab09d112. Subsystems affected by this patch series: sysctl binfmt ia64 mm/memory-failure mm/folios selftests mm/kasan mm/psi ocfs2 Subsystem: sysctl Andrew Morton <akpm@linux-foundation.org>: include/linux/sysctl.h: fix register_sysctl_mount_point() return type Subsystem: binfmt Tong Zhang <ztong0001@gmail.com>: binfmt_misc: fix crash when load/unload module Subsystem: ia64 Randy Dunlap <rdunlap@infradead.org>: ia64: make IA64_MCA_RECOVERY bool instead of tristate Subsystem: mm/memory-failure Joao Martins <joao.m.martins@oracle.com>: memory-failure: fetch compound_head after pgmap_pfn_valid() Subsystem: mm/folios Wei Yang <richard.weiyang@gmail.com>: mm: page->mapping folio->mapping should have the same offset Subsystem: selftests Maor Gottlieb <maorg@nvidia.com>: tools/testing/scatterlist: add missing defines Subsystem: mm/kasan Marco Elver <elver@google.com>: kasan: test: fix compatibility with FORTIFY_SOURCE Peter Collingbourne <pcc@google.com>: mm, kasan: use compare-exchange operation to set KASAN page tag Subsystem: mm/psi Suren Baghdasaryan <surenb@google.com>: psi: fix "no previous prototype" warnings when CONFIG_CGROUPS=n psi: fix "defined but not used" warnings when CONFIG_PROC_FS=n Subsystem: ocfs2 Joseph Qi <joseph.qi@linux.alibaba.com>: Patch series "ocfs2: fix a deadlock case": jbd2: export jbd2_journal_[grab|put]_journal_head ocfs2: fix a deadlock when commit trans arch/ia64/Kconfig | 2 fs/binfmt_misc.c | 8 +-- fs/jbd2/journal.c | 2 fs/ocfs2/suballoc.c | 25 ++++------- include/linux/mm.h | 17 +++++-- include/linux/mm_types.h | 1 include/linux/psi.h | 11 ++-- include/linux/sysctl.h | 2 kernel/sched/psi.c | 79 ++++++++++++++++++----------------- lib/test_kasan.c | 5 ++ mm/memory-failure.c | 6 ++ tools/testing/scatterlist/linux/mm.h | 3 - 12 files changed, 91 insertions(+), 70 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-01-29 2:13 Andrew Morton 2022-01-29 4:25 ` incoming Matthew Wilcox 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2022-01-29 2:13 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 12 patches, based on 169387e2aa291a4e3cb856053730fe99d6cec06f. Subsystems affected by this patch series: sysctl binfmt ia64 mm/memory-failure mm/folios selftests mm/kasan mm/psi ocfs2 Subsystem: sysctl Andrew Morton <akpm@linux-foundation.org>: include/linux/sysctl.h: fix register_sysctl_mount_point() return type Subsystem: binfmt Tong Zhang <ztong0001@gmail.com>: binfmt_misc: fix crash when load/unload module Subsystem: ia64 Randy Dunlap <rdunlap@infradead.org>: ia64: make IA64_MCA_RECOVERY bool instead of tristate Subsystem: mm/memory-failure Joao Martins <joao.m.martins@oracle.com>: memory-failure: fetch compound_head after pgmap_pfn_valid() Subsystem: mm/folios Wei Yang <richard.weiyang@gmail.com>: mm: page->mapping folio->mapping should have the same offset Subsystem: selftests Maor Gottlieb <maorg@nvidia.com>: tools/testing/scatterlist: add missing defines Subsystem: mm/kasan Marco Elver <elver@google.com>: kasan: test: fix compatibility with FORTIFY_SOURCE Peter Collingbourne <pcc@google.com>: mm, kasan: use compare-exchange operation to set KASAN page tag Subsystem: mm/psi Suren Baghdasaryan <surenb@google.com>: psi: fix "no previous prototype" warnings when CONFIG_CGROUPS=n psi: fix "defined but not used" warnings when CONFIG_PROC_FS=n Subsystem: ocfs2 Joseph Qi <joseph.qi@linux.alibaba.com>: Patch series "ocfs2: fix a deadlock case": jbd2: export jbd2_journal_[grab|put]_journal_head ocfs2: fix a deadlock when commit trans arch/ia64/Kconfig | 2 fs/binfmt_misc.c | 8 +-- fs/jbd2/journal.c | 2 fs/ocfs2/suballoc.c | 25 ++++------- include/linux/mm.h | 17 +++++-- include/linux/mm_types.h | 1 include/linux/psi.h | 11 ++-- include/linux/sysctl.h | 2 kernel/sched/psi.c | 79 ++++++++++++++++++----------------- lib/test_kasan.c | 5 ++ mm/memory-failure.c | 6 ++ tools/testing/scatterlist/linux/mm.h | 3 - 12 files changed, 91 insertions(+), 70 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2022-01-29 2:13 incoming Andrew Morton @ 2022-01-29 4:25 ` Matthew Wilcox 2022-01-29 6:23 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Matthew Wilcox @ 2022-01-29 4:25 UTC (permalink / raw) To: Andrew Morton; +Cc: Linus Torvalds, mm-commits, linux-mm On Fri, Jan 28, 2022 at 06:13:41PM -0800, Andrew Morton wrote: > 12 patches, based on 169387e2aa291a4e3cb856053730fe99d6cec06f. ^^ I see 7? ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2022-01-29 4:25 ` incoming Matthew Wilcox @ 2022-01-29 6:23 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-01-29 6:23 UTC (permalink / raw) To: Matthew Wilcox; +Cc: Linus Torvalds, mm-commits, linux-mm On Sat, 29 Jan 2022 04:25:33 +0000 Matthew Wilcox <willy@infradead.org> wrote: > On Fri, Jan 28, 2022 at 06:13:41PM -0800, Andrew Morton wrote: > > 12 patches, based on 169387e2aa291a4e3cb856053730fe99d6cec06f. > ^^ > > I see 7? Crap, sorry, ignore all this, shall redo tomorrow. (It wasn't a good day over here. The thing with disk drives is that the bigger they are, the harder they fall). ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-01-22 6:10 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-01-22 6:10 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits This is the post-linux-next queue. Material which was based on or dependent upon material which was in -next. 69 patches, based on 9b57f458985742bd1c585f4c7f36d04634ce1143. Subsystems affected by this patch series: mm/migration sysctl mm/zsmalloc proc lib Subsystem: mm/migration Alistair Popple <apopple@nvidia.com>: mm/migrate.c: rework migration_entry_wait() to not take a pageref Subsystem: sysctl Xiaoming Ni <nixiaoming@huawei.com>: Patch series "sysctl: first set of kernel/sysctl cleanups", v2: sysctl: add a new register_sysctl_init() interface sysctl: move some boundary constants from sysctl.c to sysctl_vals hung_task: move hung_task sysctl interface to hung_task.c watchdog: move watchdog sysctl interface to watchdog.c Stephen Kitt <steve@sk2.org>: sysctl: make ngroups_max const Xiaoming Ni <nixiaoming@huawei.com>: sysctl: use const for typically used max/min proc sysctls sysctl: use SYSCTL_ZERO to replace some static int zero uses aio: move aio sysctl to aio.c dnotify: move dnotify sysctl to dnotify.c Luis Chamberlain <mcgrof@kernel.org>: Patch series "sysctl: second set of kernel/sysctl cleanups", v2: hpet: simplify subdirectory registration with register_sysctl() i915: simplify subdirectory registration with register_sysctl() macintosh/mac_hid.c: simplify subdirectory registration with register_sysctl() ocfs2: simplify subdirectory registration with register_sysctl() test_sysctl: simplify subdirectory registration with register_sysctl() Xiaoming Ni <nixiaoming@huawei.com>: inotify: simplify subdirectory registration with register_sysctl() Luis Chamberlain <mcgrof@kernel.org>: cdrom: simplify subdirectory registration with register_sysctl() Xiaoming Ni <nixiaoming@huawei.com>: eventpoll: simplify sysctl declaration with register_sysctl() Patch series "sysctl: 3rd set of kernel/sysctl cleanups", v2: firmware_loader: move firmware sysctl to its own files random: move the random sysctl declarations to its own file Luis Chamberlain <mcgrof@kernel.org>: sysctl: add helper to register a sysctl mount point fs: move binfmt_misc sysctl to its own file Xiaoming Ni <nixiaoming@huawei.com>: printk: move printk sysctl to printk/sysctl.c scsi/sg: move sg-big-buff sysctl to scsi/sg.c stackleak: move stack_erasing sysctl to stackleak.c Luis Chamberlain <mcgrof@kernel.org>: sysctl: share unsigned long const values Patch series "sysctl: 4th set of kernel/sysctl cleanups": fs: move inode sysctls to its own file fs: move fs stat sysctls to file_table.c fs: move dcache sysctls to its own file sysctl: move maxolduid as a sysctl specific const fs: move shared sysctls to fs/sysctls.c fs: move locking sysctls where they are used fs: move namei sysctls to its own file fs: move fs/exec.c sysctls into its own file fs: move pipe sysctls to is own file Patch series "sysctl: add and use base directory declarer and registration helper": sysctl: add and use base directory declarer and registration helper fs: move namespace sysctls and declare fs base directory kernel/sysctl.c: rename sysctl_init() to sysctl_init_bases() Xiaoming Ni <nixiaoming@huawei.com>: printk: fix build warning when CONFIG_PRINTK=n fs/coredump: move coredump sysctls into its own file kprobe: move sysctl_kprobes_optimization to kprobes.c Colin Ian King <colin.i.king@gmail.com>: kernel/sysctl.c: remove unused variable ten_thousand Baokun Li <libaokun1@huawei.com>: sysctl: returns -EINVAL when a negative value is passed to proc_doulongvec_minmax Subsystem: mm/zsmalloc Minchan Kim <minchan@kernel.org>: Patch series "zsmalloc: remove bit_spin_lock", v2: zsmalloc: introduce some helper functions zsmalloc: rename zs_stat_type to class_stat_type zsmalloc: decouple class actions from zspage works zsmalloc: introduce obj_allocated zsmalloc: move huge compressed obj from page to zspage zsmalloc: remove zspage isolation for migration locking/rwlocks: introduce write_lock_nested zsmalloc: replace per zpage lock with pool->migrate_lock Mike Galbraith <umgwanakikbuti@gmail.com>: zsmalloc: replace get_cpu_var with local_lock Subsystem: proc Muchun Song <songmuchun@bytedance.com>: fs: proc: store PDE()->data into inode->i_private proc: remove PDE_DATA() completely Subsystem: lib Vlastimil Babka <vbabka@suse.cz>: lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() lib/stackdepot: fix spelling mistake and grammar in pr_err message lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() - fixup lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() - fixup3 lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() - fixup4 Marco Elver <elver@google.com>: lib/stackdepot: always do filter_irq_stacks() in stack_depot_save() Christoph Hellwig <hch@lst.de>: Patch series "remove Xen tmem leftovers": mm: remove cleancache frontswap: remove frontswap_writethrough frontswap: remove frontswap_tmem_exclusive_gets frontswap: remove frontswap_shrink frontswap: remove frontswap_curr_pages frontswap: simplify frontswap_init frontswap: remove the frontswap exports mm: simplify try_to_unuse frontswap: remove frontswap_test frontswap: simplify frontswap_register_ops mm: mark swap_lock and swap_active_head static frontswap: remove support for multiple ops mm: hide the FRONTSWAP Kconfig symbol Documentation/vm/cleancache.rst | 296 ------ Documentation/vm/frontswap.rst | 31 Documentation/vm/index.rst | 1 MAINTAINERS | 7 arch/alpha/kernel/srm_env.c | 4 arch/arm/configs/bcm2835_defconfig | 1 arch/arm/configs/qcom_defconfig | 1 arch/arm/kernel/atags_proc.c | 2 arch/arm/mm/alignment.c | 2 arch/ia64/kernel/salinfo.c | 10 arch/m68k/configs/amiga_defconfig | 1 arch/m68k/configs/apollo_defconfig | 1 arch/m68k/configs/atari_defconfig | 1 arch/m68k/configs/bvme6000_defconfig | 1 arch/m68k/configs/hp300_defconfig | 1 arch/m68k/configs/mac_defconfig | 1 arch/m68k/configs/multi_defconfig | 1 arch/m68k/configs/mvme147_defconfig | 1 arch/m68k/configs/mvme16x_defconfig | 1 arch/m68k/configs/q40_defconfig | 1 arch/m68k/configs/sun3_defconfig | 1 arch/m68k/configs/sun3x_defconfig | 1 arch/powerpc/kernel/proc_powerpc.c | 4 arch/s390/configs/debug_defconfig | 1 arch/s390/configs/defconfig | 1 arch/sh/mm/alignment.c | 4 arch/xtensa/platforms/iss/simdisk.c | 4 block/bdev.c | 5 drivers/acpi/proc.c | 2 drivers/base/firmware_loader/fallback.c | 7 drivers/base/firmware_loader/fallback.h | 11 drivers/base/firmware_loader/fallback_table.c | 25 drivers/cdrom/cdrom.c | 23 drivers/char/hpet.c | 22 drivers/char/random.c | 14 drivers/gpu/drm/drm_dp_mst_topology.c | 1 drivers/gpu/drm/drm_mm.c | 4 drivers/gpu/drm/drm_modeset_lock.c | 9 drivers/gpu/drm/i915/i915_perf.c | 22 drivers/gpu/drm/i915/intel_runtime_pm.c | 3 drivers/hwmon/dell-smm-hwmon.c | 4 drivers/macintosh/mac_hid.c | 24 drivers/net/bonding/bond_procfs.c | 8 drivers/net/wireless/cisco/airo.c | 22 drivers/net/wireless/intersil/hostap/hostap_ap.c | 16 drivers/net/wireless/intersil/hostap/hostap_download.c | 2 drivers/net/wireless/intersil/hostap/hostap_proc.c | 24 drivers/net/wireless/ray_cs.c | 2 drivers/nubus/proc.c | 36 drivers/parisc/led.c | 4 drivers/pci/proc.c | 10 drivers/platform/x86/thinkpad_acpi.c | 4 drivers/platform/x86/toshiba_acpi.c | 16 drivers/pnp/isapnp/proc.c | 2 drivers/pnp/pnpbios/proc.c | 4 drivers/scsi/scsi_proc.c | 4 drivers/scsi/sg.c | 35 drivers/usb/gadget/function/rndis.c | 4 drivers/zorro/proc.c | 2 fs/Makefile | 4 fs/afs/proc.c | 6 fs/aio.c | 31 fs/binfmt_misc.c | 6 fs/btrfs/extent_io.c | 10 fs/btrfs/super.c | 2 fs/coredump.c | 66 + fs/dcache.c | 37 fs/eventpoll.c | 10 fs/exec.c | 145 +-- fs/ext4/mballoc.c | 14 fs/ext4/readpage.c | 6 fs/ext4/super.c | 3 fs/f2fs/data.c | 13 fs/file_table.c | 47 - fs/inode.c | 39 fs/jbd2/journal.c | 2 fs/locks.c | 34 fs/mpage.c | 7 fs/namei.c | 58 + fs/namespace.c | 24 fs/notify/dnotify/dnotify.c | 21 fs/notify/fanotify/fanotify_user.c | 10 fs/notify/inotify/inotify_user.c | 11 fs/ntfs3/ntfs_fs.h | 1 fs/ocfs2/stackglue.c | 25 fs/ocfs2/super.c | 2 fs/pipe.c | 64 + fs/proc/generic.c | 6 fs/proc/inode.c | 1 fs/proc/internal.h | 5 fs/proc/proc_net.c | 8 fs/proc/proc_sysctl.c | 67 + fs/super.c | 3 fs/sysctls.c | 47 - include/linux/aio.h | 4 include/linux/cleancache.h | 124 -- include/linux/coredump.h | 10 include/linux/dcache.h | 10 include/linux/dnotify.h | 1 include/linux/fanotify.h | 2 include/linux/frontswap.h | 35 include/linux/fs.h | 18 include/linux/inotify.h | 3 include/linux/kprobes.h | 6 include/linux/migrate.h | 2 include/linux/mount.h | 3 include/linux/pipe_fs_i.h | 4 include/linux/poll.h | 2 include/linux/printk.h | 4 include/linux/proc_fs.h | 17 include/linux/ref_tracker.h | 2 include/linux/rwlock.h | 6 include/linux/rwlock_api_smp.h | 8 include/linux/rwlock_rt.h | 10 include/linux/sched/sysctl.h | 14 include/linux/seq_file.h | 2 include/linux/shmem_fs.h | 3 include/linux/spinlock_api_up.h | 1 include/linux/stackdepot.h | 25 include/linux/stackleak.h | 5 include/linux/swapfile.h | 3 include/linux/sysctl.h | 67 + include/scsi/sg.h | 4 init/main.c | 9 ipc/util.c | 2 kernel/hung_task.c | 81 + kernel/irq/proc.c | 8 kernel/kprobes.c | 30 kernel/locking/spinlock.c | 10 kernel/locking/spinlock_rt.c | 12 kernel/printk/Makefile | 5 kernel/printk/internal.h | 8 kernel/printk/printk.c | 4 kernel/printk/sysctl.c | 85 + kernel/resource.c | 4 kernel/stackleak.c | 26 kernel/sysctl.c | 790 +---------------- kernel/watchdog.c | 101 ++ lib/Kconfig | 4 lib/Kconfig.kasan | 2 lib/stackdepot.c | 46 lib/test_sysctl.c | 22 mm/Kconfig | 40 mm/Makefile | 1 mm/cleancache.c | 315 ------ mm/filemap.c | 102 +- mm/frontswap.c | 259 ----- mm/kasan/common.c | 1 mm/migrate.c | 38 mm/page_owner.c | 2 mm/shmem.c | 33 mm/swapfile.c | 90 - mm/truncate.c | 15 mm/zsmalloc.c | 557 ++++------- mm/zswap.c | 8 net/atm/proc.c | 4 net/bluetooth/af_bluetooth.c | 8 net/can/bcm.c | 2 net/can/proc.c | 2 net/core/neighbour.c | 6 net/core/pktgen.c | 6 net/ipv4/netfilter/ipt_CLUSTERIP.c | 6 net/ipv4/raw.c | 8 net/ipv4/tcp_ipv4.c | 2 net/ipv4/udp.c | 6 net/netfilter/x_tables.c | 10 net/netfilter/xt_hashlimit.c | 18 net/netfilter/xt_recent.c | 4 net/sunrpc/auth_gss/svcauth_gss.c | 4 net/sunrpc/cache.c | 24 net/sunrpc/stats.c | 2 sound/core/info.c | 4 172 files changed, 1877 insertions(+), 2931 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-01-20 2:07 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-01-20 2:07 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 55 patches, based on df0cc57e057f18e44dac8e6c18aba47ab53202f9 ("Linux 5.16") Subsystems affected by this patch series: percpu procfs sysctl misc core-kernel get_maintainer lib checkpatch binfmt nilfs2 hfs fat adfs panic delayacct kconfig kcov ubsan Subsystem: percpu Kefeng Wang <wangkefeng.wang@huawei.com>: Patch series "mm: percpu: Cleanup percpu first chunk function": mm: percpu: generalize percpu related config mm: percpu: add pcpu_fc_cpu_to_node_fn_t typedef mm: percpu: add generic pcpu_fc_alloc/free funciton mm: percpu: add generic pcpu_populate_pte() function Subsystem: procfs David Hildenbrand <david@redhat.com>: proc/vmcore: don't fake reading zeroes on surprise vmcore_cb unregistration Hans de Goede <hdegoede@redhat.com>: proc: make the proc_create[_data]() stubs static inlines Qi Zheng <zhengqi.arch@bytedance.com>: proc: convert the return type of proc_fd_access_allowed() to be boolean Subsystem: sysctl Geert Uytterhoeven <geert+renesas@glider.be>: sysctl: fix duplicate path separator in printed entries luo penghao <luo.penghao@zte.com.cn>: sysctl: remove redundant ret assignment Subsystem: misc Andy Shevchenko <andriy.shevchenko@linux.intel.com>: include/linux/unaligned: replace kernel.h with the necessary inclusions kernel.h: include a note to discourage people from including it in headers Subsystem: core-kernel Yafang Shao <laoar.shao@gmail.com>: Patch series "task comm cleanups", v2: fs/exec: replace strlcpy with strscpy_pad in __set_task_comm fs/exec: replace strncpy with strscpy_pad in __get_task_comm drivers/infiniband: replace open-coded string copy with get_task_comm fs/binfmt_elf: replace open-coded string copy with get_task_comm samples/bpf/test_overhead_kprobe_kern: replace bpf_probe_read_kernel with bpf_probe_read_kernel_str to get task comm tools/bpf/bpftool/skeleton: replace bpf_probe_read_kernel with bpf_probe_read_kernel_str to get task comm tools/testing/selftests/bpf: replace open-coded 16 with TASK_COMM_LEN kthread: dynamically allocate memory to store kthread's full name Davidlohr Bueso <dave@stgolabs.net>: kernel/sys.c: only take tasklist_lock for get/setpriority(PRIO_PGRP) Subsystem: get_maintainer Randy Dunlap <rdunlap@infradead.org>: get_maintainer: don't remind about no git repo when --nogit is used Subsystem: lib Alexey Dobriyan <adobriyan@gmail.com>: kstrtox: uninline everything Andy Shevchenko <andriy.shevchenko@linux.intel.com>: list: introduce list_is_head() helper and re-use it in list.h Zhen Lei <thunder.leizhen@huawei.com>: lib/list_debug.c: print more list debugging context in __list_del_entry_valid() Isabella Basso <isabbasso@riseup.net>: Patch series "test_hash.c: refactor into KUnit", v3: hash.h: remove unused define directive test_hash.c: split test_int_hash into arch-specific functions test_hash.c: split test_hash_init lib/Kconfig.debug: properly split hash test kernel entries test_hash.c: refactor into kunit Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kunit: replace kernel.h with the necessary inclusions uuid: discourage people from using UAPI header in new code uuid: remove licence boilerplate text from the header Andrey Konovalov <andreyknvl@google.com>: lib/test_meminit: destroy cache in kmem_cache_alloc_bulk() test Subsystem: checkpatch Jerome Forissier <jerome@forissier.org>: checkpatch: relax regexp for COMMIT_LOG_LONG_LINE Joe Perches <joe@perches.com>: checkpatch: improve Kconfig help test Rikard Falkeborn <rikard.falkeborn@gmail.com>: const_structs.checkpatch: add frequently used ops structs Subsystem: binfmt "H.J. Lu" <hjl.tools@gmail.com>: fs/binfmt_elf: use PT_LOAD p_align values for static PIE Subsystem: nilfs2 Colin Ian King <colin.i.king@gmail.com>: nilfs2: remove redundant pointer sbufs Subsystem: hfs Kees Cook <keescook@chromium.org>: hfsplus: use struct_group_attr() for memcpy() region Subsystem: fat "NeilBrown" <neilb@suse.de>: FAT: use io_schedule_timeout() instead of congestion_wait() Subsystem: adfs Minghao Chi <chi.minghao@zte.com.cn>: fs/adfs: remove unneeded variable make code cleaner Subsystem: panic Marco Elver <elver@google.com>: panic: use error_report_end tracepoint on warnings Sebastian Andrzej Siewior <bigeasy@linutronix.de>: panic: remove oops_id Subsystem: delayacct Yang Yang <yang.yang29@zte.com.cn>: delayacct: support swapin delay accounting for swapping without blkio delayacct: fix incomplete disable operation when switch enable to disable delayacct: cleanup flags in struct task_delay_info and functions use it wangyong <wang.yong12@zte.com.cn>: Documentation/accounting/delay-accounting.rst: add thrashing page cache and direct compact delayacct: track delays from memory compact Subsystem: kconfig Qian Cai <quic_qiancai@quicinc.com>: configs: introduce debug.config for CI-like setup Nathan Chancellor <nathan@kernel.org>: Patch series "Fix CONFIG_TEST_KMOD with 256kB page size": arch/Kconfig: split PAGE_SIZE_LESS_THAN_256KB from PAGE_SIZE_LESS_THAN_64KB btrfs: use generic Kconfig option for 256kB page size limit lib/Kconfig.debug: make TEST_KMOD depend on PAGE_SIZE_LESS_THAN_256KB Subsystem: kcov Marco Elver <elver@google.com>: kcov: fix generic Kconfig dependencies if ARCH_WANTS_NO_INSTR Subsystem: ubsan Kees Cook <keescook@chromium.org>: ubsan: remove CONFIG_UBSAN_OBJECT_SIZE Colin Ian King <colin.i.king@gmail.com>: lib: remove redundant assignment to variable ret Documentation/accounting/delay-accounting.rst | 63 +- arch/Kconfig | 4 arch/arm64/Kconfig | 20 arch/ia64/Kconfig | 9 arch/mips/Kconfig | 10 arch/mips/mm/init.c | 28 - arch/powerpc/Kconfig | 17 arch/powerpc/kernel/setup_64.c | 113 ---- arch/riscv/Kconfig | 10 arch/sparc/Kconfig | 12 arch/sparc/kernel/led.c | 8 arch/sparc/kernel/smp_64.c | 119 ----- arch/x86/Kconfig | 19 arch/x86/kernel/setup_percpu.c | 82 --- drivers/base/arch_numa.c | 78 --- drivers/infiniband/hw/qib/qib.h | 2 drivers/infiniband/hw/qib/qib_file_ops.c | 2 drivers/infiniband/sw/rxe/rxe_qp.c | 3 drivers/net/wireless/broadcom/brcm80211/brcmfmac/xtlv.c | 2 fs/adfs/inode.c | 4 fs/binfmt_elf.c | 6 fs/btrfs/Kconfig | 3 fs/exec.c | 5 fs/fat/file.c | 5 fs/hfsplus/hfsplus_raw.h | 12 fs/hfsplus/xattr.c | 4 fs/nilfs2/page.c | 4 fs/proc/array.c | 3 fs/proc/base.c | 4 fs/proc/proc_sysctl.c | 9 fs/proc/vmcore.c | 10 include/kunit/assert.h | 2 include/linux/delayacct.h | 107 ++-- include/linux/elfcore-compat.h | 5 include/linux/elfcore.h | 5 include/linux/hash.h | 5 include/linux/kernel.h | 9 include/linux/kthread.h | 1 include/linux/list.h | 36 - include/linux/percpu.h | 21 include/linux/proc_fs.h | 12 include/linux/sched.h | 9 include/linux/unaligned/packed_struct.h | 2 include/trace/events/error_report.h | 8 include/uapi/linux/taskstats.h | 6 include/uapi/linux/uuid.h | 10 kernel/configs/debug.config | 105 ++++ kernel/delayacct.c | 49 +- kernel/kthread.c | 32 + kernel/panic.c | 21 kernel/sys.c | 16 lib/Kconfig.debug | 45 + lib/Kconfig.ubsan | 13 lib/Makefile | 5 lib/asn1_encoder.c | 2 lib/kstrtox.c | 12 lib/list_debug.c | 8 lib/lz4/lz4defs.h | 2 lib/test_hash.c | 375 +++++++--------- lib/test_meminit.c | 1 lib/test_ubsan.c | 22 mm/Kconfig | 12 mm/memory.c | 4 mm/page_alloc.c | 3 mm/page_io.c | 3 mm/percpu.c | 168 +++++-- samples/bpf/offwaketime_kern.c | 4 samples/bpf/test_overhead_kprobe_kern.c | 11 samples/bpf/test_overhead_tp_kern.c | 5 scripts/Makefile.ubsan | 1 scripts/checkpatch.pl | 54 +- scripts/const_structs.checkpatch | 23 scripts/get_maintainer.pl | 2 tools/accounting/getdelays.c | 8 tools/bpf/bpftool/skeleton/pid_iter.bpf.c | 4 tools/include/linux/hash.h | 5 tools/testing/selftests/bpf/progs/test_stacktrace_map.c | 6 tools/testing/selftests/bpf/progs/test_tracepoint.c | 6 78 files changed, 943 insertions(+), 992 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2022-01-14 22:02 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2022-01-14 22:02 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 146 patches, based on df0cc57e057f18e44dac8e6c18aba47ab53202f9 ("Linux 5.16") Subsystems affected by this patch series: kthread ia64 scripts ntfs squashfs ocfs2 vfs mm/slab-generic mm/slab mm/kmemleak mm/dax mm/kasan mm/debug mm/pagecache mm/gup mm/shmem mm/frontswap mm/memremap mm/memcg mm/selftests mm/pagemap mm/dma mm/vmalloc mm/memory-failure mm/hugetlb mm/userfaultfd mm/vmscan mm/mempolicy mm/oom-kill mm/hugetlbfs mm/migration mm/thp mm/ksm mm/page-poison mm/percpu mm/rmap mm/zswap mm/zram mm/cleanups mm/hmm mm/damon Subsystem: kthread Cai Huoqing <caihuoqing@baidu.com>: kthread: add the helper function kthread_run_on_cpu() RDMA/siw: make use of the helper function kthread_run_on_cpu() ring-buffer: make use of the helper function kthread_run_on_cpu() rcutorture: make use of the helper function kthread_run_on_cpu() trace/osnoise: make use of the helper function kthread_run_on_cpu() trace/hwlat: make use of the helper function kthread_run_on_cpu() Subsystem: ia64 Yang Guang <yang.guang5@zte.com.cn>: ia64: module: use swap() to make code cleaner arch/ia64/kernel/setup.c: use swap() to make code cleaner Jason Wang <wangborong@cdjrlc.com>: ia64: fix typo in a comment Greg Kroah-Hartman <gregkh@linuxfoundation.org>: ia64: topology: use default_groups in kobj_type Subsystem: scripts Drew Fustini <dfustini@baylibre.com>: scripts/spelling.txt: add "oveflow" Subsystem: ntfs Yang Li <yang.lee@linux.alibaba.com>: fs/ntfs/attrib.c: fix one kernel-doc comment Subsystem: squashfs Zheng Liang <zhengliang6@huawei.com>: squashfs: provide backing_dev_info in order to disable read-ahead Subsystem: ocfs2 Zhang Mingyu <zhang.mingyu@zte.com.cn>: ocfs2: use BUG_ON instead of if condition followed by BUG. Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: clearly handle ocfs2_grab_pages_for_write() return value Greg Kroah-Hartman <gregkh@linuxfoundation.org>: ocfs2: use default_groups in kobj_type Colin Ian King <colin.i.king@gmail.com>: ocfs2: remove redundant assignment to pointer root_bh Greg Kroah-Hartman <gregkh@linuxfoundation.org>: ocfs2: cluster: use default_groups in kobj_type Colin Ian King <colin.i.king@gmail.com>: ocfs2: remove redundant assignment to variable free_space Subsystem: vfs Amit Daniel Kachhap <amit.kachhap@arm.com>: fs/ioctl: remove unnecessary __user annotation Subsystem: mm/slab-generic Marco Elver <elver@google.com>: mm/slab_common: use WARN() if cache still has objects on destroy Subsystem: mm/slab Muchun Song <songmuchun@bytedance.com>: mm: slab: make slab iterator functions static Subsystem: mm/kmemleak Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: kmemleak: fix kmemleak false positive report with HW tag-based kasan enable Calvin Zhang <calvinzhang.cool@gmail.com>: mm: kmemleak: alloc gray object for reserved region with direct map Kefeng Wang <wangkefeng.wang@huawei.com>: mm: defer kmemleak object creation of module_alloc() Subsystem: mm/dax Joao Martins <joao.m.martins@oracle.com>: Patch series "mm, device-dax: Introduce compound pages in devmap", v7: mm/page_alloc: split prep_compound_page into head and tail subparts mm/page_alloc: refactor memmap_init_zone_device() page init mm/memremap: add ZONE_DEVICE support for compound pages device-dax: use ALIGN() for determining pgoff device-dax: use struct_size() device-dax: ensure dev_dax->pgmap is valid for dynamic devices device-dax: factor out page mapping initialization device-dax: set mapping prior to vmf_insert_pfn{,_pmd,pud}() device-dax: remove pfn from __dev_dax_{pte,pmd,pud}_fault() device-dax: compound devmap support Subsystem: mm/kasan Marco Elver <elver@google.com>: kasan: test: add globals left-out-of-bounds test kasan: add ability to detect double-kmem_cache_destroy() kasan: test: add test case for double-kmem_cache_destroy() Andrey Konovalov <andreyknvl@google.com>: kasan: fix quarantine conflicting with init_on_free Subsystem: mm/debug "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm,fs: split dump_mapping() out from dump_page() Anshuman Khandual <anshuman.khandual@arm.com>: mm/debug_vm_pgtable: update comments regarding migration swap entries Subsystem: mm/pagecache chiminghao <chi.minghao@zte.com.cn>: mm/truncate.c: remove unneeded variable Subsystem: mm/gup Christophe Leroy <christophe.leroy@csgroup.eu>: gup: avoid multiple user access locking/unlocking in fault_in_{read/write}able Li Xinhai <lixinhai.lxh@gmail.com>: mm/gup.c: stricter check on THP migration entry during follow_pmd_mask Subsystem: mm/shmem Yang Shi <shy828301@gmail.com>: mm: shmem: don't truncate page if memory failure happens Gang Li <ligang.bdlg@bytedance.com>: shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode Subsystem: mm/frontswap Christophe JAILLET <christophe.jaillet@wanadoo.fr>: mm/frontswap.c: use non-atomic '__set_bit()' when possible Subsystem: mm/memremap Subsystem: mm/memcg Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: make cgroup_memory_nokmem static Donghai Qiao <dqiao@redhat.com>: mm/page_counter: remove an incorrect call to propagate_protected_usage() Dan Schatzberg <schatzberg.dan@gmail.com>: mm/memcg: add oom_group_kill memory event Shakeel Butt <shakeelb@google.com>: memcg: better bounds on the memcg stats updates Wang Weiyang <wangweiyang2@huawei.com>: mm/memcg: use struct_size() helper in kzalloc() Shakeel Butt <shakeelb@google.com>: memcg: add per-memcg vmalloc stat Subsystem: mm/selftests chiminghao <chi.minghao@zte.com.cn>: tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner Subsystem: mm/pagemap Qi Zheng <zhengqi.arch@bytedance.com>: mm: remove redundant check about FAULT_FLAG_ALLOW_RETRY bit Colin Cross <ccross@google.com>: Patch series "mm: rearrange madvise code to allow for reuse", v11: mm: rearrange madvise code to allow for reuse mm: add a field to store names for private anonymous memory Suren Baghdasaryan <surenb@google.com>: mm: add anonymous vma name refcounting Arnd Bergmann <arnd@arndb.de>: mm: move anon_vma declarations to linux/mm_inline.h mm: move tlb_flush_pending inline helpers to mm_inline.h Suren Baghdasaryan <surenb@google.com>: mm: protect free_pgtables with mmap_lock write lock in exit_mmap mm: document locking restrictions for vm_operations_struct::close mm/oom_kill: allow process_mrelease to run under mmap_lock protection Shuah Khan <skhan@linuxfoundation.org>: docs/vm: add vmalloced-kernel-stacks document Pasha Tatashin <pasha.tatashin@soleen.com>: Patch series "page table check", v3: mm: change page type prior to adding page table entry mm: ptep_clear() page table helper mm: page table check x86: mm: add x86_64 support for page table check "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: remove last argument of reuse_swap_page() mm: remove the total_mapcount argument from page_trans_huge_map_swapcount() mm: remove the total_mapcount argument from page_trans_huge_mapcount() Subsystem: mm/dma Christian König <christian.koenig@amd.com>: mm/dmapool.c: revert "make dma pool to use kmalloc_node" Subsystem: mm/vmalloc Michal Hocko <mhocko@suse.com>: Patch series "extend vmalloc support for constrained allocations", v2: mm/vmalloc: alloc GFP_NO{FS,IO} for vmalloc mm/vmalloc: add support for __GFP_NOFAIL mm/vmalloc: be more explicit about supported gfp flags. mm: allow !GFP_KERNEL allocations for kvmalloc mm: make slab and vmalloc allocators __GFP_NOLOCKDEP aware "NeilBrown" <neilb@suse.de>: mm: introduce memalloc_retry_wait() Suren Baghdasaryan <surenb@google.com>: mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30% Changcheng Deng <deng.changcheng@zte.com.cn>: mm: fix boolreturn.cocci warning Xiongwei Song <sxwjean@gmail.com>: mm: page_alloc: fix building error on -Werror=array-compare Michal Hocko <mhocko@suse.com>: mm: drop node from alloc_pages_vma Miles Chen <miles.chen@mediatek.com>: include/linux/gfp.h: further document GFP_DMA32 Anshuman Khandual <anshuman.khandual@arm.com>: mm/page_alloc.c: modify the comment section for alloc_contig_pages() Baoquan He <bhe@redhat.com>: Patch series "Handle warning of allocation failure on DMA zone w/o managed pages", v4: mm_zone: add function to check if managed dma zone exists dma/pool: create dma atomic pool only if dma zone has managed pages mm/page_alloc.c: do not warn allocation failure on zone DMA if no managed pages Subsystem: mm/memory-failure Subsystem: mm/hugetlb Mina Almasry <almasrymina@google.com>: hugetlb: add hugetlb.*.numa_stat file Yosry Ahmed <yosryahmed@google.com>: mm, hugepages: make memory size variable in hugepage-mremap selftest Yang Yang <yang.yang29@zte.com.cn>: mm/vmstat: add events for THP max_ptes_* exceeds Waiman Long <longman@redhat.com>: selftests/vm: make charge_reserved_hugetlb.sh work with existing cgroup setting Subsystem: mm/userfaultfd Peter Xu <peterx@redhat.com>: selftests/uffd: allow EINTR/EAGAIN Mike Kravetz <mike.kravetz@oracle.com>: userfaultfd/selftests: clean up hugetlb allocation code Subsystem: mm/vmscan Gang Li <ligang.bdlg@bytedance.com>: vmscan: make drop_slab_node static Chen Wandun <chenwandun@huawei.com>: mm/page_isolation: unset migratetype directly for non Buddy page Subsystem: mm/mempolicy "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "mm: add new syscall set_mempolicy_home_node", v6: mm/mempolicy: use policy_node helper with MPOL_PREFERRED_MANY mm/mempolicy: add set_mempolicy_home_node syscall mm/mempolicy: wire up syscall set_mempolicy_home_node Randy Dunlap <rdunlap@infradead.org>: mm/mempolicy: fix all kernel-doc warnings Subsystem: mm/oom-kill Jann Horn <jannh@google.com>: mm, oom: OOM sysrq should always kill a process Subsystem: mm/hugetlbfs Sean Christopherson <seanjc@google.com>: hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list() Subsystem: mm/migration Baolin Wang <baolin.wang@linux.alibaba.com>: Patch series "Improve the migration stats": mm: migrate: fix the return value of migrate_pages() mm: migrate: correct the hugetlb migration stats mm: compaction: fix the migration stats in trace_mm_compaction_migratepages() mm: migrate: support multiple target nodes demotion mm: migrate: add more comments for selecting target node randomly Huang Ying <ying.huang@intel.com>: mm/migrate: move node demotion code to near its user Colin Ian King <colin.i.king@gmail.com>: mm/migrate: remove redundant variables used in a for-loop Subsystem: mm/thp Anshuman Khandual <anshuman.khandual@arm.com>: mm/thp: drop unused trace events hugepage_[invalidate|splitting] Subsystem: mm/ksm Nanyong Sun <sunnanyong@huawei.com>: mm: ksm: fix use-after-free kasan report in ksm_might_need_to_copy Subsystem: mm/page-poison Naoya Horiguchi <naoya.horiguchi@nec.com>: Patch series "mm/hwpoison: fix unpoison_memory()", v4: mm/hwpoison: mf_mutex for soft offline and unpoison mm/hwpoison: remove MF_MSG_BUDDY_2ND and MF_MSG_POISONED_HUGE mm/hwpoison: fix unpoison_memory() Subsystem: mm/percpu Qi Zheng <zhengqi.arch@bytedance.com>: mm: memcg/percpu: account extra objcg space to memory cgroups Subsystem: mm/rmap Huang Ying <ying.huang@intel.com>: mm/rmap: fix potential batched TLB flush race Subsystem: mm/zswap Zhaoyu Liu <zackary.liu.pro@gmail.com>: zpool: remove the list of pools_head Subsystem: mm/zram Luis Chamberlain <mcgrof@kernel.org>: zram: use ATTRIBUTE_GROUPS Subsystem: mm/cleanups Quanfa Fu <fuqf0919@gmail.com>: mm: fix some comment errors Ting Liu <liuting.0x7c00@bytedance.com>: mm: make some vars and functions static or __init Subsystem: mm/hmm Alistair Popple <apopple@nvidia.com>: mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault Subsystem: mm/damon Xin Hao <xhao@linux.alibaba.com>: Patch series "mm/damon: Do some small changes", v4: mm/damon: unified access_check function naming rules mm/damon: add 'age' of region tracepoint support mm/damon/core: use abs() instead of diff_of() mm/damon: remove some unneeded function definitions in damon.h Yihao Han <hanyihao@vivo.com>: mm/damon/vaddr: remove swap_ranges() and replace it with swap() Xin Hao <xhao@linux.alibaba.com>: mm/damon/schemes: add the validity judgment of thresholds mm/damon: move damon_rand() definition into damon.h mm/damon: modify damon_rand() macro to static inline function SeongJae Park <sj@kernel.org>: Patch series "mm/damon: Misc cleanups": mm/damon: convert macro functions to static inline functions Docs/admin-guide/mm/damon/usage: update for scheme quotas and watermarks Docs/admin-guide/mm/damon/usage: remove redundant information Docs/admin-guide/mm/damon/usage: mention tracepoint at the beginning Docs/admin-guide/mm/damon/usage: update for kdamond_pid and (mk|rm)_contexts mm/damon: remove a mistakenly added comment for a future feature Patch series "mm/damon/schemes: Extend stats for better online analysis and tuning": mm/damon/schemes: account scheme actions that successfully applied mm/damon/schemes: account how many times quota limit has exceeded mm/damon/reclaim: provide reclamation statistics Docs/admin-guide/mm/damon/reclaim: document statistics parameters mm/damon/dbgfs: support all DAMOS stats Docs/admin-guide/mm/damon/usage: update for schemes statistics Baolin Wang <baolin.wang@linux.alibaba.com>: mm/damon: add access checking for hugetlb pages Guoqing Jiang <guoqing.jiang@linux.dev>: mm/damon: move the implementation of damon_insert_region to damon.h SeongJae Park <sj@kernel.org>: Patch series "mm/damon: Hide unnecessary information disclosures": mm/damon/dbgfs: remove an unnecessary variable mm/damon/vaddr: use pr_debug() for damon_va_three_regions() failure logging mm/damon/vaddr: hide kernel pointer from damon_va_three_regions() failure log mm/damon: hide kernel pointer from tracepoint event Documentation/admin-guide/cgroup-v1/hugetlb.rst | 4 Documentation/admin-guide/cgroup-v2.rst | 11 Documentation/admin-guide/mm/damon/reclaim.rst | 25 Documentation/admin-guide/mm/damon/usage.rst | 235 +++++-- Documentation/admin-guide/mm/numa_memory_policy.rst | 16 Documentation/admin-guide/sysctl/vm.rst | 2 Documentation/filesystems/proc.rst | 6 Documentation/vm/arch_pgtable_helpers.rst | 20 Documentation/vm/index.rst | 2 Documentation/vm/page_migration.rst | 12 Documentation/vm/page_table_check.rst | 56 + Documentation/vm/vmalloced-kernel-stacks.rst | 153 ++++ MAINTAINERS | 9 arch/Kconfig | 3 arch/alpha/kernel/syscalls/syscall.tbl | 1 arch/alpha/mm/fault.c | 16 arch/arc/mm/fault.c | 3 arch/arm/mm/fault.c | 2 arch/arm/tools/syscall.tbl | 1 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 2 arch/arm64/kernel/module.c | 4 arch/arm64/mm/fault.c | 6 arch/hexagon/mm/vm_fault.c | 8 arch/ia64/kernel/module.c | 6 arch/ia64/kernel/setup.c | 5 arch/ia64/kernel/syscalls/syscall.tbl | 1 arch/ia64/kernel/topology.c | 3 arch/ia64/kernel/uncached.c | 2 arch/ia64/mm/fault.c | 16 arch/m68k/kernel/syscalls/syscall.tbl | 1 arch/m68k/mm/fault.c | 18 arch/microblaze/kernel/syscalls/syscall.tbl | 1 arch/microblaze/mm/fault.c | 18 arch/mips/kernel/syscalls/syscall_n32.tbl | 1 arch/mips/kernel/syscalls/syscall_n64.tbl | 1 arch/mips/kernel/syscalls/syscall_o32.tbl | 1 arch/mips/mm/fault.c | 19 arch/nds32/mm/fault.c | 16 arch/nios2/mm/fault.c | 18 arch/openrisc/mm/fault.c | 18 arch/parisc/kernel/syscalls/syscall.tbl | 1 arch/parisc/mm/fault.c | 18 arch/powerpc/kernel/syscalls/syscall.tbl | 1 arch/powerpc/mm/fault.c | 6 arch/riscv/mm/fault.c | 2 arch/s390/kernel/module.c | 5 arch/s390/kernel/syscalls/syscall.tbl | 1 arch/s390/mm/fault.c | 28 arch/sh/kernel/syscalls/syscall.tbl | 1 arch/sh/mm/fault.c | 18 arch/sparc/kernel/syscalls/syscall.tbl | 1 arch/sparc/mm/fault_32.c | 16 arch/sparc/mm/fault_64.c | 16 arch/um/kernel/trap.c | 8 arch/x86/Kconfig | 1 arch/x86/entry/syscalls/syscall_32.tbl | 1 arch/x86/entry/syscalls/syscall_64.tbl | 1 arch/x86/include/asm/pgtable.h | 31 - arch/x86/kernel/module.c | 7 arch/x86/mm/fault.c | 3 arch/xtensa/kernel/syscalls/syscall.tbl | 1 arch/xtensa/mm/fault.c | 17 drivers/block/zram/zram_drv.c | 11 drivers/dax/bus.c | 32 + drivers/dax/bus.h | 1 drivers/dax/device.c | 140 ++-- drivers/infiniband/sw/siw/siw_main.c | 7 drivers/of/fdt.c | 6 fs/ext4/extents.c | 8 fs/ext4/inline.c | 5 fs/ext4/page-io.c | 9 fs/f2fs/data.c | 4 fs/f2fs/gc.c | 5 fs/f2fs/inode.c | 4 fs/f2fs/node.c | 4 fs/f2fs/recovery.c | 6 fs/f2fs/segment.c | 9 fs/f2fs/super.c | 5 fs/hugetlbfs/inode.c | 7 fs/inode.c | 49 + fs/ioctl.c | 2 fs/ntfs/attrib.c | 2 fs/ocfs2/alloc.c | 2 fs/ocfs2/aops.c | 26 fs/ocfs2/cluster/masklog.c | 11 fs/ocfs2/dir.c | 2 fs/ocfs2/filecheck.c | 3 fs/ocfs2/journal.c | 6 fs/proc/task_mmu.c | 13 fs/squashfs/super.c | 33 + fs/userfaultfd.c | 8 fs/xfs/kmem.c | 3 fs/xfs/xfs_buf.c | 2 include/linux/ceph/libceph.h | 1 include/linux/damon.h | 93 +-- include/linux/fs.h | 1 include/linux/gfp.h | 12 include/linux/hugetlb.h | 4 include/linux/hugetlb_cgroup.h | 7 include/linux/kasan.h | 4 include/linux/kthread.h | 25 include/linux/memcontrol.h | 22 include/linux/mempolicy.h | 1 include/linux/memremap.h | 11 include/linux/mm.h | 76 -- include/linux/mm_inline.h | 136 ++++ include/linux/mm_types.h | 252 +++----- include/linux/mmzone.h | 9 include/linux/page-flags.h | 6 include/linux/page_idle.h | 1 include/linux/page_table_check.h | 147 ++++ include/linux/pgtable.h | 8 include/linux/sched/mm.h | 26 include/linux/swap.h | 8 include/linux/syscalls.h | 3 include/linux/vm_event_item.h | 3 include/linux/vmalloc.h | 7 include/ras/ras_event.h | 2 include/trace/events/compaction.h | 24 include/trace/events/damon.h | 15 include/trace/events/thp.h | 35 - include/uapi/asm-generic/unistd.h | 5 include/uapi/linux/prctl.h | 3 kernel/dma/pool.c | 4 kernel/fork.c | 3 kernel/kthread.c | 1 kernel/rcu/rcutorture.c | 7 kernel/sys.c | 63 ++ kernel/sys_ni.c | 1 kernel/sysctl.c | 3 kernel/trace/ring_buffer.c | 7 kernel/trace/trace_hwlat.c | 6 kernel/trace/trace_osnoise.c | 3 lib/test_hmm.c | 24 lib/test_kasan.c | 30 mm/Kconfig | 14 mm/Kconfig.debug | 24 mm/Makefile | 1 mm/compaction.c | 7 mm/damon/core.c | 45 - mm/damon/dbgfs.c | 20 mm/damon/paddr.c | 24 mm/damon/prmtv-common.h | 4 mm/damon/reclaim.c | 46 + mm/damon/vaddr.c | 186 ++++-- mm/debug.c | 52 - mm/debug_vm_pgtable.c | 6 mm/dmapool.c | 2 mm/frontswap.c | 4 mm/gup.c | 31 - mm/hmm.c | 5 mm/huge_memory.c | 32 - mm/hugetlb.c | 6 mm/hugetlb_cgroup.c | 133 +++- mm/internal.h | 7 mm/kasan/quarantine.c | 11 mm/kasan/shadow.c | 9 mm/khugepaged.c | 23 mm/kmemleak.c | 21 mm/ksm.c | 5 mm/madvise.c | 510 ++++++++++------ mm/mapping_dirty_helpers.c | 1 mm/memcontrol.c | 44 - mm/memory-failure.c | 189 +++--- mm/memory.c | 12 mm/mempolicy.c | 95 ++- mm/memremap.c | 18 mm/migrate.c | 527 ++++++++++------- mm/mlock.c | 2 mm/mmap.c | 55 + mm/mmu_gather.c | 1 mm/mprotect.c | 2 mm/oom_kill.c | 30 mm/page_alloc.c | 198 ++++-- mm/page_counter.c | 1 mm/page_ext.c | 8 mm/page_isolation.c | 2 mm/page_owner.c | 4 mm/page_table_check.c | 270 ++++++++ mm/percpu-internal.h | 18 mm/percpu.c | 10 mm/pgtable-generic.c | 1 mm/rmap.c | 43 + mm/shmem.c | 91 ++ mm/slab.h | 5 mm/slab_common.c | 34 - mm/swap.c | 2 mm/swapfile.c | 46 - mm/truncate.c | 5 mm/userfaultfd.c | 5 mm/util.c | 15 mm/vmalloc.c | 75 +- mm/vmscan.c | 2 mm/vmstat.c | 3 mm/zpool.c | 12 net/ceph/buffer.c | 4 net/ceph/ceph_common.c | 27 net/ceph/crypto.c | 2 net/ceph/messenger.c | 2 net/ceph/messenger_v2.c | 2 net/ceph/osdmap.c | 12 net/sunrpc/svc_xprt.c | 3 scripts/spelling.txt | 1 tools/testing/selftests/vm/charge_reserved_hugetlb.sh | 34 - tools/testing/selftests/vm/hmm-tests.c | 42 + tools/testing/selftests/vm/hugepage-mremap.c | 46 - tools/testing/selftests/vm/hugetlb_reparenting_test.sh | 21 tools/testing/selftests/vm/run_vmtests.sh | 2 tools/testing/selftests/vm/userfaultfd.c | 33 - tools/testing/selftests/vm/write_hugetlb_memory.sh | 2 211 files changed, 3980 insertions(+), 1759 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-12-31 4:12 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-12-31 4:12 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 2 patches, based on 4f3d93c6eaff6b84e43b63e0d7a119c5920e1020. Subsystems affected by this patch series: mm/userfaultfd mm/damon Subsystem: mm/userfaultfd Mike Kravetz <mike.kravetz@oracle.com>: userfaultfd/selftests: fix hugetlb area allocations Subsystem: mm/damon SeongJae Park <sj@kernel.org>: mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()' mm/damon/dbgfs.c | 9 +++++++-- tools/testing/selftests/vm/userfaultfd.c | 16 ++++++++++------ 2 files changed, 17 insertions(+), 8 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-12-25 5:11 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-12-25 5:11 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 9 patches, based on bc491fb12513e79702c6f936c838f792b5389129. Subsystems affected by this patch series: mm/kfence mm/mempolicy core-kernel MAINTAINERS mm/memory-failure mm/pagemap mm/pagealloc mm/damon mm/memory-failure Subsystem: mm/kfence Baokun Li <libaokun1@huawei.com>: kfence: fix memory leak when cat kfence objects Subsystem: mm/mempolicy Andrey Ryabinin <arbn@yandex-team.com>: mm: mempolicy: fix THP allocations escaping mempolicy restrictions Subsystem: core-kernel Philipp Rudo <prudo@redhat.com>: kernel/crash_core: suppress unknown crashkernel parameter warning Subsystem: MAINTAINERS Randy Dunlap <rdunlap@infradead.org>: MAINTAINERS: mark more list instances as moderated Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm, hwpoison: fix condition in free hugetlb page path Subsystem: mm/pagemap Hugh Dickins <hughd@google.com>: mm: delete unsafe BUG from page_cache_add_speculative() Subsystem: mm/pagealloc Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>: mm/page_alloc: fix __alloc_size attribute for alloc_pages_exact_nid Subsystem: mm/damon SeongJae Park <sj@kernel.org>: mm/damon/dbgfs: protect targets destructions with kdamond_lock Subsystem: mm/memory-failure Liu Shixin <liushixin2@huawei.com>: mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page() MAINTAINERS | 4 ++-- include/linux/gfp.h | 2 +- include/linux/pagemap.h | 1 - kernel/crash_core.c | 11 +++++++++++ mm/damon/dbgfs.c | 2 ++ mm/kfence/core.c | 1 + mm/memory-failure.c | 14 +++++--------- mm/mempolicy.c | 3 +-- 8 files changed, 23 insertions(+), 15 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-12-10 22:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-12-10 22:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 21 patches, based on c741e49150dbb0c0aebe234389f4aa8b47958fa8. Subsystems affected by this patch series: mm/mlock MAINTAINERS mailmap mm/pagecache mm/damon mm/slub mm/memcg mm/hugetlb mm/pagecache Subsystem: mm/mlock Drew DeVault <sir@cmpwn.com>: Increase default MLOCK_LIMIT to 8 MiB Subsystem: MAINTAINERS Dave Young <dyoung@redhat.com>: MAINTAINERS: update kdump maintainers Subsystem: mailmap Guo Ren <guoren@linux.alibaba.com>: mailmap: update email address for Guo Ren Subsystem: mm/pagecache "Matthew Wilcox (Oracle)" <willy@infradead.org>: filemap: remove PageHWPoison check from next_uptodate_page() Subsystem: mm/damon SeongJae Park <sj@kernel.org>: Patch series "mm/damon: Fix fake /proc/loadavg reports", v3: timers: implement usleep_idle_range() mm/damon/core: fix fake load reports due to uninterruptible sleeps Patch series "mm/damon: Trivial fixups and improvements": mm/damon/core: use better timer mechanisms selection threshold mm/damon/dbgfs: remove an unnecessary error message mm/damon/core: remove unnecessary error messages mm/damon/vaddr: remove an unnecessary warning message mm/damon/vaddr-test: split a test function having >1024 bytes frame size mm/damon/vaddr-test: remove unnecessary variables selftests/damon: skip test if DAMON is running selftests/damon: test DAMON enabling with empty target_ids case selftests/damon: test wrong DAMOS condition ranges input selftests/damon: test debugfs file reads/writes with huge count selftests/damon: split test cases Subsystem: mm/slub Gerald Schaefer <gerald.schaefer@linux.ibm.com>: mm/slub: fix endianness bug for alloc/free_traces attributes Subsystem: mm/memcg Waiman Long <longman@redhat.com>: mm/memcg: relocate mod_objcg_mlstate(), get_obj_stock() and put_obj_stock() Subsystem: mm/hugetlb Zhenguo Yao <yaozhenguo1@gmail.com>: hugetlbfs: fix issue of preallocation of gigantic pages can't work Subsystem: mm/pagecache Manjong Lee <mj0123.lee@samsung.com>: mm: bdi: initialize bdi_min_ratio when bdi is unregistered .mailmap | 2 MAINTAINERS | 2 include/linux/delay.h | 14 include/uapi/linux/resource.h | 13 kernel/time/timer.c | 16 - mm/backing-dev.c | 7 mm/damon/core.c | 20 - mm/damon/dbgfs.c | 4 mm/damon/vaddr-test.h | 85 ++--- mm/damon/vaddr.c | 1 mm/filemap.c | 2 mm/hugetlb.c | 2 mm/memcontrol.c | 106 +++---- mm/slub.c | 15 - tools/testing/selftests/damon/.gitignore | 2 tools/testing/selftests/damon/Makefile | 7 tools/testing/selftests/damon/_debugfs_common.sh | 52 +++ tools/testing/selftests/damon/debugfs_attrs.sh | 149 ++-------- tools/testing/selftests/damon/debugfs_empty_targets.sh | 13 tools/testing/selftests/damon/debugfs_huge_count_read_write.sh | 22 + tools/testing/selftests/damon/debugfs_schemes.sh | 19 + tools/testing/selftests/damon/debugfs_target_ids.sh | 19 + tools/testing/selftests/damon/huge_count_read_write.c | 39 ++ 23 files changed, 363 insertions(+), 248 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-11-20 0:42 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-11-20 0:42 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 15 patches, based on a90af8f15bdc9449ee2d24e1d73fa3f7e8633f81. Subsystems affected by this patch series: mm/swap ipc mm/slab-generic hexagon mm/kmemleak mm/hugetlb mm/kasan mm/damon mm/highmem proc Subsystem: mm/swap Matthew Wilcox <willy@infradead.org>: mm/swap.c:put_pages_list(): reinitialise the page list Subsystem: ipc Alexander Mikhalitsyn <alexander.mikhalitsyn@virtuozzo.com>: Patch series "shm: shm_rmid_forced feature fixes": ipc: WARN if trying to remove ipc object which is absent shm: extend forced shm destroy to support objects from several IPC nses Subsystem: mm/slab-generic Yunfeng Ye <yeyunfeng@huawei.com>: mm: emit the "free" trace report before freeing memory in kmem_cache_free() Subsystem: hexagon Nathan Chancellor <nathan@kernel.org>: Patch series "Fixes for ARCH=hexagon allmodconfig", v2: hexagon: export raw I/O routines for modules hexagon: clean up timer-regs.h hexagon: ignore vmlinux.lds Subsystem: mm/kmemleak Rustam Kovhaev <rkovhaev@gmail.com>: mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag Subsystem: mm/hugetlb Bui Quang Minh <minhquangbui99@gmail.com>: hugetlb: fix hugetlb cgroup refcounting during mremap Mina Almasry <almasrymina@google.com>: hugetlb, userfaultfd: fix reservation restore on userfaultfd error Subsystem: mm/kasan Kees Cook <keescook@chromium.org>: kasan: test: silence intentional read overflow warnings Subsystem: mm/damon SeongJae Park <sj@kernel.org>: Patch series "DAMON fixes": mm/damon/dbgfs: use '__GFP_NOWARN' for user-specified size buffer allocation mm/damon/dbgfs: fix missed use of damon_dbgfs_lock Subsystem: mm/highmem Ard Biesheuvel <ardb@kernel.org>: kmap_local: don't assume kmap PTEs are linear arrays in memory Subsystem: proc David Hildenbrand <david@redhat.com>: proc/vmcore: fix clearing user buffer by properly using clear_user() arch/arm/Kconfig | 1 arch/hexagon/include/asm/timer-regs.h | 26 ---- arch/hexagon/include/asm/timex.h | 3 arch/hexagon/kernel/.gitignore | 1 arch/hexagon/kernel/time.c | 12 +- arch/hexagon/lib/io.c | 4 fs/proc/vmcore.c | 20 ++- include/linux/hugetlb_cgroup.h | 12 ++ include/linux/ipc_namespace.h | 15 ++ include/linux/sched/task.h | 2 ipc/shm.c | 189 +++++++++++++++++++++++++--------- ipc/util.c | 6 - lib/test_kasan.c | 2 mm/Kconfig | 3 mm/damon/dbgfs.c | 20 ++- mm/highmem.c | 32 +++-- mm/hugetlb.c | 11 + mm/slab.c | 3 mm/slab.h | 2 mm/slob.c | 3 mm/slub.c | 2 mm/swap.c | 1 22 files changed, 254 insertions(+), 116 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-11-11 4:32 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-11-11 4:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits The post-linux-next material. 7 patches, based on debe436e77c72fcee804fb867f275e6d31aa999c. Subsystems affected by this patch series: mm/debug mm/slab-generic mm/migration mm/memcg mm/kasan Subsystem: mm/debug Yixuan Cao <caoyixuan2019@email.szu.edu.cn>: mm/page_owner.c: modify the type of argument "order" in some functions Subsystem: mm/slab-generic Ingo Molnar <mingo@kernel.org>: mm: allow only SLUB on PREEMPT_RT Subsystem: mm/migration Baolin Wang <baolin.wang@linux.alibaba.com>: mm: migrate: simplify the file-backed pages validation when migrating its mapping Alistair Popple <apopple@nvidia.com>: mm/migrate.c: remove MIGRATE_PFN_LOCKED Subsystem: mm/memcg Christoph Hellwig <hch@lst.de>: Patch series "unexport memcg locking helpers": mm: unexport folio_memcg_{,un}lock mm: unexport {,un}lock_page_memcg Subsystem: mm/kasan Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: kasan: add kasan mode messages when kasan init Documentation/vm/hmm.rst | 2 arch/arm64/mm/kasan_init.c | 2 arch/powerpc/kvm/book3s_hv_uvmem.c | 4 drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 2 drivers/gpu/drm/nouveau/nouveau_dmem.c | 4 include/linux/migrate.h | 1 include/linux/page_owner.h | 12 +- init/Kconfig | 2 lib/test_hmm.c | 5 - mm/kasan/hw_tags.c | 14 ++ mm/kasan/sw_tags.c | 2 mm/memcontrol.c | 4 mm/migrate.c | 151 +++++-------------------------- mm/page_owner.c | 6 - 14 files changed, 61 insertions(+), 150 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-11-09 2:30 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-11-09 2:30 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 87 patches, based on 8bb7eca972ad531c9b149c0a51ab43a417385813, plus previously sent material. Subsystems affected by this patch series: mm/pagecache mm/hugetlb procfs misc MAINTAINERS lib checkpatch binfmt kallsyms ramfs init codafs nilfs2 hfs crash_dump signals seq_file fork sysvfs kcov gdb resource selftests ipc Subsystem: mm/pagecache Johannes Weiner <hannes@cmpxchg.org>: vfs: keep inodes with page cache off the inode shrinker LRU Subsystem: mm/hugetlb zhangyiru <zhangyiru3@huawei.com>: mm,hugetlb: remove mlock ulimit for SHM_HUGETLB Subsystem: procfs Florian Weimer <fweimer@redhat.com>: procfs: do not list TID 0 in /proc/<pid>/task David Hildenbrand <david@redhat.com>: x86/xen: update xen_oldmem_pfn_is_ram() documentation x86/xen: simplify xen_oldmem_pfn_is_ram() x86/xen: print a warning when HVMOP_get_mem_type fails proc/vmcore: let pfn_is_ram() return a bool proc/vmcore: convert oldmem_pfn_is_ram callback to more generic vmcore callbacks virtio-mem: factor out hotplug specifics from virtio_mem_init() into virtio_mem_init_hotplug() virtio-mem: factor out hotplug specifics from virtio_mem_probe() into virtio_mem_init_hotplug() virtio-mem: factor out hotplug specifics from virtio_mem_remove() into virtio_mem_deinit_hotplug() virtio-mem: kdump mode to sanitize /proc/vmcore access Stephen Brennan <stephen.s.brennan@oracle.com>: proc: allow pid_revalidate() during LOOKUP_RCU Subsystem: misc Andy Shevchenko <andriy.shevchenko@linux.intel.com>: Patch series "kernel.h further split", v5: kernel.h: drop unneeded <linux/kernel.h> inclusion from other headers kernel.h: split out container_of() and typeof_member() macros include/kunit/test.h: replace kernel.h with the necessary inclusions include/linux/list.h: replace kernel.h with the necessary inclusions include/linux/llist.h: replace kernel.h with the necessary inclusions include/linux/plist.h: replace kernel.h with the necessary inclusions include/media/media-entity.h: replace kernel.h with the necessary inclusions include/linux/delay.h: replace kernel.h with the necessary inclusions include/linux/sbitmap.h: replace kernel.h with the necessary inclusions include/linux/radix-tree.h: replace kernel.h with the necessary inclusions include/linux/generic-radix-tree.h: replace kernel.h with the necessary inclusions Stephen Rothwell <sfr@canb.auug.org.au>: kernel.h: split out instruction pointer accessors Rasmus Villemoes <linux@rasmusvillemoes.dk>: linux/container_of.h: switch to static_assert Colin Ian King <colin.i.king@googlemail.com>: mailmap: update email address for Colin King Subsystem: MAINTAINERS Kees Cook <keescook@chromium.org>: MAINTAINERS: add "exec & binfmt" section with myself and Eric Lukas Bulwahn <lukas.bulwahn@gmail.com>: Patch series "Rectify file references for dt-bindings in MAINTAINERS", v5: MAINTAINERS: rectify entry for ARM/TOSHIBA VISCONTI ARCHITECTURE MAINTAINERS: rectify entry for HIKEY960 ONBOARD USB GPIO HUB DRIVER MAINTAINERS: rectify entry for INTEL KEEM BAY DRM DRIVER MAINTAINERS: rectify entry for ALLWINNER HARDWARE SPINLOCK SUPPORT Subsystem: lib Imran Khan <imran.f.khan@oracle.com>: Patch series "lib, stackdepot: check stackdepot handle before accessing slabs", v2: lib, stackdepot: check stackdepot handle before accessing slabs lib, stackdepot: add helper to print stack entries lib, stackdepot: add helper to print stack entries into buffer Lucas De Marchi <lucas.demarchi@intel.com>: include/linux/string_helpers.h: add linux/string.h for strlen() Alexey Dobriyan <adobriyan@gmail.com>: lib: uninline simple_strntoull() as well Thomas Gleixner <tglx@linutronix.de>: mm/scatterlist: replace the !preemptible warning in sg_miter_stop() Subsystem: checkpatch Rikard Falkeborn <rikard.falkeborn@gmail.com>: const_structs.checkpatch: add a few sound ops structs Joe Perches <joe@perches.com>: checkpatch: improve EXPORT_SYMBOL test for EXPORT_SYMBOL_NS uses Peter Ujfalusi <peter.ujfalusi@linux.intel.com>: checkpatch: get default codespell dictionary path from package location Subsystem: binfmt Kees Cook <keescook@chromium.org>: binfmt_elf: reintroduce using MAP_FIXED_NOREPLACE Alexey Dobriyan <adobriyan@gmail.com>: ELF: simplify STACK_ALLOC macro Subsystem: kallsyms Kefeng Wang <wangkefeng.wang@huawei.com>: Patch series "sections: Unify kernel sections range check and use", v4: kallsyms: remove arch specific text and data check kallsyms: fix address-checks for kernel related range sections: move and rename core_kernel_data() to is_kernel_core_data() sections: move is_kernel_inittext() into sections.h x86: mm: rename __is_kernel_text() to is_x86_32_kernel_text() sections: provide internal __is_kernel() and __is_kernel_text() helper mm: kasan: use is_kernel() helper extable: use is_kernel_text() helper powerpc/mm: use core_kernel_text() helper microblaze: use is_kernel_text() helper alpha: use is_kernel_text() helper Subsystem: ramfs yangerkun <yangerkun@huawei.com>: ramfs: fix mount source show for ramfs Subsystem: init Andrew Halaney <ahalaney@redhat.com>: init: make unknown command line param message clearer Subsystem: codafs Jan Harkes <jaharkes@cs.cmu.edu>: Patch series "Coda updates for -next": coda: avoid NULL pointer dereference from a bad inode coda: check for async upcall request using local state Alex Shi <alex.shi@linux.alibaba.com>: coda: remove err which no one care Jan Harkes <jaharkes@cs.cmu.edu>: coda: avoid flagging NULL inodes coda: avoid hidden code duplication in rename coda: avoid doing bad things on inode type changes during revalidation Xiyu Yang <xiyuyang19@fudan.edu.cn>: coda: convert from atomic_t to refcount_t on coda_vm_ops->refcnt Jing Yangyang <jing.yangyang@zte.com.cn>: coda: use vmemdup_user to replace the open code Jan Harkes <jaharkes@cs.cmu.edu>: coda: bump module version to 7.2 Subsystem: nilfs2 Qing Wang <wangqing@vivo.com>: Patch series "nilfs2 updates": nilfs2: replace snprintf in show functions with sysfs_emit Ryusuke Konishi <konishi.ryusuke@gmail.com>: nilfs2: remove filenames from file comments Subsystem: hfs Arnd Bergmann <arnd@arndb.de>: hfs/hfsplus: use WARN_ON for sanity check Subsystem: crash_dump Changcheng Deng <deng.changcheng@zte.com.cn>: crash_dump: fix boolreturn.cocci warning Ye Guojin <ye.guojin@zte.com.cn>: crash_dump: remove duplicate include in crash_dump.h Subsystem: signals Ye Guojin <ye.guojin@zte.com.cn>: signal: remove duplicate include in signal.h Subsystem: seq_file Andy Shevchenko <andriy.shevchenko@linux.intel.com>: seq_file: move seq_escape() to a header Muchun Song <songmuchun@bytedance.com>: seq_file: fix passing wrong private data Subsystem: fork Ran Xiaokai <ran.xiaokai@zte.com.cn>: kernel/fork.c: unshare(): use swap() to make code cleaner Subsystem: sysvfs Pavel Skripkin <paskripkin@gmail.com>: sysv: use BUILD_BUG_ON instead of runtime check Subsystem: kcov Sebastian Andrzej Siewior <bigeasy@linutronix.de>: Patch series "kcov: PREEMPT_RT fixup + misc", v2: Documentation/kcov: include types.h in the example Documentation/kcov: define `ip' in the example kcov: allocate per-CPU memory on the relevant node kcov: avoid enable+disable interrupts if !in_task() kcov: replace local_irq_save() with a local_lock_t Subsystem: gdb Douglas Anderson <dianders@chromium.org>: scripts/gdb: handle split debug for vmlinux Subsystem: resource David Hildenbrand <david@redhat.com>: Patch series "virtio-mem: disallow mapping virtio-mem memory via /dev/mem", v5: kernel/resource: clean up and optimize iomem_is_exclusive() kernel/resource: disallow access to exclusive system RAM regions virtio-mem: disallow mapping virtio-mem memory via /dev/mem Subsystem: selftests SeongJae Park <sjpark@amazon.de>: selftests/kselftest/runner/run_one(): allow running non-executable files Subsystem: ipc Michal Clapinski <mclapinski@google.com>: ipc: check checkpoint_restore_ns_capable() to modify C/R proc files Manfred Spraul <manfred@colorfullife.com>: ipc/ipc_sysctl.c: remove fallback for !CONFIG_PROC_SYSCTL .mailmap | 2 Documentation/dev-tools/kcov.rst | 5 MAINTAINERS | 21 + arch/alpha/kernel/traps.c | 4 arch/microblaze/mm/pgtable.c | 3 arch/powerpc/mm/pgtable_32.c | 7 arch/riscv/lib/delay.c | 4 arch/s390/include/asm/facility.h | 4 arch/x86/kernel/aperture_64.c | 13 arch/x86/kernel/unwind_orc.c | 2 arch/x86/mm/init_32.c | 14 arch/x86/xen/mmu_hvm.c | 39 -- drivers/gpu/drm/drm_dp_mst_topology.c | 5 drivers/gpu/drm/drm_mm.c | 5 drivers/gpu/drm/i915/i915_vma.c | 5 drivers/gpu/drm/i915/intel_runtime_pm.c | 20 - drivers/media/dvb-frontends/cxd2880/cxd2880_common.h | 1 drivers/virtio/Kconfig | 1 drivers/virtio/virtio_mem.c | 321 +++++++++++++------ fs/binfmt_elf.c | 33 + fs/coda/cnode.c | 13 fs/coda/coda_linux.c | 39 +- fs/coda/coda_linux.h | 6 fs/coda/dir.c | 20 - fs/coda/file.c | 12 fs/coda/psdev.c | 14 fs/coda/upcall.c | 3 fs/hfs/inode.c | 6 fs/hfsplus/inode.c | 12 fs/hugetlbfs/inode.c | 23 - fs/inode.c | 46 +- fs/internal.h | 1 fs/nilfs2/alloc.c | 2 fs/nilfs2/alloc.h | 2 fs/nilfs2/bmap.c | 2 fs/nilfs2/bmap.h | 2 fs/nilfs2/btnode.c | 2 fs/nilfs2/btnode.h | 2 fs/nilfs2/btree.c | 2 fs/nilfs2/btree.h | 2 fs/nilfs2/cpfile.c | 2 fs/nilfs2/cpfile.h | 2 fs/nilfs2/dat.c | 2 fs/nilfs2/dat.h | 2 fs/nilfs2/dir.c | 2 fs/nilfs2/direct.c | 2 fs/nilfs2/direct.h | 2 fs/nilfs2/file.c | 2 fs/nilfs2/gcinode.c | 2 fs/nilfs2/ifile.c | 2 fs/nilfs2/ifile.h | 2 fs/nilfs2/inode.c | 2 fs/nilfs2/ioctl.c | 2 fs/nilfs2/mdt.c | 2 fs/nilfs2/mdt.h | 2 fs/nilfs2/namei.c | 2 fs/nilfs2/nilfs.h | 2 fs/nilfs2/page.c | 2 fs/nilfs2/page.h | 2 fs/nilfs2/recovery.c | 2 fs/nilfs2/segbuf.c | 2 fs/nilfs2/segbuf.h | 2 fs/nilfs2/segment.c | 2 fs/nilfs2/segment.h | 2 fs/nilfs2/sufile.c | 2 fs/nilfs2/sufile.h | 2 fs/nilfs2/super.c | 2 fs/nilfs2/sysfs.c | 78 ++-- fs/nilfs2/sysfs.h | 2 fs/nilfs2/the_nilfs.c | 2 fs/nilfs2/the_nilfs.h | 2 fs/proc/base.c | 21 - fs/proc/vmcore.c | 109 ++++-- fs/ramfs/inode.c | 11 fs/seq_file.c | 16 fs/sysv/super.c | 6 include/asm-generic/sections.h | 75 +++- include/kunit/test.h | 13 include/linux/bottom_half.h | 3 include/linux/container_of.h | 52 ++- include/linux/crash_dump.h | 30 + include/linux/delay.h | 2 include/linux/fs.h | 1 include/linux/fwnode.h | 1 include/linux/generic-radix-tree.h | 3 include/linux/hugetlb.h | 6 include/linux/instruction_pointer.h | 8 include/linux/kallsyms.h | 21 - include/linux/kernel.h | 39 -- include/linux/list.h | 4 include/linux/llist.h | 4 include/linux/pagemap.h | 50 ++ include/linux/plist.h | 5 include/linux/radix-tree.h | 4 include/linux/rwsem.h | 1 include/linux/sbitmap.h | 11 include/linux/seq_file.h | 19 + include/linux/signal.h | 1 include/linux/smp.h | 1 include/linux/spinlock.h | 1 include/linux/stackdepot.h | 5 include/linux/string_helpers.h | 1 include/media/media-entity.h | 3 init/main.c | 4 ipc/ipc_sysctl.c | 42 +- ipc/shm.c | 8 kernel/extable.c | 33 - kernel/fork.c | 9 kernel/kcov.c | 40 +- kernel/locking/lockdep.c | 3 kernel/resource.c | 54 ++- kernel/trace/ftrace.c | 2 lib/scatterlist.c | 11 lib/stackdepot.c | 46 ++ lib/vsprintf.c | 3 mm/Kconfig | 7 mm/filemap.c | 8 mm/kasan/report.c | 17 - mm/memfd.c | 4 mm/mmap.c | 3 mm/page_owner.c | 18 - mm/truncate.c | 19 + mm/vmscan.c | 7 mm/workingset.c | 10 net/sysctl_net.c | 2 scripts/checkpatch.pl | 33 + scripts/const_structs.checkpatch | 4 scripts/gdb/linux/symbols.py | 3 tools/testing/selftests/kselftest/runner.sh | 28 + tools/testing/selftests/proc/.gitignore | 1 tools/testing/selftests/proc/Makefile | 2 tools/testing/selftests/proc/proc-tid0.c | 81 ++++ 132 files changed, 1206 insertions(+), 681 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-11-05 20:34 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-11-05 20:34 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 262 patches, based on 8bb7eca972ad531c9b149c0a51ab43a417385813 Subsystems affected by this patch series: scripts ocfs2 vfs mm/slab-generic mm/slab mm/slub mm/kconfig mm/dax mm/kasan mm/debug mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/mprotect mm/mremap mm/iomap mm/tracing mm/vmalloc mm/pagealloc mm/memory-failure mm/hugetlb mm/userfaultfd mm/vmscan mm/tools mm/memblock mm/oom-kill mm/hugetlbfs mm/migration mm/thp mm/readahead mm/nommu mm/ksm mm/vmstat mm/madvise mm/memory-hotplug mm/rmap mm/zsmalloc mm/highmem mm/zram mm/cleanups mm/kfence mm/damon Subsystem: scripts Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Sven Eckelmann <sven@narfation.org>: scripts/spelling.txt: fix "mistake" version of "synchronization" weidonghui <weidonghui@allwinnertech.com>: scripts/decodecode: fix faulting instruction no print when opps.file is DOS format Subsystem: ocfs2 Chenyuan Mi <cymi20@fudan.edu.cn>: ocfs2: fix handle refcount leak in two exception handling paths Valentin Vidic <vvidic@valentin-vidic.from.hr>: ocfs2: cleanup journal init and shutdown Colin Ian King <colin.king@canonical.com>: ocfs2/dlm: remove redundant assignment of variable ret Jan Kara <jack@suse.cz>: Patch series "ocfs2: Truncate data corruption fix": ocfs2: fix data corruption on truncate ocfs2: do not zero pages beyond i_size Subsystem: vfs Arnd Bergmann <arnd@arndb.de>: fs/posix_acl.c: avoid -Wempty-body warning Jia He <justin.he@arm.com>: d_path: fix Kernel doc validator complaining Subsystem: mm/slab-generic "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: move kvmalloc-related functions to slab.h Subsystem: mm/slab Shi Lei <shi_lei@massclouds.com>: mm/slab.c: remove useless lines in enable_cpucache() Subsystem: mm/slub Kefeng Wang <wangkefeng.wang@huawei.com>: slub: add back check for free nonslab objects Vlastimil Babka <vbabka@suse.cz>: mm, slub: change percpu partial accounting from objects to pages mm/slub: increase default cpu partial list sizes Hyeonggon Yoo <42.hyeyoo@gmail.com>: mm, slub: use prefetchw instead of prefetch Subsystem: mm/kconfig Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm: disable NUMA_BALANCING_DEFAULT_ENABLED and TRANSPARENT_HUGEPAGE on PREEMPT_RT Subsystem: mm/dax Christoph Hellwig <hch@lst.de>: mm: don't include <linux/dax.h> in <linux/mempolicy.h> Subsystem: mm/kasan Marco Elver <elver@google.com>: Patch series "stackdepot, kasan, workqueue: Avoid expanding stackdepot slabs when holding raw_spin_lock", v2: lib/stackdepot: include gfp.h lib/stackdepot: remove unused function argument lib/stackdepot: introduce __stack_depot_save() kasan: common: provide can_alloc in kasan_save_stack() kasan: generic: introduce kasan_record_aux_stack_noalloc() workqueue, kasan: avoid alloc_pages() when recording stack "Matthew Wilcox (Oracle)" <willy@infradead.org>: kasan: fix tag for large allocations when using CONFIG_SLAB Peter Collingbourne <pcc@google.com>: kasan: test: add memcpy test that avoids out-of-bounds write Subsystem: mm/debug Peter Xu <peterx@redhat.com>: Patch series "mm/smaps: Fixes and optimizations on shmem swap handling": mm/smaps: fix shmem pte hole swap calculation mm/smaps: use vma->vm_pgoff directly when counting partial swap mm/smaps: simplify shmem handling of pte holes Guo Ren <guoren@linux.alibaba.com>: mm: debug_vm_pgtable: don't use __P000 directly Kees Cook <keescook@chromium.org>: kasan: test: bypass __alloc_size checks Patch series "Add __alloc_size()", v3: rapidio: avoid bogus __alloc_size warning Compiler Attributes: add __alloc_size() for better bounds checking slab: clean up function prototypes slab: add __alloc_size attributes for better bounds checking mm/kvmalloc: add __alloc_size attributes for better bounds checking mm/vmalloc: add __alloc_size attributes for better bounds checking mm/page_alloc: add __alloc_size attributes for better bounds checking percpu: add __alloc_size attributes for better bounds checking Yinan Zhang <zhangyinan2019@email.szu.edu.cn>: mm/page_ext.c: fix a comment Subsystem: mm/pagecache David Howells <dhowells@redhat.com>: mm: stop filemap_read() from grabbing a superfluous page Christoph Hellwig <hch@lst.de>: Patch series "simplify bdi unregistation": mm: export bdi_unregister mtd: call bdi_unregister explicitly fs: explicitly unregister per-superblock BDIs mm: don't automatically unregister bdis mm: simplify bdi refcounting Jens Axboe <axboe@kernel.dk>: mm: don't read i_size of inode unless we need it "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap.c: remove bogus VM_BUG_ON Jens Axboe <axboe@kernel.dk>: mm: move more expensive part of XA setup out of mapping check Subsystem: mm/gup John Hubbard <jhubbard@nvidia.com>: mm/gup: further simplify __gup_device_huge() Subsystem: mm/swap Xu Wang <vulab@iscas.ac.cn>: mm/swapfile: remove needless request_queue NULL pointer check Rafael Aquini <aquini@redhat.com>: mm/swapfile: fix an integer overflow in swap_show() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: optimise put_pages_list() Subsystem: mm/memcg Peter Xu <peterx@redhat.com>: mm/memcg: drop swp_entry_t* in mc_handle_file_pte() Shakeel Butt <shakeelb@google.com>: memcg: flush stats only if updated memcg: unify memcg stat flushing Waiman Long <longman@redhat.com>: mm/memcg: remove obsolete memcg_free_kmem() Len Baker <len.baker@gmx.com>: mm/list_lru.c: prefer struct_size over open coded arithmetic Shakeel Butt <shakeelb@google.com>: memcg, kmem: further deprecate kmem.limit_in_bytes Muchun Song <songmuchun@bytedance.com>: mm: list_lru: remove holding lru lock mm: list_lru: fix the return value of list_lru_count_one() mm: memcontrol: remove kmemcg_id reparenting mm: memcontrol: remove the kmem states mm: list_lru: only add memcg-aware lrus to the global lru list Vasily Averin <vvs@virtuozzo.com>: Patch series "memcg: prohibit unconditional exceeding the limit of dying tasks", v3: mm, oom: pagefault_out_of_memory: don't force global OOM for dying tasks Michal Hocko <mhocko@suse.com>: mm, oom: do not trigger out_of_memory from the #PF Vasily Averin <vvs@virtuozzo.com>: memcg: prohibit unconditional exceeding the limit of dying tasks Subsystem: mm/pagemap Peng Liu <liupeng256@huawei.com>: mm/mmap.c: fix a data race of mm->total_vm Rolf Eike Beer <eb@emlix.com>: mm: use __pfn_to_section() instead of open coding it Amit Daniel Kachhap <amit.kachhap@arm.com>: mm/memory.c: avoid unnecessary kernel/user pointer conversion Nadav Amit <namit@vmware.com>: mm/memory.c: use correct VMA flags when freeing page-tables Peter Xu <peterx@redhat.com>: Patch series "mm: A few cleanup patches around zap, shmem and uffd", v4: mm/shmem: unconditionally set pte dirty in mfill_atomic_install_pte mm: clear vmf->pte after pte_unmap_same() returns mm: drop first_index/last_index in zap_details mm: add zap_skip_check_mapping() helper Qi Zheng <zhengqi.arch@bytedance.com>: Patch series "Do some code cleanups related to mm", v3: mm: introduce pmd_install() helper mm: remove redundant smp_wmb() Tiberiu A Georgescu <tiberiu.georgescu@nutanix.com>: Documentation: update pagemap with shmem exceptions Nicholas Piggin <npiggin@gmail.com>: Patch series "shoot lazy tlbs", v4: lazy tlb: introduce lazy mm refcount helper functions lazy tlb: allow lazy tlb mm refcounting to be configurable lazy tlb: shoot lazies, a non-refcounting lazy tlb option powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN Lukas Bulwahn <lukas.bulwahn@gmail.com>: memory: remove unused CONFIG_MEM_BLOCK_SIZE Subsystem: mm/mprotect Liu Song <liu.song11@zte.com.cn>: mm/mprotect.c: avoid repeated assignment in do_mprotect_pkey() Subsystem: mm/mremap Dmitry Safonov <dima@arista.com>: mm/mremap: don't account pages in vma_to_resize() Subsystem: mm/iomap Lucas De Marchi <lucas.demarchi@intel.com>: include/linux/io-mapping.h: remove fallback for writecombine Subsystem: mm/tracing Gang Li <ligang.bdlg@bytedance.com>: mm: mmap_lock: remove redundant newline in TP_printk mm: mmap_lock: use DECLARE_EVENT_CLASS and DEFINE_EVENT_FN Subsystem: mm/vmalloc Vasily Averin <vvs@virtuozzo.com>: mm/vmalloc: repair warn_alloc()s in __vmalloc_area_node() Peter Zijlstra <peterz@infradead.org>: mm/vmalloc: don't allow VM_NO_GUARD on vmap() Eric Dumazet <edumazet@google.com>: mm/vmalloc: make show_numa_info() aware of hugepage mappings mm/vmalloc: make sure to dump unpurged areas in /proc/vmallocinfo "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: do not adjust the search size for alignment overhead mm/vmalloc: check various alignments when debugging Vasily Averin <vvs@virtuozzo.com>: vmalloc: back off when the current task is OOM-killed Kefeng Wang <wangkefeng.wang@huawei.com>: vmalloc: choose a better start address in vm_area_register_early() arm64: support page mapping percpu first chunk allocator kasan: arm64: fix pcpu_page_first_chunk crash with KASAN_VMALLOC Michal Hocko <mhocko@suse.com>: mm/vmalloc: be more explicit about supported gfp flags Chen Wandun <chenwandun@huawei.com>: mm/vmalloc: introduce alloc_pages_bulk_array_mempolicy to accelerate memory allocation Changcheng Deng <deng.changcheng@zte.com.cn>: lib/test_vmalloc.c: use swap() to make code cleaner Subsystem: mm/pagealloc Eric Dumazet <edumazet@google.com>: mm/large system hash: avoid possible NULL deref in alloc_large_system_hash Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups and fixup for page_alloc", v2: mm/page_alloc.c: remove meaningless VM_BUG_ON() in pindex_to_order() mm/page_alloc.c: simplify the code by using macro K() mm/page_alloc.c: fix obsolete comment in free_pcppages_bulk() mm/page_alloc.c: use helper function zone_spans_pfn() mm/page_alloc.c: avoid allocating highmem pages via alloc_pages_exact[_nid] Bharata B Rao <bharata@amd.com>: Patch series "Fix NUMA nodes fallback list ordering": mm/page_alloc: print node fallback order Krupa Ramakrishnan <krupa.ramakrishnan@amd.com>: mm/page_alloc: use accumulated load when building node fallback list Geert Uytterhoeven <geert+renesas@glider.be>: Patch series "Fix NUMA without SMP": mm: move node_reclaim_distance to fix NUMA without SMP mm: move fold_vm_numa_events() to fix NUMA without SMP Eric Dumazet <edumazet@google.com>: mm/page_alloc.c: do not acquire zone lock in is_free_buddy_page() Feng Tang <feng.tang@intel.com>: mm/page_alloc: detect allocation forbidden by cpuset and bail out early Liangcai Fan <liangcaifan19@gmail.com>: mm/page_alloc.c: show watermark_boost of zone in zoneinfo Christophe Leroy <christophe.leroy@csgroup.eu>: mm: create a new system state and fix core_kernel_text() mm: make generic arch_is_kernel_initmem_freed() do what it says powerpc: use generic version of arch_is_kernel_initmem_freed() s390: use generic version of arch_is_kernel_initmem_freed() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm: page_alloc: use migrate_disable() in drain_local_pages_wq() Wang ShaoBo <bobo.shaobowang@huawei.com>: mm/page_alloc: use clamp() to simplify code Subsystem: mm/memory-failure Marco Elver <elver@google.com>: mm: fix data race in PagePoisoned() Rikard Falkeborn <rikard.falkeborn@gmail.com>: mm/memory_failure: constify static mm_walk_ops Yang Shi <shy828301@gmail.com>: Patch series "Solve silent data loss caused by poisoned page cache (shmem/tmpfs)", v5: mm: filemap: coding style cleanup for filemap_map_pmd() mm: hwpoison: refactor refcount check handling mm: shmem: don't truncate page if memory failure happens mm: hwpoison: handle non-anonymous THP correctly Subsystem: mm/hugetlb Peter Xu <peterx@redhat.com>: mm/hugetlb: drop __unmap_hugepage_range definition from hugetlb.h Mike Kravetz <mike.kravetz@oracle.com>: Patch series "hugetlb: add demote/split page functionality", v4: hugetlb: add demote hugetlb page sysfs interfaces mm/cma: add cma_pages_valid to determine if pages are in CMA hugetlb: be sure to free demoted CMA pages to CMA hugetlb: add demote bool to gigantic page routines hugetlb: add hugetlb demote page support Liangcai Fan <liangcaifan19@gmail.com>: mm: khugepaged: recalculate min_free_kbytes after stopping khugepaged Mina Almasry <almasrymina@google.com>: mm, hugepages: add mremap() support for hugepage backed vma mm, hugepages: add hugetlb vma mremap() test Baolin Wang <baolin.wang@linux.alibaba.com>: hugetlb: support node specified when using cma for gigantic hugepages Ran Jianping <ran.jianping@zte.com.cn>: mm: remove duplicate include in hugepage-mremap.c Baolin Wang <baolin.wang@linux.alibaba.com>: Patch series "Some cleanups and improvements for hugetlb": hugetlb_cgroup: remove unused hugetlb_cgroup_from_counter macro hugetlb: replace the obsolete hugetlb_instantiation_mutex in the comments hugetlb: remove redundant validation in has_same_uncharge_info() hugetlb: remove redundant VM_BUG_ON() in add_reservation_in_range() Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: remove unnecessary set_page_count in prep_compound_gigantic_page Subsystem: mm/userfaultfd Axel Rasmussen <axelrasmussen@google.com>: Patch series "Small userfaultfd selftest fixups", v2: userfaultfd/selftests: don't rely on GNU extensions for random numbers userfaultfd/selftests: fix feature support detection userfaultfd/selftests: fix calculation of expected ioctls Subsystem: mm/vmscan Miaohe Lin <linmiaohe@huawei.com>: mm/page_isolation: fix potential missing call to unset_migratetype_isolate() mm/page_isolation: guard against possible putback unisolated page Kai Song <songkai01@inspur.com>: mm/vmscan.c: fix -Wunused-but-set-variable warning Mel Gorman <mgorman@techsingularity.net>: Patch series "Remove dependency on congestion_wait in mm/", v5. Patch series: mm/vmscan: throttle reclaim until some writeback completes if congested mm/vmscan: throttle reclaim and compaction when too may pages are isolated mm/vmscan: throttle reclaim when no progress is being made mm/writeback: throttle based on page writeback instead of congestion mm/page_alloc: remove the throttling logic from the page allocator mm/vmscan: centralise timeout values for reclaim_throttle mm/vmscan: increase the timeout if page reclaim is not making progress mm/vmscan: delay waking of tasks throttled on NOPROGRESS Yuanzheng Song <songyuanzheng@huawei.com>: mm/vmpressure: fix data-race with memcg->socket_pressure Subsystem: mm/tools Zhenliang Wei <weizhenliang@huawei.com>: tools/vm/page_owner_sort.c: count and sort by mem Naoya Horiguchi <naoya.horiguchi@nec.com>: Patch series "tools/vm/page-types.c: a few improvements": tools/vm/page-types.c: make walk_file() aware of address range option tools/vm/page-types.c: move show_file() to summary output tools/vm/page-types.c: print file offset in hexadecimal Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: Patch series "memblock: cleanup memblock_free interface", v2: arch_numa: simplify numa_distance allocation xen/x86: free_p2m_page: use memblock_free_ptr() to free a virtual pointer memblock: drop memblock_free_early_nid() and memblock_free_early() memblock: stop aliasing __memblock_free_late with memblock_free_late memblock: rename memblock_free to memblock_phys_free memblock: use memblock_free for freeing virtual pointers Subsystem: mm/oom-kill Sultan Alsawaf <sultan@kerneltoast.com>: mm: mark the OOM reaper thread as freezable Subsystem: mm/hugetlbfs Zhenguo Yao <yaozhenguo1@gmail.com>: hugetlbfs: extend the definition of hugepages parameter to support node allocation Subsystem: mm/migration John Hubbard <jhubbard@nvidia.com>: mm/migrate: de-duplicate migrate_reason strings Yang Shi <shy828301@gmail.com>: mm: migrate: make demotion knob depend on migration Subsystem: mm/thp "George G. Davis" <davis.george@siemens.com>: selftests/vm/transhuge-stress: fix ram size thinko Rongwei Wang <rongwei.wang@linux.alibaba.com>: Patch series "fix two bugs for file THP": mm, thp: lock filemap when truncating page cache mm, thp: fix incorrect unmap behavior for private pages Subsystem: mm/readahead Lin Feng <linf@wangsu.com>: mm/readahead.c: fix incorrect comments for get_init_ra_size Subsystem: mm/nommu Kefeng Wang <wangkefeng.wang@huawei.com>: mm: nommu: kill arch_get_unmapped_area() Subsystem: mm/ksm "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: selftest/vm: fix ksm selftest to run with different NUMA topologies Pedro Demarchi Gomes <pedrodemargomes@gmail.com>: selftests: vm: add KSM huge pages merging time test Subsystem: mm/vmstat Liu Shixin <liushixin2@huawei.com>: mm/vmstat: annotate data race for zone->free_area[order].nr_free Lin Feng <linf@wangsu.com>: mm: vmstat.c: make extfrag_index show more pretty Subsystem: mm/madvise David Hildenbrand <david@redhat.com>: selftests/vm: make MADV_POPULATE_(READ|WRITE) use in-tree headers Subsystem: mm/memory-hotplug Tang Yizhou <tangyizhou@huawei.com>: mm/memory_hotplug: add static qualifier for online_policy_to_str() David Hildenbrand <david@redhat.com>: Patch series "memory-hotplug.rst: document the "auto-movable" online policy": memory-hotplug.rst: fix two instances of "movablecore" that should be "movable_node" memory-hotplug.rst: fix wrong /sys/module/memory_hotplug/parameters/ path memory-hotplug.rst: document the "auto-movable" online policy Patch series "mm/memory_hotplug: Kconfig and 32 bit cleanups": mm/memory_hotplug: remove CONFIG_X86_64_ACPI_NUMA dependency from CONFIG_MEMORY_HOTPLUG mm/memory_hotplug: remove CONFIG_MEMORY_HOTPLUG_SPARSE mm/memory_hotplug: restrict CONFIG_MEMORY_HOTPLUG to 64 bit mm/memory_hotplug: remove HIGHMEM leftovers mm/memory_hotplug: remove stale function declarations x86: remove memory hotplug support on X86_32 Patch series "mm/memory_hotplug: full support for add_memory_driver_managed() with CONFIG_ARCH_KEEP_MEMBLOCK", v2: mm/memory_hotplug: handle memblock_add_node() failures in add_memory_resource() memblock: improve MEMBLOCK_HOTPLUG documentation memblock: allow to specify flags with memblock_add_node() memblock: add MEMBLOCK_DRIVER_MANAGED to mimic IORESOURCE_SYSRAM_DRIVER_MANAGED mm/memory_hotplug: indicate MEMBLOCK_DRIVER_MANAGED with IORESOURCE_SYSRAM_DRIVER_MANAGED Subsystem: mm/rmap Alistair Popple <apopple@nvidia.com>: mm/rmap.c: avoid double faults migrating device private pages Subsystem: mm/zsmalloc Miaohe Lin <linmiaohe@huawei.com>: mm/zsmalloc.c: close race window between zs_pool_dec_isolated() and zs_unregister_migration() Subsystem: mm/highmem Ira Weiny <ira.weiny@intel.com>: mm/highmem: remove deprecated kmap_atomic Subsystem: mm/zram Jaewon Kim <jaewon31.kim@samsung.com>: zram_drv: allow reclaim on bio_alloc Dan Carpenter <dan.carpenter@oracle.com>: zram: off by one in read_block_state() Brian Geffon <bgeffon@google.com>: zram: introduce an aged idle interface Subsystem: mm/cleanups Stephen Kitt <steve@sk2.org>: mm: remove HARDENED_USERCOPY_FALLBACK Mianhan Liu <liumh1@shanghaitech.edu.cn>: include/linux/mm.h: move nr_free_buffer_pages from swap.h to mm.h Subsystem: mm/kfence Marco Elver <elver@google.com>: stacktrace: move filter_irq_stacks() to kernel/stacktrace.c kfence: count unexpectedly skipped allocations kfence: move saving stack trace of allocations into __kfence_alloc() kfence: limit currently covered allocations when pool nearly full kfence: add note to documentation about skipping covered allocations kfence: test: use kunit_skip() to skip tests kfence: shorten critical sections of alloc/free kfence: always use static branches to guard kfence_alloc() kfence: default to dynamic branch instead of static keys mode Subsystem: mm/damon Geert Uytterhoeven <geert@linux-m68k.org>: mm/damon: grammar s/works/work/ SeongJae Park <sjpark@amazon.de>: Documentation/vm: move user guides to admin-guide/mm/ SeongJae Park <sj@kernel.org>: MAINTAINERS: update SeongJae's email address SeongJae Park <sjpark@amazon.de>: docs/vm/damon: remove broken reference include/linux/damon.h: fix kernel-doc comments for 'damon_callback' SeongJae Park <sj@kernel.org>: mm/damon/core: print kdamond start log in debug mode only Changbin Du <changbin.du@gmail.com>: mm/damon: remove unnecessary do_exit() from kdamond mm/damon: needn't hold kdamond_lock to print pid of kdamond Colin Ian King <colin.king@canonical.com>: mm/damon/core: nullify pointer ctx->kdamond with a NULL SeongJae Park <sj@kernel.org>: Patch series "Implement Data Access Monitoring-based Memory Operation Schemes": mm/damon/core: account age of target regions mm/damon/core: implement DAMON-based Operation Schemes (DAMOS) mm/damon/vaddr: support DAMON-based Operation Schemes mm/damon/dbgfs: support DAMON-based Operation Schemes mm/damon/schemes: implement statistics feature selftests/damon: add 'schemes' debugfs tests Docs/admin-guide/mm/damon: document DAMON-based Operation Schemes Patch series "DAMON: Support Physical Memory Address Space Monitoring:: mm/damon/dbgfs: allow users to set initial monitoring target regions mm/damon/dbgfs-test: add a unit test case for 'init_regions' Docs/admin-guide/mm/damon: document 'init_regions' feature mm/damon/vaddr: separate commonly usable functions mm/damon: implement primitives for physical address space monitoring mm/damon/dbgfs: support physical memory monitoring Docs/DAMON: document physical memory monitoring support Rikard Falkeborn <rikard.falkeborn@gmail.com>: mm/damon/vaddr: constify static mm_walk_ops Rongwei Wang <rongwei.wang@linux.alibaba.com>: mm/damon/dbgfs: remove unnecessary variables SeongJae Park <sj@kernel.org>: mm/damon/paddr: support the pageout scheme mm/damon/schemes: implement size quota for schemes application speed control mm/damon/schemes: skip already charged targets and regions mm/damon/schemes: implement time quota mm/damon/dbgfs: support quotas of schemes mm/damon/selftests: support schemes quotas mm/damon/schemes: prioritize regions within the quotas mm/damon/vaddr,paddr: support pageout prioritization mm/damon/dbgfs: support prioritization weights tools/selftests/damon: update for regions prioritization of schemes mm/damon/schemes: activate schemes based on a watermarks mechanism mm/damon/dbgfs: support watermarks selftests/damon: support watermarks mm/damon: introduce DAMON-based Reclamation (DAMON_RECLAIM) Documentation/admin-guide/mm/damon: add a document for DAMON_RECLAIM Xin Hao <xhao@linux.alibaba.com>: Patch series "mm/damon: Fix some small bugs", v4: mm/damon: remove unnecessary variable initialization mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on SeongJae Park <sj@kernel.org>: Patch series "Fix trivial nits in Documentation/admin-guide/mm": Docs/admin-guide/mm/damon/start: fix wrong example commands Docs/admin-guide/mm/damon/start: fix a wrong link Docs/admin-guide/mm/damon/start: simplify the content Docs/admin-guide/mm/pagemap: wordsmith page flags descriptions Changbin Du <changbin.du@gmail.com>: mm/damon: simplify stop mechanism Colin Ian King <colin.i.king@googlemail.com>: mm/damon: fix a few spelling mistakes in comments and a pr_debug message Changbin Du <changbin.du@gmail.com>: mm/damon: remove return value from before_terminate callback a/Documentation/admin-guide/blockdev/zram.rst | 8 a/Documentation/admin-guide/cgroup-v1/memory.rst | 11 a/Documentation/admin-guide/kernel-parameters.txt | 14 a/Documentation/admin-guide/mm/damon/index.rst | 1 a/Documentation/admin-guide/mm/damon/reclaim.rst | 235 +++ a/Documentation/admin-guide/mm/damon/start.rst | 140 + a/Documentation/admin-guide/mm/damon/usage.rst | 117 + a/Documentation/admin-guide/mm/hugetlbpage.rst | 42 a/Documentation/admin-guide/mm/memory-hotplug.rst | 147 +- a/Documentation/admin-guide/mm/pagemap.rst | 75 - a/Documentation/core-api/memory-hotplug.rst | 3 a/Documentation/dev-tools/kfence.rst | 23 a/Documentation/translations/zh_CN/core-api/memory-hotplug.rst | 4 a/Documentation/vm/damon/design.rst | 29 a/Documentation/vm/damon/faq.rst | 5 a/Documentation/vm/damon/index.rst | 1 a/Documentation/vm/page_owner.rst | 23 a/MAINTAINERS | 2 a/Makefile | 15 a/arch/Kconfig | 28 a/arch/alpha/kernel/core_irongate.c | 6 a/arch/arc/mm/init.c | 6 a/arch/arm/mach-hisi/platmcpm.c | 2 a/arch/arm/mach-rpc/ecard.c | 2 a/arch/arm/mm/init.c | 2 a/arch/arm64/Kconfig | 4 a/arch/arm64/mm/kasan_init.c | 16 a/arch/arm64/mm/mmu.c | 4 a/arch/ia64/mm/contig.c | 2 a/arch/ia64/mm/init.c | 2 a/arch/m68k/mm/mcfmmu.c | 3 a/arch/m68k/mm/motorola.c | 6 a/arch/mips/loongson64/init.c | 4 a/arch/mips/mm/init.c | 6 a/arch/mips/sgi-ip27/ip27-memory.c | 3 a/arch/mips/sgi-ip30/ip30-setup.c | 6 a/arch/powerpc/Kconfig | 1 a/arch/powerpc/configs/skiroot_defconfig | 1 a/arch/powerpc/include/asm/machdep.h | 2 a/arch/powerpc/include/asm/sections.h | 13 a/arch/powerpc/kernel/dt_cpu_ftrs.c | 8 a/arch/powerpc/kernel/paca.c | 8 a/arch/powerpc/kernel/setup-common.c | 4 a/arch/powerpc/kernel/setup_64.c | 6 a/arch/powerpc/kernel/smp.c | 2 a/arch/powerpc/mm/book3s64/radix_tlb.c | 4 a/arch/powerpc/mm/hugetlbpage.c | 9 a/arch/powerpc/platforms/powernv/pci-ioda.c | 4 a/arch/powerpc/platforms/powernv/setup.c | 4 a/arch/powerpc/platforms/pseries/setup.c | 2 a/arch/powerpc/platforms/pseries/svm.c | 9 a/arch/riscv/kernel/setup.c | 10 a/arch/s390/include/asm/sections.h | 12 a/arch/s390/kernel/setup.c | 11 a/arch/s390/kernel/smp.c | 6 a/arch/s390/kernel/uv.c | 2 a/arch/s390/mm/init.c | 3 a/arch/s390/mm/kasan_init.c | 2 a/arch/sh/boards/mach-ap325rxa/setup.c | 2 a/arch/sh/boards/mach-ecovec24/setup.c | 4 a/arch/sh/boards/mach-kfr2r09/setup.c | 2 a/arch/sh/boards/mach-migor/setup.c | 2 a/arch/sh/boards/mach-se/7724/setup.c | 4 a/arch/sparc/kernel/smp_64.c | 4 a/arch/um/kernel/mem.c | 4 a/arch/x86/Kconfig | 6 a/arch/x86/kernel/setup.c | 4 a/arch/x86/kernel/setup_percpu.c | 2 a/arch/x86/mm/init.c | 2 a/arch/x86/mm/init_32.c | 31 a/arch/x86/mm/kasan_init_64.c | 4 a/arch/x86/mm/numa.c | 2 a/arch/x86/mm/numa_emulation.c | 2 a/arch/x86/xen/mmu_pv.c | 8 a/arch/x86/xen/p2m.c | 4 a/arch/x86/xen/setup.c | 6 a/drivers/base/Makefile | 2 a/drivers/base/arch_numa.c | 96 + a/drivers/base/node.c | 9 a/drivers/block/zram/zram_drv.c | 66 a/drivers/firmware/efi/memmap.c | 2 a/drivers/hwmon/occ/p9_sbe.c | 1 a/drivers/macintosh/smu.c | 2 a/drivers/mmc/core/mmc_test.c | 1 a/drivers/mtd/mtdcore.c | 1 a/drivers/of/kexec.c | 4 a/drivers/of/of_reserved_mem.c | 5 a/drivers/rapidio/devices/rio_mport_cdev.c | 9 a/drivers/s390/char/sclp_early.c | 4 a/drivers/usb/early/xhci-dbc.c | 10 a/drivers/virtio/Kconfig | 2 a/drivers/xen/swiotlb-xen.c | 4 a/fs/d_path.c | 8 a/fs/exec.c | 4 a/fs/ocfs2/alloc.c | 21 a/fs/ocfs2/dlm/dlmrecovery.c | 1 a/fs/ocfs2/file.c | 8 a/fs/ocfs2/inode.c | 4 a/fs/ocfs2/journal.c | 28 a/fs/ocfs2/journal.h | 3 a/fs/ocfs2/super.c | 40 a/fs/open.c | 16 a/fs/posix_acl.c | 3 a/fs/proc/task_mmu.c | 28 a/fs/super.c | 3 a/include/asm-generic/sections.h | 14 a/include/linux/backing-dev-defs.h | 3 a/include/linux/backing-dev.h | 1 a/include/linux/cma.h | 1 a/include/linux/compiler-gcc.h | 8 a/include/linux/compiler_attributes.h | 10 a/include/linux/compiler_types.h | 12 a/include/linux/cpuset.h | 17 a/include/linux/damon.h | 258 +++ a/include/linux/fs.h | 1 a/include/linux/gfp.h | 8 a/include/linux/highmem.h | 28 a/include/linux/hugetlb.h | 36 a/include/linux/io-mapping.h | 6 a/include/linux/kasan.h | 8 a/include/linux/kernel.h | 1 a/include/linux/kfence.h | 21 a/include/linux/memblock.h | 48 a/include/linux/memcontrol.h | 9 a/include/linux/memory.h | 26 a/include/linux/memory_hotplug.h | 3 a/include/linux/mempolicy.h | 5 a/include/linux/migrate.h | 23 a/include/linux/migrate_mode.h | 13 a/include/linux/mm.h | 57 a/include/linux/mm_types.h | 2 a/include/linux/mmzone.h | 41 a/include/linux/node.h | 4 a/include/linux/page-flags.h | 2 a/include/linux/percpu.h | 6 a/include/linux/sched/mm.h | 25 a/include/linux/slab.h | 181 +- a/include/linux/slub_def.h | 13 a/include/linux/stackdepot.h | 8 a/include/linux/stacktrace.h | 1 a/include/linux/swap.h | 1 a/include/linux/vmalloc.h | 24 a/include/trace/events/mmap_lock.h | 50 a/include/trace/events/vmscan.h | 42 a/include/trace/events/writeback.h | 7 a/init/Kconfig | 2 a/init/initramfs.c | 4 a/init/main.c | 6 a/kernel/cgroup/cpuset.c | 23 a/kernel/cpu.c | 2 a/kernel/dma/swiotlb.c | 6 a/kernel/exit.c | 2 a/kernel/extable.c | 2 a/kernel/fork.c | 51 a/kernel/kexec_file.c | 5 a/kernel/kthread.c | 21 a/kernel/locking/lockdep.c | 15 a/kernel/printk/printk.c | 4 a/kernel/sched/core.c | 37 a/kernel/sched/sched.h | 4 a/kernel/sched/topology.c | 1 a/kernel/stacktrace.c | 30 a/kernel/tsacct.c | 2 a/kernel/workqueue.c | 2 a/lib/Kconfig.debug | 2 a/lib/Kconfig.kfence | 26 a/lib/bootconfig.c | 2 a/lib/cpumask.c | 6 a/lib/stackdepot.c | 76 - a/lib/test_kasan.c | 26 a/lib/test_kasan_module.c | 2 a/lib/test_vmalloc.c | 6 a/mm/Kconfig | 10 a/mm/backing-dev.c | 65 a/mm/cma.c | 26 a/mm/compaction.c | 12 a/mm/damon/Kconfig | 24 a/mm/damon/Makefile | 4 a/mm/damon/core.c | 500 ++++++- a/mm/damon/dbgfs-test.h | 56 a/mm/damon/dbgfs.c | 486 +++++- a/mm/damon/paddr.c | 275 +++ a/mm/damon/prmtv-common.c | 133 + a/mm/damon/prmtv-common.h | 20 a/mm/damon/reclaim.c | 356 ++++ a/mm/damon/vaddr-test.h | 2 a/mm/damon/vaddr.c | 167 +- a/mm/debug.c | 20 a/mm/debug_vm_pgtable.c | 7 a/mm/filemap.c | 78 - a/mm/gup.c | 5 a/mm/highmem.c | 6 a/mm/hugetlb.c | 713 +++++++++- a/mm/hugetlb_cgroup.c | 3 a/mm/internal.h | 26 a/mm/kasan/common.c | 8 a/mm/kasan/generic.c | 16 a/mm/kasan/kasan.h | 2 a/mm/kasan/shadow.c | 5 a/mm/kfence/core.c | 214 ++- a/mm/kfence/kfence.h | 2 a/mm/kfence/kfence_test.c | 14 a/mm/khugepaged.c | 10 a/mm/list_lru.c | 58 a/mm/memblock.c | 35 a/mm/memcontrol.c | 217 +-- a/mm/memory-failure.c | 117 + a/mm/memory.c | 166 +- a/mm/memory_hotplug.c | 57 a/mm/mempolicy.c | 143 +- a/mm/migrate.c | 61 a/mm/mmap.c | 2 a/mm/mprotect.c | 5 a/mm/mremap.c | 86 - a/mm/nommu.c | 6 a/mm/oom_kill.c | 27 a/mm/page-writeback.c | 13 a/mm/page_alloc.c | 119 - a/mm/page_ext.c | 2 a/mm/page_isolation.c | 29 a/mm/percpu.c | 24 a/mm/readahead.c | 2 a/mm/rmap.c | 8 a/mm/shmem.c | 44 a/mm/slab.c | 16 a/mm/slab_common.c | 8 a/mm/slub.c | 117 - a/mm/sparse-vmemmap.c | 2 a/mm/sparse.c | 6 a/mm/swap.c | 23 a/mm/swapfile.c | 6 a/mm/userfaultfd.c | 8 a/mm/vmalloc.c | 107 + a/mm/vmpressure.c | 2 a/mm/vmscan.c | 194 ++ a/mm/vmstat.c | 76 - a/mm/zsmalloc.c | 7 a/net/ipv4/tcp.c | 1 a/net/ipv4/udp.c | 1 a/net/netfilter/ipvs/ip_vs_ctl.c | 1 a/net/openvswitch/meter.c | 1 a/net/sctp/protocol.c | 1 a/scripts/checkpatch.pl | 3 a/scripts/decodecode | 2 a/scripts/spelling.txt | 18 a/security/Kconfig | 14 a/tools/testing/selftests/damon/debugfs_attrs.sh | 25 a/tools/testing/selftests/memory-hotplug/config | 1 a/tools/testing/selftests/vm/.gitignore | 1 a/tools/testing/selftests/vm/Makefile | 1 a/tools/testing/selftests/vm/hugepage-mremap.c | 161 ++ a/tools/testing/selftests/vm/ksm_tests.c | 154 ++ a/tools/testing/selftests/vm/madv_populate.c | 15 a/tools/testing/selftests/vm/run_vmtests.sh | 11 a/tools/testing/selftests/vm/transhuge-stress.c | 2 a/tools/testing/selftests/vm/userfaultfd.c | 157 +- a/tools/vm/page-types.c | 38 a/tools/vm/page_owner_sort.c | 94 + b/Documentation/admin-guide/mm/index.rst | 2 b/Documentation/vm/index.rst | 26 260 files changed, 6448 insertions(+), 2327 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-10-28 21:35 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-10-28 21:35 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 11 patches, based on 411a44c24a561e449b592ff631b7ae321f1eb559. Subsystems affected by this patch series: mm/memcg mm/memory-failure mm/oom-kill ocfs2 mm/secretmem mm/vmalloc mm/hugetlb mm/damon mm/tools Subsystem: mm/memcg Shakeel Butt <shakeelb@google.com>: memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT Subsystem: mm/memory-failure Yang Shi <shy828301@gmail.com>: mm: hwpoison: remove the unnecessary THP check mm: filemap: check if THP has hwpoisoned subpage for PMD page fault Subsystem: mm/oom-kill Suren Baghdasaryan <surenb@google.com>: mm/oom_kill.c: prevent a race between process_mrelease and exit_mmap Subsystem: ocfs2 Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>: ocfs2: fix race between searching chunks and release journal_head from buffer_head Subsystem: mm/secretmem Kees Cook <keescook@chromium.org>: mm/secretmem: avoid letting secretmem_users drop to zero Subsystem: mm/vmalloc Chen Wandun <chenwandun@huawei.com>: mm/vmalloc: fix numa spreading for large hash tables Subsystem: mm/hugetlb Rongwei Wang <rongwei.wang@linux.alibaba.com>: mm, thp: bail out early in collapse_file for writeback page Yang Shi <shy828301@gmail.com>: mm: khugepaged: skip huge page collapse for special files Subsystem: mm/damon SeongJae Park <sj@kernel.org>: mm/damon/core-test: fix wrong expectations for 'damon_split_regions_of()' Subsystem: mm/tools David Yang <davidcomponentone@gmail.com>: tools/testing/selftests/vm/split_huge_page_test.c: fix application of sizeof to pointer fs/ocfs2/suballoc.c | 22 ++++++++++------- include/linux/page-flags.h | 23 ++++++++++++++++++ mm/damon/core-test.h | 4 +-- mm/huge_memory.c | 2 + mm/khugepaged.c | 26 +++++++++++++------- mm/memory-failure.c | 28 +++++++++++----------- mm/memory.c | 9 +++++++ mm/oom_kill.c | 23 +++++++++--------- mm/page_alloc.c | 8 +++++- mm/secretmem.c | 2 - mm/vmalloc.c | 15 +++++++---- tools/testing/selftests/vm/split_huge_page_test.c | 2 - 12 files changed, 110 insertions(+), 54 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-10-18 22:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-10-18 22:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 19 patches, based on 519d81956ee277b4419c723adfb154603c2565ba. Subsystems affected by this patch series: mm/userfaultfd mm/migration ocfs2 mm/memblock mm/mempolicy mm/slub binfmt vfs mm/secretmem mm/thp misc Subsystem: mm/userfaultfd Peter Xu <peterx@redhat.com>: mm/userfaultfd: selftests: fix memory corruption with thp enabled Nadav Amit <namit@vmware.com>: userfaultfd: fix a race between writeprotect and exit_mmap() Subsystem: mm/migration Dave Hansen <dave.hansen@linux.intel.com>: Patch series "mm/migrate: 5.15 fixes for automatic demotion", v2: mm/migrate: optimize hotplug-time demotion order updates mm/migrate: add CPU hotplug to demotion #ifdef Huang Ying <ying.huang@intel.com>: mm/migrate: fix CPUHP state to update node demotion order Subsystem: ocfs2 Jan Kara <jack@suse.cz>: ocfs2: fix data corruption after conversion from inline format Valentin Vidic <vvidic@valentin-vidic.from.hr>: ocfs2: mount fails with buffer overflow in strlen Subsystem: mm/memblock Peng Fan <peng.fan@nxp.com>: memblock: check memory total_size Subsystem: mm/mempolicy Eric Dumazet <edumazet@google.com>: mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind() Subsystem: mm/slub Miaohe Lin <linmiaohe@huawei.com>: Patch series "Fixups for slub": mm, slub: fix two bugs in slab_debug_trace_open() mm, slub: fix mismatch between reconstructed freelist depth and cnt mm, slub: fix potential memoryleak in kmem_cache_open() mm, slub: fix potential use-after-free in slab_debugfs_fops mm, slub: fix incorrect memcg slab count for bulk free Subsystem: binfmt Lukas Bulwahn <lukas.bulwahn@gmail.com>: elfcore: correct reference to CONFIG_UML Subsystem: vfs "Matthew Wilcox (Oracle)" <willy@infradead.org>: vfs: check fd has read access in kernel_read_file_from_fd() Subsystem: mm/secretmem Sean Christopherson <seanjc@google.com>: mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem() Subsystem: mm/thp Marek Szyprowski <m.szyprowski@samsung.com>: mm/thp: decrease nr_thps in file's mapping on THP split Subsystem: misc Andrej Shadura <andrew.shadura@collabora.co.uk>: mailmap: add Andrej Shadura .mailmap | 2 + fs/kernel_read_file.c | 2 - fs/ocfs2/alloc.c | 46 ++++++----------------- fs/ocfs2/super.c | 14 +++++-- fs/userfaultfd.c | 12 ++++-- include/linux/cpuhotplug.h | 4 ++ include/linux/elfcore.h | 2 - include/linux/memory.h | 5 ++ include/linux/secretmem.h | 2 - mm/huge_memory.c | 6 ++- mm/memblock.c | 2 - mm/mempolicy.c | 16 ++------ mm/migrate.c | 62 ++++++++++++++++++------------- mm/page_ext.c | 4 -- mm/slab.c | 4 +- mm/slub.c | 31 ++++++++++++--- tools/testing/selftests/vm/userfaultfd.c | 23 ++++++++++- 17 files changed, 138 insertions(+), 99 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-24 22:42 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-09-24 22:42 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 16 patches, based on 7d42e98182586f57f376406d033f05fe135edb75. Subsystems affected by this patch series: mm/memory-failure mm/kasan mm/damon xtensa mm/shmem ocfs2 scripts mm/tools lib mm/pagecache mm/debug sh mm/kasan mm/memory-failure mm/pagemap Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable() Subsystem: mm/kasan Marco Elver <elver@google.com>: kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS Subsystem: mm/damon Adam Borowski <kilobyte@angband.pl>: mm/damon: don't use strnlen() with known-bogus source length Subsystem: xtensa Guenter Roeck <linux@roeck-us.net>: xtensa: increase size of gcc stack frame check Subsystem: mm/shmem Liu Yuntao <liuyuntao10@huawei.com>: mm/shmem.c: fix judgment error in shmem_is_huge() Subsystem: ocfs2 Wengang Wang <wen.gang.wang@oracle.com>: ocfs2: drop acl cache for directories too Subsystem: scripts Miles Chen <miles.chen@mediatek.com>: scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error Subsystem: mm/tools Changbin Du <changbin.du@gmail.com>: tools/vm/page-types: remove dependency on opt_file for idle page tracking Subsystem: lib Paul Menzel <pmenzel@molgen.mpg.de>: lib/zlib_inflate/inffast: check config in C to avoid unused function warning Subsystem: mm/pagecache Minchan Kim <minchan@kernel.org>: mm: fs: invalidate bh_lrus for only cold path Subsystem: mm/debug Weizhao Ouyang <o451686892@gmail.com>: mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN mm/debug: sync up latest migrate_reason to migrate_reason_names Subsystem: sh Geert Uytterhoeven <geert+renesas@glider.be>: sh: pgtable-3level: fix cast to pointer from integer of different size Subsystem: mm/kasan Nathan Chancellor <nathan@kernel.org>: kasan: always respect CONFIG_KASAN_STACK Subsystem: mm/memory-failure Qi Zheng <zhengqi.arch@bytedance.com>: mm/memory_failure: fix the missing pte_unmap() call Subsystem: mm/pagemap Chen Jun <chenjun102@huawei.com>: mm: fix uninitialized use in overcommit_policy_handler arch/sh/include/asm/pgtable-3level.h | 2 +- fs/buffer.c | 8 ++++++-- fs/ocfs2/dlmglue.c | 3 ++- include/linux/buffer_head.h | 4 ++-- include/linux/migrate.h | 6 +++++- lib/Kconfig.debug | 2 +- lib/Kconfig.kasan | 2 ++ lib/zlib_inflate/inffast.c | 13 ++++++------- mm/damon/dbgfs-test.h | 16 ++++++++-------- mm/debug.c | 4 +++- mm/memory-failure.c | 12 ++++++------ mm/shmem.c | 4 ++-- mm/swap.c | 19 ++++++++++++++++--- mm/util.c | 4 ++-- scripts/Makefile.kasan | 3 ++- scripts/sorttable.c | 4 ++++ tools/vm/page-types.c | 2 +- 17 files changed, 69 insertions(+), 39 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-10 3:09 Andrew Morton 2021-09-10 17:11 ` incoming Kees Cook 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-09-10 3:09 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits More post linux-next material. 9 patches, based on f154c806676ad7153c6e161f30c53a44855329d6. Subsystems affected by this patch series: mm/slab-generic rapidio mm/debug Subsystem: mm/slab-generic "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: move kvmalloc-related functions to slab.h Subsystem: rapidio Kees Cook <keescook@chromium.org>: rapidio: avoid bogus __alloc_size warning Subsystem: mm/debug Kees Cook <keescook@chromium.org>: Patch series "Add __alloc_size() for better bounds checking", v2: Compiler Attributes: add __alloc_size() for better bounds checking checkpatch: add __alloc_size() to known $Attribute slab: clean up function declarations slab: add __alloc_size attributes for better bounds checking mm/page_alloc: add __alloc_size attributes for better bounds checking percpu: add __alloc_size attributes for better bounds checking mm/vmalloc: add __alloc_size attributes for better bounds checking Makefile | 15 +++ drivers/of/kexec.c | 1 drivers/rapidio/devices/rio_mport_cdev.c | 9 +- include/linux/compiler_attributes.h | 6 + include/linux/gfp.h | 2 include/linux/mm.h | 34 -------- include/linux/percpu.h | 3 include/linux/slab.h | 122 ++++++++++++++++++++++--------- include/linux/vmalloc.h | 11 ++ scripts/checkpatch.pl | 3 10 files changed, 132 insertions(+), 74 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-09-10 3:09 incoming Andrew Morton @ 2021-09-10 17:11 ` Kees Cook 2021-09-10 20:13 ` incoming Kees Cook 0 siblings, 1 reply; 530+ messages in thread From: Kees Cook @ 2021-09-10 17:11 UTC (permalink / raw) To: Linus Torvalds, Andrew Morton; +Cc: linux-mm, mm-commits On Thu, Sep 09, 2021 at 08:09:48PM -0700, Andrew Morton wrote: > > More post linux-next material. > > 9 patches, based on f154c806676ad7153c6e161f30c53a44855329d6. > > Subsystems affected by this patch series: > > mm/slab-generic > rapidio > mm/debug > > Subsystem: mm/slab-generic > > "Matthew Wilcox (Oracle)" <willy@infradead.org>: > mm: move kvmalloc-related functions to slab.h > > Subsystem: rapidio > > Kees Cook <keescook@chromium.org>: > rapidio: avoid bogus __alloc_size warning > > Subsystem: mm/debug > > Kees Cook <keescook@chromium.org>: > Patch series "Add __alloc_size() for better bounds checking", v2: > Compiler Attributes: add __alloc_size() for better bounds checking > checkpatch: add __alloc_size() to known $Attribute > slab: clean up function declarations > slab: add __alloc_size attributes for better bounds checking > mm/page_alloc: add __alloc_size attributes for better bounds checking > percpu: add __alloc_size attributes for better bounds checking > mm/vmalloc: add __alloc_size attributes for better bounds checking Hi, FYI, in overnight build testing I found yet another corner case in GCC's handling of the __alloc_size attribute. It's the gift that keeps on giving. The fix is here: https://lore.kernel.org/lkml/20210910165851.3296624-1-keescook@chromium.org/ > > Makefile | 15 +++ > drivers/of/kexec.c | 1 > drivers/rapidio/devices/rio_mport_cdev.c | 9 +- > include/linux/compiler_attributes.h | 6 + > include/linux/gfp.h | 2 > include/linux/mm.h | 34 -------- > include/linux/percpu.h | 3 > include/linux/slab.h | 122 ++++++++++++++++++++++--------- > include/linux/vmalloc.h | 11 ++ > scripts/checkpatch.pl | 3 > 10 files changed, 132 insertions(+), 74 deletions(-) > -- Kees Cook ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-09-10 17:11 ` incoming Kees Cook @ 2021-09-10 20:13 ` Kees Cook 0 siblings, 0 replies; 530+ messages in thread From: Kees Cook @ 2021-09-10 20:13 UTC (permalink / raw) To: linux-kernel; +Cc: Linus Torvalds, Andrew Morton, linux-mm, mm-commits On Fri, Sep 10, 2021 at 10:11:53AM -0700, Kees Cook wrote: > On Thu, Sep 09, 2021 at 08:09:48PM -0700, Andrew Morton wrote: > > > > More post linux-next material. > > > > 9 patches, based on f154c806676ad7153c6e161f30c53a44855329d6. > > > > Subsystems affected by this patch series: > > > > mm/slab-generic > > rapidio > > mm/debug > > > > Subsystem: mm/slab-generic > > > > "Matthew Wilcox (Oracle)" <willy@infradead.org>: > > mm: move kvmalloc-related functions to slab.h > > > > Subsystem: rapidio > > > > Kees Cook <keescook@chromium.org>: > > rapidio: avoid bogus __alloc_size warning > > > > Subsystem: mm/debug > > > > Kees Cook <keescook@chromium.org>: > > Patch series "Add __alloc_size() for better bounds checking", v2: > > Compiler Attributes: add __alloc_size() for better bounds checking > > checkpatch: add __alloc_size() to known $Attribute > > slab: clean up function declarations > > slab: add __alloc_size attributes for better bounds checking > > mm/page_alloc: add __alloc_size attributes for better bounds checking > > percpu: add __alloc_size attributes for better bounds checking > > mm/vmalloc: add __alloc_size attributes for better bounds checking > > Hi, > > FYI, in overnight build testing I found yet another corner case in > GCC's handling of the __alloc_size attribute. It's the gift that keeps > on giving. The fix is here: > > https://lore.kernel.org/lkml/20210910165851.3296624-1-keescook@chromium.org/ I'm so glad it's Friday. Here's the v2 fix... *sigh* https://lore.kernel.org/lkml/20210910201132.3809437-1-keescook@chromium.org/ -Kees > > > > > Makefile | 15 +++ > > drivers/of/kexec.c | 1 > > drivers/rapidio/devices/rio_mport_cdev.c | 9 +- > > include/linux/compiler_attributes.h | 6 + > > include/linux/gfp.h | 2 > > include/linux/mm.h | 34 -------- > > include/linux/percpu.h | 3 > > include/linux/slab.h | 122 ++++++++++++++++++++++--------- > > include/linux/vmalloc.h | 11 ++ > > scripts/checkpatch.pl | 3 > > 10 files changed, 132 insertions(+), 74 deletions(-) > > > > -- > Kees Cook -- Kees Cook ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-09 1:08 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-09-09 1:08 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm A bunch of hotfixes, mostly cc:stable. 8 patches, based on 2d338201d5311bcd79d42f66df4cecbcbc5f4f2c. Subsystems affected by this patch series: mm/hmm mm/hugetlb mm/vmscan mm/pagealloc mm/pagemap mm/kmemleak mm/mempolicy mm/memblock Subsystem: mm/hmm Li Zhijian <lizhijian@cn.fujitsu.com>: mm/hmm: bypass devmap pte when all pfn requested flags are fulfilled Subsystem: mm/hugetlb Liu Zixian <liuzixian4@huawei.com>: mm/hugetlb: initialize hugetlb_usage in mm_init Subsystem: mm/vmscan Rik van Riel <riel@surriel.com>: mm,vmscan: fix divide by zero in get_scan_count Subsystem: mm/pagealloc Miaohe Lin <linmiaohe@huawei.com>: mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype Subsystem: mm/pagemap Liam Howlett <liam.howlett@oracle.com>: mmap_lock: change trace and locking order Subsystem: mm/kmemleak Naohiro Aota <naohiro.aota@wdc.com>: mm/kmemleak: allow __GFP_NOLOCKDEP passed to kmemleak's gfp Subsystem: mm/mempolicy yanghui <yanghui.def@bytedance.com>: mm/mempolicy: fix a race between offset_il_node and mpol_rebind_task Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: nds32/setup: remove unused memblock_region variable in setup_memory() arch/nds32/kernel/setup.c | 1 - include/linux/hugetlb.h | 9 +++++++++ include/linux/mmap_lock.h | 8 ++++---- kernel/fork.c | 1 + mm/hmm.c | 5 ++++- mm/kmemleak.c | 3 ++- mm/mempolicy.c | 17 +++++++++++++---- mm/page_alloc.c | 4 +++- mm/vmscan.c | 2 +- 9 files changed, 37 insertions(+), 13 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-08 22:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-09-08 22:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits This is the post-linux-next material, so it is based upon latest upstream to catch the now-merged dependencies. 10 patches, based on 2d338201d5311bcd79d42f66df4cecbcbc5f4f2c. Subsystems affected by this patch series: mm/vmstat mm/migration compat Subsystem: mm/vmstat Ingo Molnar <mingo@elte.hu>: mm/vmstat: protect per cpu variables with preempt disable on RT Subsystem: mm/migration Baolin Wang <baolin.wang@linux.alibaba.com>: mm: migrate: introduce a local variable to get the number of pages mm: migrate: fix the incorrect function name in comments mm: migrate: change to use bool type for 'page_was_mapped' Subsystem: compat Arnd Bergmann <arnd@arndb.de>: Patch series "compat: remove compat_alloc_user_space", v5: kexec: move locking into do_kexec_load kexec: avoid compat_alloc_user_space mm: simplify compat_sys_move_pages mm: simplify compat numa syscalls compat: remove some compat entry points arch: remove compat_alloc_user_space arch/arm64/include/asm/compat.h | 5 arch/arm64/include/asm/uaccess.h | 11 - arch/arm64/include/asm/unistd32.h | 10 - arch/arm64/lib/Makefile | 2 arch/arm64/lib/copy_in_user.S | 77 ---------- arch/mips/cavium-octeon/octeon-memcpy.S | 2 arch/mips/include/asm/compat.h | 8 - arch/mips/include/asm/uaccess.h | 26 --- arch/mips/kernel/syscalls/syscall_n32.tbl | 10 - arch/mips/kernel/syscalls/syscall_o32.tbl | 10 - arch/mips/lib/memcpy.S | 11 - arch/parisc/include/asm/compat.h | 6 arch/parisc/include/asm/uaccess.h | 2 arch/parisc/kernel/syscalls/syscall.tbl | 8 - arch/parisc/lib/memcpy.c | 9 - arch/powerpc/include/asm/compat.h | 16 -- arch/powerpc/kernel/syscalls/syscall.tbl | 10 - arch/s390/include/asm/compat.h | 10 - arch/s390/include/asm/uaccess.h | 3 arch/s390/kernel/syscalls/syscall.tbl | 10 - arch/s390/lib/uaccess.c | 63 -------- arch/sparc/include/asm/compat.h | 19 -- arch/sparc/kernel/process_64.c | 2 arch/sparc/kernel/signal32.c | 12 - arch/sparc/kernel/signal_64.c | 8 - arch/sparc/kernel/syscalls/syscall.tbl | 10 - arch/x86/entry/syscalls/syscall_32.tbl | 4 arch/x86/entry/syscalls/syscall_64.tbl | 2 arch/x86/include/asm/compat.h | 13 - arch/x86/include/asm/uaccess_64.h | 7 include/linux/compat.h | 39 +---- include/linux/uaccess.h | 10 - include/uapi/asm-generic/unistd.h | 10 - kernel/compat.c | 21 -- kernel/kexec.c | 105 +++++--------- kernel/sys_ni.c | 5 mm/mempolicy.c | 213 +++++++----------------------- mm/migrate.c | 69 +++++---- mm/vmstat.c | 48 ++++++ 39 files changed, 243 insertions(+), 663 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-08 2:52 Andrew Morton 2021-09-08 8:57 ` incoming Vlastimil Babka 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-09-08 2:52 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 147 patches, based on 7d2a07b769330c34b4deabeed939325c77a7ec2f. Subsystems affected by this patch series: mm/slub mm/memory-hotplug mm/rmap mm/ioremap mm/highmem mm/cleanups mm/secretmem mm/kfence mm/damon alpha percpu procfs misc core-kernel MAINTAINERS lib bitops checkpatch epoll init nilfs2 coredump fork pids criu kconfig selftests ipc mm/vmscan scripts Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: Patch series "SLUB: reduce irq disabled scope and make it RT compatible", v6: mm, slub: don't call flush_all() from slab_debug_trace_open() mm, slub: allocate private object map for debugfs listings mm, slub: allocate private object map for validate_slab_cache() mm, slub: don't disable irq for debug_check_no_locks_freed() mm, slub: remove redundant unfreeze_partials() from put_cpu_partial() mm, slub: extract get_partial() from new_slab_objects() mm, slub: dissolve new_slab_objects() into ___slab_alloc() mm, slub: return slab page from get_partial() and set c->page afterwards mm, slub: restructure new page checks in ___slab_alloc() mm, slub: simplify kmem_cache_cpu and tid setup mm, slub: move disabling/enabling irqs to ___slab_alloc() mm, slub: do initial checks in ___slab_alloc() with irqs enabled mm, slub: move disabling irqs closer to get_partial() in ___slab_alloc() mm, slub: restore irqs around calling new_slab() mm, slub: validate slab from partial list or page allocator before making it cpu slab mm, slub: check new pages with restored irqs mm, slub: stop disabling irqs around get_partial() mm, slub: move reset of c->page and freelist out of deactivate_slab() mm, slub: make locking in deactivate_slab() irq-safe mm, slub: call deactivate_slab() without disabling irqs mm, slub: move irq control into unfreeze_partials() mm, slub: discard slabs in unfreeze_partials() without irqs disabled mm, slub: detach whole partial list at once in unfreeze_partials() mm, slub: separate detaching of partial list in unfreeze_partials() from unfreezing mm, slub: only disable irq with spin_lock in __unfreeze_partials() mm, slub: don't disable irqs in slub_cpu_dead() mm, slab: split out the cpu offline variant of flush_slab() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm: slub: move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context mm: slub: make object_map_lock a raw_spinlock_t Vlastimil Babka <vbabka@suse.cz>: mm, slub: make slab_lock() disable irqs with PREEMPT_RT mm, slub: protect put_cpu_partial() with disabled irqs instead of cmpxchg mm, slub: use migrate_disable() on PREEMPT_RT mm, slub: convert kmem_cpu_slab protection to local_lock Subsystem: mm/memory-hotplug David Hildenbrand <david@redhat.com>: Patch series "memory-hotplug.rst: complete admin-guide overhaul", v3: memory-hotplug.rst: remove locking details from admin-guide memory-hotplug.rst: complete admin-guide overhaul Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: remove pfn_valid_within() and CONFIG_HOLES_IN_ZONE": mm: remove pfn_valid_within() and CONFIG_HOLES_IN_ZONE mm: memory_hotplug: cleanup after removal of pfn_valid_within() David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: preparatory patches for new online policy and memory": mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range() mm/memory_hotplug: remove nid parameter from arch_remove_memory() mm/memory_hotplug: remove nid parameter from remove_memory() and friends ACPI: memhotplug: memory resources cannot be enabled yet Patch series "mm/memory_hotplug: "auto-movable" online policy and memory groups", v3: mm: track present early pages per zone mm/memory_hotplug: introduce "auto-movable" online policy drivers/base/memory: introduce "memory groups" to logically group memory blocks mm/memory_hotplug: track present pages in memory groups ACPI: memhotplug: use a single static memory group for a single memory device dax/kmem: use a single static memory group for a single probed unit virtio-mem: use a single dynamic memory group for a single virtio-mem device mm/memory_hotplug: memory group aware "auto-movable" online policy mm/memory_hotplug: improved dynamic memory group aware "auto-movable" online policy Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixups for memory hotplug": mm/memory_hotplug: use helper zone_is_zone_device() to simplify the code Subsystem: mm/rmap Muchun Song <songmuchun@bytedance.com>: mm: remove redundant compound_head() calling Subsystem: mm/ioremap Christoph Hellwig <hch@lst.de>: riscv: only select GENERIC_IOREMAP if MMU support is enabled Patch series "small ioremap cleanups": mm: move ioremap_page_range to vmalloc.c mm: don't allow executable ioremap mappings Weizhao Ouyang <o451686892@gmail.com>: mm/early_ioremap.c: remove redundant early_ioremap_shutdown() Subsystem: mm/highmem Sebastian Andrzej Siewior <bigeasy@linutronix.de>: highmem: don't disable preemption on RT in kmap_atomic() Subsystem: mm/cleanups Changbin Du <changbin.du@gmail.com>: mm: in_irq() cleanup Muchun Song <songmuchun@bytedance.com>: mm: introduce PAGEFLAGS_MASK to replace ((1UL << NR_PAGEFLAGS) - 1) Subsystem: mm/secretmem Jordy Zomer <jordy@jordyzomer.github.io>: mm/secretmem: use refcount_t instead of atomic_t Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: show cpu and timestamp in alloc/free info kfence: test: fail fast if disabled at boot Subsystem: mm/damon SeongJae Park <sjpark@amazon.de>: Patch series "Introduce Data Access MONitor (DAMON)", v34: mm: introduce Data Access MONitor (DAMON) mm/damon/core: implement region-based sampling mm/damon: adaptively adjust regions mm/idle_page_tracking: make PG_idle reusable mm/damon: implement primitives for the virtual memory address spaces mm/damon: add a tracepoint mm/damon: implement a debugfs-based user space interface mm/damon/dbgfs: export kdamond pid to the user space mm/damon/dbgfs: support multiple contexts Documentation: add documents for DAMON mm/damon: add kunit tests mm/damon: add user space selftests MAINTAINERS: update for DAMON Subsystem: alpha Randy Dunlap <rdunlap@infradead.org>: alpha: agp: make empty macros use do-while-0 style alpha: pci-sysfs: fix all kernel-doc warnings Subsystem: percpu Greg Kroah-Hartman <gregkh@linuxfoundation.org>: percpu: remove export of pcpu_base_addr Subsystem: procfs Feng Zhou <zhoufeng.zf@bytedance.com>: fs/proc/kcore.c: add mmap interface Christoph Hellwig <hch@lst.de>: proc: stop using seq_get_buf in proc_task_name Ohhoon Kwon <ohoono.kwon@samsung.com>: connector: send event on write to /proc/[pid]/comm Subsystem: misc Colin Ian King <colin.king@canonical.com>: arch: Kconfig: fix spelling mistake "seperate" -> "separate" Andy Shevchenko <andriy.shevchenko@linux.intel.com>: include/linux/once.h: fix trivia typo Not -> Note Daniel Lezcano <daniel.lezcano@linaro.org>: Patch series "Add Hz macros", v3: units: change from 'L' to 'UL' units: add the HZ macros thermal/drivers/devfreq_cooling: use HZ macros devfreq: use HZ macros iio/drivers/as73211: use HZ macros hwmon/drivers/mr75203: use HZ macros iio/drivers/hid-sensor: use HZ macros i2c/drivers/ov02q10: use HZ macros mtd/drivers/nand: use HZ macros phy/drivers/stm32: use HZ macros Subsystem: core-kernel Yang Yang <yang.yang29@zte.com.cn>: kernel/acct.c: use dedicated helper to access rlimit values Pavel Skripkin <paskripkin@gmail.com>: profiling: fix shift-out-of-bounds bugs Subsystem: MAINTAINERS Nathan Chancellor <nathan@kernel.org>: MAINTAINERS: update ClangBuiltLinux mailing list Documentation/llvm: update mailing list Documentation/llvm: update IRC location Subsystem: lib Geert Uytterhoeven <geert@linux-m68k.org>: Patch series "math: RATIONAL and RATIONAL_KUNIT_TEST improvements": math: make RATIONAL tristate math: RATIONAL_KUNIT_TEST should depend on RATIONAL instead of selecting it Matteo Croce <mcroce@microsoft.com>: Patch series "lib/string: optimized mem* functions", v2: lib/string: optimized memcpy lib/string: optimized memmove lib/string: optimized memset Daniel Latypov <dlatypov@google.com>: lib/test: convert test_sort.c to use KUnit Randy Dunlap <rdunlap@infradead.org>: lib/dump_stack: correct kernel-doc notation lib/iov_iter.c: fix kernel-doc warnings Subsystem: bitops Yury Norov <yury.norov@gmail.com>: Patch series "Resend bitmap patches": bitops: protect find_first_{,zero}_bit properly bitops: move find_bit_*_le functions from le.h to find.h include: move find.h from asm_generic to linux arch: remove GENERIC_FIND_FIRST_BIT entirely lib: add find_first_and_bit() cpumask: use find_first_and_bit() all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate tools: sync tools/bitmap with mother linux cpumask: replace cpumask_next_* with cpumask_first_* where appropriate include/linux: move for_each_bit() macros from bitops.h to find.h find: micro-optimize for_each_{set,clear}_bit() bitops: replace for_each_*_bit_from() with for_each_*_bit() where appropriate Andy Shevchenko <andriy.shevchenko@linux.intel.com>: tools: rename bitmap_alloc() to bitmap_zalloc() Yury Norov <yury.norov@gmail.com>: mm/percpu: micro-optimize pcpu_is_populated() bitmap: unify find_bit operations lib: bitmap: add performance test for bitmap_print_to_pagebuf vsprintf: rework bitmap_list_string Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: support wide strings Mimi Zohar <zohar@linux.ibm.com>: checkpatch: make email address check case insensitive Joe Perches <joe@perches.com>: checkpatch: improve GIT_COMMIT_ID test Subsystem: epoll Nicholas Piggin <npiggin@gmail.com>: fs/epoll: use a per-cpu counter for user's watches count Subsystem: init Rasmus Villemoes <linux@rasmusvillemoes.dk>: init: move usermodehelper_enable() to populate_rootfs() Kefeng Wang <wangkefeng.wang@huawei.com>: trap: cleanup trap_init() Subsystem: nilfs2 Nanyong Sun <sunnanyong@huawei.com>: Patch series "nilfs2: fix incorrect usage of kobject": nilfs2: fix memory leak in nilfs_sysfs_create_device_group nilfs2: fix NULL pointer in nilfs_##name##_attr_release nilfs2: fix memory leak in nilfs_sysfs_create_##name##_group nilfs2: fix memory leak in nilfs_sysfs_delete_##name##_group nilfs2: fix memory leak in nilfs_sysfs_create_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group Zhen Lei <thunder.leizhen@huawei.com>: nilfs2: use refcount_dec_and_lock() to fix potential UAF Subsystem: coredump David Oberhollenzer <david.oberhollenzer@sigma-star.at>: fs/coredump.c: log if a core dump is aborted due to changed file permissions QiuXi <qiuxi1@huawei.com>: coredump: fix memleak in dump_vma_snapshot() Subsystem: fork Christoph Hellwig <hch@lst.de>: kernel/fork.c: unexport get_{mm,task}_exe_file Subsystem: pids Takahiro Itazuri <itazur@amazon.com>: pid: cleanup the stale comment mentioning pidmap_init(). Subsystem: criu Cyrill Gorcunov <gorcunov@gmail.com>: prctl: allow to setup brk for et_dyn executables Subsystem: kconfig Zenghui Yu <yuzenghui@huawei.com>: configs: remove the obsolete CONFIG_INPUT_POLLDEV Lukas Bulwahn <lukas.bulwahn@gmail.com>: Kconfig.debug: drop selecting non-existing HARDLOCKUP_DETECTOR_ARCH Subsystem: selftests Greg Thelen <gthelen@google.com>: selftests/memfd: remove unused variable Subsystem: ipc Rafael Aquini <aquini@redhat.com>: ipc: replace costly bailout check in sysvipc_find_ipc() Subsystem: mm/vmscan Randy Dunlap <rdunlap@infradead.org>: mm/workingset: correct kernel-doc notations Subsystem: scripts Randy Dunlap <rdunlap@infradead.org>: scripts: check_extable: fix typo in user error message a/Documentation/admin-guide/mm/damon/index.rst | 15 a/Documentation/admin-guide/mm/damon/start.rst | 114 + a/Documentation/admin-guide/mm/damon/usage.rst | 112 + a/Documentation/admin-guide/mm/index.rst | 1 a/Documentation/admin-guide/mm/memory-hotplug.rst | 842 ++++++----- a/Documentation/dev-tools/kfence.rst | 98 - a/Documentation/kbuild/llvm.rst | 5 a/Documentation/vm/damon/api.rst | 20 a/Documentation/vm/damon/design.rst | 166 ++ a/Documentation/vm/damon/faq.rst | 51 a/Documentation/vm/damon/index.rst | 30 a/Documentation/vm/index.rst | 1 a/MAINTAINERS | 17 a/arch/Kconfig | 2 a/arch/alpha/include/asm/agp.h | 4 a/arch/alpha/include/asm/bitops.h | 2 a/arch/alpha/kernel/pci-sysfs.c | 12 a/arch/arc/Kconfig | 1 a/arch/arc/include/asm/bitops.h | 1 a/arch/arc/kernel/traps.c | 5 a/arch/arm/configs/dove_defconfig | 1 a/arch/arm/configs/pxa_defconfig | 1 a/arch/arm/include/asm/bitops.h | 1 a/arch/arm/kernel/traps.c | 5 a/arch/arm64/Kconfig | 1 a/arch/arm64/include/asm/bitops.h | 1 a/arch/arm64/mm/mmu.c | 3 a/arch/csky/include/asm/bitops.h | 1 a/arch/h8300/include/asm/bitops.h | 1 a/arch/h8300/kernel/traps.c | 4 a/arch/hexagon/include/asm/bitops.h | 1 a/arch/hexagon/kernel/traps.c | 4 a/arch/ia64/include/asm/bitops.h | 2 a/arch/ia64/mm/init.c | 3 a/arch/m68k/include/asm/bitops.h | 2 a/arch/mips/Kconfig | 1 a/arch/mips/configs/lemote2f_defconfig | 1 a/arch/mips/configs/pic32mzda_defconfig | 1 a/arch/mips/configs/rt305x_defconfig | 1 a/arch/mips/configs/xway_defconfig | 1 a/arch/mips/include/asm/bitops.h | 1 a/arch/nds32/kernel/traps.c | 5 a/arch/nios2/kernel/traps.c | 5 a/arch/openrisc/include/asm/bitops.h | 1 a/arch/openrisc/kernel/traps.c | 5 a/arch/parisc/configs/generic-32bit_defconfig | 1 a/arch/parisc/include/asm/bitops.h | 2 a/arch/parisc/kernel/traps.c | 4 a/arch/powerpc/include/asm/bitops.h | 2 a/arch/powerpc/include/asm/cputhreads.h | 2 a/arch/powerpc/kernel/traps.c | 5 a/arch/powerpc/mm/mem.c | 3 a/arch/powerpc/platforms/pasemi/dma_lib.c | 4 a/arch/powerpc/platforms/pseries/hotplug-memory.c | 9 a/arch/riscv/Kconfig | 2 a/arch/riscv/include/asm/bitops.h | 1 a/arch/riscv/kernel/traps.c | 5 a/arch/s390/Kconfig | 1 a/arch/s390/include/asm/bitops.h | 1 a/arch/s390/kvm/kvm-s390.c | 2 a/arch/s390/mm/init.c | 3 a/arch/sh/include/asm/bitops.h | 1 a/arch/sh/mm/init.c | 3 a/arch/sparc/include/asm/bitops_32.h | 1 a/arch/sparc/include/asm/bitops_64.h | 2 a/arch/um/kernel/trap.c | 4 a/arch/x86/Kconfig | 1 a/arch/x86/configs/i386_defconfig | 1 a/arch/x86/configs/x86_64_defconfig | 1 a/arch/x86/include/asm/bitops.h | 2 a/arch/x86/kernel/apic/vector.c | 4 a/arch/x86/mm/init_32.c | 3 a/arch/x86/mm/init_64.c | 3 a/arch/x86/um/Kconfig | 1 a/arch/xtensa/include/asm/bitops.h | 1 a/block/blk-mq.c | 2 a/drivers/acpi/acpi_memhotplug.c | 46 a/drivers/base/memory.c | 231 ++- a/drivers/base/node.c | 2 a/drivers/block/rnbd/rnbd-clt.c | 2 a/drivers/dax/kmem.c | 43 a/drivers/devfreq/devfreq.c | 2 a/drivers/dma/ti/edma.c | 2 a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 4 a/drivers/hwmon/ltc2992.c | 3 a/drivers/hwmon/mr75203.c | 2 a/drivers/iio/adc/ad7124.c | 2 a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 3 a/drivers/iio/light/as73211.c | 3 a/drivers/infiniband/hw/irdma/hw.c | 16 a/drivers/media/cec/core/cec-core.c | 2 a/drivers/media/i2c/ov02a10.c | 2 a/drivers/media/mc/mc-devnode.c | 2 a/drivers/mmc/host/renesas_sdhi_core.c | 2 a/drivers/mtd/nand/raw/intel-nand-controller.c | 2 a/drivers/net/virtio_net.c | 2 a/drivers/pci/controller/dwc/pci-dra7xx.c | 2 a/drivers/phy/st/phy-stm32-usbphyc.c | 2 a/drivers/scsi/lpfc/lpfc_sli.c | 10 a/drivers/soc/fsl/qbman/bman_portal.c | 2 a/drivers/soc/fsl/qbman/qman_portal.c | 2 a/drivers/soc/ti/k3-ringacc.c | 4 a/drivers/thermal/devfreq_cooling.c | 2 a/drivers/tty/n_tty.c | 2 a/drivers/virt/acrn/ioreq.c | 3 a/drivers/virtio/virtio_mem.c | 26 a/fs/coredump.c | 15 a/fs/eventpoll.c | 18 a/fs/f2fs/segment.c | 8 a/fs/nilfs2/sysfs.c | 26 a/fs/nilfs2/the_nilfs.c | 9 a/fs/ocfs2/cluster/heartbeat.c | 2 a/fs/ocfs2/dlm/dlmdomain.c | 4 a/fs/ocfs2/dlm/dlmmaster.c | 18 a/fs/ocfs2/dlm/dlmrecovery.c | 2 a/fs/ocfs2/dlm/dlmthread.c | 2 a/fs/proc/array.c | 18 a/fs/proc/base.c | 5 a/fs/proc/kcore.c | 73 a/include/asm-generic/bitops.h | 1 a/include/asm-generic/bitops/find.h | 198 -- a/include/asm-generic/bitops/le.h | 64 a/include/asm-generic/early_ioremap.h | 6 a/include/linux/bitmap.h | 34 a/include/linux/bitops.h | 34 a/include/linux/cpumask.h | 46 a/include/linux/damon.h | 290 +++ a/include/linux/find.h | 134 + a/include/linux/highmem-internal.h | 27 a/include/linux/memory.h | 55 a/include/linux/memory_hotplug.h | 40 a/include/linux/mmzone.h | 19 a/include/linux/once.h | 2 a/include/linux/page-flags.h | 17 a/include/linux/page_ext.h | 2 a/include/linux/page_idle.h | 6 a/include/linux/pagemap.h | 7 a/include/linux/sched/user.h | 3 a/include/linux/slub_def.h | 6 a/include/linux/threads.h | 2 a/include/linux/units.h | 10 a/include/linux/vmalloc.h | 3 a/include/trace/events/damon.h | 43 a/include/trace/events/mmflags.h | 2 a/include/trace/events/page_ref.h | 4 a/init/initramfs.c | 2 a/init/main.c | 3 a/init/noinitramfs.c | 2 a/ipc/util.c | 16 a/kernel/acct.c | 2 a/kernel/fork.c | 2 a/kernel/profile.c | 21 a/kernel/sys.c | 7 a/kernel/time/clocksource.c | 4 a/kernel/user.c | 25 a/lib/Kconfig | 3 a/lib/Kconfig.debug | 9 a/lib/dump_stack.c | 3 a/lib/find_bit.c | 21 a/lib/find_bit_benchmark.c | 21 a/lib/genalloc.c | 2 a/lib/iov_iter.c | 8 a/lib/math/Kconfig | 2 a/lib/math/rational.c | 3 a/lib/string.c | 130 + a/lib/test_bitmap.c | 37 a/lib/test_printf.c | 2 a/lib/test_sort.c | 40 a/lib/vsprintf.c | 26 a/mm/Kconfig | 15 a/mm/Makefile | 4 a/mm/compaction.c | 20 a/mm/damon/Kconfig | 68 a/mm/damon/Makefile | 5 a/mm/damon/core-test.h | 253 +++ a/mm/damon/core.c | 748 ++++++++++ a/mm/damon/dbgfs-test.h | 126 + a/mm/damon/dbgfs.c | 631 ++++++++ a/mm/damon/vaddr-test.h | 329 ++++ a/mm/damon/vaddr.c | 672 +++++++++ a/mm/early_ioremap.c | 5 a/mm/highmem.c | 2 a/mm/ioremap.c | 25 a/mm/kfence/core.c | 3 a/mm/kfence/kfence.h | 2 a/mm/kfence/kfence_test.c | 3 a/mm/kfence/report.c | 19 a/mm/kmemleak.c | 2 a/mm/memory_hotplug.c | 396 ++++- a/mm/memremap.c | 5 a/mm/page_alloc.c | 27 a/mm/page_ext.c | 12 a/mm/page_idle.c | 10 a/mm/page_isolation.c | 7 a/mm/page_owner.c | 14 a/mm/percpu.c | 36 a/mm/rmap.c | 6 a/mm/secretmem.c | 9 a/mm/slab_common.c | 2 a/mm/slub.c | 1023 +++++++++----- a/mm/vmalloc.c | 24 a/mm/workingset.c | 2 a/net/ncsi/ncsi-manage.c | 4 a/scripts/check_extable.sh | 2 a/scripts/checkpatch.pl | 93 - a/tools/include/linux/bitmap.h | 4 a/tools/perf/bench/find-bit-bench.c | 2 a/tools/perf/builtin-c2c.c | 6 a/tools/perf/builtin-record.c | 2 a/tools/perf/tests/bitmap.c | 2 a/tools/perf/tests/mem2node.c | 2 a/tools/perf/util/affinity.c | 4 a/tools/perf/util/header.c | 4 a/tools/perf/util/metricgroup.c | 2 a/tools/perf/util/mmap.c | 4 a/tools/testing/selftests/damon/Makefile | 7 a/tools/testing/selftests/damon/_chk_dependency.sh | 28 a/tools/testing/selftests/damon/debugfs_attrs.sh | 75 + a/tools/testing/selftests/kvm/dirty_log_perf_test.c | 2 a/tools/testing/selftests/kvm/dirty_log_test.c | 4 a/tools/testing/selftests/kvm/x86_64/vmx_dirty_log_test.c | 2 a/tools/testing/selftests/memfd/memfd_test.c | 2 b/MAINTAINERS | 2 b/tools/include/asm-generic/bitops.h | 1 b/tools/include/linux/bitmap.h | 7 b/tools/include/linux/find.h | 81 + b/tools/lib/find_bit.c | 20 227 files changed, 6695 insertions(+), 1875 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-09-08 2:52 incoming Andrew Morton @ 2021-09-08 8:57 ` Vlastimil Babka 0 siblings, 0 replies; 530+ messages in thread From: Vlastimil Babka @ 2021-09-08 8:57 UTC (permalink / raw) To: Andrew Morton, Linus Torvalds Cc: linux-mm, mm-commits, Mike Galbraith, Mel Gorman On 9/8/21 04:52, Andrew Morton wrote: > Subsystem: mm/slub > > Vlastimil Babka <vbabka@suse.cz>: > Patch series "SLUB: reduce irq disabled scope and make it RT compatible", v6: > mm, slub: don't call flush_all() from slab_debug_trace_open() > mm, slub: allocate private object map for debugfs listings > mm, slub: allocate private object map for validate_slab_cache() > mm, slub: don't disable irq for debug_check_no_locks_freed() > mm, slub: remove redundant unfreeze_partials() from put_cpu_partial() > mm, slub: extract get_partial() from new_slab_objects() > mm, slub: dissolve new_slab_objects() into ___slab_alloc() > mm, slub: return slab page from get_partial() and set c->page afterwards > mm, slub: restructure new page checks in ___slab_alloc() > mm, slub: simplify kmem_cache_cpu and tid setup > mm, slub: move disabling/enabling irqs to ___slab_alloc() > mm, slub: do initial checks in ___slab_alloc() with irqs enabled > mm, slub: move disabling irqs closer to get_partial() in ___slab_alloc() > mm, slub: restore irqs around calling new_slab() > mm, slub: validate slab from partial list or page allocator before making it cpu slab > mm, slub: check new pages with restored irqs > mm, slub: stop disabling irqs around get_partial() > mm, slub: move reset of c->page and freelist out of deactivate_slab() > mm, slub: make locking in deactivate_slab() irq-safe > mm, slub: call deactivate_slab() without disabling irqs > mm, slub: move irq control into unfreeze_partials() > mm, slub: discard slabs in unfreeze_partials() without irqs disabled > mm, slub: detach whole partial list at once in unfreeze_partials() > mm, slub: separate detaching of partial list in unfreeze_partials() from unfreezing > mm, slub: only disable irq with spin_lock in __unfreeze_partials() > mm, slub: don't disable irqs in slub_cpu_dead() > mm, slab: split out the cpu offline variant of flush_slab() > > Sebastian Andrzej Siewior <bigeasy@linutronix.de>: > mm: slub: move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context > mm: slub: make object_map_lock a raw_spinlock_t > > Vlastimil Babka <vbabka@suse.cz>: > mm, slub: make slab_lock() disable irqs with PREEMPT_RT > mm, slub: protect put_cpu_partial() with disabled irqs instead of cmpxchg > mm, slub: use migrate_disable() on PREEMPT_RT > mm, slub: convert kmem_cpu_slab protection to local_lock For my own piece of mind, I've checked that this part (patches 1 to 33) are identical to the v6 posting [1] and git version [2] that Mel and Mike tested (replies to [1]). [1] https://lore.kernel.org/all/20210904105003.11688-1-vbabka@suse.cz/ [2] git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git tags/mm-slub-5.15-rc1 ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-09-02 21:48 Andrew Morton 2021-09-02 21:49 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-09-02 21:48 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 212 patches, based on 4a3bb4200a5958d76cc26ebe4db4257efa56812b. Subsystems affected by this patch series: ia64 ocfs2 block mm/slub mm/debug mm/pagecache mm/gup mm/swap mm/shmem mm/memcg mm/selftests mm/pagemap mm/mremap mm/bootmem mm/sparsemem mm/vmalloc mm/kasan mm/pagealloc mm/memory-failure mm/hugetlb mm/userfaultfd mm/vmscan mm/compaction mm/mempolicy mm/memblock mm/oom-kill mm/migration mm/ksm mm/percpu mm/vmstat mm/madvise Subsystem: ia64 Jason Wang <wangborong@cdjrlc.com>: ia64: fix typo in a comment Geert Uytterhoeven <geert+renesas@glider.be>: Patch series "ia64: Miscellaneous fixes and cleanups": ia64: fix #endif comment for reserve_elfcorehdr() ia64: make reserve_elfcorehdr() static ia64: make num_rsvd_regions static Subsystem: ocfs2 Dan Carpenter <dan.carpenter@oracle.com>: ocfs2: remove an unnecessary condition Tuo Li <islituo@gmail.com>: ocfs2: quota_local: fix possible uninitialized-variable access in ocfs2_local_read_info() Gang He <ghe@suse.com>: ocfs2: ocfs2_downconvert_lock failure results in deadlock Subsystem: block kernel test robot <lkp@intel.com>: arch/csky/kernel/probes/kprobes.c: fix bugon.cocci warnings Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: Patch series "SLUB: reduce irq disabled scope and make it RT compatible", v4: mm, slub: don't call flush_all() from slab_debug_trace_open() mm, slub: allocate private object map for debugfs listings mm, slub: allocate private object map for validate_slab_cache() mm, slub: don't disable irq for debug_check_no_locks_freed() mm, slub: remove redundant unfreeze_partials() from put_cpu_partial() mm, slub: unify cmpxchg_double_slab() and __cmpxchg_double_slab() mm, slub: extract get_partial() from new_slab_objects() mm, slub: dissolve new_slab_objects() into ___slab_alloc() mm, slub: return slab page from get_partial() and set c->page afterwards mm, slub: restructure new page checks in ___slab_alloc() mm, slub: simplify kmem_cache_cpu and tid setup mm, slub: move disabling/enabling irqs to ___slab_alloc() mm, slub: do initial checks in ___slab_alloc() with irqs enabled mm, slub: move disabling irqs closer to get_partial() in ___slab_alloc() mm, slub: restore irqs around calling new_slab() mm, slub: validate slab from partial list or page allocator before making it cpu slab mm, slub: check new pages with restored irqs mm, slub: stop disabling irqs around get_partial() mm, slub: move reset of c->page and freelist out of deactivate_slab() mm, slub: make locking in deactivate_slab() irq-safe mm, slub: call deactivate_slab() without disabling irqs mm, slub: move irq control into unfreeze_partials() mm, slub: discard slabs in unfreeze_partials() without irqs disabled mm, slub: detach whole partial list at once in unfreeze_partials() mm, slub: separate detaching of partial list in unfreeze_partials() from unfreezing mm, slub: only disable irq with spin_lock in __unfreeze_partials() mm, slub: don't disable irqs in slub_cpu_dead() mm, slab: make flush_slab() possible to call with irqs enabled Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm: slub: move flush_cpu_slab() invocations __free_slab() invocations out of IRQ context mm: slub: make object_map_lock a raw_spinlock_t Vlastimil Babka <vbabka@suse.cz>: mm, slub: optionally save/restore irqs in slab_[un]lock()/ mm, slub: make slab_lock() disable irqs with PREEMPT_RT mm, slub: protect put_cpu_partial() with disabled irqs instead of cmpxchg mm, slub: use migrate_disable() on PREEMPT_RT mm, slub: convert kmem_cpu_slab protection to local_lock Subsystem: mm/debug Gavin Shan <gshan@redhat.com>: Patch series "mm/debug_vm_pgtable: Enhancements", v6: mm/debug_vm_pgtable: introduce struct pgtable_debug_args mm/debug_vm_pgtable: use struct pgtable_debug_args in basic tests mm/debug_vm_pgtable: use struct pgtable_debug_args in leaf and savewrite tests mm/debug_vm_pgtable: use struct pgtable_debug_args in protnone and devmap tests mm/debug_vm_pgtable: use struct pgtable_debug_args in soft_dirty and swap tests mm/debug_vm_pgtable: use struct pgtable_debug_args in migration and thp tests mm/debug_vm_pgtable: use struct pgtable_debug_args in PTE modifying tests mm/debug_vm_pgtable: use struct pgtable_debug_args in PMD modifying tests mm/debug_vm_pgtable: use struct pgtable_debug_args in PUD modifying tests mm/debug_vm_pgtable: use struct pgtable_debug_args in PGD and P4D modifying tests mm/debug_vm_pgtable: remove unused code mm/debug_vm_pgtable: fix corrupted page flag "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: report a more useful address for reclaim acquisition liuhailong <liuhailong@oppo.com>: mm: add kernel_misc_reclaimable in show_free_areas Subsystem: mm/pagecache Jan Kara <jack@suse.cz>: Patch series "writeback: Fix bandwidth estimates", v4: writeback: track number of inodes under writeback writeback: reliably update bandwidth estimation writeback: fix bandwidth estimate for spiky workload writeback: rename domain_update_bandwidth() writeback: use READ_ONCE for unlocked reads of writeback stats Johannes Weiner <hannes@cmpxchg.org>: mm: remove irqsave/restore locking from contexts with irqs enabled fs: drop_caches: fix skipping over shadow cache inodes fs: inode: count invalidated shadow pages in pginodesteal Shakeel Butt <shakeelb@google.com>: writeback: memcg: simplify cgroup_writeback_by_id Jing Yangyang <jing.yangyang@zte.com.cn>: include/linux/buffer_head.h: fix boolreturn.cocci warnings Subsystem: mm/gup Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups and fixup for gup": mm: gup: remove set but unused local variable major mm: gup: remove unneed local variable orig_refs mm: gup: remove useless BUG_ON in __get_user_pages() mm: gup: fix potential pgmap refcnt leak in __gup_device_huge() mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range() John Hubbard <jhubbard@nvidia.com>: Patch series "A few gup refactorings and documentation updates", v3: mm/gup: documentation corrections for gup/pup mm/gup: small refactoring: simplify try_grab_page() mm/gup: remove try_get_page(), call try_get_compound_head() directly Subsystem: mm/swap Hugh Dickins <hughd@google.com>: fs, mm: fix race in unlinking swapfile John Hubbard <jhubbard@nvidia.com>: mm: delete unused get_kernel_page() Subsystem: mm/shmem Sebastian Andrzej Siewior <bigeasy@linutronix.de>: shmem: use raw_spinlock_t for ->stat_lock Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups for shmem": shmem: remove unneeded variable ret shmem: remove unneeded header file shmem: remove unneeded function forward declaration shmem: include header file to declare swap_info Hugh Dickins <hughd@google.com>: Patch series "huge tmpfs: shmem_is_huge() fixes and cleanups": huge tmpfs: fix fallocate(vanilla) advance over huge pages huge tmpfs: fix split_huge_page() after FALLOC_FL_KEEP_SIZE huge tmpfs: remove shrinklist addition from shmem_setattr() huge tmpfs: revert shmem's use of transhuge_vma_enabled() huge tmpfs: move shmem_huge_enabled() upwards huge tmpfs: SGP_NOALLOC to stop collapse_file() on race huge tmpfs: shmem_is_huge(vma, inode, index) huge tmpfs: decide stat.st_blksize by shmem_is_huge() shmem: shmem_writepage() split unlikely i915 THP Subsystem: mm/memcg Suren Baghdasaryan <surenb@google.com>: mm, memcg: add mem_cgroup_disabled checks in vmpressure and swap-related functions mm, memcg: inline mem_cgroup_{charge/uncharge} to improve disabled memcg config mm, memcg: inline swap-related functions to improve disabled memcg config Vasily Averin <vvs@virtuozzo.com>: memcg: enable accounting for pids in nested pid namespaces Shakeel Butt <shakeelb@google.com>: memcg: switch lruvec stats to rstat memcg: infrastructure to flush memcg stats Yutian Yang <nglaive@gmail.com>: memcg: charge fs_context and legacy_fs_context Vasily Averin <vvs@virtuozzo.com>: Patch series "memcg accounting from OpenVZ", v7: memcg: enable accounting for mnt_cache entries memcg: enable accounting for pollfd and select bits arrays memcg: enable accounting for file lock caches memcg: enable accounting for fasync_cache memcg: enable accounting for new namesapces and struct nsproxy memcg: enable accounting of ipc resources memcg: enable accounting for signals memcg: enable accounting for posix_timers_cache slab memcg: enable accounting for ldt_struct objects Shakeel Butt <shakeelb@google.com>: memcg: cleanup racy sum avoidance code Vasily Averin <vvs@virtuozzo.com>: memcg: replace in_interrupt() by !in_task() in active_memcg() Baolin Wang <baolin.wang@linux.alibaba.com>: mm: memcontrol: set the correct memcg swappiness restriction Miaohe Lin <linmiaohe@huawei.com>: mm, memcg: remove unused functions mm, memcg: save some atomic ops when flush is already true Michal Hocko <mhocko@suse.com>: memcg: fix up drain_local_stock comment Shakeel Butt <shakeelb@google.com>: memcg: make memcg->event_list_lock irqsafe Subsystem: mm/selftests Po-Hsu Lin <po-hsu.lin@canonical.com>: selftests/vm: use kselftest skip code for skipped tests Colin Ian King <colin.king@canonical.com>: selftests: Fix spelling mistake "cann't" -> "cannot" Subsystem: mm/pagemap Nicholas Piggin <npiggin@gmail.com>: Patch series "shoot lazy tlbs", v4: lazy tlb: introduce lazy mm refcount helper functions lazy tlb: allow lazy tlb mm refcounting to be configurable lazy tlb: shoot lazies, a non-refcounting lazy tlb option powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN Christoph Hellwig <hch@lst.de>: Patch series "_kernel_dcache_page fixes and removal": mmc: JZ4740: remove the flush_kernel_dcache_page call in jz4740_mmc_read_data mmc: mmc_spi: replace flush_kernel_dcache_page with flush_dcache_page scatterlist: replace flush_kernel_dcache_page with flush_dcache_page mm: remove flush_kernel_dcache_page Huang Ying <ying.huang@intel.com>: mm,do_huge_pmd_numa_page: remove unnecessary TLB flushing code Greg Kroah-Hartman <gregkh@linuxfoundation.org>: mm: change fault_in_pages_* to have an unsigned size parameter Luigi Rizzo <lrizzo@google.com>: mm/pagemap: add mmap_assert_locked() annotations to find_vma*() "Liam R. Howlett" <Liam.Howlett@Oracle.com>: remap_file_pages: Use vma_lookup() instead of find_vma() Subsystem: mm/mremap Chen Wandun <chenwandun@huawei.com>: mm/mremap: fix memory account on do_munmap() failure Subsystem: mm/bootmem Muchun Song <songmuchun@bytedance.com>: mm/bootmem_info.c: mark __init on register_page_bootmem_info_section Subsystem: mm/sparsemem Ohhoon Kwon <ohoono.kwon@samsung.com>: Patch series "mm: sparse: remove __section_nr() function", v4: mm: sparse: pass section_nr to section_mark_present mm: sparse: pass section_nr to find_memory_block mm: sparse: remove __section_nr() function Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/sparse: set SECTION_NID_SHIFT to 6 Matthew Wilcox <willy@infradead.org>: include/linux/mmzone.h: avoid a warning in sparse memory support Miles Chen <miles.chen@mediatek.com>: mm/sparse: clarify pgdat_to_phys Subsystem: mm/vmalloc "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: use batched page requests in bulk-allocator mm/vmalloc: remove gfpflags_allow_blocking() check lib/test_vmalloc.c: add a new 'nr_pages' parameter Chen Wandun <chenwandun@huawei.com>: mm/vmalloc: fix wrong behavior in vread Subsystem: mm/kasan Woody Lin <woodylin@google.com>: mm/kasan: move kasan.fault to mm/kasan/report.c Andrey Konovalov <andreyknvl@gmail.com>: Patch series "kasan: test: avoid crashing the kernel with HW_TAGS", v2: kasan: test: rework kmalloc_oob_right kasan: test: avoid writing invalid memory kasan: test: avoid corrupting memory via memset kasan: test: disable kmalloc_memmove_invalid_size for HW_TAGS kasan: test: only do kmalloc_uaf_memset for generic mode kasan: test: clean up ksize_uaf kasan: test: avoid corrupting memory in copy_user_test kasan: test: avoid corrupting memory in kasan_rcu_uaf Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: ensure consistency of memory map poisoning": mm/page_alloc: always initialize memory map for the holes microblaze: simplify pte_alloc_one_kernel() mm: introduce memmap_alloc() to unify memory map allocation memblock: stop poisoning raw allocations Nico Pache <npache@redhat.com>: mm/page_alloc.c: fix 'zone_id' may be used uninitialized in this function warning Mike Rapoport <rppt@linux.ibm.com>: mm/page_alloc: make alloc_node_mem_map() __init rather than __ref Vasily Averin <vvs@virtuozzo.com>: mm/page_alloc.c: use in_task() "George G. Davis" <davis.george@siemens.com>: mm/page_isolation: tracing: trace all test_pages_isolated failures Subsystem: mm/memory-failure Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups and fixup for hwpoison": mm/hwpoison: remove unneeded variable unmap_success mm/hwpoison: fix potential pte_unmap_unlock pte error mm/hwpoison: change argument struct page **hpagep to *hpage mm/hwpoison: fix some obsolete comments Yang Shi <shy828301@gmail.com>: mm: hwpoison: don't drop slab caches for offlining non-LRU page doc: hwpoison: correct the support for hugepage mm: hwpoison: dump page for unhandlable page Michael Wang <yun.wang@linux.alibaba.com>: mm: fix panic caused by __page_handle_poison() Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: simplify prep_compound_gigantic_page ref count racing code hugetlb: drop ref count earlier after page allocation hugetlb: before freeing hugetlb page set dtor to appropriate value hugetlb: fix hugetlb cgroup refcounting during vma split Subsystem: mm/userfaultfd Nadav Amit <namit@vmware.com>: Patch series "userfaultfd: minor bug fixes": userfaultfd: change mmap_changing to atomic userfaultfd: prevent concurrent API initialization selftests/vm/userfaultfd: wake after copy failure Subsystem: mm/vmscan Dave Hansen <dave.hansen@linux.intel.com>: Patch series "Migrate Pages in lieu of discard", v11: mm/numa: automatically generate node migration order mm/migrate: update node demotion order on hotplug events Yang Shi <yang.shi@linux.alibaba.com>: mm/migrate: enable returning precise migrate_pages() success count Dave Hansen <dave.hansen@linux.intel.com>: mm/migrate: demote pages during reclaim Yang Shi <yang.shi@linux.alibaba.com>: mm/vmscan: add page demotion counter Dave Hansen <dave.hansen@linux.intel.com>: mm/vmscan: add helper for querying ability to age anonymous pages Keith Busch <kbusch@kernel.org>: mm/vmscan: Consider anonymous pages without swap Dave Hansen <dave.hansen@linux.intel.com>: mm/vmscan: never demote for memcg reclaim Huang Ying <ying.huang@intel.com>: mm/migrate: add sysfs interface to enable reclaim migration Hui Su <suhui@zeku.com>: mm/vmpressure: replace vmpressure_to_css() with vmpressure_to_memcg() Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups for vmscan", v2: mm/vmscan: remove the PageDirty check after MADV_FREE pages are page_ref_freezed mm/vmscan: remove misleading setting to sc->priority mm/vmscan: remove unneeded return value of kswapd_run() mm/vmscan: add 'else' to remove check_pending label Vlastimil Babka <vbabka@suse.cz>: mm, vmscan: guarantee drop_slab_node() termination Subsystem: mm/compaction Charan Teja Reddy <charante@codeaurora.org>: mm: compaction: optimize proactive compaction deferrals mm: compaction: support triggering of proactive compaction by user Subsystem: mm/mempolicy Baolin Wang <baolin.wang@linux.alibaba.com>: mm/mempolicy: use readable NUMA_NO_NODE macro instead of magic number Dave Hansen <dave.hansen@linux.intel.com>: Patch series "Introduce multi-preference mempolicy", v7: mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes Feng Tang <feng.tang@intel.com>: mm/memplicy: add page allocation function for MPOL_PREFERRED_MANY policy Ben Widawsky <ben.widawsky@intel.com>: mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY mm/mempolicy: advertise new MPOL_PREFERRED_MANY Feng Tang <feng.tang@intel.com>: mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies Vasily Averin <vvs@virtuozzo.com>: mm/mempolicy.c: use in_task() in mempolicy_slab_node() Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: memblock: make memblock_find_in_range method private Subsystem: mm/oom-kill Suren Baghdasaryan <surenb@google.com>: mm: introduce process_mrelease system call mm: wire up syscall process_mrelease Subsystem: mm/migration Randy Dunlap <rdunlap@infradead.org>: mm/migrate: correct kernel-doc notation Subsystem: mm/ksm Zhansaya Bagdauletkyzy <zhansayabagdaulet@gmail.com>: Patch series "add KSM selftests": selftests: vm: add KSM merge test selftests: vm: add KSM unmerge test selftests: vm: add KSM zero page merging test selftests: vm: add KSM merging across nodes test mm: KSM: fix data type Patch series "add KSM performance tests", v3: selftests: vm: add KSM merging time test selftests: vm: add COW time test for KSM pages Subsystem: mm/percpu Jing Xiangfeng <jingxiangfeng@huawei.com>: mm/percpu,c: remove obsolete comments of pcpu_chunk_populated() Subsystem: mm/vmstat Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup for vmstat": mm/vmstat: correct some wrong comments mm/vmstat: simplify the array size calculation mm/vmstat: remove unneeded return value Subsystem: mm/madvise zhangkui <zhangkui@oppo.com>: mm/madvise: add MADV_WILLNEED to process_madvise() Documentation/ABI/testing/sysfs-kernel-mm-numa | 24 Documentation/admin-guide/mm/numa_memory_policy.rst | 15 Documentation/admin-guide/sysctl/vm.rst | 3 Documentation/core-api/cachetlb.rst | 86 - Documentation/dev-tools/kasan.rst | 13 Documentation/translations/zh_CN/core-api/cachetlb.rst | 9 Documentation/vm/hwpoison.rst | 1 arch/Kconfig | 28 arch/alpha/kernel/syscalls/syscall.tbl | 2 arch/arm/include/asm/cacheflush.h | 4 arch/arm/kernel/setup.c | 20 arch/arm/mach-rpc/ecard.c | 2 arch/arm/mm/flush.c | 33 arch/arm/mm/nommu.c | 6 arch/arm/tools/syscall.tbl | 2 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 2 arch/arm64/kvm/hyp/reserved_mem.c | 9 arch/arm64/mm/init.c | 38 arch/csky/abiv1/cacheflush.c | 11 arch/csky/abiv1/inc/abi/cacheflush.h | 4 arch/csky/kernel/probes/kprobes.c | 3 arch/ia64/include/asm/meminit.h | 2 arch/ia64/kernel/acpi.c | 2 arch/ia64/kernel/setup.c | 55 arch/ia64/kernel/syscalls/syscall.tbl | 2 arch/m68k/kernel/syscalls/syscall.tbl | 2 arch/microblaze/include/asm/page.h | 3 arch/microblaze/include/asm/pgtable.h | 2 arch/microblaze/kernel/syscalls/syscall.tbl | 2 arch/microblaze/mm/init.c | 12 arch/microblaze/mm/pgtable.c | 17 arch/mips/include/asm/cacheflush.h | 8 arch/mips/kernel/setup.c | 14 arch/mips/kernel/syscalls/syscall_n32.tbl | 2 arch/mips/kernel/syscalls/syscall_n64.tbl | 2 arch/mips/kernel/syscalls/syscall_o32.tbl | 2 arch/nds32/include/asm/cacheflush.h | 3 arch/nds32/mm/cacheflush.c | 9 arch/parisc/include/asm/cacheflush.h | 8 arch/parisc/kernel/cache.c | 3 arch/parisc/kernel/syscalls/syscall.tbl | 2 arch/powerpc/Kconfig | 1 arch/powerpc/kernel/smp.c | 2 arch/powerpc/kernel/syscalls/syscall.tbl | 2 arch/powerpc/mm/book3s64/radix_tlb.c | 4 arch/powerpc/platforms/pseries/hotplug-memory.c | 4 arch/riscv/mm/init.c | 44 arch/s390/kernel/setup.c | 9 arch/s390/kernel/syscalls/syscall.tbl | 2 arch/s390/mm/fault.c | 2 arch/sh/include/asm/cacheflush.h | 8 arch/sh/kernel/syscalls/syscall.tbl | 2 arch/sparc/kernel/syscalls/syscall.tbl | 2 arch/x86/entry/syscalls/syscall_32.tbl | 1 arch/x86/entry/syscalls/syscall_64.tbl | 1 arch/x86/kernel/aperture_64.c | 5 arch/x86/kernel/ldt.c | 6 arch/x86/mm/init.c | 23 arch/x86/mm/numa.c | 5 arch/x86/mm/numa_emulation.c | 5 arch/x86/realmode/init.c | 2 arch/xtensa/kernel/syscalls/syscall.tbl | 2 block/blk-map.c | 2 drivers/acpi/tables.c | 5 drivers/base/arch_numa.c | 5 drivers/base/memory.c | 4 drivers/mmc/host/jz4740_mmc.c | 4 drivers/mmc/host/mmc_spi.c | 2 drivers/of/of_reserved_mem.c | 12 fs/drop_caches.c | 3 fs/exec.c | 12 fs/fcntl.c | 3 fs/fs-writeback.c | 28 fs/fs_context.c | 4 fs/inode.c | 2 fs/locks.c | 6 fs/namei.c | 8 fs/namespace.c | 7 fs/ocfs2/dlmglue.c | 14 fs/ocfs2/quota_global.c | 1 fs/ocfs2/quota_local.c | 2 fs/pipe.c | 2 fs/select.c | 4 fs/userfaultfd.c | 116 - include/linux/backing-dev-defs.h | 2 include/linux/backing-dev.h | 19 include/linux/buffer_head.h | 2 include/linux/compaction.h | 2 include/linux/highmem.h | 5 include/linux/hugetlb_cgroup.h | 12 include/linux/memblock.h | 2 include/linux/memcontrol.h | 118 + include/linux/memory.h | 2 include/linux/mempolicy.h | 16 include/linux/migrate.h | 14 include/linux/mm.h | 17 include/linux/mmzone.h | 4 include/linux/page-flags.h | 9 include/linux/pagemap.h | 4 include/linux/sched/mm.h | 35 include/linux/shmem_fs.h | 25 include/linux/slub_def.h | 6 include/linux/swap.h | 28 include/linux/syscalls.h | 1 include/linux/userfaultfd_k.h | 8 include/linux/vm_event_item.h | 2 include/linux/vmpressure.h | 2 include/linux/writeback.h | 4 include/trace/events/migrate.h | 3 include/uapi/asm-generic/unistd.h | 4 include/uapi/linux/mempolicy.h | 1 ipc/msg.c | 2 ipc/namespace.c | 2 ipc/sem.c | 9 ipc/shm.c | 2 kernel/cgroup/namespace.c | 2 kernel/cpu.c | 2 kernel/exit.c | 2 kernel/fork.c | 51 kernel/kthread.c | 21 kernel/nsproxy.c | 2 kernel/pid_namespace.c | 5 kernel/sched/core.c | 37 kernel/sched/sched.h | 4 kernel/signal.c | 2 kernel/sys_ni.c | 1 kernel/sysctl.c | 2 kernel/time/namespace.c | 4 kernel/time/posix-timers.c | 4 kernel/user_namespace.c | 2 lib/scatterlist.c | 5 lib/test_kasan.c | 80 - lib/test_kasan_module.c | 20 lib/test_vmalloc.c | 5 mm/backing-dev.c | 11 mm/bootmem_info.c | 4 mm/compaction.c | 69 - mm/debug_vm_pgtable.c | 982 +++++++++------ mm/filemap.c | 15 mm/gup.c | 109 - mm/huge_memory.c | 32 mm/hugetlb.c | 173 ++ mm/hwpoison-inject.c | 2 mm/internal.h | 9 mm/kasan/hw_tags.c | 43 mm/kasan/kasan.h | 1 mm/kasan/report.c | 29 mm/khugepaged.c | 2 mm/ksm.c | 8 mm/madvise.c | 1 mm/memblock.c | 22 mm/memcontrol.c | 234 +-- mm/memory-failure.c | 53 mm/memory_hotplug.c | 2 mm/mempolicy.c | 207 ++- mm/migrate.c | 319 ++++ mm/mmap.c | 7 mm/mremap.c | 2 mm/oom_kill.c | 70 + mm/page-writeback.c | 133 +- mm/page_alloc.c | 62 mm/page_isolation.c | 13 mm/percpu.c | 3 mm/shmem.c | 309 ++-- mm/slab_common.c | 2 mm/slub.c | 1085 ++++++++++------- mm/sparse.c | 46 mm/swap.c | 22 mm/swapfile.c | 14 mm/truncate.c | 28 mm/userfaultfd.c | 15 mm/vmalloc.c | 79 - mm/vmpressure.c | 10 mm/vmscan.c | 220 ++- mm/vmstat.c | 25 security/tomoyo/domain.c | 13 tools/testing/scatterlist/linux/mm.h | 1 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 3 tools/testing/selftests/vm/charge_reserved_hugetlb.sh | 5 tools/testing/selftests/vm/hugetlb_reparenting_test.sh | 5 tools/testing/selftests/vm/ksm_tests.c | 696 ++++++++++ tools/testing/selftests/vm/mlock-random-test.c | 2 tools/testing/selftests/vm/run_vmtests.sh | 98 + tools/testing/selftests/vm/userfaultfd.c | 13 186 files changed, 4488 insertions(+), 2281 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-09-02 21:48 incoming Andrew Morton @ 2021-09-02 21:49 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-09-02 21:49 UTC (permalink / raw) To: Linus Torvalds, linux-mm, mm-commits On Thu, 2 Sep 2021 14:48:20 -0700 Andrew Morton <akpm@linux-foundation.org> wrote: > 212 patches, based on 4a3bb4200a5958d76cc26ebe4db4257efa56812b. Make that "based on 7d2a07b769330c34b4deabeed939325c77a7ec2f". ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-08-25 19:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-08-25 19:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 2 patches, based on 6e764bcd1cf72a2846c0e53d3975a09b242c04c9. Subsystems affected by this patch series: mm/memory-hotplug MAINTAINERS Subsystem: mm/memory-hotplug Miaohe Lin <linmiaohe@huawei.com>: mm/memory_hotplug: fix potential permanent lru cache disable Subsystem: MAINTAINERS Namjae Jeon <namjae.jeon@samsung.com>: MAINTAINERS: exfat: update my email address MAINTAINERS | 2 +- mm/memory_hotplug.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-08-20 2:03 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-08-20 2:03 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 10 patches, based on 614cb2751d3150850d459bee596c397f344a7936. Subsystems affected by this patch series: mm/shmem mm/pagealloc mm/tracing MAINTAINERS mm/memcg mm/memory-failure mm/vmscan mm/kfence mm/hugetlb Subsystem: mm/shmem Yang Shi <shy828301@gmail.com>: Revert "mm/shmem: fix shmem_swapin() race with swapoff" Revert "mm: swap: check if swap backing device is congested or not" Subsystem: mm/pagealloc Doug Berger <opendmb@gmail.com>: mm/page_alloc: don't corrupt pcppage_migratetype Subsystem: mm/tracing Mike Rapoport <rppt@linux.ibm.com>: mmflags.h: add missing __GFP_ZEROTAGS and __GFP_SKIP_KASAN_POISON names Subsystem: MAINTAINERS Nathan Chancellor <nathan@kernel.org>: MAINTAINERS: update ClangBuiltLinux IRC chat Subsystem: mm/memcg Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/hwpoison: retry with shake_page() for unhandlable pages Subsystem: mm/vmscan Johannes Weiner <hannes@cmpxchg.org>: mm: vmscan: fix missing psi annotation for node_reclaim() Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: fix is_kfence_address() for addresses below KFENCE_POOL_SIZE Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: don't pass page cache pages to restore_reserve_on_error MAINTAINERS | 2 +- include/linux/kfence.h | 7 ++++--- include/linux/memcontrol.h | 29 +++++++++++++++-------------- include/trace/events/mmflags.h | 4 +++- mm/hugetlb.c | 19 ++++++++++++++----- mm/memory-failure.c | 12 +++++++++--- mm/page_alloc.c | 25 ++++++++++++------------- mm/shmem.c | 14 +------------- mm/swap_state.c | 7 ------- mm/vmscan.c | 30 ++++++++++++++++++++++-------- 10 files changed, 81 insertions(+), 68 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-08-13 23:53 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-08-13 23:53 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 7 patches, based on f8e6dfc64f6135d1b6c5215c14cd30b9b60a0008. Subsystems affected by this patch series: mm/kasan mm/slub mm/madvise mm/memcg lib Subsystem: mm/kasan Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: Patch series "kasan, slub: reset tag when printing address", v3: kasan, kmemleak: reset tags when scanning block kasan, slub: reset tag when printing address Subsystem: mm/slub Shakeel Butt <shakeelb@google.com>: slub: fix kmalloc_pagealloc_invalid_free unit test Vlastimil Babka <vbabka@suse.cz>: mm: slub: fix slub_debug disabling for list of slabs Subsystem: mm/madvise David Hildenbrand <david@redhat.com>: mm/madvise: report SIGBUS as -EFAULT for MADV_POPULATE_(READ|WRITE) Subsystem: mm/memcg Waiman Long <longman@redhat.com>: mm/memcg: fix incorrect flushing of lruvec data in obj_stock Subsystem: lib Liang Wang <wangliang101@huawei.com>: lib: use PFN_PHYS() in devmem_is_allowed() lib/devmem_is_allowed.c | 2 +- mm/gup.c | 7 +++++-- mm/kmemleak.c | 6 +++--- mm/madvise.c | 4 +++- mm/memcontrol.c | 6 ++++-- mm/slub.c | 25 ++++++++++++++----------- 6 files changed, 30 insertions(+), 20 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-07-29 21:52 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-07-29 21:52 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 7 patches, based on 7e96bf476270aecea66740a083e51b38c1371cd2. Subsystems affected by this patch series: lib ocfs2 mm/memcg mm/migration mm/slub mm/memcg Subsystem: lib Matteo Croce <mcroce@microsoft.com>: lib/test_string.c: move string selftest in the Runtime Testing menu Subsystem: ocfs2 Junxiao Bi <junxiao.bi@oracle.com>: ocfs2: fix zero out valid data ocfs2: issue zeroout to EOF blocks Subsystem: mm/memcg Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: fix blocking rstat function called from atomic cgroup1 thresholding code Subsystem: mm/migration "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/migrate: fix NR_ISOLATED corruption on 64-bit Subsystem: mm/slub Shakeel Butt <shakeelb@google.com>: slub: fix unreclaimable slab stat for bulk free Subsystem: mm/memcg Wang Hai <wanghai38@huawei.com>: mm/memcg: fix NULL pointer dereference in memcg_slab_free_hook() fs/ocfs2/file.c | 103 ++++++++++++++++++++++++++++++++---------------------- lib/Kconfig | 3 - lib/Kconfig.debug | 3 + mm/memcontrol.c | 3 + mm/migrate.c | 2 - mm/slab.h | 2 - mm/slub.c | 22 ++++++----- 7 files changed, 81 insertions(+), 57 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-07-23 22:49 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-07-23 22:49 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 15 patches, based on 704f4cba43d4ed31ef4beb422313f1263d87bc55. Subsystems affected by this patch series: mm/userfaultfd mm/kfence mm/highmem mm/pagealloc mm/memblock mm/pagecache mm/secretmem mm/pagemap mm/hugetlbfs Subsystem: mm/userfaultfd Peter Collingbourne <pcc@google.com>: Patch series "userfaultfd: do not untag user pointers", v5: userfaultfd: do not untag user pointers selftest: use mmap instead of posix_memalign to allocate memory Subsystem: mm/kfence Weizhao Ouyang <o451686892@gmail.com>: kfence: defer kfence_test_init to ensure that kunit debugfs is created Alexander Potapenko <glider@google.com>: kfence: move the size check to the beginning of __kfence_alloc() kfence: skip all GFP_ZONEMASK allocations Subsystem: mm/highmem Christoph Hellwig <hch@lst.de>: mm: call flush_dcache_page() in memcpy_to_page() and memzero_page() mm: use kmap_local_page in memzero_page Subsystem: mm/pagealloc Sergei Trofimovich <slyfox@gentoo.org>: mm: page_alloc: fix page_poison=1 / INIT_ON_ALLOC_DEFAULT_ON interaction Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: memblock: make for_each_mem_range() traverse MEMBLOCK_HOTPLUG regions Subsystem: mm/pagecache Roman Gushchin <guro@fb.com>: writeback, cgroup: remove wb from offline list before releasing refcnt writeback, cgroup: do not reparent dax inodes Subsystem: mm/secretmem Mike Rapoport <rppt@linux.ibm.com>: mm/secretmem: wire up ->set_page_dirty Subsystem: mm/pagemap Muchun Song <songmuchun@bytedance.com>: mm: mmap_lock: fix disabling preemption directly Qi Zheng <zhengqi.arch@bytedance.com>: mm: fix the deadlock in finish_fault() Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: hugetlbfs: fix mount mode command line processing Documentation/arm64/tagged-address-abi.rst | 26 ++++++++++++++++++-------- fs/fs-writeback.c | 3 +++ fs/hugetlbfs/inode.c | 2 +- fs/userfaultfd.c | 26 ++++++++++++-------------- include/linux/highmem.h | 6 ++++-- include/linux/memblock.h | 4 ++-- mm/backing-dev.c | 2 +- mm/kfence/core.c | 19 ++++++++++++++++--- mm/kfence/kfence_test.c | 2 +- mm/memblock.c | 3 ++- mm/memory.c | 11 ++++++++++- mm/mmap_lock.c | 4 ++-- mm/page_alloc.c | 29 ++++++++++++++++------------- mm/secretmem.c | 1 + tools/testing/selftests/vm/userfaultfd.c | 6 ++++-- 15 files changed, 93 insertions(+), 51 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-07-15 4:26 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-07-15 4:26 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 13 patches, based on 40226a3d96ef8ab8980f032681c8bfd46d63874e. Subsystems affected by this patch series: mm/kasan mm/pagealloc mm/rmap mm/hmm hfs mm/hugetlb Subsystem: mm/kasan Marco Elver <elver@google.com>: mm: move helper to check slub_debug_enabled Yee Lee <yee.lee@mediatek.com>: kasan: add memzero init for unaligned size at DEBUG Marco Elver <elver@google.com>: kasan: fix build by including kernel.h Subsystem: mm/pagealloc Matteo Croce <mcroce@microsoft.com>: Revert "mm/page_alloc: make should_fail_alloc_page() static" Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: avoid page allocator recursion with pagesets.lock held Yanfei Xu <yanfei.xu@windriver.com>: mm/page_alloc: correct return value when failing at preparing Chuck Lever <chuck.lever@oracle.com>: mm/page_alloc: further fix __alloc_pages_bulk() return value Subsystem: mm/rmap Christoph Hellwig <hch@lst.de>: mm: fix the try_to_unmap prototype for !CONFIG_MMU Subsystem: mm/hmm Alistair Popple <apopple@nvidia.com>: lib/test_hmm: remove set but unused page variable Subsystem: hfs Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>: Patch series "hfs: fix various errors", v2: hfs: add missing clean-up in hfs_fill_super hfs: fix high memory mapping in hfs_bnode_read hfs: add lock nesting notation to hfs_find_init Subsystem: mm/hugetlb Joao Martins <joao.m.martins@oracle.com>: mm/hugetlb: fix refs calculation from unaligned @vaddr fs/hfs/bfind.c | 14 +++++++++++++- fs/hfs/bnode.c | 25 ++++++++++++++++++++----- fs/hfs/btree.h | 7 +++++++ fs/hfs/super.c | 10 +++++----- include/linux/kasan.h | 1 + include/linux/rmap.h | 4 +++- lib/test_hmm.c | 2 -- mm/hugetlb.c | 5 +++-- mm/kasan/kasan.h | 12 ++++++++++++ mm/page_alloc.c | 30 ++++++++++++++++++++++-------- mm/slab.h | 15 +++++++++++---- mm/slub.c | 14 -------------- 12 files changed, 97 insertions(+), 42 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-07-08 0:59 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-07-08 0:59 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 54 patches, based on a931dd33d370896a683236bba67c0d6f3d01144d. Subsystems affected by this patch series: lib mm/slub mm/secretmem mm/cleanups mm/init debug mm/pagemap mm/mremap Subsystem: lib Zhen Lei <thunder.leizhen@huawei.com>: lib/test: fix spelling mistakes lib: fix spelling mistakes lib: fix spelling mistakes in header files Subsystem: mm/slub Nathan Chancellor <nathan@kernel.org>: Patch series "hexagon: Fix build error with CONFIG_STACKDEPOT and select CONFIG_ARCH_WANT_LD_ORPHAN_WARN": hexagon: handle {,SOFT}IRQENTRY_TEXT in linker script hexagon: use common DISCARDS macro hexagon: select ARCH_WANT_LD_ORPHAN_WARN Oliver Glitta <glittao@gmail.com>: mm/slub: use stackdepot to save stack trace in objects Subsystem: mm/secretmem Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: introduce memfd_secret system call to create "secret" memory areas", v20: mmap: make mlock_future_check() global riscv/Kconfig: make direct map manipulation options depend on MMU set_memory: allow querying whether set_direct_map_*() is actually enabled mm: introduce memfd_secret system call to create "secret" memory areas PM: hibernate: disable when there are active secretmem users arch, mm: wire up memfd_secret system call where relevant secretmem: test: add basic selftest for memfd_secret(2) Subsystem: mm/cleanups Zhen Lei <thunder.leizhen@huawei.com>: mm: fix spelling mistakes in header files Subsystem: mm/init Kefeng Wang <wangkefeng.wang@huawei.com>: Patch series "init_mm: cleanup ARCH's text/data/brk setup code", v3: mm: add setup_initial_init_mm() helper arc: convert to setup_initial_init_mm() arm: convert to setup_initial_init_mm() arm64: convert to setup_initial_init_mm() csky: convert to setup_initial_init_mm() h8300: convert to setup_initial_init_mm() m68k: convert to setup_initial_init_mm() nds32: convert to setup_initial_init_mm() nios2: convert to setup_initial_init_mm() openrisc: convert to setup_initial_init_mm() powerpc: convert to setup_initial_init_mm() riscv: convert to setup_initial_init_mm() s390: convert to setup_initial_init_mm() sh: convert to setup_initial_init_mm() x86: convert to setup_initial_init_mm() Subsystem: debug Stephen Boyd <swboyd@chromium.org>: Patch series "Add build ID to stacktraces", v6: buildid: only consider GNU notes for build ID parsing buildid: add API to parse build ID out of buffer buildid: stash away kernels build ID on init dump_stack: add vmlinux build ID to stack traces module: add printk formats to add module build ID to stacktraces arm64: stacktrace: use %pSb for backtrace printing x86/dumpstack: use %pSb/%pBb for backtrace printing scripts/decode_stacktrace.sh: support debuginfod scripts/decode_stacktrace.sh: silence stderr messages from addr2line/nm scripts/decode_stacktrace.sh: indicate 'auto' can be used for base path buildid: mark some arguments const buildid: fix kernel-doc notation kdump: use vmlinux_build_id to simplify Subsystem: mm/pagemap "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t * mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t * Subsystem: mm/mremap "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "mrermap fixes", v2: selftest/mremap_test: update the test to handle pagesize other than 4K selftest/mremap_test: avoid crash with static build mm/mremap: convert huge PUD move to separate helper mm/mremap: don't enable optimized PUD move if page table levels is 2 mm/mremap: use pmd/pud_poplulate to update page table entries mm/mremap: hold the rmap lock in write mode when moving page table entries. Patch series "Speedup mremap on ppc64", v8: mm/mremap: allow arch runtime override powerpc/book3s64/mm: update flush_tlb_range to flush page walk cache powerpc/mm: enable HAVE_MOVE_PMD support Documentation/core-api/printk-formats.rst | 11 arch/alpha/include/asm/pgtable.h | 8 arch/arc/mm/init.c | 5 arch/arm/include/asm/pgtable-3level.h | 2 arch/arm/kernel/setup.c | 5 arch/arm64/include/asm/Kbuild | 1 arch/arm64/include/asm/cacheflush.h | 6 arch/arm64/include/asm/kfence.h | 2 arch/arm64/include/asm/pgtable.h | 8 arch/arm64/include/asm/set_memory.h | 17 + arch/arm64/include/uapi/asm/unistd.h | 1 arch/arm64/kernel/machine_kexec.c | 1 arch/arm64/kernel/setup.c | 5 arch/arm64/kernel/stacktrace.c | 2 arch/arm64/mm/mmu.c | 7 arch/arm64/mm/pageattr.c | 13 arch/csky/kernel/setup.c | 5 arch/h8300/kernel/setup.c | 5 arch/hexagon/Kconfig | 1 arch/hexagon/kernel/vmlinux.lds.S | 9 arch/ia64/include/asm/pgtable.h | 4 arch/m68k/include/asm/motorola_pgtable.h | 2 arch/m68k/kernel/setup_mm.c | 5 arch/m68k/kernel/setup_no.c | 5 arch/mips/include/asm/pgtable-64.h | 8 arch/nds32/kernel/setup.c | 5 arch/nios2/kernel/setup.c | 5 arch/openrisc/kernel/setup.c | 5 arch/parisc/include/asm/pgtable.h | 4 arch/powerpc/include/asm/book3s/64/pgtable.h | 11 arch/powerpc/include/asm/book3s/64/tlbflush-radix.h | 2 arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 6 arch/powerpc/include/asm/nohash/64/pgtable.h | 6 arch/powerpc/include/asm/tlb.h | 6 arch/powerpc/kernel/setup-common.c | 5 arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 8 arch/powerpc/mm/book3s64/radix_pgtable.c | 6 arch/powerpc/mm/book3s64/radix_tlb.c | 44 +- arch/powerpc/mm/pgtable_64.c | 4 arch/powerpc/platforms/Kconfig.cputype | 2 arch/riscv/Kconfig | 4 arch/riscv/include/asm/pgtable-64.h | 4 arch/riscv/include/asm/unistd.h | 1 arch/riscv/kernel/setup.c | 5 arch/s390/kernel/setup.c | 5 arch/sh/include/asm/pgtable-3level.h | 4 arch/sh/kernel/setup.c | 5 arch/sparc/include/asm/pgtable_32.h | 6 arch/sparc/include/asm/pgtable_64.h | 10 arch/um/include/asm/pgtable-3level.h | 2 arch/x86/entry/syscalls/syscall_32.tbl | 1 arch/x86/entry/syscalls/syscall_64.tbl | 1 arch/x86/include/asm/pgtable.h | 8 arch/x86/kernel/dumpstack.c | 2 arch/x86/kernel/setup.c | 5 arch/x86/mm/init_64.c | 4 arch/x86/mm/pat/set_memory.c | 4 arch/x86/mm/pgtable.c | 2 include/asm-generic/pgtable-nop4d.h | 2 include/asm-generic/pgtable-nopmd.h | 2 include/asm-generic/pgtable-nopud.h | 4 include/linux/bootconfig.h | 4 include/linux/buildid.h | 10 include/linux/compaction.h | 4 include/linux/cpumask.h | 2 include/linux/crash_core.h | 12 include/linux/debugobjects.h | 2 include/linux/hmm.h | 2 include/linux/hugetlb.h | 6 include/linux/kallsyms.h | 21 + include/linux/list_lru.h | 4 include/linux/lru_cache.h | 8 include/linux/mm.h | 3 include/linux/mmu_notifier.h | 8 include/linux/module.h | 9 include/linux/nodemask.h | 6 include/linux/percpu-defs.h | 2 include/linux/percpu-refcount.h | 2 include/linux/pgtable.h | 4 include/linux/scatterlist.h | 2 include/linux/secretmem.h | 54 +++ include/linux/set_memory.h | 12 include/linux/shrinker.h | 2 include/linux/syscalls.h | 1 include/linux/vmalloc.h | 4 include/uapi/asm-generic/unistd.h | 7 include/uapi/linux/magic.h | 1 init/Kconfig | 1 init/main.c | 2 kernel/crash_core.c | 50 --- kernel/kallsyms.c | 104 +++++-- kernel/module.c | 42 ++ kernel/power/hibernate.c | 5 kernel/sys_ni.c | 2 lib/Kconfig.debug | 17 - lib/asn1_encoder.c | 2 lib/buildid.c | 80 ++++- lib/devres.c | 2 lib/dump_stack.c | 13 lib/dynamic_debug.c | 2 lib/fonts/font_pearl_8x8.c | 2 lib/kfifo.c | 2 lib/list_sort.c | 2 lib/nlattr.c | 4 lib/oid_registry.c | 2 lib/pldmfw/pldmfw.c | 2 lib/reed_solomon/test_rslib.c | 2 lib/refcount.c | 2 lib/rhashtable.c | 2 lib/sbitmap.c | 2 lib/scatterlist.c | 4 lib/seq_buf.c | 2 lib/sort.c | 2 lib/stackdepot.c | 2 lib/test_bitops.c | 2 lib/test_bpf.c | 2 lib/test_kasan.c | 2 lib/test_kmod.c | 6 lib/test_scanf.c | 2 lib/vsprintf.c | 10 mm/Kconfig | 4 mm/Makefile | 1 mm/gup.c | 12 mm/init-mm.c | 9 mm/internal.h | 3 mm/mlock.c | 3 mm/mmap.c | 5 mm/mremap.c | 108 ++++++- mm/secretmem.c | 254 +++++++++++++++++ mm/slub.c | 79 +++-- scripts/checksyscalls.sh | 4 scripts/decode_stacktrace.sh | 89 +++++- tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 3 tools/testing/selftests/vm/memfd_secret.c | 296 ++++++++++++++++++++ tools/testing/selftests/vm/mremap_test.c | 116 ++++--- tools/testing/selftests/vm/run_vmtests.sh | 17 + 137 files changed, 1470 insertions(+), 442 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-07-01 1:46 Andrew Morton 2021-07-03 0:28 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-07-01 1:46 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits This is the rest of the -mm tree, less 66 patches which are dependent on things which are (or were recently) in linux-next. I'll trickle that material over next week. 192 patches, based on 7cf3dead1ad70c72edb03e2d98e1f3dcd332cdb2 plus the June 28 sendings. Subsystems affected by this patch series: mm/hugetlb mm/userfaultfd mm/vmscan mm/kconfig mm/proc mm/z3fold mm/zbud mm/ras mm/mempolicy mm/memblock mm/migration mm/thp mm/nommu mm/kconfig mm/madvise mm/memory-hotplug mm/zswap mm/zsmalloc mm/zram mm/cleanups mm/kfence mm/hmm procfs sysctl misc core-kernel lib lz4 checkpatch init kprobes nilfs2 hfs signals exec kcov selftests compress/decompress ipc Subsystem: mm/hugetlb Muchun Song <songmuchun@bytedance.com>: Patch series "Free some vmemmap pages of HugeTLB page", v23: mm: memory_hotplug: factor out bootmem core functions to bootmem_info.c mm: hugetlb: introduce a new config HUGETLB_PAGE_FREE_VMEMMAP mm: hugetlb: gather discrete indexes of tail page mm: hugetlb: free the vmemmap pages associated with each HugeTLB page mm: hugetlb: defer freeing of HugeTLB pages mm: hugetlb: alloc the vmemmap pages associated with each HugeTLB page mm: hugetlb: add a kernel parameter hugetlb_free_vmemmap mm: memory_hotplug: disable memmap_on_memory when hugetlb_free_vmemmap enabled mm: hugetlb: introduce nr_free_vmemmap_pages in the struct hstate Shixin Liu <liushixin2@huawei.com>: mm/debug_vm_pgtable: move {pmd/pud}_huge_tests out of CONFIG_TRANSPARENT_HUGEPAGE mm/debug_vm_pgtable: remove redundant pfn_{pmd/pte}() and fix one comment mistake Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for huge_memory:, v3: mm/huge_memory.c: remove dedicated macro HPAGE_CACHE_INDEX_MASK mm/huge_memory.c: use page->deferred_list mm/huge_memory.c: add missing read-only THP checking in transparent_hugepage_enabled() mm/huge_memory.c: remove unnecessary tlb_remove_page_size() for huge zero pmd mm/huge_memory.c: don't discard hugepage if other processes are mapping it Christophe Leroy <christophe.leroy@csgroup.eu>: Patch series "Subject: [PATCH v2 0/5] Implement huge VMAP and VMALLOC on powerpc 8xx", v2: mm/hugetlb: change parameters of arch_make_huge_pte() mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge mm/vmalloc: enable mapping of huge pages at pte level in vmap mm/vmalloc: enable mapping of huge pages at pte level in vmalloc powerpc/8xx: add support for huge pages on VMAP and VMALLOC Nanyong Sun <sunnanyong@huawei.com>: khugepaged: selftests: remove debug_cow Mina Almasry <almasrymina@google.com>: mm, hugetlb: fix racy resv_huge_pages underflow on UFFDIO_COPY Muchun Song <songmuchun@bytedance.com>: Patch series "Split huge PMD mapping of vmemmap pages", v4: mm: sparsemem: split the huge PMD mapping of vmemmap pages mm: sparsemem: use huge PMD mapping for vmemmap pages mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON Mike Kravetz <mike.kravetz@oracle.com>: Patch series "Fix prep_compound_gigantic_page ref count adjustment": hugetlb: remove prep_compound_huge_page cleanup hugetlb: address ref count racing in prep_compound_gigantic_page Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/hwpoison: disable pcp for page_handle_poison() Subsystem: mm/userfaultfd Peter Xu <peterx@redhat.com>: Patch series "userfaultfd/selftests: A few cleanups", v2: userfaultfd/selftests: use user mode only userfaultfd/selftests: remove the time() check on delayed uffd userfaultfd/selftests: dropping VERIFY check in locking_thread userfaultfd/selftests: only dump counts if mode enabled userfaultfd/selftests: unify error handling Patch series "mm/uffd: Misc fix for uffd-wp and one more test": mm/thp: simplify copying of huge zero page pmd when fork mm/userfaultfd: fix uffd-wp special cases for fork() mm/userfaultfd: fail uffd-wp registration if not supported mm/pagemap: export uffd-wp protection information userfaultfd/selftests: add pagemap uffd-wp test Axel Rasmussen <axelrasmussen@google.com>: Patch series "userfaultfd: add minor fault handling for shmem", v6: userfaultfd/shmem: combine shmem_{mcopy_atomic,mfill_zeropage}_pte userfaultfd/shmem: support minor fault registration for shmem userfaultfd/shmem: support UFFDIO_CONTINUE for shmem userfaultfd/shmem: advertise shmem minor fault support userfaultfd/shmem: modify shmem_mfill_atomic_pte to use install_pte() userfaultfd/selftests: use memfd_create for shmem test type userfaultfd/selftests: create alias mappings in the shmem test userfaultfd/selftests: reinitialize test context in each test userfaultfd/selftests: exercise minor fault handling shmem support Subsystem: mm/vmscan Yu Zhao <yuzhao@google.com>: mm/vmscan.c: fix potential deadlock in reclaim_pages() include/trace/events/vmscan.h: remove mm_vmscan_inactive_list_is_low Miaohe Lin <linmiaohe@huawei.com>: mm: workingset: define macro WORKINGSET_SHIFT Subsystem: mm/kconfig Kefeng Wang <wangkefeng.wang@huawei.com>: mm/kconfig: move HOLES_IN_ZONE into mm Subsystem: mm/proc Mike Rapoport <rppt@linux.ibm.com>: docs: proc.rst: meminfo: briefly describe gaps in memory accounting David Hildenbrand <david@redhat.com>: Patch series "fs/proc/kcore: don't read offline sections, logically offline pages and hwpoisoned pages", v3: fs/proc/kcore: drop KCORE_REMAP and KCORE_OTHER fs/proc/kcore: pfn_is_ram check only applies to KCORE_RAM fs/proc/kcore: don't read offline sections, logically offline pages and hwpoisoned pages mm: introduce page_offline_(begin|end|freeze|thaw) to synchronize setting PageOffline() virtio-mem: use page_offline_(start|end) when setting PageOffline() fs/proc/kcore: use page_offline_(freeze|thaw) Subsystem: mm/z3fold Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for z3fold": mm/z3fold: define macro NCHUNKS as TOTAL_CHUNKS - ZHDR_CHUNKS mm/z3fold: avoid possible underflow in z3fold_alloc() mm/z3fold: remove magic number in z3fold_create_pool() mm/z3fold: remove unused function handle_to_z3fold_header() mm/z3fold: fix potential memory leak in z3fold_destroy_pool() mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page Subsystem: mm/zbud Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanups for zbud", v2: mm/zbud: reuse unbuddied[0] as buddied in zbud_pool mm/zbud: don't export any zbud API Subsystem: mm/ras YueHaibing <yuehaibing@huawei.com>: mm/compaction: use DEVICE_ATTR_WO macro Liu Xiang <liu.xiang@zlingsmart.com>: mm: compaction: remove duplicate !list_empty(&sublist) check Wonhyuk Yang <vvghjk1234@gmail.com>: mm/compaction: fix 'limit' in fast_isolate_freepages Subsystem: mm/mempolicy Feng Tang <feng.tang@intel.com>: Patch series "mm/mempolicy: some fix and semantics cleanup", v4: mm/mempolicy: cleanup nodemask intersection check for oom mm/mempolicy: don't handle MPOL_LOCAL like a fake MPOL_PREFERRED policy mm/mempolicy: unify the parameter sanity check for mbind and set_mempolicy Yang Shi <shy828301@gmail.com>: mm: mempolicy: don't have to split pmd for huge zero page Ben Widawsky <ben.widawsky@intel.com>: mm/mempolicy: use unified 'nodes' for bind/interleave/prefer policies Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: Patch series "arm64: drop pfn_valid_within() and simplify pfn_valid()", v4: include/linux/mmzone.h: add documentation for pfn_valid() memblock: update initialization of reserved pages arm64: decouple check whether pfn is in linear map from pfn_valid() arm64: drop pfn_valid_within() and simplify pfn_valid() Anshuman Khandual <anshuman.khandual@arm.com>: arm64/mm: drop HAVE_ARCH_PFN_VALID Subsystem: mm/migration Muchun Song <songmuchun@bytedance.com>: mm: migrate: fix missing update page_private to hugetlb_page_subpool Subsystem: mm/thp Collin Fijalkovich <cfijalkovich@google.com>: mm, thp: relax the VM_DENYWRITE constraint on file-backed THPs Yang Shi <shy828301@gmail.com>: mm: memory: add orig_pmd to struct vm_fault mm: memory: make numa_migrate_prep() non-static mm: thp: refactor NUMA fault handling mm: migrate: account THP NUMA migration counters correctly mm: migrate: don't split THP for misplaced NUMA page mm: migrate: check mapcount for THP instead of refcount mm: thp: skip make PMD PROT_NONE if THP migration is not supported Anshuman Khandual <anshuman.khandual@arm.com>: mm/thp: make ARCH_ENABLE_SPLIT_PMD_PTLOCK dependent on PGTABLE_LEVELS > 2 Yang Shi <shy828301@gmail.com>: mm: rmap: make try_to_unmap() void function Hugh Dickins <hughd@google.com>: mm/thp: remap_page() is only needed on anonymous THP mm: hwpoison_user_mappings() try_to_unmap() with TTU_SYNC "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/thp: fix strncpy warning Subsystem: mm/nommu Chen Li <chenli@uniontech.com>: nommu: remove __GFP_HIGHMEM in vmalloc/vzalloc Liam Howlett <liam.howlett@oracle.com>: mm/nommu: unexport do_munmap() Subsystem: mm/kconfig Kefeng Wang <wangkefeng.wang@huawei.com>: mm: generalize ZONE_[DMA|DMA32] Subsystem: mm/madvise David Hildenbrand <david@redhat.com>: Patch series "mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables", v2: mm: make variable names for populate_vma_page_range() consistent mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables MAINTAINERS: add tools/testing/selftests/vm/ to MEMORY MANAGEMENT selftests/vm: add protection_keys_32 / protection_keys_64 to gitignore selftests/vm: add test for MADV_POPULATE_(READ|WRITE) Subsystem: mm/memory-hotplug Liam Mark <lmark@codeaurora.org>: mm/memory_hotplug: rate limit page migration warnings Oscar Salvador <osalvador@suse.de>: mm,memory_hotplug: drop unneeded locking Subsystem: mm/zswap Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for zswap": mm/zswap.c: remove unused function zswap_debugfs_exit() mm/zswap.c: avoid unnecessary copy-in at map time mm/zswap.c: fix two bugs in zswap_writeback_entry() Subsystem: mm/zsmalloc Zhaoyang Huang <zhaoyang.huang@unisoc.com>: mm: zram: amend SLAB_RECLAIM_ACCOUNT on zspage_cachep Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup for zsmalloc": mm/zsmalloc.c: remove confusing code in obj_free() mm/zsmalloc.c: improve readability for async_free_zspage() Subsystem: mm/zram Yue Hu <huyue2@yulong.com>: zram: move backing_dev under macro CONFIG_ZRAM_WRITEBACK Subsystem: mm/cleanups Hyeonggon Yoo <42.hyeyoo@gmail.com>: mm: fix typos and grammar error in comments Anshuman Khandual <anshuman.khandual@arm.com>: mm: define default value for FIRST_USER_ADDRESS Zhen Lei <thunder.leizhen@huawei.com>: mm: fix spelling mistakes Mel Gorman <mgorman@techsingularity.net>: Patch series "Clean W=1 build warnings for mm/": mm/vmscan: remove kerneldoc-like comment from isolate_lru_pages mm/vmalloc: include header for prototype of set_iounmap_nonlazy mm/page_alloc: make should_fail_alloc_page() static mm/mapping_dirty_helpers: remove double Note in kerneldoc mm/memcontrol.c: fix kerneldoc comment for mem_cgroup_calculate_protection mm/memory_hotplug: fix kerneldoc comment for __try_online_node mm/memory_hotplug: fix kerneldoc comment for __remove_memory mm/zbud: add kerneldoc fields for zbud_pool mm/z3fold: add kerneldoc fields for z3fold_pool mm/swap: make swap_address_space an inline function mm/mmap_lock: remove dead code for !CONFIG_TRACING configurations mm/page_alloc: move prototype for find_suitable_fallback mm/swap: make NODE_DATA an inline function on CONFIG_FLATMEM Anshuman Khandual <anshuman.khandual@arm.com>: mm/thp: define default pmd_pgtable() Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: unconditionally use unbound work queue Subsystem: mm/hmm Alistair Popple <apopple@nvidia.com>: Patch series "Add support for SVM atomics in Nouveau", v11: mm: remove special swap entry functions mm/swapops: rework swap entry manipulation code mm/rmap: split try_to_munlock from try_to_unmap mm/rmap: split migration into its own function mm: rename migrate_pgmap_owner mm/memory.c: allow different return codes for copy_nonpresent_pte() mm: device exclusive memory access mm: selftests for exclusive device memory nouveau/svm: refactor nouveau_range_fault nouveau/svm: implement atomic SVM access Subsystem: procfs Marcelo Henrique Cerri <marcelo.cerri@canonical.com>: proc: Avoid mixing integer types in mem_rw() ZHOUFENG <zhoufeng.zf@bytedance.com>: fs/proc/kcore.c: add mmap interface Kalesh Singh <kaleshsingh@google.com>: procfs: allow reading fdinfo with PTRACE_MODE_READ procfs/dmabuf: add inode number to /proc/*/fdinfo Subsystem: sysctl Jiapeng Chong <jiapeng.chong@linux.alibaba.com>: sysctl: remove redundant assignment to first Subsystem: misc Andy Shevchenko <andriy.shevchenko@linux.intel.com>: drm: include only needed headers in ascii85.h Subsystem: core-kernel Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: split out panic and oops helpers Subsystem: lib Zhen Lei <thunder.leizhen@huawei.com>: lib: decompress_bunzip2: remove an unneeded semicolon Andy Shevchenko <andriy.shevchenko@linux.intel.com>: Patch series "lib/string_helpers: get rid of ugly *_escape_mem_ascii()", v3: lib/string_helpers: switch to use BIT() macro lib/string_helpers: move ESCAPE_NP check inside 'else' branch in a loop lib/string_helpers: drop indentation level in string_escape_mem() lib/string_helpers: introduce ESCAPE_NA for escaping non-ASCII lib/string_helpers: introduce ESCAPE_NAP to escape non-ASCII and non-printable lib/string_helpers: allow to append additional characters to be escaped lib/test-string_helpers: print flags in hexadecimal format lib/test-string_helpers: get rid of trailing comma in terminators lib/test-string_helpers: add test cases for new features MAINTAINERS: add myself as designated reviewer for generic string library seq_file: introduce seq_escape_mem() seq_file: add seq_escape_str() as replica of string_escape_str() seq_file: convert seq_escape() to use seq_escape_str() nfsd: avoid non-flexible API in seq_quote_mem() seq_file: drop unused *_escape_mem_ascii() Trent Piepho <tpiepho@gmail.com>: lib/math/rational.c: fix divide by zero lib/math/rational: add Kunit test cases Zhen Lei <thunder.leizhen@huawei.com>: lib/decompressors: fix spelling mistakes lib/mpi: fix spelling mistakes Alexey Dobriyan <adobriyan@gmail.com>: lib: memscan() fixlet lib: uninline simple_strtoull() Matteo Croce <mcroce@microsoft.com>: lib/test_string.c: allow module removal Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: split out kstrtox() and simple_strtox() to a separate header Subsystem: lz4 Rajat Asthana <thisisrast7@gmail.com>: lz4_decompress: declare LZ4_decompress_safe_withPrefix64k static Dimitri John Ledkov <dimitri.ledkov@canonical.com>: lib/decompress_unlz4.c: correctly handle zero-padding around initrds. Subsystem: checkpatch Guenter Roeck <linux@roeck-us.net>: checkpatch: scripts/spdxcheck.py now requires python3 Joe Perches <joe@perches.com>: checkpatch: improve the indented label test Guenter Roeck <linux@roeck-us.net>: checkpatch: do not complain about positive return values starting with EPOLL Subsystem: init Andrew Halaney <ahalaney@redhat.com>: init: print out unknown kernel parameters Subsystem: kprobes Barry Song <song.bao.hua@hisilicon.com>: kprobes: remove duplicated strong free_insn_page in x86 and s390 Subsystem: nilfs2 Colin Ian King <colin.king@canonical.com>: nilfs2: remove redundant continue statement in a while-loop Subsystem: hfs Zhen Lei <thunder.leizhen@huawei.com>: hfsplus: remove unnecessary oom message Chung-Chiang Cheng <shepjeng@gmail.com>: hfsplus: report create_date to kstat.btime Subsystem: signals Al Viro <viro@zeniv.linux.org.uk>: x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned Subsystem: exec Alexey Dobriyan <adobriyan@gmail.com>: exec: remove checks in __register_bimfmt() Subsystem: kcov Marco Elver <elver@google.com>: kcov: add __no_sanitize_coverage to fix noinstr for all architectures Subsystem: selftests Dave Hansen <dave.hansen@linux.intel.com>: Patch series "selftests/vm/pkeys: Bug fixes and a new test": selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random selftests/vm/pkeys: handle negative sys_pkey_alloc() return code selftests/vm/pkeys: refill shadow register after implicit kernel write selftests/vm/pkeys: exercise x86 XSAVE init state Subsystem: compress/decompress Yu Kuai <yukuai3@huawei.com>: lib/decompressors: remove set but not used variabled 'level' Subsystem: ipc Vasily Averin <vvs@virtuozzo.com>: Patch series "ipc: allocations cleanup", v2: ipc sem: use kvmalloc for sem_undo allocation ipc: use kmalloc for msg_queue and shmid_kernel Manfred Spraul <manfred@colorfullife.com>: ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock ipc/util.c: use binary search for max_idx Documentation/admin-guide/kernel-parameters.txt | 35 Documentation/admin-guide/mm/hugetlbpage.rst | 11 Documentation/admin-guide/mm/memory-hotplug.rst | 13 Documentation/admin-guide/mm/pagemap.rst | 2 Documentation/admin-guide/mm/userfaultfd.rst | 3 Documentation/core-api/kernel-api.rst | 7 Documentation/filesystems/proc.rst | 48 Documentation/vm/hmm.rst | 19 Documentation/vm/unevictable-lru.rst | 33 MAINTAINERS | 10 arch/alpha/Kconfig | 5 arch/alpha/include/asm/pgalloc.h | 1 arch/alpha/include/asm/pgtable.h | 1 arch/alpha/include/uapi/asm/mman.h | 3 arch/alpha/kernel/setup.c | 2 arch/arc/include/asm/pgalloc.h | 2 arch/arc/include/asm/pgtable.h | 8 arch/arm/Kconfig | 3 arch/arm/include/asm/pgalloc.h | 1 arch/arm64/Kconfig | 15 arch/arm64/include/asm/hugetlb.h | 3 arch/arm64/include/asm/memory.h | 2 arch/arm64/include/asm/page.h | 4 arch/arm64/include/asm/pgalloc.h | 1 arch/arm64/include/asm/pgtable.h | 2 arch/arm64/kernel/setup.c | 1 arch/arm64/kvm/mmu.c | 2 arch/arm64/mm/hugetlbpage.c | 5 arch/arm64/mm/init.c | 51 arch/arm64/mm/ioremap.c | 4 arch/arm64/mm/mmu.c | 22 arch/csky/include/asm/pgalloc.h | 2 arch/csky/include/asm/pgtable.h | 1 arch/hexagon/include/asm/pgtable.h | 4 arch/ia64/Kconfig | 7 arch/ia64/include/asm/pal.h | 1 arch/ia64/include/asm/pgalloc.h | 1 arch/ia64/include/asm/pgtable.h | 1 arch/m68k/Kconfig | 5 arch/m68k/include/asm/mcf_pgalloc.h | 2 arch/m68k/include/asm/mcf_pgtable.h | 2 arch/m68k/include/asm/motorola_pgalloc.h | 1 arch/m68k/include/asm/motorola_pgtable.h | 2 arch/m68k/include/asm/pgtable_mm.h | 1 arch/m68k/include/asm/sun3_pgalloc.h | 1 arch/microblaze/Kconfig | 4 arch/microblaze/include/asm/pgalloc.h | 2 arch/microblaze/include/asm/pgtable.h | 2 arch/mips/Kconfig | 10 arch/mips/include/asm/pgalloc.h | 1 arch/mips/include/asm/pgtable-32.h | 1 arch/mips/include/asm/pgtable-64.h | 1 arch/mips/include/uapi/asm/mman.h | 3 arch/mips/kernel/relocate.c | 1 arch/mips/sgi-ip22/ip22-reset.c | 1 arch/mips/sgi-ip32/ip32-reset.c | 1 arch/nds32/include/asm/pgalloc.h | 5 arch/nios2/include/asm/pgalloc.h | 1 arch/nios2/include/asm/pgtable.h | 2 arch/openrisc/include/asm/pgalloc.h | 2 arch/openrisc/include/asm/pgtable.h | 1 arch/parisc/include/asm/pgalloc.h | 1 arch/parisc/include/asm/pgtable.h | 2 arch/parisc/include/uapi/asm/mman.h | 3 arch/parisc/kernel/pdc_chassis.c | 1 arch/powerpc/Kconfig | 6 arch/powerpc/include/asm/book3s/pgtable.h | 1 arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 5 arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 43 arch/powerpc/include/asm/nohash/32/pgtable.h | 1 arch/powerpc/include/asm/nohash/64/pgtable.h | 2 arch/powerpc/include/asm/pgalloc.h | 5 arch/powerpc/include/asm/pgtable.h | 6 arch/powerpc/kernel/setup-common.c | 1 arch/powerpc/platforms/Kconfig.cputype | 1 arch/riscv/Kconfig | 5 arch/riscv/include/asm/pgalloc.h | 2 arch/riscv/include/asm/pgtable.h | 2 arch/s390/Kconfig | 6 arch/s390/include/asm/pgalloc.h | 3 arch/s390/include/asm/pgtable.h | 5 arch/s390/kernel/ipl.c | 1 arch/s390/kernel/kprobes.c | 5 arch/s390/mm/pgtable.c | 2 arch/sh/include/asm/pgalloc.h | 1 arch/sh/include/asm/pgtable.h | 2 arch/sparc/Kconfig | 5 arch/sparc/include/asm/pgalloc_32.h | 1 arch/sparc/include/asm/pgalloc_64.h | 1 arch/sparc/include/asm/pgtable_32.h | 3 arch/sparc/include/asm/pgtable_64.h | 8 arch/sparc/kernel/sstate.c | 1 arch/sparc/mm/hugetlbpage.c | 6 arch/sparc/mm/init_64.c | 1 arch/um/drivers/mconsole_kern.c | 1 arch/um/include/asm/pgalloc.h | 1 arch/um/include/asm/pgtable-2level.h | 1 arch/um/include/asm/pgtable-3level.h | 1 arch/um/kernel/um_arch.c | 1 arch/x86/Kconfig | 17 arch/x86/include/asm/desc.h | 1 arch/x86/include/asm/pgalloc.h | 2 arch/x86/include/asm/pgtable_types.h | 2 arch/x86/kernel/cpu/mshyperv.c | 1 arch/x86/kernel/kprobes/core.c | 6 arch/x86/kernel/setup.c | 1 arch/x86/mm/init_64.c | 21 arch/x86/mm/pgtable.c | 34 arch/x86/purgatory/purgatory.c | 2 arch/x86/xen/enlighten.c | 1 arch/xtensa/include/asm/pgalloc.h | 2 arch/xtensa/include/asm/pgtable.h | 1 arch/xtensa/include/uapi/asm/mman.h | 3 arch/xtensa/platforms/iss/setup.c | 1 drivers/block/zram/zram_drv.h | 2 drivers/bus/brcmstb_gisb.c | 1 drivers/char/ipmi/ipmi_msghandler.c | 1 drivers/clk/analogbits/wrpll-cln28hpc.c | 4 drivers/edac/altera_edac.c | 1 drivers/firmware/google/gsmi.c | 1 drivers/gpu/drm/nouveau/include/nvif/if000c.h | 1 drivers/gpu/drm/nouveau/nouveau_svm.c | 162 ++- drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | 1 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c | 6 drivers/hv/vmbus_drv.c | 1 drivers/hwtracing/coresight/coresight-cpu-debug.c | 1 drivers/leds/trigger/ledtrig-activity.c | 1 drivers/leds/trigger/ledtrig-heartbeat.c | 1 drivers/leds/trigger/ledtrig-panic.c | 1 drivers/misc/bcm-vk/bcm_vk_dev.c | 1 drivers/misc/ibmasm/heartbeat.c | 1 drivers/misc/pvpanic/pvpanic.c | 1 drivers/net/ipa/ipa_smp2p.c | 1 drivers/parisc/power.c | 1 drivers/power/reset/ltc2952-poweroff.c | 1 drivers/remoteproc/remoteproc_core.c | 1 drivers/s390/char/con3215.c | 1 drivers/s390/char/con3270.c | 1 drivers/s390/char/sclp.c | 1 drivers/s390/char/sclp_con.c | 1 drivers/s390/char/sclp_vt220.c | 1 drivers/s390/char/zcore.c | 1 drivers/soc/bcm/brcmstb/pm/pm-arm.c | 1 drivers/staging/olpc_dcon/olpc_dcon.c | 1 drivers/video/fbdev/hyperv_fb.c | 1 drivers/virtio/virtio_mem.c | 2 fs/Kconfig | 15 fs/exec.c | 3 fs/hfsplus/inode.c | 5 fs/hfsplus/xattr.c | 1 fs/nfsd/nfs4state.c | 2 fs/nilfs2/btree.c | 1 fs/open.c | 13 fs/proc/base.c | 6 fs/proc/fd.c | 20 fs/proc/kcore.c | 136 ++ fs/proc/task_mmu.c | 34 fs/seq_file.c | 43 fs/userfaultfd.c | 15 include/asm-generic/bug.h | 3 include/linux/ascii85.h | 3 include/linux/bootmem_info.h | 68 + include/linux/compat.h | 2 include/linux/compiler-clang.h | 17 include/linux/compiler-gcc.h | 6 include/linux/compiler_types.h | 2 include/linux/huge_mm.h | 74 - include/linux/hugetlb.h | 80 + include/linux/hugetlb_cgroup.h | 19 include/linux/kcore.h | 3 include/linux/kernel.h | 227 ---- include/linux/kprobes.h | 1 include/linux/kstrtox.h | 155 ++ include/linux/memblock.h | 4 include/linux/memory_hotplug.h | 27 include/linux/mempolicy.h | 9 include/linux/memremap.h | 2 include/linux/migrate.h | 27 include/linux/mm.h | 18 include/linux/mm_types.h | 2 include/linux/mmu_notifier.h | 26 include/linux/mmzone.h | 27 include/linux/mpi.h | 4 include/linux/page-flags.h | 22 include/linux/panic.h | 98 + include/linux/panic_notifier.h | 12 include/linux/pgtable.h | 44 include/linux/rmap.h | 13 include/linux/seq_file.h | 10 include/linux/shmem_fs.h | 19 include/linux/signal.h | 2 include/linux/string.h | 7 include/linux/string_helpers.h | 31 include/linux/sunrpc/cache.h | 1 include/linux/swap.h | 19 include/linux/swapops.h | 171 +-- include/linux/thread_info.h | 1 include/linux/userfaultfd_k.h | 5 include/linux/vmalloc.h | 15 include/linux/zbud.h | 23 include/trace/events/vmscan.h | 41 include/uapi/asm-generic/mman-common.h | 3 include/uapi/linux/mempolicy.h | 1 include/uapi/linux/userfaultfd.h | 7 init/main.c | 42 ipc/msg.c | 6 ipc/sem.c | 25 ipc/shm.c | 6 ipc/util.c | 44 ipc/util.h | 3 kernel/hung_task.c | 1 kernel/kexec_core.c | 1 kernel/kprobes.c | 2 kernel/panic.c | 1 kernel/rcu/tree.c | 2 kernel/signal.c | 14 kernel/sysctl.c | 4 kernel/trace/trace.c | 1 lib/Kconfig.debug | 12 lib/decompress_bunzip2.c | 6 lib/decompress_unlz4.c | 8 lib/decompress_unlzo.c | 3 lib/decompress_unxz.c | 2 lib/decompress_unzstd.c | 4 lib/kstrtox.c | 5 lib/lz4/lz4_decompress.c | 2 lib/math/Makefile | 1 lib/math/rational-test.c | 56 + lib/math/rational.c | 16 lib/mpi/longlong.h | 4 lib/mpi/mpicoder.c | 6 lib/mpi/mpiutil.c | 2 lib/parser.c | 1 lib/string.c | 2 lib/string_helpers.c | 142 +- lib/test-string_helpers.c | 157 ++- lib/test_hmm.c | 127 ++ lib/test_hmm_uapi.h | 2 lib/test_string.c | 5 lib/vsprintf.c | 1 lib/xz/xz_dec_bcj.c | 2 lib/xz/xz_dec_lzma2.c | 8 lib/zlib_inflate/inffast.c | 2 lib/zstd/huf.h | 2 mm/Kconfig | 16 mm/Makefile | 2 mm/bootmem_info.c | 127 ++ mm/compaction.c | 20 mm/debug_vm_pgtable.c | 109 -- mm/gup.c | 58 + mm/hmm.c | 12 mm/huge_memory.c | 269 ++--- mm/hugetlb.c | 369 +++++-- mm/hugetlb_vmemmap.c | 332 ++++++ mm/hugetlb_vmemmap.h | 53 - mm/internal.h | 29 mm/kfence/core.c | 4 mm/khugepaged.c | 20 mm/madvise.c | 66 + mm/mapping_dirty_helpers.c | 2 mm/memblock.c | 28 mm/memcontrol.c | 4 mm/memory-failure.c | 38 mm/memory.c | 239 +++- mm/memory_hotplug.c | 161 --- mm/mempolicy.c | 323 ++---- mm/migrate.c | 268 +---- mm/mlock.c | 12 mm/mmap_lock.c | 59 - mm/mprotect.c | 18 mm/nommu.c | 5 mm/oom_kill.c | 2 mm/page_alloc.c | 5 mm/page_vma_mapped.c | 15 mm/rmap.c | 644 +++++++++--- mm/shmem.c | 125 -- mm/sparse-vmemmap.c | 432 +++++++- mm/sparse.c | 1 mm/swap.c | 2 mm/swapfile.c | 2 mm/userfaultfd.c | 249 ++-- mm/util.c | 40 mm/vmalloc.c | 37 mm/vmscan.c | 20 mm/workingset.c | 10 mm/z3fold.c | 39 mm/zbud.c | 235 ++-- mm/zsmalloc.c | 5 mm/zswap.c | 26 scripts/checkpatch.pl | 16 tools/testing/selftests/vm/.gitignore | 3 tools/testing/selftests/vm/Makefile | 5 tools/testing/selftests/vm/hmm-tests.c | 158 +++ tools/testing/selftests/vm/khugepaged.c | 4 tools/testing/selftests/vm/madv_populate.c | 342 ++++++ tools/testing/selftests/vm/pkey-x86.h | 1 tools/testing/selftests/vm/protection_keys.c | 85 + tools/testing/selftests/vm/run_vmtests.sh | 16 tools/testing/selftests/vm/userfaultfd.c | 1094 ++++++++++----------- 299 files changed, 6277 insertions(+), 3183 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-07-01 1:46 incoming Andrew Morton @ 2021-07-03 0:28 ` Linus Torvalds 2021-07-03 1:06 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2021-07-03 0:28 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Wed, Jun 30, 2021 at 6:46 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > This is the rest of the -mm tree, less 66 patches which are dependent on > things which are (or were recently) in linux-next. I'll trickle that > material over next week. I haven't bisected this yet, but with the current -git I'm getting watchdog: BUG: soft lockup - CPU#41 stuck for 49s! and the common call chain seems to be in flush_tlb_mm_range -> on_each_cpu_cond_mask. Commit e058a84bfddc42ba356a2316f2cf1141974625c9 is good, and looking at the pulls and merges I've done since, this -mm series looks like the obvious culprit. I'll go start bisection, but I thought I'd give a heads-up in case somebody else has seen TLB-flush-related lockups and already figured out the guilty party.. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-07-03 0:28 ` incoming Linus Torvalds @ 2021-07-03 1:06 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-07-03 1:06 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Fri, Jul 2, 2021 at 5:28 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Commit e058a84bfddc42ba356a2316f2cf1141974625c9 is good, and looking > at the pulls and merges I've done since, this -mm series looks like > the obvious culprit. No, unless my bisection is wrong, the -mm branch is innocent, and was discarded from the suspects on the very first bisection trial. So never mind. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-06-25 1:38 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-25 1:38 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 24 patches, based on 4a09d388f2ab382f217a764e6a152b3f614246f6. Subsystems affected by this patch series: mm/thp nilfs2 mm/vmalloc kthread mm/hugetlb mm/memory-failure mm/pagealloc MAINTAINERS mailmap Subsystem: mm/thp Hugh Dickins <hughd@google.com>: Patch series "mm: page_vma_mapped_walk() cleanup and THP fixes": mm: page_vma_mapped_walk(): use page for pvmw->page mm: page_vma_mapped_walk(): settle PageHuge on entry mm: page_vma_mapped_walk(): use pmde for *pvmw->pmd mm: page_vma_mapped_walk(): prettify PVMW_MIGRATION block mm: page_vma_mapped_walk(): crossing page table boundary mm: page_vma_mapped_walk(): add a level of indentation mm: page_vma_mapped_walk(): use goto instead of while (1) mm: page_vma_mapped_walk(): get vma_address_end() earlier mm/thp: fix page_vma_mapped_walk() if THP mapped by ptes mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk() Subsystem: nilfs2 Pavel Skripkin <paskripkin@gmail.com>: nilfs2: fix memory leak in nilfs_sysfs_delete_device_group Subsystem: mm/vmalloc Claudio Imbrenda <imbrenda@linux.ibm.com>: Patch series "mm: add vmalloc_no_huge and use it", v4: mm/vmalloc: add vmalloc_no_huge KVM: s390: prepare for hugepage vmalloc Daniel Axtens <dja@axtens.net>: mm/vmalloc: unbreak kasan vmalloc support Subsystem: kthread Petr Mladek <pmladek@suse.com>: Patch series "kthread_worker: Fix race between kthread_mod_delayed_work(): kthread_worker: split code for canceling the delayed work timer kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Subsystem: mm/hugetlb Hugh Dickins <hughd@google.com>: mm, futex: fix shared futex pgoff on shmem huge page Subsystem: mm/memory-failure Tony Luck <tony.luck@intel.com>: Patch series "mm,hwpoison: fix sending SIGBUS for Action Required MCE", v5: mm/memory-failure: use a mutex to avoid memory_failure() races Aili Yao <yaoaili@kingsoft.com>: mm,hwpoison: return -EHWPOISON to denote that the page has already been poisoned Naoya Horiguchi <naoya.horiguchi@nec.com>: mm/hwpoison: do not lock page again when me_huge_page() successfully recovers Subsystem: mm/pagealloc Rasmus Villemoes <linux@rasmusvillemoes.dk>: mm/page_alloc: __alloc_pages_bulk(): do bounds check before accessing array Mel Gorman <mgorman@techsingularity.net>: mm/page_alloc: do bulk array bounds check after checking populated elements Subsystem: MAINTAINERS Marek Behún <kabel@kernel.org>: MAINTAINERS: fix Marek's identity again Subsystem: mailmap Marek Behún <kabel@kernel.org>: mailmap: add Marek's other e-mail address and identity without diacritics .mailmap | 2 MAINTAINERS | 4 arch/s390/kvm/pv.c | 7 + fs/nilfs2/sysfs.c | 1 include/linux/hugetlb.h | 16 --- include/linux/pagemap.h | 13 +- include/linux/vmalloc.h | 1 kernel/futex.c | 3 kernel/kthread.c | 81 ++++++++++------ mm/hugetlb.c | 5 - mm/memory-failure.c | 83 +++++++++++------ mm/page_alloc.c | 6 + mm/page_vma_mapped.c | 233 +++++++++++++++++++++++++++--------------------- mm/vmalloc.c | 41 ++++++-- 14 files changed, 297 insertions(+), 199 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-06-16 1:22 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-16 1:22 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 18 patches, based on 94f0b2d4a1d0c52035aef425da5e022bd2cb1c71. Subsystems affected by this patch series: mm/memory-failure mm/swap mm/slub mm/hugetlb mm/memory-failure coredump mm/slub mm/thp mm/sparsemem Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm,hwpoison: fix race with hugetlb page allocation Subsystem: mm/swap Peter Xu <peterx@redhat.com>: mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare Subsystem: mm/slub Kees Cook <keescook@chromium.org>: Patch series "Actually fix freelist pointer vs redzoning", v4: mm/slub: clarify verification reporting mm/slub: fix redzoning for small allocations mm/slub: actually fix freelist pointer vs redzoning Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: mm/hugetlb: expand restore_reserve_on_error functionality Subsystem: mm/memory-failure yangerkun <yangerkun@huawei.com>: mm/memory-failure: make sure wait for page writeback in memory_failure Subsystem: coredump Pingfan Liu <kernelfans@gmail.com>: crash_core, vmcoreinfo: append 'SECTION_SIZE_BITS' to vmcoreinfo Subsystem: mm/slub Andrew Morton <akpm@linux-foundation.org>: mm/slub.c: include swab.h Subsystem: mm/thp Xu Yu <xuyu@linux.alibaba.com>: mm, thp: use head page in __migration_entry_wait() Hugh Dickins <hughd@google.com>: Patch series "mm/thp: fix THP splitting unmap BUGs and related", v10: mm/thp: fix __split_huge_pmd_locked() on shmem migration entry mm/thp: make is_huge_zero_pmd() safe and quicker mm/thp: try_to_unmap() use TTU_SYNC for safe splitting mm/thp: fix vma_address() if virtual address below file offset Jue Wang <juew@google.com>: mm/thp: fix page_address_in_vma() on file THP tails Hugh Dickins <hughd@google.com>: mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page() Yang Shi <shy828301@gmail.com>: mm: thp: replace DEBUG_VM BUG with VM_WARN when unmap fails for split Subsystem: mm/sparsemem Miles Chen <miles.chen@mediatek.com>: mm/sparse: fix check_usemap_section_nr warnings Documentation/vm/slub.rst | 10 +-- fs/hugetlbfs/inode.c | 1 include/linux/huge_mm.h | 8 ++ include/linux/hugetlb.h | 8 ++ include/linux/mm.h | 3 + include/linux/rmap.h | 1 include/linux/swapops.h | 15 +++-- kernel/crash_core.c | 1 mm/huge_memory.c | 58 ++++++++++--------- mm/hugetlb.c | 137 +++++++++++++++++++++++++++++++++++++--------- mm/internal.h | 51 ++++++++++++----- mm/memory-failure.c | 36 +++++++++++- mm/memory.c | 41 +++++++++++++ mm/migrate.c | 1 mm/page_vma_mapped.c | 27 +++++---- mm/pgtable-generic.c | 5 - mm/rmap.c | 41 +++++++++---- mm/slab_common.c | 3 - mm/slub.c | 37 +++++------- mm/sparse.c | 13 +++- mm/swapfile.c | 2 mm/truncate.c | 43 ++++++-------- 22 files changed, 388 insertions(+), 154 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-06-05 3:00 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-06-05 3:00 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 13 patches, based on 16f0596fc1d78a1f3ae4628cff962bb297dc908c. Subsystems affected by this patch series: mips mm/kfence init mm/debug mm/pagealloc mm/memory-hotplug mm/hugetlb proc mm/kasan mm/hugetlb lib ocfs2 mailmap Subsystem: mips Thomas Bogendoerfer <tsbogend@alpha.franken.de>: Revert "MIPS: make userspace mapping young by default" Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: use TASK_IDLE when awaiting allocation Subsystem: init Mark Rutland <mark.rutland@arm.com>: pid: take a reference when initializing `cad_pid` Subsystem: mm/debug Gerald Schaefer <gerald.schaefer@linux.ibm.com>: mm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests() Subsystem: mm/pagealloc Ding Hui <dinghui@sangfor.com.cn>: mm/page_alloc: fix counting of free pages after take off from buddy Subsystem: mm/memory-hotplug David Hildenbrand <david@redhat.com>: drivers/base/memory: fix trying offlining memory blocks with memory holes on aarch64 Subsystem: mm/hugetlb Naoya Horiguchi <naoya.horiguchi@nec.com>: hugetlb: pass head page to remove_hugetlb_page() Subsystem: proc David Matlack <dmatlack@google.com>: proc: add .gitignore for proc-subset-pid selftest Subsystem: mm/kasan Yu Kuai <yukuai3@huawei.com>: mm/kasan/init.c: fix doc warning Subsystem: mm/hugetlb Mina Almasry <almasrymina@google.com>: mm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY Subsystem: lib YueHaibing <yuehaibing@huawei.com>: lib: crc64: fix kernel-doc warning Subsystem: ocfs2 Junxiao Bi <junxiao.bi@oracle.com>: ocfs2: fix data corruption by fallocate Subsystem: mailmap Michel Lespinasse <michel@lespinasse.org>: mailmap: use private address for Michel Lespinasse .mailmap | 3 + arch/mips/mm/cache.c | 30 ++++++++--------- drivers/base/memory.c | 6 +-- fs/ocfs2/file.c | 55 +++++++++++++++++++++++++++++--- include/linux/pgtable.h | 8 ++++ init/main.c | 2 - lib/crc64.c | 2 - mm/debug_vm_pgtable.c | 4 +- mm/hugetlb.c | 16 +++++++-- mm/kasan/init.c | 4 +- mm/kfence/core.c | 6 +-- mm/memory.c | 4 ++ mm/page_alloc.c | 2 + tools/testing/selftests/proc/.gitignore | 1 14 files changed, 107 insertions(+), 36 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-05-23 0:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-05-23 0:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 10 patches, based on 4ff2473bdb4cf2bb7d208ccf4418d3d7e6b1652c. Subsystems affected by this patch series: mm/pagealloc mm/gup ipc selftests mm/kasan kernel/watchdog bitmap procfs lib mm/userfaultfd Subsystem: mm/pagealloc Arnd Bergmann <arnd@arndb.de>: mm/shuffle: fix section mismatch warning Subsystem: mm/gup Michal Hocko <mhocko@suse.com>: Revert "mm/gup: check page posion status for coredump." Subsystem: ipc Varad Gautam <varad.gautam@suse.com>: ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry Subsystem: selftests Yang Yingliang <yangyingliang@huawei.com>: tools/testing/selftests/exec: fix link error Subsystem: mm/kasan Alexander Potapenko <glider@google.com>: kasan: slab: always reset the tag in get_freepointer_safe() Subsystem: kernel/watchdog Petr Mladek <pmladek@suse.com>: watchdog: reliable handling of timestamps Subsystem: bitmap Rikard Falkeborn <rikard.falkeborn@gmail.com>: linux/bits.h: fix compilation error with GENMASK Subsystem: procfs Alexey Dobriyan <adobriyan@gmail.com>: proc: remove Alexey from MAINTAINERS Subsystem: lib Zhen Lei <thunder.leizhen@huawei.com>: lib: kunit: suppress a compilation warning of frame size Subsystem: mm/userfaultfd Mike Kravetz <mike.kravetz@oracle.com>: userfaultfd: hugetlbfs: fix new flag usage in error path MAINTAINERS | 1 - fs/hugetlbfs/inode.c | 2 +- include/linux/bits.h | 2 +- include/linux/const.h | 8 ++++++++ include/linux/minmax.h | 10 ++-------- ipc/mqueue.c | 6 ++++-- ipc/msg.c | 6 ++++-- ipc/sem.c | 6 ++++-- kernel/watchdog.c | 34 ++++++++++++++++++++-------------- lib/Makefile | 1 + mm/gup.c | 4 ---- mm/internal.h | 20 -------------------- mm/shuffle.h | 4 ++-- mm/slub.c | 1 + mm/userfaultfd.c | 28 ++++++++++++++-------------- tools/include/linux/bits.h | 2 +- tools/include/linux/const.h | 8 ++++++++ tools/testing/selftests/exec/Makefile | 6 +++--- 18 files changed, 74 insertions(+), 75 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-05-15 0:26 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-05-15 0:26 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 13 patches, based on bd3c9cdb21a2674dd0db70199df884828e37abd4. Subsystems affected by this patch series: mm/hugetlb mm/slub resource squashfs mm/userfaultfd mm/ksm mm/pagealloc mm/kasan mm/pagemap hfsplus modprobe mm/ioremap Subsystem: mm/hugetlb Peter Xu <peterx@redhat.com>: Patch series "mm/hugetlb: Fix issues on file sealing and fork", v2: mm/hugetlb: fix F_SEAL_FUTURE_WRITE mm/hugetlb: fix cow where page writtable in child Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: mm, slub: move slub_debug static key enabling outside slab_mutex Subsystem: resource Alistair Popple <apopple@nvidia.com>: kernel/resource: fix return code check in __request_free_mem_region Subsystem: squashfs Phillip Lougher <phillip@squashfs.org.uk>: squashfs: fix divide error in calculate_skip() Subsystem: mm/userfaultfd Axel Rasmussen <axelrasmussen@google.com>: userfaultfd: release page in error path to avoid BUG_ON Subsystem: mm/ksm Hugh Dickins <hughd@google.com>: ksm: revert "use GET_KSM_PAGE_NOLOCK to get ksm page in remove_rmap_item_from_tree()" Subsystem: mm/pagealloc "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: fix struct page layout on 32-bit systems Subsystem: mm/kasan Peter Collingbourne <pcc@google.com>: kasan: fix unit tests with CONFIG_UBSAN_LOCAL_BOUNDS enabled Subsystem: mm/pagemap "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap: fix readahead return types Subsystem: hfsplus Jouni Roivas <jouni.roivas@tuxera.com>: hfsplus: prevent corruption in shrinking truncate Subsystem: modprobe Rasmus Villemoes <linux@rasmusvillemoes.dk>: docs: admin-guide: update description for kernel.modprobe sysctl Subsystem: mm/ioremap Christophe Leroy <christophe.leroy@csgroup.eu>: mm/ioremap: fix iomap_max_page_shift Documentation/admin-guide/sysctl/kernel.rst | 9 ++++--- fs/hfsplus/extents.c | 7 +++-- fs/hugetlbfs/inode.c | 5 ++++ fs/iomap/buffered-io.c | 4 +-- fs/squashfs/file.c | 6 ++-- include/linux/mm.h | 32 ++++++++++++++++++++++++++ include/linux/mm_types.h | 4 +-- include/linux/pagemap.h | 6 ++-- include/net/page_pool.h | 12 +++++++++ kernel/resource.c | 2 - lib/test_kasan.c | 29 ++++++++++++++++++----- mm/hugetlb.c | 1 mm/ioremap.c | 6 ++-- mm/ksm.c | 3 +- mm/shmem.c | 34 ++++++++++++---------------- mm/slab_common.c | 10 ++++++++ mm/slub.c | 9 ------- net/core/page_pool.c | 12 +++++---- 18 files changed, 129 insertions(+), 62 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-05-07 1:01 Andrew Morton 2021-05-07 7:12 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-05-07 1:01 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm This is everything else from -mm for this merge window, with the possible exception of Mike Rapoport's "secretmem" syscall patch series (https://lkml.kernel.org/r/20210303162209.8609-1-rppt@kernel.org). I've been wobbly about the secretmem patches due to doubts about whether the feature is sufficiently useful to justify inclusion, but developers are now weighing in with helpful information and I've asked Mike for an extensively updated [0/n] changelog. This will take a few days to play out so it is possible that I will prevail upon you for a post-rc1 merge. If that's a problem, there's always 5.13-rc1. 91 patches, based on 8ca5297e7e38f2dc8c753d33a5092e7be181fff0, plus previously sent patches. Thanks. Subsystems affected by this patch series: alpha procfs sysctl misc core-kernel bitmap lib compat checkpatch epoll isofs nilfs2 hpfs exit fork kexec gcov panic delayacct gdb resource selftests async initramfs ipc mm/cleanups drivers/char mm/slub spelling Subsystem: alpha Randy Dunlap <rdunlap@infradead.org>: alpha: eliminate old-style function definitions alpha: csum_partial_copy.c: add function prototypes from <net/checksum.h> Subsystem: procfs Colin Ian King <colin.king@canonical.com>: fs/proc/generic.c: fix incorrect pde_is_permanent check Alexey Dobriyan <adobriyan@gmail.com>: proc: save LOC in __xlate_proc_name() proc: mandate ->proc_lseek in "struct proc_ops" proc: delete redundant subset=pid check selftests: proc: test subset=pid Subsystem: sysctl zhouchuangao <zhouchuangao@vivo.com>: proc/sysctl: fix function name error in comments Subsystem: misc "Matthew Wilcox (Oracle)" <willy@infradead.org>: include: remove pagemap.h from blkdev.h Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: drop inclusion in bitmap.h Wan Jiabing <wanjiabing@vivo.com>: linux/profile.h: remove unnecessary declaration Subsystem: core-kernel Rasmus Villemoes <linux@rasmusvillemoes.dk>: kernel/async.c: fix pr_debug statement kernel/cred.c: make init_groups static Subsystem: bitmap Yury Norov <yury.norov@gmail.com>: Patch series "lib/find_bit: fast path for small bitmaps", v6: tools: disable -Wno-type-limits tools: bitmap: sync function declarations with the kernel tools: sync BITMAP_LAST_WORD_MASK() macro with the kernel arch: rearrange headers inclusion order in asm/bitops for m68k, sh and h8300 lib: extend the scope of small_const_nbits() macro tools: sync small_const_nbits() macro with the kernel lib: inline _find_next_bit() wrappers tools: sync find_next_bit implementation lib: add fast path for find_next_*_bit() lib: add fast path for find_first_*_bit() and find_last_bit() tools: sync lib/find_bit implementation MAINTAINERS: add entry for the bitmap API Subsystem: lib Bhaskar Chowdhury <unixbhaskar@gmail.com>: lib/bch.c: fix a typo in the file bch.c Wang Qing <wangqing@vivo.com>: lib: fix inconsistent indenting in process_bit1() ToastC <mrtoastcheng@gmail.com>: lib/list_sort.c: fix typo in function description Bhaskar Chowdhury <unixbhaskar@gmail.com>: lib/genalloc.c: Fix a typo Richard Fitzgerald <rf@opensource.cirrus.com>: lib: crc8: pointer to data block should be const Zqiang <qiang.zhang@windriver.com>: lib: stackdepot: turn depot_lock spinlock to raw_spinlock Alex Shi <alexs@kernel.org>: lib/percpu_counter: tame kernel-doc compile warning lib/genalloc: add parameter description to fix doc compile warning Randy Dunlap <rdunlap@infradead.org>: lib: parser: clean up kernel-doc Subsystem: compat Masahiro Yamada <masahiroy@kernel.org>: include/linux/compat.h: remove unneeded declaration from COMPAT_SYSCALL_DEFINEx() Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: warn when missing newline in return sysfs_emit() formats Vincent Mailhol <mailhol.vincent@wanadoo.fr>: checkpatch: exclude four preprocessor sub-expressions from MACRO_ARG_REUSE Christophe JAILLET <christophe.jaillet@wanadoo.fr>: checkpatch: improve ALLOC_ARRAY_ARGS test Subsystem: epoll Davidlohr Bueso <dave@stgolabs.net>: Patch series "fs/epoll: restore user-visible behavior upon event ready": kselftest: introduce new epoll test case fs/epoll: restore waking from ep_done_scan() Subsystem: isofs "Gustavo A. R. Silva" <gustavoars@kernel.org>: isofs: fix fall-through warnings for Clang Subsystem: nilfs2 Liu xuzhi <liu.xuzhi@zte.com.cn>: fs/nilfs2: fix misspellings using codespell tool Lu Jialin <lujialin4@huawei.com>: nilfs2: fix typos in comments Subsystem: hpfs "Gustavo A. R. Silva" <gustavoars@kernel.org>: hpfs: replace one-element array with flexible-array member Subsystem: exit Jim Newsome <jnewsome@torproject.org>: do_wait: make PIDTYPE_PID case O(1) instead of O(n) Subsystem: fork Rolf Eike Beer <eb@emlix.com>: kernel/fork.c: simplify copy_mm() Xiaofeng Cao <cxfcosmos@gmail.com>: kernel/fork.c: fix typos Subsystem: kexec Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>: kernel/crash_core: add crashkernel=auto for vmcore creation Joe LeVeque <jolevequ@microsoft.com>: kexec: Add kexec reboot string Jia-Ju Bai <baijiaju1990@gmail.com>: kernel: kexec_file: fix error return code of kexec_calculate_store_digests() Pavel Tatashin <pasha.tatashin@soleen.com>: kexec: dump kmessage before machine_kexec Subsystem: gcov Johannes Berg <johannes.berg@intel.com>: gcov: combine common code gcov: simplify buffer allocation gcov: use kvmalloc() Nick Desaulniers <ndesaulniers@google.com>: gcov: clang: drop support for clang-10 and older Subsystem: panic He Ying <heying24@huawei.com>: smp: kernel/panic.c - silence warnings Subsystem: delayacct Yafang Shao <laoar.shao@gmail.com>: delayacct: clear right task's flag after blkio completes Subsystem: gdb Johannes Berg <johannes.berg@intel.com>: gdb: lx-symbols: store the abspath() Barry Song <song.bao.hua@hisilicon.com>: Patch series "scripts/gdb: clarify the platforms supporting lx_current and add arm64 support", v2: scripts/gdb: document lx_current is only supported by x86 scripts/gdb: add lx_current support for arm64 Subsystem: resource David Hildenbrand <david@redhat.com>: Patch series "kernel/resource: make walk_system_ram_res() and walk_mem_res() search the whole tree", v2: kernel/resource: make walk_system_ram_res() find all busy IORESOURCE_SYSTEM_RAM resources kernel/resource: make walk_mem_res() find all busy IORESOURCE_MEM resources kernel/resource: remove first_lvl / siblings_only logic Alistair Popple <apopple@nvidia.com>: kernel/resource: allow region_intersects users to hold resource_lock kernel/resource: refactor __request_region to allow external locking kernel/resource: fix locking in request_free_mem_region Subsystem: selftests Zhang Yunkai <zhang.yunkai@zte.com.cn>: selftests: remove duplicate include Subsystem: async Rasmus Villemoes <linux@rasmusvillemoes.dk>: kernel/async.c: stop guarding pr_debug() statements kernel/async.c: remove async_unregister_domain() Subsystem: initramfs Rasmus Villemoes <linux@rasmusvillemoes.dk>: Patch series "background initramfs unpacking, and CONFIG_MODPROBE_PATH", v3: init/initramfs.c: do unpacking asynchronously modules: add CONFIG_MODPROBE_PATH Subsystem: ipc Bhaskar Chowdhury <unixbhaskar@gmail.com>: ipc/sem.c: mundane typo fixes Subsystem: mm/cleanups Shijie Luo <luoshijie1@huawei.com>: mm: fix some typos and code style problems Subsystem: drivers/char David Hildenbrand <david@redhat.com>: Patch series "drivers/char: remove /dev/kmem for good": drivers/char: remove /dev/kmem for good mm: remove xlate_dev_kmem_ptr() mm/vmalloc: remove vwrite() Subsystem: mm/slub Maninder Singh <maninder1.s@samsung.com>: arm: print alloc free paths for address in registers Subsystem: spelling Drew Fustini <drew@beagleboard.org>: scripts/spelling.txt: add "overlfow" zuoqilin <zuoqilin@yulong.com>: scripts/spelling.txt: Add "diabled" typo Drew Fustini <drew@beagleboard.org>: scripts/spelling.txt: add "overflw" Colin Ian King <colin.king@canonical.com>: mm/slab.c: fix spelling mistake "disired" -> "desired" Bhaskar Chowdhury <unixbhaskar@gmail.com>: include/linux/pgtable.h: few spelling fixes zhouchuangao <zhouchuangao@vivo.com>: kernel/umh.c: fix some spelling mistakes Xiaofeng Cao <cxfcosmos@gmail.com>: kernel/user_namespace.c: fix typos Bhaskar Chowdhury <unixbhaskar@gmail.com>: kernel/up.c: fix typo Xiaofeng Cao <caoxiaofeng@yulong.com>: kernel/sys.c: fix typo dingsenjie <dingsenjie@yulong.com>: fs: fat: fix spelling typo of values Bhaskar Chowdhury <unixbhaskar@gmail.com>: ipc/sem.c: spelling fix Masahiro Yamada <masahiroy@kernel.org>: treewide: remove editor modelines and cruft Ingo Molnar <mingo@kernel.org>: mm: fix typos in comments Lu Jialin <lujialin4@huawei.com>: mm: fix typos in comments Documentation/admin-guide/devices.txt | 2 Documentation/admin-guide/kdump/kdump.rst | 3 Documentation/admin-guide/kernel-parameters.txt | 18 Documentation/dev-tools/gdb-kernel-debugging.rst | 4 MAINTAINERS | 16 arch/Kconfig | 20 arch/alpha/include/asm/io.h | 5 arch/alpha/kernel/pc873xx.c | 4 arch/alpha/lib/csum_partial_copy.c | 1 arch/arm/configs/dove_defconfig | 1 arch/arm/configs/magician_defconfig | 1 arch/arm/configs/moxart_defconfig | 1 arch/arm/configs/mps2_defconfig | 1 arch/arm/configs/mvebu_v5_defconfig | 1 arch/arm/configs/xcep_defconfig | 1 arch/arm/include/asm/bug.h | 1 arch/arm/include/asm/io.h | 5 arch/arm/kernel/process.c | 11 arch/arm/kernel/traps.c | 1 arch/h8300/include/asm/bitops.h | 8 arch/hexagon/configs/comet_defconfig | 1 arch/hexagon/include/asm/io.h | 1 arch/ia64/include/asm/io.h | 1 arch/ia64/include/asm/uaccess.h | 18 arch/m68k/atari/time.c | 7 arch/m68k/configs/amcore_defconfig | 1 arch/m68k/include/asm/bitops.h | 6 arch/m68k/include/asm/io_mm.h | 5 arch/mips/include/asm/io.h | 5 arch/openrisc/configs/or1ksim_defconfig | 1 arch/parisc/include/asm/io.h | 5 arch/parisc/include/asm/pdc_chassis.h | 1 arch/powerpc/include/asm/io.h | 5 arch/s390/include/asm/io.h | 5 arch/sh/configs/edosk7705_defconfig | 1 arch/sh/configs/se7206_defconfig | 1 arch/sh/configs/sh2007_defconfig | 1 arch/sh/configs/sh7724_generic_defconfig | 1 arch/sh/configs/sh7770_generic_defconfig | 1 arch/sh/configs/sh7785lcr_32bit_defconfig | 1 arch/sh/include/asm/bitops.h | 5 arch/sh/include/asm/io.h | 5 arch/sparc/configs/sparc64_defconfig | 1 arch/sparc/include/asm/io_64.h | 5 arch/um/drivers/cow.h | 7 arch/xtensa/configs/xip_kc705_defconfig | 1 block/blk-settings.c | 1 drivers/auxdisplay/panel.c | 7 drivers/base/firmware_loader/main.c | 2 drivers/block/brd.c | 1 drivers/block/loop.c | 1 drivers/char/Kconfig | 10 drivers/char/mem.c | 231 -------- drivers/gpu/drm/qxl/qxl_drv.c | 1 drivers/isdn/capi/kcapi_proc.c | 1 drivers/md/bcache/super.c | 1 drivers/media/usb/pwc/pwc-uncompress.c | 3 drivers/net/ethernet/adaptec/starfire.c | 8 drivers/net/ethernet/amd/atarilance.c | 8 drivers/net/ethernet/amd/pcnet32.c | 7 drivers/net/wireless/intersil/hostap/hostap_proc.c | 1 drivers/net/wireless/intersil/orinoco/orinoco_nortel.c | 8 drivers/net/wireless/intersil/orinoco/orinoco_pci.c | 8 drivers/net/wireless/intersil/orinoco/orinoco_plx.c | 8 drivers/net/wireless/intersil/orinoco/orinoco_tmd.c | 8 drivers/nvdimm/btt.c | 1 drivers/nvdimm/pmem.c | 1 drivers/parport/parport_ip32.c | 12 drivers/platform/x86/dell/dell_rbu.c | 3 drivers/scsi/53c700.c | 1 drivers/scsi/53c700.h | 1 drivers/scsi/ch.c | 6 drivers/scsi/esas2r/esas2r_main.c | 1 drivers/scsi/ips.c | 20 drivers/scsi/ips.h | 20 drivers/scsi/lasi700.c | 1 drivers/scsi/megaraid/mbox_defs.h | 2 drivers/scsi/megaraid/mega_common.h | 2 drivers/scsi/megaraid/megaraid_mbox.c | 2 drivers/scsi/megaraid/megaraid_mbox.h | 2 drivers/scsi/qla1280.c | 12 drivers/scsi/scsicam.c | 1 drivers/scsi/sni_53c710.c | 1 drivers/video/fbdev/matrox/matroxfb_base.c | 9 drivers/video/fbdev/vga16fb.c | 10 fs/configfs/configfs_internal.h | 4 fs/configfs/dir.c | 4 fs/configfs/file.c | 4 fs/configfs/inode.c | 4 fs/configfs/item.c | 4 fs/configfs/mount.c | 4 fs/configfs/symlink.c | 4 fs/eventpoll.c | 6 fs/fat/fatent.c | 2 fs/hpfs/hpfs.h | 3 fs/isofs/rock.c | 1 fs/nfs/dir.c | 7 fs/nfs/nfs4proc.c | 6 fs/nfs/nfs4renewd.c | 6 fs/nfs/nfs4state.c | 6 fs/nfs/nfs4xdr.c | 6 fs/nfsd/nfs4proc.c | 6 fs/nfsd/nfs4xdr.c | 6 fs/nfsd/xdr4.h | 6 fs/nilfs2/cpfile.c | 2 fs/nilfs2/ioctl.c | 4 fs/nilfs2/segment.c | 4 fs/nilfs2/the_nilfs.c | 2 fs/ocfs2/acl.c | 4 fs/ocfs2/acl.h | 4 fs/ocfs2/alloc.c | 4 fs/ocfs2/alloc.h | 4 fs/ocfs2/aops.c | 4 fs/ocfs2/aops.h | 4 fs/ocfs2/blockcheck.c | 4 fs/ocfs2/blockcheck.h | 4 fs/ocfs2/buffer_head_io.c | 4 fs/ocfs2/buffer_head_io.h | 4 fs/ocfs2/cluster/heartbeat.c | 4 fs/ocfs2/cluster/heartbeat.h | 4 fs/ocfs2/cluster/masklog.c | 4 fs/ocfs2/cluster/masklog.h | 4 fs/ocfs2/cluster/netdebug.c | 4 fs/ocfs2/cluster/nodemanager.c | 4 fs/ocfs2/cluster/nodemanager.h | 4 fs/ocfs2/cluster/ocfs2_heartbeat.h | 4 fs/ocfs2/cluster/ocfs2_nodemanager.h | 4 fs/ocfs2/cluster/quorum.c | 4 fs/ocfs2/cluster/quorum.h | 4 fs/ocfs2/cluster/sys.c | 4 fs/ocfs2/cluster/sys.h | 4 fs/ocfs2/cluster/tcp.c | 4 fs/ocfs2/cluster/tcp.h | 4 fs/ocfs2/cluster/tcp_internal.h | 4 fs/ocfs2/dcache.c | 4 fs/ocfs2/dcache.h | 4 fs/ocfs2/dir.c | 4 fs/ocfs2/dir.h | 4 fs/ocfs2/dlm/dlmapi.h | 4 fs/ocfs2/dlm/dlmast.c | 4 fs/ocfs2/dlm/dlmcommon.h | 4 fs/ocfs2/dlm/dlmconvert.c | 4 fs/ocfs2/dlm/dlmconvert.h | 4 fs/ocfs2/dlm/dlmdebug.c | 4 fs/ocfs2/dlm/dlmdebug.h | 4 fs/ocfs2/dlm/dlmdomain.c | 4 fs/ocfs2/dlm/dlmdomain.h | 4 fs/ocfs2/dlm/dlmlock.c | 4 fs/ocfs2/dlm/dlmmaster.c | 4 fs/ocfs2/dlm/dlmrecovery.c | 4 fs/ocfs2/dlm/dlmthread.c | 4 fs/ocfs2/dlm/dlmunlock.c | 4 fs/ocfs2/dlmfs/dlmfs.c | 4 fs/ocfs2/dlmfs/userdlm.c | 4 fs/ocfs2/dlmfs/userdlm.h | 4 fs/ocfs2/dlmglue.c | 4 fs/ocfs2/dlmglue.h | 4 fs/ocfs2/export.c | 4 fs/ocfs2/export.h | 4 fs/ocfs2/extent_map.c | 4 fs/ocfs2/extent_map.h | 4 fs/ocfs2/file.c | 4 fs/ocfs2/file.h | 4 fs/ocfs2/filecheck.c | 4 fs/ocfs2/filecheck.h | 4 fs/ocfs2/heartbeat.c | 4 fs/ocfs2/heartbeat.h | 4 fs/ocfs2/inode.c | 4 fs/ocfs2/inode.h | 4 fs/ocfs2/journal.c | 4 fs/ocfs2/journal.h | 4 fs/ocfs2/localalloc.c | 4 fs/ocfs2/localalloc.h | 4 fs/ocfs2/locks.c | 4 fs/ocfs2/locks.h | 4 fs/ocfs2/mmap.c | 4 fs/ocfs2/move_extents.c | 4 fs/ocfs2/move_extents.h | 4 fs/ocfs2/namei.c | 4 fs/ocfs2/namei.h | 4 fs/ocfs2/ocfs1_fs_compat.h | 4 fs/ocfs2/ocfs2.h | 4 fs/ocfs2/ocfs2_fs.h | 4 fs/ocfs2/ocfs2_ioctl.h | 4 fs/ocfs2/ocfs2_lockid.h | 4 fs/ocfs2/ocfs2_lockingver.h | 4 fs/ocfs2/refcounttree.c | 4 fs/ocfs2/refcounttree.h | 4 fs/ocfs2/reservations.c | 4 fs/ocfs2/reservations.h | 4 fs/ocfs2/resize.c | 4 fs/ocfs2/resize.h | 4 fs/ocfs2/slot_map.c | 4 fs/ocfs2/slot_map.h | 4 fs/ocfs2/stack_o2cb.c | 4 fs/ocfs2/stack_user.c | 4 fs/ocfs2/stackglue.c | 4 fs/ocfs2/stackglue.h | 4 fs/ocfs2/suballoc.c | 4 fs/ocfs2/suballoc.h | 4 fs/ocfs2/super.c | 4 fs/ocfs2/super.h | 4 fs/ocfs2/symlink.c | 4 fs/ocfs2/symlink.h | 4 fs/ocfs2/sysfile.c | 4 fs/ocfs2/sysfile.h | 4 fs/ocfs2/uptodate.c | 4 fs/ocfs2/uptodate.h | 4 fs/ocfs2/xattr.c | 4 fs/ocfs2/xattr.h | 4 fs/proc/generic.c | 13 fs/proc/inode.c | 18 fs/proc/proc_sysctl.c | 2 fs/reiserfs/procfs.c | 10 include/asm-generic/bitops/find.h | 108 +++ include/asm-generic/bitops/le.h | 38 + include/asm-generic/bitsperlong.h | 12 include/asm-generic/io.h | 11 include/linux/align.h | 15 include/linux/async.h | 1 include/linux/bitmap.h | 11 include/linux/bitops.h | 12 include/linux/blkdev.h | 1 include/linux/compat.h | 1 include/linux/configfs.h | 4 include/linux/crc8.h | 2 include/linux/cred.h | 1 include/linux/delayacct.h | 20 include/linux/fs.h | 2 include/linux/genl_magic_func.h | 1 include/linux/genl_magic_struct.h | 1 include/linux/gfp.h | 2 include/linux/init_task.h | 1 include/linux/initrd.h | 2 include/linux/kernel.h | 9 include/linux/mm.h | 2 include/linux/mmzone.h | 2 include/linux/pgtable.h | 10 include/linux/proc_fs.h | 1 include/linux/profile.h | 3 include/linux/smp.h | 8 include/linux/swap.h | 1 include/linux/vmalloc.h | 7 include/uapi/linux/if_bonding.h | 11 include/uapi/linux/nfs4.h | 6 include/xen/interface/elfnote.h | 10 include/xen/interface/hvm/hvm_vcpu.h | 10 include/xen/interface/io/xenbus.h | 10 init/Kconfig | 12 init/initramfs.c | 38 + init/main.c | 1 ipc/sem.c | 12 kernel/async.c | 68 -- kernel/configs/android-base.config | 1 kernel/crash_core.c | 7 kernel/cred.c | 2 kernel/exit.c | 67 ++ kernel/fork.c | 23 kernel/gcov/Kconfig | 1 kernel/gcov/base.c | 49 + kernel/gcov/clang.c | 282 ---------- kernel/gcov/fs.c | 146 ++++- kernel/gcov/gcc_4_7.c | 173 ------ kernel/gcov/gcov.h | 14 kernel/kexec_core.c | 4 kernel/kexec_file.c | 4 kernel/kmod.c | 2 kernel/resource.c | 198 ++++--- kernel/sys.c | 14 kernel/umh.c | 8 kernel/up.c | 2 kernel/user_namespace.c | 6 lib/bch.c | 2 lib/crc8.c | 2 lib/decompress_unlzma.c | 2 lib/find_bit.c | 68 -- lib/genalloc.c | 7 lib/list_sort.c | 2 lib/parser.c | 61 +- lib/percpu_counter.c | 2 lib/stackdepot.c | 6 mm/balloon_compaction.c | 4 mm/compaction.c | 4 mm/filemap.c | 2 mm/gup.c | 2 mm/highmem.c | 2 mm/huge_memory.c | 6 mm/hugetlb.c | 6 mm/internal.h | 2 mm/kasan/kasan.h | 8 mm/kasan/quarantine.c | 4 mm/kasan/shadow.c | 4 mm/kfence/report.c | 2 mm/khugepaged.c | 2 mm/ksm.c | 6 mm/madvise.c | 4 mm/memcontrol.c | 18 mm/memory-failure.c | 2 mm/memory.c | 18 mm/mempolicy.c | 6 mm/migrate.c | 8 mm/mmap.c | 4 mm/mprotect.c | 2 mm/mremap.c | 2 mm/nommu.c | 10 mm/oom_kill.c | 2 mm/page-writeback.c | 4 mm/page_alloc.c | 16 mm/page_owner.c | 2 mm/page_vma_mapped.c | 2 mm/percpu-internal.h | 2 mm/percpu.c | 2 mm/pgalloc-track.h | 6 mm/rmap.c | 2 mm/slab.c | 8 mm/slub.c | 2 mm/swap.c | 4 mm/swap_slots.c | 2 mm/swap_state.c | 2 mm/vmalloc.c | 124 ---- mm/vmstat.c | 2 mm/z3fold.c | 2 mm/zpool.c | 2 mm/zsmalloc.c | 6 samples/configfs/configfs_sample.c | 2 scripts/checkpatch.pl | 15 scripts/gdb/linux/cpus.py | 23 scripts/gdb/linux/symbols.py | 3 scripts/spelling.txt | 3 tools/include/asm-generic/bitops/find.h | 85 ++- tools/include/asm-generic/bitsperlong.h | 3 tools/include/linux/bitmap.h | 18 tools/lib/bitmap.c | 4 tools/lib/find_bit.c | 56 - tools/scripts/Makefile.include | 1 tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 44 + tools/testing/selftests/kvm/lib/sparsebit.c | 1 tools/testing/selftests/mincore/mincore_selftest.c | 1 tools/testing/selftests/powerpc/mm/tlbie_test.c | 1 tools/testing/selftests/proc/Makefile | 1 tools/testing/selftests/proc/proc-subset-pid.c | 121 ++++ tools/testing/selftests/proc/read.c | 4 tools/usb/hcd-tests.sh | 2 343 files changed, 1383 insertions(+), 2119 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-07 1:01 incoming Andrew Morton @ 2021-05-07 7:12 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-05-07 7:12 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Thu, May 6, 2021 at 6:01 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > I've been wobbly about the secretmem patches due to doubts about > whether the feature is sufficiently useful to justify inclusion, but > developers are now weighing in with helpful information and I've asked Mike > for an extensively updated [0/n] changelog. This will take a few days > to play out so it is possible that I will prevail upon you for a post-rc1 > merge. Oh, much too late for this release by now. > If that's a problem, there's always 5.13-rc1. 5.13-rc1 is two days from now, it would be for 5.14-rc1.. How time - and version numbers - fly. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-05-05 1:32 Andrew Morton 2021-05-05 1:47 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-05-05 1:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits The remainder of the main mm/ queue. 143 patches, based on 8ca5297e7e38f2dc8c753d33a5092e7be181fff0, plus previously sent patches. Subsystems affected by this patch series: mm/pagecache mm/hugetlb mm/userfaultfd mm/vmscan mm/compaction mm/migration mm/cma mm/ksm mm/vmstat mm/mmap mm/kconfig mm/util mm/memory-hotplug mm/zswap mm/zsmalloc mm/highmem mm/cleanups mm/kfence Subsystem: mm/pagecache "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Remove nrexceptional tracking", v2: mm: introduce and use mapping_empty() mm: stop accounting shadow entries dax: account DAX entries as nrpages mm: remove nrexceptional from inode Hugh Dickins <hughd@google.com>: mm: remove nrexceptional from inode: remove BUG_ON Subsystem: mm/hugetlb Peter Xu <peterx@redhat.com>: Patch series "hugetlb: Disable huge pmd unshare for uffd-wp", v4: hugetlb: pass vma into huge_pte_alloc() and huge_pmd_share() hugetlb/userfaultfd: forbid huge pmd sharing when uffd enabled mm/hugetlb: move flush_hugetlb_tlb_range() into hugetlb.h hugetlb/userfaultfd: unshare all pmds for hugetlbfs when register wp Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: remove redundant reservation check condition in alloc_huge_page() Anshuman Khandual <anshuman.khandual@arm.com>: mm: generalize HUGETLB_PAGE_SIZE_VARIABLE Miaohe Lin <linmiaohe@huawei.com>: Patch series "Some cleanups for hugetlb": mm/hugetlb: use some helper functions to cleanup code mm/hugetlb: optimize the surplus state transfer code in move_hugetlb_state() mm/hugetlb_cgroup: remove unnecessary VM_BUG_ON_PAGE in hugetlb_cgroup_migrate() mm/hugetlb: simplify the code when alloc_huge_page() failed in hugetlb_no_page() mm/hugetlb: avoid calculating fault_mutex_hash in truncate_op case Patch series "Cleanup and fixup for khugepaged", v2: khugepaged: remove unneeded return value of khugepaged_collapse_pte_mapped_thps() khugepaged: reuse the smp_wmb() inside __SetPageUptodate() khugepaged: use helper khugepaged_test_exit() in __khugepaged_enter() khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate() mm/huge_memory.c: remove unnecessary local variable ret2 Patch series "Some cleanups for huge_memory", v3: mm/huge_memory.c: rework the function vma_adjust_trans_huge() mm/huge_memory.c: make get_huge_zero_page() return bool mm/huge_memory.c: rework the function do_huge_pmd_numa_page() slightly mm/huge_memory.c: remove redundant PageCompound() check mm/huge_memory.c: remove unused macro TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG mm/huge_memory.c: use helper function migration_entry_to_page() Yanfei Xu <yanfei.xu@windriver.com>: mm/khugepaged.c: replace barrier() with READ_ONCE() for a selective variable Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup for khugepaged": khugepaged: use helper function range_in_vma() in collapse_pte_mapped_thp() khugepaged: remove unnecessary out label in collapse_huge_page() khugepaged: remove meaningless !pte_present() check in khugepaged_scan_pmd() Zi Yan <ziy@nvidia.com>: mm: huge_memory: a new debugfs interface for splitting THP tests mm: huge_memory: debugfs for file-backed THP split Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for hugetlb", v2: mm/hugeltb: remove redundant VM_BUG_ON() in region_add() mm/hugeltb: simplify the return code of __vma_reservation_common() mm/hugeltb: clarify (chg - freed) won't go negative in hugetlb_unreserve_pages() mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts() mm/hugetlb: remove unused variable pseudo_vma in remove_inode_hugepages() Mike Kravetz <mike.kravetz@oracle.com>: Patch series "make hugetlb put_page safe for all calling contexts", v5: mm/cma: change cma mutex to irq safe spinlock hugetlb: no need to drop hugetlb_lock to call cma_release hugetlb: add per-hstate mutex to synchronize user adjustments hugetlb: create remove_hugetlb_page() to separate functionality hugetlb: call update_and_free_page without hugetlb_lock hugetlb: change free_pool_huge_page to remove_pool_huge_page hugetlb: make free_huge_page irq safe hugetlb: add lockdep_assert_held() calls for hugetlb_lock Oscar Salvador <osalvador@suse.de>: Patch series "Make alloc_contig_range handle Hugetlb pages", v10: mm,page_alloc: bail out earlier on -ENOMEM in alloc_contig_migrate_range mm,compaction: let isolate_migratepages_{range,block} return error codes mm,hugetlb: drop clearing of flag from prep_new_huge_page mm,hugetlb: split prep_new_huge_page functionality mm: make alloc_contig_range handle free hugetlb pages mm: make alloc_contig_range handle in-use hugetlb pages mm,page_alloc: drop unnecessary checks from pfn_range_valid_contig Subsystem: mm/userfaultfd Axel Rasmussen <axelrasmussen@google.com>: Patch series "userfaultfd: add minor fault handling", v9: userfaultfd: add minor fault registration mode userfaultfd: disable huge PMD sharing for MINOR registered VMAs userfaultfd: hugetlbfs: only compile UFFD helpers if config enabled userfaultfd: add UFFDIO_CONTINUE ioctl userfaultfd: update documentation to describe minor fault handling userfaultfd/selftests: add test exercising minor fault handling Subsystem: mm/vmscan Dave Hansen <dave.hansen@linux.intel.com>: mm/vmscan: move RECLAIM* bits to uapi header mm/vmscan: replace implicit RECLAIM_ZONE checks with explicit checks Yang Shi <shy828301@gmail.com>: Patch series "Make shrinker's nr_deferred memcg aware", v10: mm: vmscan: use nid from shrink_control for tracepoint mm: vmscan: consolidate shrinker_maps handling code mm: vmscan: use shrinker_rwsem to protect shrinker_maps allocation mm: vmscan: remove memcg_shrinker_map_size mm: vmscan: use kvfree_rcu instead of call_rcu mm: memcontrol: rename shrinker_map to shrinker_info mm: vmscan: add shrinker_info_protected() helper mm: vmscan: use a new flag to indicate shrinker is registered mm: vmscan: add per memcg shrinker nr_deferred mm: vmscan: use per memcg nr_deferred of shrinker mm: vmscan: don't need allocate shrinker->nr_deferred for memcg aware shrinkers mm: memcontrol: reparent nr_deferred when memcg offline mm: vmscan: shrink deferred objects proportional to priority Subsystem: mm/compaction Pintu Kumar <pintu@codeaurora.org>: mm/compaction: remove unused variable sysctl_compact_memory Charan Teja Reddy <charante@codeaurora.org>: mm: compaction: update the COMPACT[STALL|FAIL] events properly Subsystem: mm/migration Minchan Kim <minchan@kernel.org>: mm: disable LRU pagevec during the migration temporarily mm: replace migrate_[prep|finish] with lru_cache_[disable|enable] mm: fs: invalidate BH LRU during page migration Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for mm/migrate.c", v3: mm/migrate.c: make putback_movable_page() static mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case mm/migrate.c: fix potential indeterminate pte entry in migrate_vma_insert_page() mm/migrate.c: use helper migrate_vma_collect_skip() in migrate_vma_collect_hole() Revert "mm: migrate: skip shared exec THP for NUMA balancing" Subsystem: mm/cma Minchan Kim <minchan@kernel.org>: mm: vmstat: add cma statistics Baolin Wang <baolin.wang@linux.alibaba.com>: mm: cma: use pr_err_ratelimited for CMA warning Liam Mark <lmark@codeaurora.org>: mm: cma: add trace events for CMA alloc perf testing Minchan Kim <minchan@kernel.org>: mm: cma: support sysfs mm: cma: add the CMA instance name to cma trace events mm: use proper type for cma_[alloc|release] Subsystem: mm/ksm Miaohe Lin <linmiaohe@huawei.com>: Patch series "Cleanup and fixup for ksm": ksm: remove redundant VM_BUG_ON_PAGE() on stable_tree_search() ksm: use GET_KSM_PAGE_NOLOCK to get ksm page in remove_rmap_item_from_tree() ksm: remove dedicated macro KSM_FLAG_MASK ksm: fix potential missing rmap_item for stable_node Chengyang Fan <cy.fan@huawei.com>: mm/ksm: remove unused parameter from remove_trailing_rmap_items() Subsystem: mm/vmstat Hugh Dickins <hughd@google.com>: mm: restore node stat checking in /proc/sys/vm/stat_refresh mm: no more EINVAL from /proc/sys/vm/stat_refresh mm: /proc/sys/vm/stat_refresh skip checking known negative stats mm: /proc/sys/vm/stat_refresh stop checking monotonic numa stats Saravanan D <saravanand@fb.com>: x86/mm: track linear mapping split events Subsystem: mm/mmap Liam Howlett <liam.howlett@oracle.com>: mm/mmap.c: don't unlock VMAs in remap_file_pages() Subsystem: mm/kconfig Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm: some config cleanups", v2: mm: generalize ARCH_HAS_CACHE_LINE_SIZE mm: generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS) mm: generalize ARCH_ENABLE_MEMORY_[HOTPLUG|HOTREMOVE] mm: drop redundant ARCH_ENABLE_[HUGEPAGE|THP]_MIGRATION mm: drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK mm: drop redundant HAVE_ARCH_TRANSPARENT_HUGEPAGE Subsystem: mm/util Joe Perches <joe@perches.com>: mm/util.c: reduce mem_dump_obj() object size Bhaskar Chowdhury <unixbhaskar@gmail.com>: mm/util.c: fix typo Subsystem: mm/memory-hotplug Pavel Tatashin <pasha.tatashin@soleen.com>: Patch series "prohibit pinning pages in ZONE_MOVABLE", v11: mm/gup: don't pin migrated cma pages in movable zone mm/gup: check every subpage of a compound page during isolation mm/gup: return an error on migration failure mm/gup: check for isolation errors mm cma: rename PF_MEMALLOC_NOCMA to PF_MEMALLOC_PIN mm: apply per-task gfp constraints in fast path mm: honor PF_MEMALLOC_PIN for all movable pages mm/gup: do not migrate zero page mm/gup: migrate pinned pages out of movable zone memory-hotplug.rst: add a note about ZONE_MOVABLE and page pinning mm/gup: change index type to long as it counts pages mm/gup: longterm pin migration cleanup selftests/vm: gup_test: fix test flag selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages Mel Gorman <mgorman@techsingularity.net>: mm/memory_hotplug: remove broken locking of zone PCP structures during hot remove Oscar Salvador <osalvador@suse.de>: Patch series "Allocate memmap from hotadded memory (per device)", v10: drivers/base/memory: introduce memory_block_{online,offline} mm,memory_hotplug: relax fully spanned sections check David Hildenbrand <david@redhat.com>: mm,memory_hotplug: factor out adjusting present pages into adjust_present_page_count() Oscar Salvador <osalvador@suse.de>: mm,memory_hotplug: allocate memmap from the added memory range acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported mm,memory_hotplug: add kernel boot option to enable memmap_on_memory x86/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE arm64/Kconfig: introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE Subsystem: mm/zswap Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/zswap.c: switch from strlcpy to strscpy Subsystem: mm/zsmalloc zhouchuangao <zhouchuangao@vivo.com>: mm/zsmalloc: use BUG_ON instead of if condition followed by BUG. Subsystem: mm/highmem Ira Weiny <ira.weiny@intel.com>: Patch series "btrfs: Convert kmap/memset/kunmap to memzero_user()": iov_iter: lift memzero_page() to highmem.h btrfs: use memzero_page() instead of open coded kmap pattern songqiang <songqiang@uniontech.com>: mm/highmem.c: fix coding style issue Subsystem: mm/cleanups Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/mempool: minor coding style tweaks Zhang Yunkai <zhang.yunkai@zte.com.cn>: mm/process_vm_access.c: remove duplicate include Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: zero guard page after out-of-bounds access Patch series "kfence: optimize timer scheduling", v2: kfence: await for allocation using wait_event kfence: maximize allocation wait timeout duration kfence: use power-efficient work queue to run delayed work Documentation/ABI/testing/sysfs-kernel-mm-cma | 25 Documentation/admin-guide/kernel-parameters.txt | 17 Documentation/admin-guide/mm/memory-hotplug.rst | 9 Documentation/admin-guide/mm/userfaultfd.rst | 105 +- arch/arc/Kconfig | 9 arch/arm/Kconfig | 10 arch/arm64/Kconfig | 34 arch/arm64/mm/hugetlbpage.c | 7 arch/ia64/Kconfig | 14 arch/ia64/mm/hugetlbpage.c | 3 arch/mips/Kconfig | 6 arch/mips/mm/hugetlbpage.c | 4 arch/parisc/Kconfig | 5 arch/parisc/mm/hugetlbpage.c | 2 arch/powerpc/Kconfig | 17 arch/powerpc/mm/hugetlbpage.c | 3 arch/powerpc/platforms/Kconfig.cputype | 16 arch/riscv/Kconfig | 5 arch/s390/Kconfig | 12 arch/s390/mm/hugetlbpage.c | 2 arch/sh/Kconfig | 7 arch/sh/mm/Kconfig | 8 arch/sh/mm/hugetlbpage.c | 2 arch/sparc/mm/hugetlbpage.c | 2 arch/x86/Kconfig | 33 arch/x86/mm/pat/set_memory.c | 8 drivers/acpi/acpi_memhotplug.c | 5 drivers/base/memory.c | 105 ++ fs/Kconfig | 5 fs/block_dev.c | 2 fs/btrfs/compression.c | 5 fs/btrfs/extent_io.c | 22 fs/btrfs/inode.c | 33 fs/btrfs/reflink.c | 6 fs/btrfs/zlib.c | 5 fs/btrfs/zstd.c | 5 fs/buffer.c | 36 fs/dax.c | 8 fs/gfs2/glock.c | 3 fs/hugetlbfs/inode.c | 9 fs/inode.c | 11 fs/proc/task_mmu.c | 3 fs/userfaultfd.c | 149 +++ include/linux/buffer_head.h | 4 include/linux/cma.h | 4 include/linux/compaction.h | 1 include/linux/fs.h | 2 include/linux/gfp.h | 2 include/linux/highmem.h | 7 include/linux/huge_mm.h | 3 include/linux/hugetlb.h | 37 include/linux/memcontrol.h | 27 include/linux/memory.h | 8 include/linux/memory_hotplug.h | 15 include/linux/memremap.h | 2 include/linux/migrate.h | 11 include/linux/mm.h | 28 include/linux/mmzone.h | 20 include/linux/pagemap.h | 5 include/linux/pgtable.h | 12 include/linux/sched.h | 2 include/linux/sched/mm.h | 27 include/linux/shrinker.h | 7 include/linux/swap.h | 21 include/linux/userfaultfd_k.h | 55 + include/linux/vm_event_item.h | 8 include/trace/events/cma.h | 92 +- include/trace/events/migrate.h | 25 include/trace/events/mmflags.h | 7 include/uapi/linux/mempolicy.h | 7 include/uapi/linux/userfaultfd.h | 36 init/Kconfig | 5 kernel/sysctl.c | 2 lib/Kconfig.kfence | 1 lib/iov_iter.c | 8 mm/Kconfig | 28 mm/Makefile | 6 mm/cma.c | 70 + mm/cma.h | 25 mm/cma_debug.c | 8 mm/cma_sysfs.c | 112 ++ mm/compaction.c | 113 ++ mm/filemap.c | 24 mm/frontswap.c | 12 mm/gup.c | 264 +++--- mm/gup_test.c | 29 mm/gup_test.h | 3 mm/highmem.c | 11 mm/huge_memory.c | 326 +++++++- mm/hugetlb.c | 843 ++++++++++++++-------- mm/hugetlb_cgroup.c | 9 mm/internal.h | 10 mm/kfence/core.c | 61 + mm/khugepaged.c | 63 - mm/ksm.c | 17 mm/list_lru.c | 6 mm/memcontrol.c | 137 --- mm/memory_hotplug.c | 220 +++++ mm/mempolicy.c | 16 mm/mempool.c | 2 mm/migrate.c | 103 -- mm/mlock.c | 4 mm/mmap.c | 18 mm/oom_kill.c | 2 mm/page_alloc.c | 83 +- mm/process_vm_access.c | 1 mm/shmem.c | 2 mm/sparse.c | 4 mm/swap.c | 69 + mm/swap_state.c | 4 mm/swapfile.c | 4 mm/truncate.c | 19 mm/userfaultfd.c | 39 - mm/util.c | 26 mm/vmalloc.c | 2 mm/vmscan.c | 543 +++++++++----- mm/vmstat.c | 45 - mm/workingset.c | 1 mm/zsmalloc.c | 6 mm/zswap.c | 2 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 1 tools/testing/selftests/vm/gup_test.c | 38 tools/testing/selftests/vm/split_huge_page_test.c | 400 ++++++++++ tools/testing/selftests/vm/userfaultfd.c | 164 ++++ 125 files changed, 3596 insertions(+), 1668 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-05 1:32 incoming Andrew Morton @ 2021-05-05 1:47 ` Linus Torvalds 2021-05-05 3:16 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2021-05-05 1:47 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, May 4, 2021 at 6:32 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 143 patches Hmm. Only 140 seem to have made it to the list, with 103, 106 and 107 missing. Maybe just some mail delay? But at least right now https://lore.kernel.org/mm-commits/ doesn't show them (and thus 'b4' doesn't work). I'll check again later. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-05 1:47 ` incoming Linus Torvalds @ 2021-05-05 3:16 ` Andrew Morton 2021-05-05 17:10 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-05-05 3:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: Linux-MM, mm-commits On Tue, 4 May 2021 18:47:19 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, May 4, 2021 at 6:32 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > 143 patches > > Hmm. Only 140 seem to have made it to the list, with 103, 106 and 107 missing. > > Maybe just some mail delay? But at least right now > > https://lore.kernel.org/mm-commits/ > > doesn't show them (and thus 'b4' doesn't work). > > I'll check again later. > Well that's strange. I see all three via cc:me, but not on linux-mm or mm-commits. Let me resend right now with the same in-reply-to. Hopefully they will land in the correct place. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-05 3:16 ` incoming Andrew Morton @ 2021-05-05 17:10 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-05-05 17:10 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits On Tue, May 4, 2021 at 8:16 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > Let me resend right now with the same in-reply-to. Hopefully they will > land in the correct place. Well, you re-sent it twice, and I have three copies in my own mailbox, bot they still don't show up on the mm-commits mailing list. So the list hates them for some odd reason. I've picked them up locally, but adding Konstantin to the participants to see if he can see what's up. Konstantin: patches 103/106/107 are missing on lore out of Andrew's series of 143. Odd. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2021-05-05 17:10 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-05-05 17:10 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits On Tue, May 4, 2021 at 8:16 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > Let me resend right now with the same in-reply-to. Hopefully they will > land in the correct place. Well, you re-sent it twice, and I have three copies in my own mailbox, bot they still don't show up on the mm-commits mailing list. So the list hates them for some odd reason. I've picked them up locally, but adding Konstantin to the participants to see if he can see what's up. Konstantin: patches 103/106/107 are missing on lore out of Andrew's series of 143. Odd. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-05 17:10 ` incoming Linus Torvalds (?) @ 2021-05-05 17:44 ` Andrew Morton 2021-05-06 3:19 ` incoming Anshuman Khandual -1 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-05-05 17:44 UTC (permalink / raw) To: Linus Torvalds; +Cc: Konstantin Ryabitsev, Linux-MM, mm-commits [-- Attachment #1: Type: text/plain, Size: 1387 bytes --] On Wed, 5 May 2021 10:10:33 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, May 4, 2021 at 8:16 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > Let me resend right now with the same in-reply-to. Hopefully they will > > land in the correct place. > > Well, you re-sent it twice, and I have three copies in my own mailbox, > bot they still don't show up on the mm-commits mailing list. > > So the list hates them for some odd reason. > > I've picked them up locally, but adding Konstantin to the participants > to see if he can see what's up. > > Konstantin: patches 103/106/107 are missing on lore out of Andrew's > series of 143. Odd. It's weird. They don't turn up on linux-mm either, and that's running at kvack.org, also majordomo. They don't get through when sent with either heirloom-mailx or with sylpheed. Also, it seems that when Anshuman originally sent the patch, linux-mm and linux-kernel didn't send it back out. So perhaps a spam filter triggered? I'm seeing https://lore.kernel.org/linux-arm-kernel/1615278790-18053-3-git-send-email-anshuman.khandual@arm.com/ which is via linux-arm-kernel@lists.infradead.org but the linux-kernel server massacred that patch series. Searching https://lkml.org/lkml/2021/3/9 for "anshuman" only shows 3 of the 7 email series. One of the emails (as sent my me) is attached, if that helps. 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[198.145.29.99]) by mx.google.com with ESMTPS id c85si20173199pfb.8.2021.05.04.20.16.27 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 May 2021 20:16:28 -0700 (PDT) Received-SPF: pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) client-ip=198.145.29.99; Authentication-Results: mx.google.com; dkim=pass header.i=@linux-foundation.org header.s=korg header.b="Gdz/3wY9"; spf=pass (google.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org Received: by mail.kernel.org (Postfix) with ESMTPSA id A4DB4610D2; Wed, 5 May 2021 03:16:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1620184587; bh=TxN4wgKcKf2UUem+5pL09m9GL/7U592mEalo2U6vwAU=; h=Date:From:To:Subject:In-Reply-To:From; b=Gdz/3wY9ktH3hOmn2DAOkfh0JXwPdMJ8xsNQFa9eI25K39Z3iHdRGo9jX3QtMDtog D4Zakt52CQCYsV91c9oCai8KnCTkkAjJq/Ez7p8UHpz97Go3yYYxqg6DDl6d8HCQvN H47dTaZAgeH2sw29bjB9fRzNuTx7k4RAPlqZIpiE= Date: Tue, 04 May 2021 20:16:26 -0700 From: Andrew Morton <akpm@linux-foundation.org> To: akpm@linux-foundation.org, anshuman.khandual@arm.com, aou@eecs.berkeley.edu, arnd@arndb.de, benh@kernel.crashing.org, borntraeger@de.ibm.com, bp@alien8.de, catalin.marinas@arm.com, dalias@libc.org, deller@gmx.de, gor@linux.ibm.com, hca@linux.ibm.com, hpa@zytor.com, James.Bottomley@HansenPartnership.com, linux-mm@kvack.org, linux@armlinux.org.uk, mingo@redhat.com, mm-commits@vger.kernel.org, mpe@ellerman.id.au, palmerdabbelt@google.com, paul.walmsley@sifive.com, paulus@samba.org, tglx@linutronix.de, torvalds@linux-foundation.org, tsbogend@alpha.franken.de, vgupta@synopsys.com, viro@zeniv.linux.org.uk, will@kernel.org, ysato@users.osdn.me Subject: [patch 103/143] mm: generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS) Message-ID: <20210505031626.c8o4WL7KE%akpm@linux-foundation.org> In-Reply-To: <20210504183219.a3cc46aee4013d77402276c5@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Gm-Original-To: akpm@linux-foundation.org From: Anshuman Khandual <anshuman.khandual@arm.com> Subject: mm: generalize SYS_SUPPORTS_HUGETLBFS (rename as ARCH_SUPPORTS_HUGETLBFS) SYS_SUPPORTS_HUGETLBFS config has duplicate definitions on platforms that subscribe it. Instead, just make it a generic option which can be selected on applicable platforms. Also rename it as ARCH_SUPPORTS_HUGETLBFS instead. This reduces code duplication and makes it cleaner. Link: https://lkml.kernel.org/r/1617259448-22529-3-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Acked-by: Palmer Dabbelt <palmerdabbelt@google.com> [riscv] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- arch/arm/Kconfig | 5 +---- arch/arm64/Kconfig | 4 +--- arch/mips/Kconfig | 6 +----- arch/parisc/Kconfig | 5 +---- arch/powerpc/Kconfig | 3 --- arch/powerpc/platforms/Kconfig.cputype | 6 +++--- arch/riscv/Kconfig | 5 +---- arch/sh/Kconfig | 5 +---- fs/Kconfig | 5 ++++- 9 files changed, 13 insertions(+), 31 deletions(-) --- a/arch/arm64/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/arm64/Kconfig @@ -73,6 +73,7 @@ config ARM64 select ARCH_USE_QUEUED_SPINLOCKS select ARCH_USE_SYM_ANNOTATIONS select ARCH_SUPPORTS_DEBUG_PAGEALLOC + select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_MEMORY_FAILURE select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN @@ -1072,9 +1073,6 @@ config HW_PERF_EVENTS def_bool y depends on ARM_PMU -config SYS_SUPPORTS_HUGETLBFS - def_bool y - config ARCH_HAS_FILTER_PGPROT def_bool y --- a/arch/arm/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/arm/Kconfig @@ -31,6 +31,7 @@ config ARM select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_USE_MEMTEST @@ -1511,10 +1512,6 @@ config HW_PERF_EVENTS def_bool y depends on ARM_PMU -config SYS_SUPPORTS_HUGETLBFS - def_bool y - depends on ARM_LPAE - config HAVE_ARCH_TRANSPARENT_HUGEPAGE def_bool y depends on ARM_LPAE --- a/arch/mips/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/mips/Kconfig @@ -19,6 +19,7 @@ config MIPS select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS + select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_LD_ORPHAN_WARN @@ -1287,11 +1288,6 @@ config SYS_SUPPORTS_BIG_ENDIAN config SYS_SUPPORTS_LITTLE_ENDIAN bool -config SYS_SUPPORTS_HUGETLBFS - bool - depends on CPU_SUPPORTS_HUGEPAGES - default y - config MIPS_HUGE_TLB_SUPPORT def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE --- a/arch/parisc/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/parisc/Kconfig @@ -12,6 +12,7 @@ config PARISC select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_NO_SG_CHAIN + select ARCH_SUPPORTS_HUGETLBFS if PA20 select ARCH_SUPPORTS_MEMORY_FAILURE select DMA_OPS select RTC_CLASS @@ -138,10 +139,6 @@ config PGTABLE_LEVELS default 3 if 64BIT && PARISC_PAGE_SIZE_4KB default 2 -config SYS_SUPPORTS_HUGETLBFS - def_bool y if PA20 - - menu "Processor type and features" choice --- a/arch/powerpc/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/powerpc/Kconfig @@ -697,9 +697,6 @@ config ARCH_SPARSEMEM_DEFAULT def_bool y depends on PPC_BOOK3S_64 -config SYS_SUPPORTS_HUGETLBFS - bool - config ILLEGAL_POINTER_VALUE hex # This is roughly half way between the top of user space and the bottom --- a/arch/powerpc/platforms/Kconfig.cputype~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/powerpc/platforms/Kconfig.cputype @@ -40,8 +40,8 @@ config PPC_85xx config PPC_8xx bool "Freescale 8xx" + select ARCH_SUPPORTS_HUGETLBFS select FSL_SOC - select SYS_SUPPORTS_HUGETLBFS select PPC_HAVE_KUEP select PPC_HAVE_KUAP select HAVE_ARCH_VMAP_STACK @@ -95,9 +95,9 @@ config PPC_BOOK3S_64 bool "Server processors" select PPC_FPU select PPC_HAVE_PMU_SUPPORT - select SYS_SUPPORTS_HUGETLBFS select HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE + select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK select PPC_MM_SLICES @@ -278,9 +278,9 @@ config FSL_BOOKE # this is for common code between PPC32 & PPC64 FSL BOOKE config PPC_FSL_BOOK3E bool + select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 select FSL_EMB_PERFMON select PPC_SMP_MUXED_IPI - select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64 select PPC_DOORBELL default y if FSL_BOOKE --- a/arch/riscv/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/riscv/Kconfig @@ -30,6 +30,7 @@ config RISCV select ARCH_HAS_STRICT_KERNEL_RWX if MMU select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT + select ARCH_SUPPORTS_HUGETLBFS if MMU select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_HUGE_PMD_SHARE if 64BIT @@ -165,10 +166,6 @@ config ARCH_WANT_GENERAL_HUGETLB config ARCH_SUPPORTS_UPROBES def_bool y -config SYS_SUPPORTS_HUGETLBFS - depends on MMU - def_bool y - config STACKTRACE_SUPPORT def_bool y --- a/arch/sh/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/arch/sh/Kconfig @@ -101,9 +101,6 @@ config SYS_SUPPORTS_APM_EMULATION bool select ARCH_SUSPEND_POSSIBLE -config SYS_SUPPORTS_HUGETLBFS - bool - config SYS_SUPPORTS_SMP bool @@ -175,12 +172,12 @@ config CPU_SH3 config CPU_SH4 bool + select ARCH_SUPPORTS_HUGETLBFS if MMU select CPU_HAS_INTEVT select CPU_HAS_SR_RB select CPU_HAS_FPU if !CPU_SH4AL_DSP select SH_INTC select SYS_SUPPORTS_SH_TMU - select SYS_SUPPORTS_HUGETLBFS if MMU config CPU_SH4A bool --- a/fs/Kconfig~mm-generalize-sys_supports_hugetlbfs-rename-as-arch_supports_hugetlbfs +++ a/fs/Kconfig @@ -223,10 +223,13 @@ config TMPFS_INODE64 If unsure, say N. +config ARCH_SUPPORTS_HUGETLBFS + def_bool n + config HUGETLBFS bool "HugeTLB file system support" depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ - SYS_SUPPORTS_HUGETLBFS || BROKEN + ARCH_SUPPORTS_HUGETLBFS || BROKEN help hugetlbfs is a filesystem backing for HugeTLB pages, based on ramfs. For architectures that support it, say Y here and read _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-05-05 17:44 ` incoming Andrew Morton @ 2021-05-06 3:19 ` Anshuman Khandual 0 siblings, 0 replies; 530+ messages in thread From: Anshuman Khandual @ 2021-05-06 3:19 UTC (permalink / raw) To: Andrew Morton, Linus Torvalds; +Cc: Konstantin Ryabitsev, Linux-MM, mm-commits On 5/5/21 11:14 PM, Andrew Morton wrote: > On Wed, 5 May 2021 10:10:33 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > >> On Tue, May 4, 2021 at 8:16 PM Andrew Morton <akpm@linux-foundation.org> wrote: >>> Let me resend right now with the same in-reply-to. Hopefully they will >>> land in the correct place. >> Well, you re-sent it twice, and I have three copies in my own mailbox, >> bot they still don't show up on the mm-commits mailing list. >> >> So the list hates them for some odd reason. >> >> I've picked them up locally, but adding Konstantin to the participants >> to see if he can see what's up. >> >> Konstantin: patches 103/106/107 are missing on lore out of Andrew's >> series of 143. Odd. > It's weird. They don't turn up on linux-mm either, and that's running > at kvack.org, also majordomo. They don't get through when sent with > either heirloom-mailx or with sylpheed. > > Also, it seems that when Anshuman originally sent the patch, linux-mm > and linux-kernel didn't send it back out. So perhaps a spam filter > triggered? > > I'm seeing > > https://lore.kernel.org/linux-arm-kernel/1615278790-18053-3-git-send-email-anshuman.khandual@arm.com/ > > which is via linux-arm-kernel@lists.infradead.org but the linux-kernel > server massacred that patch series. Searching > https://lkml.org/lkml/2021/3/9 for "anshuman" only shows 3 of the 7 > email series. Yeah these patches faced problem from the very beginning getting into the MM/LKML list for some strange reason. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-04-30 5:52 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-04-30 5:52 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits A few misc subsystems and some of MM. 178 patches, based on 8ca5297e7e38f2dc8c753d33a5092e7be181fff0. Subsystems affected by this patch series: ia64 kbuild scripts sh ocfs2 kfifo vfs kernel/watchdog mm/slab-generic mm/slub mm/kmemleak mm/debug mm/pagecache mm/msync mm/gup mm/memremap mm/memcg mm/pagemap mm/mremap mm/dma mm/sparsemem mm/vmalloc mm/documentation mm/kasan mm/initialization mm/pagealloc mm/memory-failure Subsystem: ia64 Zhang Yunkai <zhang.yunkai@zte.com.cn>: arch/ia64/kernel/head.S: remove duplicate include Bhaskar Chowdhury <unixbhaskar@gmail.com>: arch/ia64/kernel/fsys.S: fix typos arch/ia64/include/asm/pgtable.h: minor typo fixes Valentin Schneider <valentin.schneider@arm.com>: ia64: ensure proper NUMA distance and possible map initialization Sergei Trofimovich <slyfox@gentoo.org>: ia64: drop unused IA64_FW_EMU ifdef ia64: simplify code flow around swiotlb init Bhaskar Chowdhury <unixbhaskar@gmail.com>: ia64: trivial spelling fixes Sergei Trofimovich <slyfox@gentoo.org>: ia64: fix EFI_DEBUG build ia64: mca: always make IA64_MCA_DEBUG an expression ia64: drop marked broken DISCONTIGMEM and VIRTUAL_MEM_MAP ia64: module: fix symbolizer crash on fdescr Subsystem: kbuild Luc Van Oostenryck <luc.vanoostenryck@gmail.com>: include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() Subsystem: scripts Tom Saeger <tom.saeger@oracle.com>: scripts/spelling.txt: add entries for recent discoveries Wan Jiabing <wanjiabing@vivo.com>: scripts: a new script for checking duplicate struct declaration Subsystem: sh Zhang Yunkai <zhang.yunkai@zte.com.cn>: arch/sh/include/asm/tlb.h: remove duplicate include Subsystem: ocfs2 Yang Li <yang.lee@linux.alibaba.com>: ocfs2: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: map flags directly in flags_to_o2dlm() Bhaskar Chowdhury <unixbhaskar@gmail.com>: ocfs2: fix a typo Jiapeng Chong <jiapeng.chong@linux.alibaba.com>: ocfs2/dlm: remove unused function Subsystem: kfifo Dan Carpenter <dan.carpenter@oracle.com>: kfifo: fix ternary sign extension bugs Subsystem: vfs Randy Dunlap <rdunlap@infradead.org>: vfs: fs_parser: clean up kernel-doc warnings Subsystem: kernel/watchdog Petr Mladek <pmladek@suse.com>: Patch series "watchdog/softlockup: Report overall time and some cleanup", v2: watchdog: rename __touch_watchdog() to a better descriptive name watchdog: explicitly update timestamp when reporting softlockup watchdog/softlockup: report the overall time of softlockups watchdog/softlockup: remove logic that tried to prevent repeated reports watchdog: fix barriers when printing backtraces from all CPUs watchdog: cleanup handling of false positives Subsystem: mm/slab-generic Rafael Aquini <aquini@redhat.com>: mm/slab_common: provide "slab_merge" option for !IS_ENABLED(CONFIG_SLAB_MERGE_DEFAULT) builds Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: mm, slub: enable slub_debug static key when creating cache with explicit debug flags Oliver Glitta <glittao@gmail.com>: kunit: add a KUnit test for SLUB debugging functionality slub: remove resiliency_test() function Bhaskar Chowdhury <unixbhaskar@gmail.com>: mm/slub.c: trivial typo fixes Subsystem: mm/kmemleak Bhaskar Chowdhury <unixbhaskar@gmail.com>: mm/kmemleak.c: fix a typo Subsystem: mm/debug Georgi Djakov <georgi.djakov@linaro.org>: mm/page_owner: record the timestamp of all pages during free zhongjiang-ali <zhongjiang-ali@linux.alibaba.com>: mm, page_owner: remove unused parameter in __set_page_owner_handle Sergei Trofimovich <slyfox@gentoo.org>: mm: page_owner: fetch backtrace only for tracked pages mm: page_owner: use kstrtobool() to parse bool option mm: page_owner: detect page_owner recursion via task_struct mm: page_poison: print page info when corruption is caught Anshuman Khandual <anshuman.khandual@arm.com>: mm/memtest: add ARCH_USE_MEMTEST Subsystem: mm/pagecache Jens Axboe <axboe@kernel.dk>: Patch series "Improve IOCB_NOWAIT O_DIRECT reads", v3: mm: provide filemap_range_needs_writeback() helper mm: use filemap_range_needs_writeback() for O_DIRECT reads iomap: use filemap_range_needs_writeback() for O_DIRECT reads "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap: use filemap_read_page in filemap_fault mm/filemap: drop check for truncated page after I/O Johannes Weiner <hannes@cmpxchg.org>: mm: page-writeback: simplify memcg handling in test_clear_page_writeback() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: move page_mapping_file to pagemap.h Rui Sun <sunrui26@huawei.com>: mm/filemap: update stale comment Subsystem: mm/msync Nikita Ermakov <sh1r4s3@mail.si-head.nl>: mm/msync: exit early when the flags is an MS_ASYNC and start < vm_start Subsystem: mm/gup Joao Martins <joao.m.martins@oracle.com>: Patch series "mm/gup: page unpining improvements", v4: mm/gup: add compound page list iterator mm/gup: decrement head page once for group of subpages mm/gup: add a range variant of unpin_user_pages_dirty_lock() RDMA/umem: batch page unpin in __ib_umem_release() Yang Shi <shy828301@gmail.com>: mm: gup: remove FOLL_SPLIT Subsystem: mm/memremap Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/memremap.c: fix improper SPDX comment style Subsystem: mm/memcg Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: fix kernel stack account Shakeel Butt <shakeelb@google.com>: memcg: cleanup root memcg checks memcg: enable memcg oom-kill for __GFP_NOFAIL Johannes Weiner <hannes@cmpxchg.org>: Patch series "mm: memcontrol: switch to rstat", v3: mm: memcontrol: fix cpuhotplug statistics flushing mm: memcontrol: kill mem_cgroup_nodeinfo() mm: memcontrol: privatize memcg_page_state query functions cgroup: rstat: support cgroup1 cgroup: rstat: punt root-level optimization to individual controllers mm: memcontrol: switch to rstat mm: memcontrol: consolidate lruvec stat flushing kselftests: cgroup: update kmem test for new vmstat implementation Shakeel Butt <shakeelb@google.com>: memcg: charge before adding to swapcache on swapin Muchun Song <songmuchun@bytedance.com>: Patch series "Use obj_cgroup APIs to charge kmem pages", v5: mm: memcontrol: slab: fix obtain a reference to a freeing memcg mm: memcontrol: introduce obj_cgroup_{un}charge_pages mm: memcontrol: directly access page->memcg_data in mm/page_alloc.c mm: memcontrol: change ug->dummy_page only if memcg changed mm: memcontrol: use obj_cgroup APIs to charge kmem pages mm: memcontrol: inline __memcg_kmem_{un}charge() into obj_cgroup_{un}charge_pages() mm: memcontrol: move PageMemcgKmem to the scope of CONFIG_MEMCG_KMEM Wan Jiabing <wanjiabing@vivo.com>: linux/memcontrol.h: remove duplicate struct declaration Johannes Weiner <hannes@cmpxchg.org>: mm: page_counter: mitigate consequences of a page_counter underflow Subsystem: mm/pagemap Wang Qing <wangqing@vivo.com>: mm/memory.c: do_numa_page(): delete bool "migrated" Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/interval_tree: add comments to improve code readability Oscar Salvador <osalvador@suse.de>: Patch series "Cleanup and fixups for vmemmap handling", v6: x86/vmemmap: drop handling of 4K unaligned vmemmap range x86/vmemmap: drop handling of 1GB vmemmap ranges x86/vmemmap: handle unpopulated sub-pmd ranges x86/vmemmap: optimize for consecutive sections in partial populated PMDs Ovidiu Panait <ovidiu.panait@windriver.com>: mm, tracing: improve rss_stat tracepoint message Christoph Hellwig <hch@lst.de>: Patch series "add remap_pfn_range_notrack instead of reinventing it in i915", v2: mm: add remap_pfn_range_notrack mm: add a io_mapping_map_user helper i915: use io_mapping_map_user i915: fix remap_io_sg to verify the pgprot Huang Ying <ying.huang@intel.com>: NUMA balancing: reduce TLB flush via delaying mapping on hint page fault Subsystem: mm/mremap Brian Geffon <bgeffon@google.com>: Patch series "mm: Extend MREMAP_DONTUNMAP to non-anonymous mappings", v5: mm: extend MREMAP_DONTUNMAP to non-anonymous mappings Revert "mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio" selftests: add a MREMAP_DONTUNMAP selftest for shmem Subsystem: mm/dma Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/dmapool: switch from strlcpy to strscpy Subsystem: mm/sparsemem Wang Wensheng <wangwensheng4@huawei.com>: mm/sparse: add the missing sparse_buffer_fini() in error branch Subsystem: mm/vmalloc Christoph Hellwig <hch@lst.de>: Patch series "remap_vmalloc_range cleanups": samples/vfio-mdev/mdpy: use remap_vmalloc_range mm: unexport remap_vmalloc_range_partial Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>: mm/vmalloc: use rb_tree instead of list for vread() lookups Nicholas Piggin <npiggin@gmail.com>: Patch series "huge vmalloc mappings", v13: ARM: mm: add missing pud_page define to 2-level page tables mm/vmalloc: fix HUGE_VMAP regression by enabling huge pages in vmalloc_to_page mm: apply_to_pte_range warn and fail if a large pte is encountered mm/vmalloc: rename vmap_*_range vmap_pages_*_range mm/ioremap: rename ioremap_*_range to vmap_*_range mm: HUGE_VMAP arch support cleanup powerpc: inline huge vmap supported functions arm64: inline huge vmap supported functions x86: inline huge vmap supported functions mm/vmalloc: provide fallback arch huge vmap support functions mm: move vmap_range from mm/ioremap.c to mm/vmalloc.c mm/vmalloc: add vmap_range_noflush variant mm/vmalloc: hugepage vmalloc mappings Patch series "mm/vmalloc: cleanup after hugepage series", v2: mm/vmalloc: remove map_kernel_range kernel/dma: remove unnecessary unmap_kernel_range powerpc/xive: remove unnecessary unmap_kernel_range mm/vmalloc: remove unmap_kernel_range mm/vmalloc: improve allocation failure error messages Vijayanand Jitta <vjitta@codeaurora.org>: mm: vmalloc: prevent use after free in _vm_unmap_aliases "Uladzislau Rezki (Sony)" <urezki@gmail.com>: lib/test_vmalloc.c: remove two kvfree_rcu() tests lib/test_vmalloc.c: add a new 'nr_threads' parameter vm/test_vmalloc.sh: adapt for updated driver interface mm/vmalloc: refactor the preloading loagic mm/vmalloc: remove an empty line Subsystem: mm/documentation "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/doc: fix fault_flag_allow_retry_first kerneldoc mm/doc: fix page_maybe_dma_pinned kerneldoc mm/doc: turn fault flags into an enum mm/doc: add mm.h and mm_types.h to the mm-api document Lukas Bulwahn <lukas.bulwahn@gmail.com>: Patch series "kernel-doc and MAINTAINERS clean-up": MAINTAINERS: assign pagewalk.h to MEMORY MANAGEMENT pagewalk: prefix struct kernel-doc descriptions Subsystem: mm/kasan Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/kasan: switch from strlcpy to strscpy Peter Collingbourne <pcc@google.com>: kasan: fix kasan_byte_accessible() to be consistent with actual checks Andrey Konovalov <andreyknvl@google.com>: kasan: initialize shadow to TAG_INVALID for SW_TAGS mm, kasan: don't poison boot memory with tag-based modes Patch series "kasan: integrate with init_on_alloc/free", v3: arm64: kasan: allow to init memory when setting tags kasan: init memory in kasan_(un)poison for HW_TAGS kasan, mm: integrate page_alloc init with HW_TAGS kasan, mm: integrate slab init_on_alloc with HW_TAGS kasan, mm: integrate slab init_on_free with HW_TAGS kasan: docs: clean up sections kasan: docs: update overview section kasan: docs: update usage section kasan: docs: update error reports section kasan: docs: update boot parameters section kasan: docs: update GENERIC implementation details section kasan: docs: update SW_TAGS implementation details section kasan: docs: update HW_TAGS implementation details section kasan: docs: update shadow memory section kasan: docs: update ignoring accesses section kasan: docs: update tests section Walter Wu <walter-zh.wu@mediatek.com>: kasan: record task_work_add() call stack Andrey Konovalov <andreyknvl@google.com>: kasan: detect false-positives in tests Zqiang <qiang.zhang@windriver.com>: irq_work: record irq_work_queue() call stack Subsystem: mm/initialization Kefeng Wang <wangkefeng.wang@huawei.com>: mm: move mem_init_print_info() into mm_init() Subsystem: mm/pagealloc David Hildenbrand <david@redhat.com>: mm/page_alloc: drop pr_info_ratelimited() in alloc_contig_range() Minchan Kim <minchan@kernel.org>: mm: remove lru_add_drain_all in alloc_contig_range Yu Zhao <yuzhao@google.com>: include/linux/page-flags-layout.h: correctly determine LAST_CPUPID_WIDTH include/linux/page-flags-layout.h: cleanups "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Rationalise __alloc_pages wrappers", v3: mm/page_alloc: rename alloc_mask to alloc_gfp mm/page_alloc: rename gfp_mask to gfp mm/page_alloc: combine __alloc_pages and __alloc_pages_nodemask mm/mempolicy: rename alloc_pages_current to alloc_pages mm/mempolicy: rewrite alloc_pages documentation mm/mempolicy: rewrite alloc_pages_vma documentation mm/mempolicy: fix mpol_misplaced kernel-doc Minchan Kim <minchan@kernel.org>: mm: page_alloc: dump migrate-failed pages Geert Uytterhoeven <geert@linux-m68k.org>: mm/Kconfig: remove default DISCONTIGMEM_MANUAL Kefeng Wang <wangkefeng.wang@huawei.com>: mm, page_alloc: avoid page_to_pfn() in move_freepages() zhouchuangao <zhouchuangao@vivo.com>: mm/page_alloc: duplicate include linux/vmalloc.h Mel Gorman <mgorman@techsingularity.net>: Patch series "Introduce a bulk order-0 page allocator with two in-tree users", v6: mm/page_alloc: rename alloced to allocated mm/page_alloc: add a bulk page allocator mm/page_alloc: add an array-based interface to the bulk page allocator Jesper Dangaard Brouer <brouer@redhat.com>: mm/page_alloc: optimize code layout for __alloc_pages_bulk mm/page_alloc: inline __rmqueue_pcplist Chuck Lever <chuck.lever@oracle.com>: Patch series "SUNRPC consumer for the bulk page allocator": SUNRPC: set rq_page_end differently SUNRPC: refresh rq_pages using a bulk page allocator Jesper Dangaard Brouer <brouer@redhat.com>: net: page_pool: refactor dma_map into own function page_pool_dma_map net: page_pool: use alloc_pages_bulk in refill code path Sergei Trofimovich <slyfox@gentoo.org>: mm: page_alloc: ignore init_on_free=1 for debug_pagealloc=1 huxiang <huxiang@uniontech.com>: mm/page_alloc: redundant definition variables of pfn in for loop Mike Rapoport <rppt@linux.ibm.com>: mm/mmzone.h: fix existing kernel-doc comments and link them to core-api Subsystem: mm/memory-failure Jane Chu <jane.chu@oracle.com>: mm/memory-failure: unnecessary amount of unmapping Documentation/admin-guide/kernel-parameters.txt | 7 Documentation/admin-guide/mm/transhuge.rst | 2 Documentation/core-api/cachetlb.rst | 4 Documentation/core-api/mm-api.rst | 6 Documentation/dev-tools/kasan.rst | 355 +++++----- Documentation/vm/page_owner.rst | 2 Documentation/vm/transhuge.rst | 5 MAINTAINERS | 1 arch/Kconfig | 11 arch/alpha/mm/init.c | 1 arch/arc/mm/init.c | 1 arch/arm/Kconfig | 1 arch/arm/include/asm/pgtable-3level.h | 2 arch/arm/include/asm/pgtable.h | 3 arch/arm/mm/copypage-v4mc.c | 1 arch/arm/mm/copypage-v6.c | 1 arch/arm/mm/copypage-xscale.c | 1 arch/arm/mm/init.c | 2 arch/arm64/Kconfig | 1 arch/arm64/include/asm/memory.h | 4 arch/arm64/include/asm/mte-kasan.h | 39 - arch/arm64/include/asm/vmalloc.h | 38 - arch/arm64/mm/init.c | 4 arch/arm64/mm/mmu.c | 36 - arch/csky/abiv1/cacheflush.c | 1 arch/csky/mm/init.c | 1 arch/h8300/mm/init.c | 2 arch/hexagon/mm/init.c | 1 arch/ia64/Kconfig | 23 arch/ia64/configs/bigsur_defconfig | 1 arch/ia64/include/asm/meminit.h | 11 arch/ia64/include/asm/module.h | 6 arch/ia64/include/asm/page.h | 25 arch/ia64/include/asm/pgtable.h | 7 arch/ia64/kernel/Makefile | 2 arch/ia64/kernel/acpi.c | 7 arch/ia64/kernel/efi.c | 11 arch/ia64/kernel/fsys.S | 4 arch/ia64/kernel/head.S | 6 arch/ia64/kernel/ia64_ksyms.c | 12 arch/ia64/kernel/machine_kexec.c | 2 arch/ia64/kernel/mca.c | 4 arch/ia64/kernel/module.c | 29 arch/ia64/kernel/pal.S | 6 arch/ia64/mm/Makefile | 1 arch/ia64/mm/contig.c | 4 arch/ia64/mm/discontig.c | 21 arch/ia64/mm/fault.c | 15 arch/ia64/mm/init.c | 221 ------ arch/m68k/mm/init.c | 1 arch/microblaze/mm/init.c | 1 arch/mips/Kconfig | 1 arch/mips/loongson64/numa.c | 1 arch/mips/mm/cache.c | 1 arch/mips/mm/init.c | 1 arch/mips/sgi-ip27/ip27-memory.c | 1 arch/nds32/mm/init.c | 1 arch/nios2/mm/cacheflush.c | 1 arch/nios2/mm/init.c | 1 arch/openrisc/mm/init.c | 2 arch/parisc/mm/init.c | 2 arch/powerpc/Kconfig | 1 arch/powerpc/include/asm/vmalloc.h | 34 - arch/powerpc/kernel/isa-bridge.c | 4 arch/powerpc/kernel/pci_64.c | 2 arch/powerpc/mm/book3s64/radix_pgtable.c | 29 arch/powerpc/mm/ioremap.c | 2 arch/powerpc/mm/mem.c | 1 arch/powerpc/sysdev/xive/common.c | 4 arch/riscv/mm/init.c | 1 arch/s390/mm/init.c | 2 arch/sh/include/asm/tlb.h | 10 arch/sh/mm/cache-sh4.c | 1 arch/sh/mm/cache-sh7705.c | 1 arch/sh/mm/init.c | 1 arch/sparc/include/asm/pgtable_32.h | 3 arch/sparc/mm/init_32.c | 2 arch/sparc/mm/init_64.c | 1 arch/sparc/mm/tlb.c | 1 arch/um/kernel/mem.c | 1 arch/x86/Kconfig | 1 arch/x86/include/asm/vmalloc.h | 42 - arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 2 arch/x86/mm/init_32.c | 2 arch/x86/mm/init_64.c | 222 ++++-- arch/x86/mm/ioremap.c | 33 arch/x86/mm/pgtable.c | 13 arch/xtensa/Kconfig | 1 arch/xtensa/mm/init.c | 1 block/blk-cgroup.c | 17 drivers/gpu/drm/i915/Kconfig | 1 drivers/gpu/drm/i915/gem/i915_gem_mman.c | 9 drivers/gpu/drm/i915/i915_drv.h | 3 drivers/gpu/drm/i915/i915_mm.c | 117 --- drivers/infiniband/core/umem.c | 12 drivers/pci/pci.c | 2 fs/aio.c | 5 fs/fs_parser.c | 2 fs/iomap/direct-io.c | 24 fs/ocfs2/blockcheck.c | 2 fs/ocfs2/dlm/dlmrecovery.c | 7 fs/ocfs2/stack_o2cb.c | 36 - fs/ocfs2/stackglue.c | 2 include/linux/compiler-gcc.h | 8 include/linux/fs.h | 2 include/linux/gfp.h | 45 - include/linux/io-mapping.h | 3 include/linux/io.h | 9 include/linux/kasan.h | 51 + include/linux/memcontrol.h | 271 ++++---- include/linux/mm.h | 50 - include/linux/mmzone.h | 43 - include/linux/page-flags-layout.h | 64 - include/linux/pagemap.h | 10 include/linux/pagewalk.h | 4 include/linux/sched.h | 4 include/linux/slab.h | 2 include/linux/slub_def.h | 2 include/linux/vmalloc.h | 73 +- include/linux/vmstat.h | 24 include/net/page_pool.h | 2 include/trace/events/kmem.h | 24 init/main.c | 2 kernel/cgroup/cgroup.c | 34 - kernel/cgroup/rstat.c | 61 + kernel/dma/remap.c | 1 kernel/fork.c | 13 kernel/irq_work.c | 7 kernel/task_work.c | 3 kernel/watchdog.c | 102 +-- lib/Kconfig.debug | 14 lib/Makefile | 1 lib/test_kasan.c | 59 - lib/test_slub.c | 124 +++ lib/test_vmalloc.c | 128 +-- mm/Kconfig | 4 mm/Makefile | 1 mm/debug_vm_pgtable.c | 4 mm/dmapool.c | 2 mm/filemap.c | 61 + mm/gup.c | 145 +++- mm/hugetlb.c | 2 mm/internal.h | 25 mm/interval_tree.c | 2 mm/io-mapping.c | 29 mm/ioremap.c | 361 ++-------- mm/kasan/common.c | 53 - mm/kasan/generic.c | 12 mm/kasan/kasan.h | 28 mm/kasan/report_generic.c | 2 mm/kasan/shadow.c | 10 mm/kasan/sw_tags.c | 12 mm/kmemleak.c | 2 mm/memcontrol.c | 798 ++++++++++++------------ mm/memory-failure.c | 2 mm/memory.c | 191 +++-- mm/mempolicy.c | 78 -- mm/mempool.c | 4 mm/memremap.c | 2 mm/migrate.c | 2 mm/mm_init.c | 4 mm/mmap.c | 6 mm/mremap.c | 6 mm/msync.c | 6 mm/page-writeback.c | 9 mm/page_alloc.c | 430 +++++++++--- mm/page_counter.c | 8 mm/page_owner.c | 68 -- mm/page_poison.c | 6 mm/percpu-vm.c | 7 mm/slab.c | 43 - mm/slab.h | 24 mm/slab_common.c | 10 mm/slub.c | 215 ++---- mm/sparse.c | 1 mm/swap_state.c | 13 mm/util.c | 10 mm/vmalloc.c | 728 ++++++++++++++++----- net/core/page_pool.c | 127 ++- net/sunrpc/svc_xprt.c | 38 - samples/kfifo/bytestream-example.c | 8 samples/kfifo/inttype-example.c | 8 samples/kfifo/record-example.c | 8 samples/vfio-mdev/mdpy.c | 4 scripts/checkdeclares.pl | 53 + scripts/spelling.txt | 26 tools/testing/selftests/cgroup/test_kmem.c | 22 tools/testing/selftests/vm/mremap_dontunmap.c | 52 + tools/testing/selftests/vm/test_vmalloc.sh | 21 189 files changed, 3642 insertions(+), 3013 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-04-23 21:28 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-04-23 21:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 5 patches, based on 5bfc75d92efd494db37f5c4c173d3639d4772966. Subsystems affected by this patch series: coda overlayfs mm/pagecache mm/memcg Subsystem: coda Christian König <christian.koenig@amd.com>: coda: fix reference counting in coda_file_mmap error path Subsystem: overlayfs Christian König <christian.koenig@amd.com>: ovl: fix reference counting in ovl_mmap error path Subsystem: mm/pagecache Hugh Dickins <hughd@google.com>: mm/filemap: fix find_lock_entries hang on 32-bit THP mm/filemap: fix mapping_seek_hole_data on THP & 32-bit Subsystem: mm/memcg Vasily Averin <vvs@virtuozzo.com>: tools/cgroup/slabinfo.py: updated to work on current kernel fs/coda/file.c | 6 +++--- fs/overlayfs/file.c | 11 +---------- mm/filemap.c | 31 +++++++++++++++++++------------ tools/cgroup/memcg_slabinfo.py | 8 ++++---- 4 files changed, 27 insertions(+), 29 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-04-16 22:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-04-16 22:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 12 patches, based on 06c2aac4014c38247256fe49c61b7f55890271e7. Subsystems affected by this patch series: mm/documentation mm/kasan csky ia64 mm/pagemap gcov lib Subsystem: mm/documentation Randy Dunlap <rdunlap@infradead.org>: mm: eliminate "expecting prototype" kernel-doc warnings Subsystem: mm/kasan Arnd Bergmann <arnd@arndb.de>: kasan: fix hwasan build for gcc Walter Wu <walter-zh.wu@mediatek.com>: kasan: remove redundant config option Subsystem: csky Randy Dunlap <rdunlap@infradead.org>: csky: change a Kconfig symbol name to fix e1000 build error Subsystem: ia64 Randy Dunlap <rdunlap@infradead.org>: ia64: remove duplicate entries in generic_defconfig ia64: fix discontig.c section mismatches John Paul Adrian Glaubitz <glaubitz () physik ! fu-berlin ! de>: ia64: tools: remove inclusion of ia64-specific version of errno.h header John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>: ia64: tools: remove duplicate definition of ia64_mf() on ia64 Subsystem: mm/pagemap Zack Rusin <zackr@vmware.com>: mm/mapping_dirty_helpers: guard hugepage pud's usage Christophe Leroy <christophe.leroy@csgroup.eu>: mm: ptdump: fix build failure Subsystem: gcov Johannes Berg <johannes.berg@intel.com>: gcov: clang: fix clang-11+ build Subsystem: lib Randy Dunlap <rdunlap@infradead.org>: lib: remove "expecting prototype" kernel-doc warnings arch/arm64/kernel/sleep.S | 2 +- arch/csky/Kconfig | 2 +- arch/csky/include/asm/page.h | 2 +- arch/ia64/configs/generic_defconfig | 2 -- arch/ia64/mm/discontig.c | 6 +++--- arch/x86/kernel/acpi/wakeup_64.S | 2 +- include/linux/kasan.h | 2 +- kernel/gcov/clang.c | 2 +- lib/Kconfig.kasan | 9 ++------- lib/earlycpio.c | 4 ++-- lib/lru_cache.c | 3 ++- lib/parman.c | 4 ++-- lib/radix-tree.c | 11 ++++++----- mm/kasan/common.c | 2 +- mm/kasan/kasan.h | 2 +- mm/kasan/report_generic.c | 2 +- mm/mapping_dirty_helpers.c | 2 ++ mm/mmu_gather.c | 29 +++++++++++++++++++---------- mm/oom_kill.c | 2 +- mm/ptdump.c | 2 +- mm/shuffle.c | 4 ++-- scripts/Makefile.kasan | 22 ++++++++++++++-------- security/Kconfig.hardening | 4 ++-- tools/arch/ia64/include/asm/barrier.h | 3 --- tools/include/uapi/asm/errno.h | 2 -- 25 files changed, 67 insertions(+), 60 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-04-09 20:26 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-04-09 20:26 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 16 patches, based on 17e7124aad766b3f158943acb51467f86220afe9. Subsystems affected by this patch series: MAINTAINERS mailmap mm/kasan mm/gup nds32 gcov ocfs2 ia64 mm/pagecache mm/kasan mm/kfence lib Subsystem: MAINTAINERS Marek Behún <kabel@kernel.org>: MAINTAINERS: update CZ.NIC's Turris information treewide: change my e-mail address, fix my name Subsystem: mailmap Jordan Crouse <jordan@cosmicpenguin.net>: mailmap: update email address for Jordan Crouse Matthew Wilcox <willy@infradead.org>: .mailmap: fix old email addresses Subsystem: mm/kasan Arnd Bergmann <arnd@arndb.de>: kasan: fix hwasan build for gcc Walter Wu <walter-zh.wu@mediatek.com>: kasan: remove redundant config option Subsystem: mm/gup Aili Yao <yaoaili@kingsoft.com>: mm/gup: check page posion status for coredump. Subsystem: nds32 Mike Rapoport <rppt@linux.ibm.com>: nds32: flush_dcache_page: use page_mapping_file to avoid races with swapoff Subsystem: gcov Nick Desaulniers <ndesaulniers@google.com>: gcov: re-fix clang-11+ support Subsystem: ocfs2 Wengang Wang <wen.gang.wang@oracle.com>: ocfs2: fix deadlock between setattr and dio_end_io_write Subsystem: ia64 Sergei Trofimovich <slyfox@gentoo.org>: ia64: fix user_stack_pointer() for ptrace() Subsystem: mm/pagecache Jack Qiu <jack.qiu@huawei.com>: fs: direct-io: fix missing sdio->boundary Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: fix conflict with page poisoning Andrew Morton <akpm@linux-foundation.org>: lib/test_kasan_module.c: suppress unused var warning Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence, x86: fix preemptible warning on KPTI-enabled systems Subsystem: lib Julian Braha <julianbraha@gmail.com>: lib: fix kconfig dependency on ARCH_WANT_FRAME_POINTERS .mailmap | 7 ++ Documentation/ABI/testing/debugfs-moxtet | 4 - Documentation/ABI/testing/debugfs-turris-mox-rwtm | 2 Documentation/ABI/testing/sysfs-bus-moxtet-devices | 6 +- Documentation/ABI/testing/sysfs-class-led-driver-turris-omnia | 2 Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm | 10 +-- Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml | 2 MAINTAINERS | 13 +++- arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts | 2 arch/arm64/kernel/sleep.S | 2 arch/ia64/include/asm/ptrace.h | 8 -- arch/nds32/mm/cacheflush.c | 2 arch/x86/include/asm/kfence.h | 7 ++ arch/x86/kernel/acpi/wakeup_64.S | 2 drivers/bus/moxtet.c | 4 - drivers/firmware/turris-mox-rwtm.c | 4 - drivers/gpio/gpio-moxtet.c | 4 - drivers/leds/leds-turris-omnia.c | 4 - drivers/mailbox/armada-37xx-rwtm-mailbox.c | 4 - drivers/watchdog/armada_37xx_wdt.c | 4 - fs/direct-io.c | 5 + fs/ocfs2/aops.c | 11 --- fs/ocfs2/file.c | 8 ++ include/dt-bindings/bus/moxtet.h | 2 include/linux/armada-37xx-rwtm-mailbox.h | 2 include/linux/kasan.h | 2 include/linux/moxtet.h | 2 kernel/gcov/clang.c | 29 ++++++---- lib/Kconfig.debug | 6 +- lib/Kconfig.kasan | 9 --- lib/test_kasan_module.c | 2 mm/gup.c | 4 + mm/internal.h | 20 ++++++ mm/kasan/common.c | 2 mm/kasan/kasan.h | 2 mm/kasan/report_generic.c | 2 mm/page_poison.c | 4 + scripts/Makefile.kasan | 18 ++++-- security/Kconfig.hardening | 4 - 39 files changed, 136 insertions(+), 91 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-03-25 4:36 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-03-25 4:36 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 14 patches, based on 7acac4b3196caee5e21fb5ea53f8bc124e6a16fc. Subsystems affected by this patch series: mm/hugetlb mm/kasan mm/gup mm/selftests mm/z3fold squashfs ia64 gcov mm/kfence mm/memblock mm/highmem mailmap Subsystem: mm/hugetlb Miaohe Lin <linmiaohe@huawei.com>: hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: fix per-page tags for non-page_alloc pages Subsystem: mm/gup Sean Christopherson <seanjc@google.com>: mm/mmu_notifiers: ensure range_end() is paired with range_start() Subsystem: mm/selftests Rong Chen <rong.a.chen@intel.com>: selftests/vm: fix out-of-tree build Subsystem: mm/z3fold Thomas Hebb <tommyhebb@gmail.com>: z3fold: prevent reclaim/free race for headless pages Subsystem: squashfs Sean Nyekjaer <sean@geanix.com>: squashfs: fix inode lookup sanity checks Phillip Lougher <phillip@squashfs.org.uk>: squashfs: fix xattr id and id lookup sanity checks Subsystem: ia64 Sergei Trofimovich <slyfox@gentoo.org>: ia64: mca: allocate early mca with GFP_ATOMIC ia64: fix format strings for err_inject Subsystem: gcov Nick Desaulniers <ndesaulniers@google.com>: gcov: fix clang-11+ support Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: make compatible with kmemleak Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: mm: memblock: fix section mismatch warning again Subsystem: mm/highmem Ira Weiny <ira.weiny@intel.com>: mm/highmem: fix CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP Subsystem: mailmap Andrey Konovalov <andreyknvl@google.com>: mailmap: update Andrey Konovalov's email address .mailmap | 1 arch/ia64/kernel/err_inject.c | 22 +++++------ arch/ia64/kernel/mca.c | 2 - fs/squashfs/export.c | 8 +++- fs/squashfs/id.c | 6 ++- fs/squashfs/squashfs_fs.h | 1 fs/squashfs/xattr_id.c | 6 ++- include/linux/hugetlb_cgroup.h | 15 ++++++- include/linux/memblock.h | 4 +- include/linux/mm.h | 18 +++++++-- include/linux/mmu_notifier.h | 10 ++--- kernel/gcov/clang.c | 69 ++++++++++++++++++++++++++++++++++++ mm/highmem.c | 4 +- mm/hugetlb.c | 41 +++++++++++++++++++-- mm/hugetlb_cgroup.c | 10 ++++- mm/kfence/core.c | 9 ++++ mm/kmemleak.c | 3 + mm/mmu_notifier.c | 23 ++++++++++++ mm/z3fold.c | 16 +++++++- tools/testing/selftests/vm/Makefile | 4 +- 20 files changed, 230 insertions(+), 42 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-03-13 5:06 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-03-13 5:06 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 29 patches, based on f78d76e72a4671ea52d12752d92077788b4f5d50. Subsystems affected by this patch series: mm/memblock core-kernel kconfig mm/pagealloc fork mm/hugetlb mm/highmem binfmt MAINTAINERS kbuild mm/kfence mm/oom-kill mm/madvise mm/kasan mm/userfaultfd mm/memory-failure ia64 mm/memcg mm/zram Subsystem: mm/memblock Arnd Bergmann <arnd@arndb.de>: memblock: fix section mismatch warning Subsystem: core-kernel Arnd Bergmann <arnd@arndb.de>: stop_machine: mark helpers __always_inline Subsystem: kconfig Masahiro Yamada <masahiroy@kernel.org>: init/Kconfig: make COMPILE_TEST depend on HAS_IOMEM Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: mm/page_alloc.c: refactor initialization of struct page for holes in memory layout Subsystem: fork Fenghua Yu <fenghua.yu@intel.com>: mm/fork: clear PASID for new mm Subsystem: mm/hugetlb Peter Xu <peterx@redhat.com>: Patch series "mm/hugetlb: Early cow on fork, and a few cleanups", v5: hugetlb: dedup the code to add a new file_region hugetlb: break earlier in add_reservation_in_range() when we can mm: introduce page_needs_cow_for_dma() for deciding whether cow mm: use is_cow_mapping() across tree where proper hugetlb: do early cow when page pinned on src mm Subsystem: mm/highmem OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>: mm/highmem.c: fix zero_user_segments() with start > end Subsystem: binfmt Lior Ribak <liorribak@gmail.com>: binfmt_misc: fix possible deadlock in bm_register_write Subsystem: MAINTAINERS Vlastimil Babka <vbabka@suse.cz>: MAINTAINERS: exclude uapi directories in API/ABI section Subsystem: kbuild Arnd Bergmann <arnd@arndb.de>: linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP* Subsystem: mm/kfence Marco Elver <elver@google.com>: kfence: fix printk format for ptrdiff_t kfence, slab: fix cache_alloc_debugcheck_after() for bulk allocations kfence: fix reports if constant function prefixes exist Subsystem: mm/oom-kill "Matthew Wilcox (Oracle)" <willy@infradead.org>: include/linux/sched/mm.h: use rcu_dereference in in_vfork() Subsystem: mm/madvise Suren Baghdasaryan <surenb@google.com>: mm/madvise: replace ptrace attach requirement for process_madvise Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan, mm: fix crash with HW_TAGS and DEBUG_PAGEALLOC kasan: fix KASAN_STACK dependency for HW_TAGS Subsystem: mm/userfaultfd Nadav Amit <namit@vmware.com>: mm/userfaultfd: fix memory corruption due to writeprotect Subsystem: mm/memory-failure Naoya Horiguchi <naoya.horiguchi@nec.com>: mm, hwpoison: do not lock page again when me_huge_page() successfully recovers Subsystem: ia64 Sergei Trofimovich <slyfox@gentoo.org>: ia64: fix ia64_syscall_get_set_arguments() for break-based syscalls ia64: fix ptrace(PTRACE_SYSCALL_INFO_EXIT) sign Subsystem: mm/memcg Zhou Guanghui <zhouguanghui1@huawei.com>: mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument mm/memcg: set memcg when splitting page Subsystem: mm/zram Minchan Kim <minchan@kernel.org>: zram: fix return value on writeback_store zram: fix broken page writeback MAINTAINERS | 4 arch/ia64/include/asm/syscall.h | 2 arch/ia64/kernel/ptrace.c | 24 +++- drivers/block/zram/zram_drv.c | 17 +- drivers/gpu/drm/vmwgfx/vmwgfx_page_dirty.c | 4 drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c | 2 fs/binfmt_misc.c | 29 ++--- fs/proc/task_mmu.c | 2 include/linux/compiler-clang.h | 6 + include/linux/memblock.h | 4 include/linux/memcontrol.h | 6 - include/linux/mm.h | 21 +++ include/linux/mm_types.h | 1 include/linux/sched/mm.h | 3 include/linux/stop_machine.h | 11 + init/Kconfig | 3 kernel/fork.c | 8 + lib/Kconfig.kasan | 1 mm/highmem.c | 17 ++ mm/huge_memory.c | 10 - mm/hugetlb.c | 123 +++++++++++++++------ mm/internal.h | 5 mm/kfence/report.c | 30 +++-- mm/madvise.c | 13 ++ mm/memcontrol.c | 15 +- mm/memory-failure.c | 4 mm/memory.c | 16 +- mm/page_alloc.c | 167 ++++++++++++++--------------- mm/slab.c | 2 29 files changed, 334 insertions(+), 216 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-02-26 1:14 Andrew Morton 2021-02-26 17:55 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-02-26 1:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - The rest of MM. Includes kfence - another runtime memory validator. Not as thorough as KASAN, but it has unmeasurable overhead and is intended to be usable in production builds. - Everything else 118 patches, based on 6fbd6cf85a3be127454a1ad58525a3adcf8612ab. Subsystems affected by this patch series: mm/thp mm/cma mm/vmstat mm/memory-hotplug mm/mlock mm/rmap mm/zswap mm/zsmalloc mm/cleanups mm/kfence mm/kasan2 alpha procfs sysctl misc core-kernel MAINTAINERS lib bitops checkpatch init coredump seq_file gdb ubsan initramfs mm/pagemap2 Subsystem: mm/thp "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Overhaul multi-page lookups for THP", v4: mm: make pagecache tagged lookups return only head pages mm/shmem: use pagevec_lookup in shmem_unlock_mapping mm/swap: optimise get_shadow_from_swap_cache mm: add FGP_ENTRY mm/filemap: rename find_get_entry to mapping_get_entry mm/filemap: add helper for finding pages mm/filemap: add mapping_seek_hole_data iomap: use mapping_seek_hole_data mm: add and use find_lock_entries mm: add an 'end' parameter to find_get_entries mm: add an 'end' parameter to pagevec_lookup_entries mm: remove nr_entries parameter from pagevec_lookup_entries mm: pass pvec directly to find_get_entries mm: remove pagevec_lookup_entries Rik van Riel <riel@surriel.com>: Patch series "mm,thp,shm: limit shmem THP alloc gfp_mask", v6: mm,thp,shmem: limit shmem THP alloc gfp_mask mm,thp,shm: limit gfp mask to no more than specified mm,thp,shmem: make khugepaged obey tmpfs mount flags mm,shmem,thp: limit shmem THP allocations to requested zones Subsystem: mm/cma Roman Gushchin <guro@fb.com>: mm: cma: allocate cma areas bottom-up David Hildenbrand <david@redhat.com>: mm/cma: expose all pages to the buddy if activation of an area fails mm/page_alloc: count CMA pages per zone and print them in /proc/zoneinfo Patrick Daly <pdaly@codeaurora.org>: mm: cma: print region name on failure Subsystem: mm/vmstat Johannes Weiner <hannes@cmpxchg.org>: mm: vmstat: fix NOHZ wakeups for node stat changes mm: vmstat: add some comments on internal storage of byte items Jiang Biao <benbjiang@tencent.com>: mm/vmstat.c: erase latency in vmstat_shepherd Subsystem: mm/memory-hotplug Dan Williams <dan.j.williams@intel.com>: Patch series "mm: Fix pfn_to_online_page() with respect to ZONE_DEVICE", v4: mm: move pfn_to_online_page() out of line mm: teach pfn_to_online_page() to consider subsection validity mm: teach pfn_to_online_page() about ZONE_DEVICE section collisions mm: fix memory_failure() handling of dax-namespace metadata Anshuman Khandual <anshuman.khandual@arm.com>: mm/memory_hotplug: rename all existing 'memhp' into 'mhp' David Hildenbrand <david@redhat.com>: mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE Miaohe Lin <linmiaohe@huawei.com>: mm/memory_hotplug: use helper function zone_end_pfn() to get end_pfn David Hildenbrand <david@redhat.com>: drivers/base/memory: don't store phys_device in memory blocks Documentation: sysfs/memory: clarify some memory block device properties Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/memory_hotplug: Pre-validate the address range with platform", v5: mm/memory_hotplug: prevalidate the address range being added with platform arm64/mm: define arch_get_mappable_range() s390/mm: define arch_get_mappable_range() David Hildenbrand <david@redhat.com>: virtio-mem: check against mhp_get_pluggable_range() which memory we can hotplug Subsystem: mm/mlock Miaohe Lin <linmiaohe@huawei.com>: mm/mlock: stop counting mlocked pages when none vma is found Subsystem: mm/rmap Miaohe Lin <linmiaohe@huawei.com>: mm/rmap: correct some obsolete comments of anon_vma mm/rmap: remove unneeded semicolon in page_not_mapped() mm/rmap: fix obsolete comment in __page_check_anon_rmap() mm/rmap: use page_not_mapped in try_to_unmap() mm/rmap: correct obsolete comment of page_get_anon_vma() mm/rmap: fix potential pte_unmap on an not mapped pte Subsystem: mm/zswap Randy Dunlap <rdunlap@infradead.org>: mm: zswap: clean up confusing comment Tian Tao <tiantao6@hisilicon.com>: Patch series "Fix the compatibility of zsmalloc and zswap": mm/zswap: add the flag can_sleep_mapped mm: set the sleep_mapped to true for zbud and z3fold Subsystem: mm/zsmalloc Miaohe Lin <linmiaohe@huawei.com>: mm/zsmalloc.c: convert to use kmem_cache_zalloc in cache_alloc_zspage() Rokudo Yan <wu-yan@tcl.com>: zsmalloc: account the number of compacted pages correctly Miaohe Lin <linmiaohe@huawei.com>: mm/zsmalloc.c: use page_private() to access page->private Subsystem: mm/cleanups Guo Ren <guoren@linux.alibaba.com>: mm: page-flags.h: Typo fix (It -> If) Daniel Vetter <daniel.vetter@ffwll.ch>: mm/dmapool: use might_alloc() mm/backing-dev.c: use might_alloc() Stephen Zhang <stephenzhangzsd@gmail.com>: mm/early_ioremap.c: use __func__ instead of function name Subsystem: mm/kfence Alexander Potapenko <glider@google.com>: Patch series "KFENCE: A low-overhead sampling-based memory safety error detector", v7: mm: add Kernel Electric-Fence infrastructure x86, kfence: enable KFENCE for x86 Marco Elver <elver@google.com>: arm64, kfence: enable KFENCE for ARM64 kfence: use pt_regs to generate stack trace on faults Alexander Potapenko <glider@google.com>: mm, kfence: insert KFENCE hooks for SLAB mm, kfence: insert KFENCE hooks for SLUB kfence, kasan: make KFENCE compatible with KASAN Marco Elver <elver@google.com>: kfence, Documentation: add KFENCE documentation kfence: add test suite MAINTAINERS: add entry for KFENCE kfence: report sensitive information based on no_hash_pointers Alexander Potapenko <glider@google.com>: Patch series "Add error_report_end tracepoint to KFENCE and KASAN", v3: tracing: add error_report_end trace point kfence: use error_report_end tracepoint kasan: use error_report_end tracepoint Subsystem: mm/kasan2 Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: optimizations and fixes for HW_TAGS", v4: kasan, mm: don't save alloc stacks twice kasan, mm: optimize kmalloc poisoning kasan: optimize large kmalloc poisoning kasan: clean up setting free info in kasan_slab_free kasan: unify large kfree checks kasan: rework krealloc tests kasan, mm: fail krealloc on freed objects kasan, mm: optimize krealloc poisoning kasan: ensure poisoning size alignment arm64: kasan: simplify and inline MTE functions kasan: inline HW_TAGS helper functions kasan: clarify that only first bug is reported in HW_TAGS Subsystem: alpha Randy Dunlap <rdunlap@infradead.org>: alpha: remove CONFIG_EXPERIMENTAL from defconfigs Subsystem: procfs Helge Deller <deller@gmx.de>: proc/wchan: use printk format instead of lookup_symbol_name() Josef Bacik <josef@toxicpanda.com>: proc: use kvzalloc for our kernel buffer Subsystem: sysctl Lin Feng <linf@wangsu.com>: sysctl.c: fix underflow value setting risk in vm_table Subsystem: misc Randy Dunlap <rdunlap@infradead.org>: include/linux: remove repeated words Miguel Ojeda <ojeda@kernel.org>: treewide: Miguel has moved Subsystem: core-kernel Hubert Jasudowicz <hubert.jasudowicz@gmail.com>: groups: use flexible-array member in struct group_info groups: simplify struct group_info allocation Randy Dunlap <rdunlap@infradead.org>: kernel: delete repeated words in comments Subsystem: MAINTAINERS Vlastimil Babka <vbabka@suse.cz>: MAINTAINERS: add uapi directories to API/ABI section Subsystem: lib Huang Shijie <sjhuang@iluvatar.ai>: lib/genalloc.c: change return type to unsigned long for bitmap_set_ll Francis Laniel <laniel_francis@privacyrequired.com>: string.h: move fortified functions definitions in a dedicated header. Yogesh Lal <ylal@codeaurora.org>: lib: stackdepot: add support to configure STACK_HASH_SIZE Vijayanand Jitta <vjitta@codeaurora.org>: lib: stackdepot: add support to disable stack depot lib: stackdepot: fix ignoring return value warning Masahiro Yamada <masahiroy@kernel.org>: lib/cmdline: remove an unneeded local variable in next_arg() Subsystem: bitops Geert Uytterhoeven <geert+renesas@glider.be>: include/linux/bitops.h: spelling s/synomyn/synonym/ Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: improve blank line after declaration test Peng Wang <rocking@linux.alibaba.com>: checkpatch: ignore warning designated initializers using NR_CPUS Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: trivial style fixes Joe Perches <joe@perches.com>: checkpatch: prefer ftrace over function entry/exit printks checkpatch: improve TYPECAST_INT_CONSTANT test message Aditya Srivastava <yashsri421@gmail.com>: checkpatch: add warning for avoiding .L prefix symbols in assembly files Joe Perches <joe@perches.com>: checkpatch: add kmalloc_array_node to unnecessary OOM message check Chris Down <chris@chrisdown.name>: checkpatch: don't warn about colon termination in linker scripts Song Liu <songliubraving@fb.com>: checkpatch: do not apply "initialise globals to 0" check to BPF progs Subsystem: init Masahiro Yamada <masahiroy@kernel.org>: init/version.c: remove Version_<LINUX_VERSION_CODE> symbol init: clean up early_param_on_off() macro Bhaskar Chowdhury <unixbhaskar@gmail.com>: init/Kconfig: fix a typo in CC_VERSION_TEXT help text Subsystem: coredump Ira Weiny <ira.weiny@intel.com>: fs/coredump: use kmap_local_page() Subsystem: seq_file NeilBrown <neilb@suse.de>: Patch series "Fix some seq_file users that were recently broken": seq_file: document how per-entry resources are managed. x86: fix seq_file iteration for pat/memtype.c Subsystem: gdb George Prekas <prekageo@amazon.com>: scripts/gdb: fix list_for_each Sumit Garg <sumit.garg@linaro.org>: kgdb: fix to kill breakpoints on initmem after boot Subsystem: ubsan Andrey Ryabinin <ryabinin.a.a@gmail.com>: ubsan: remove overflow checks Subsystem: initramfs Florian Fainelli <f.fainelli@gmail.com>: initramfs: panic with memory information Subsystem: mm/pagemap2 Huang Pei <huangpei@loongson.cn>: MIPS: make userspace mapping young by default .mailmap | 1 CREDITS | 9 Documentation/ABI/testing/sysfs-devices-memory | 58 - Documentation/admin-guide/auxdisplay/cfag12864b.rst | 2 Documentation/admin-guide/auxdisplay/ks0108.rst | 2 Documentation/admin-guide/kernel-parameters.txt | 6 Documentation/admin-guide/mm/memory-hotplug.rst | 20 Documentation/dev-tools/index.rst | 1 Documentation/dev-tools/kasan.rst | 8 Documentation/dev-tools/kfence.rst | 318 +++++++ Documentation/filesystems/seq_file.rst | 6 MAINTAINERS | 26 arch/alpha/configs/defconfig | 1 arch/arm64/Kconfig | 1 arch/arm64/include/asm/cache.h | 1 arch/arm64/include/asm/kasan.h | 1 arch/arm64/include/asm/kfence.h | 26 arch/arm64/include/asm/mte-def.h | 2 arch/arm64/include/asm/mte-kasan.h | 65 + arch/arm64/include/asm/mte.h | 2 arch/arm64/kernel/mte.c | 46 - arch/arm64/lib/mte.S | 16 arch/arm64/mm/fault.c | 8 arch/arm64/mm/mmu.c | 23 arch/mips/mm/cache.c | 30 arch/s390/mm/init.c | 1 arch/s390/mm/vmem.c | 14 arch/x86/Kconfig | 1 arch/x86/include/asm/kfence.h | 76 + arch/x86/mm/fault.c | 10 arch/x86/mm/pat/memtype.c | 4 drivers/auxdisplay/cfag12864b.c | 4 drivers/auxdisplay/cfag12864bfb.c | 4 drivers/auxdisplay/ks0108.c | 4 drivers/base/memory.c | 35 drivers/block/zram/zram_drv.c | 2 drivers/hv/hv_balloon.c | 2 drivers/virtio/virtio_mem.c | 43 drivers/xen/balloon.c | 2 fs/coredump.c | 4 fs/iomap/seek.c | 125 -- fs/proc/base.c | 21 fs/proc/proc_sysctl.c | 4 include/linux/bitops.h | 2 include/linux/cfag12864b.h | 2 include/linux/cred.h | 2 include/linux/fortify-string.h | 302 ++++++ include/linux/gfp.h | 2 include/linux/init.h | 4 include/linux/kasan.h | 25 include/linux/kfence.h | 230 +++++ include/linux/kgdb.h | 2 include/linux/khugepaged.h | 2 include/linux/ks0108.h | 2 include/linux/mdev.h | 2 include/linux/memory.h | 3 include/linux/memory_hotplug.h | 33 include/linux/memremap.h | 6 include/linux/mmzone.h | 49 - include/linux/page-flags.h | 4 include/linux/pagemap.h | 10 include/linux/pagevec.h | 10 include/linux/pgtable.h | 8 include/linux/ptrace.h | 2 include/linux/rmap.h | 3 include/linux/slab_def.h | 3 include/linux/slub_def.h | 3 include/linux/stackdepot.h | 9 include/linux/string.h | 282 ------ include/linux/vmstat.h | 6 include/linux/zpool.h | 3 include/linux/zsmalloc.h | 2 include/trace/events/error_report.h | 74 + include/uapi/linux/firewire-cdev.h | 2 include/uapi/linux/input.h | 2 init/Kconfig | 2 init/initramfs.c | 19 init/main.c | 6 init/version.c | 8 kernel/debug/debug_core.c | 11 kernel/events/core.c | 8 kernel/events/uprobes.c | 2 kernel/groups.c | 7 kernel/locking/rtmutex.c | 4 kernel/locking/rwsem.c | 2 kernel/locking/semaphore.c | 2 kernel/sched/fair.c | 2 kernel/sched/membarrier.c | 2 kernel/sysctl.c | 8 kernel/trace/Makefile | 1 kernel/trace/error_report-traces.c | 12 lib/Kconfig | 9 lib/Kconfig.debug | 1 lib/Kconfig.kfence | 84 + lib/Kconfig.ubsan | 17 lib/cmdline.c | 7 lib/genalloc.c | 3 lib/stackdepot.c | 41 lib/test_kasan.c | 111 ++ lib/test_ubsan.c | 49 - lib/ubsan.c | 68 - mm/Makefile | 1 mm/backing-dev.c | 3 mm/cma.c | 64 - mm/dmapool.c | 3 mm/early_ioremap.c | 12 mm/filemap.c | 361 +++++--- mm/huge_memory.c | 6 mm/internal.h | 6 mm/kasan/common.c | 213 +++- mm/kasan/generic.c | 3 mm/kasan/hw_tags.c | 2 mm/kasan/kasan.h | 97 +- mm/kasan/report.c | 8 mm/kasan/shadow.c | 78 + mm/kfence/Makefile | 6 mm/kfence/core.c | 875 +++++++++++++++++++- mm/kfence/kfence.h | 126 ++ mm/kfence/kfence_test.c | 860 +++++++++++++++++++ mm/kfence/report.c | 350 ++++++-- mm/khugepaged.c | 22 mm/memory-failure.c | 6 mm/memory.c | 4 mm/memory_hotplug.c | 178 +++- mm/memremap.c | 23 mm/mlock.c | 2 mm/page_alloc.c | 1 mm/rmap.c | 24 mm/shmem.c | 160 +-- mm/slab.c | 38 mm/slab_common.c | 29 mm/slub.c | 63 + mm/swap.c | 54 - mm/swap_state.c | 7 mm/truncate.c | 141 --- mm/vmstat.c | 35 mm/z3fold.c | 1 mm/zbud.c | 1 mm/zpool.c | 13 mm/zsmalloc.c | 22 mm/zswap.c | 57 + samples/auxdisplay/cfag12864b-example.c | 2 scripts/Makefile.ubsan | 2 scripts/checkpatch.pl | 152 ++- scripts/gdb/linux/lists.py | 5 145 files changed, 5046 insertions(+), 1682 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-26 1:14 incoming Andrew Morton @ 2021-02-26 17:55 ` Linus Torvalds 2021-02-26 19:16 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2021-02-26 17:55 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Thu, Feb 25, 2021 at 5:14 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - The rest of MM. > > Includes kfence - another runtime memory validator. Not as > thorough as KASAN, but it has unmeasurable overhead and is intended > to be usable in production builds. > > - Everything else Just to clarify: you have nothing else really pending? I'm hoping to just do -rc1 this weekend after all - despite my late start due to loss of power for several days. I'll allow late stragglers with good reason through, but the fewer of those there are, the better, of course. Thanks, Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-26 17:55 ` incoming Linus Torvalds @ 2021-02-26 19:16 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-02-26 19:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, Linux-MM On Fri, 26 Feb 2021 09:55:27 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Thu, Feb 25, 2021 at 5:14 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > - The rest of MM. > > > > Includes kfence - another runtime memory validator. Not as > > thorough as KASAN, but it has unmeasurable overhead and is intended > > to be usable in production builds. > > > > - Everything else > > Just to clarify: you have nothing else really pending? Yes, that's it from me for -rc1. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-02-24 19:58 Andrew Morton 2021-02-24 21:30 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-02-24 19:58 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits A few small subsystems and some of MM. 173 patches, based on c03c21ba6f4e95e406a1a7b4c34ef334b977c194. Subsystems affected by this patch series: hexagon scripts ntfs ocfs2 vfs mm/slab-generic mm/slab mm/slub mm/debug mm/pagecache mm/swap mm/memcg mm/pagemap mm/mprotect mm/mremap mm/page-reporting mm/vmalloc mm/kasan mm/pagealloc mm/memory-failure mm/hugetlb mm/vmscan mm/z3fold mm/compaction mm/mempolicy mm/oom-kill mm/hugetlbfs mm/migration Subsystem: hexagon Randy Dunlap <rdunlap@infradead.org>: hexagon: remove CONFIG_EXPERIMENTAL from defconfigs Subsystem: scripts tangchunyou <tangchunyou@yulong.com>: scripts/spelling.txt: increase error-prone spell checking zuoqilin <zuoqilin@yulong.com>: scripts/spelling.txt: check for "exeeds" dingsenjie <dingsenjie@yulong.com>: scripts/spelling.txt: add "allocted" and "exeeds" typo Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ntfs Randy Dunlap <rdunlap@infradead.org>: ntfs: layout.h: delete duplicated words Rustam Kovhaev <rkovhaev@gmail.com>: ntfs: check for valid standard information attribute Subsystem: ocfs2 Yi Li <yili@winhong.com>: ocfs2: remove redundant conditional before iput guozh <guozh88@chinatelecom.cn>: ocfs2: clean up some definitions which are not used any more Dan Carpenter <dan.carpenter@oracle.com>: ocfs2: fix a use after free on error Jiapeng Chong <jiapeng.chong@linux.alibaba.com>: ocfs2: simplify the calculation of variables Subsystem: vfs Randy Dunlap <rdunlap@infradead.org>: fs: delete repeated words in comments Alexey Dobriyan <adobriyan@gmail.com>: ramfs: support O_TMPFILE Subsystem: mm/slab-generic Jacob Wen <jian.w.wen@oracle.com>: mm, tracing: record slab name for kmem_cache_free() Nikolay Borisov <nborisov@suse.com>: mm/sl?b.c: remove ctor argument from kmem_cache_flags Subsystem: mm/slab Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/slab: minor coding style tweaks Subsystem: mm/slub Johannes Berg <johannes.berg@intel.com>: mm/slub: disable user tracing for kmemleak caches by default Vlastimil Babka <vbabka@suse.cz>: Patch series "mm, slab, slub: remove cpu and memory hotplug locks": mm, slub: stop freeing kmem_cache_node structures on node offline mm, slab, slub: stop taking memory hotplug lock mm, slab, slub: stop taking cpu hotplug lock mm, slub: splice cpu and page freelists in deactivate_slab() mm, slub: remove slub_memcg_sysfs boot param and CONFIG_SLUB_MEMCG_SYSFS_ON Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/slub: minor coding style tweaks Subsystem: mm/debug "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/debug: improve memcg debugging Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/debug_vm_pgtable: Some minor updates", v3: mm/debug_vm_pgtable/basic: add validation for dirtiness after write protect mm/debug_vm_pgtable/basic: iterate over entire protection_map[] Miaohe Lin <linmiaohe@huawei.com>: mm/page_owner: use helper function zone_end_pfn() to get end_pfn Subsystem: mm/pagecache Baolin Wang <baolin.wang@linux.alibaba.com>: mm/filemap: remove unused parameter and change to void type for replace_page_cache_page() Pavel Begunkov <asml.silence@gmail.com>: mm/filemap: don't revert iter on -EIOCBQUEUED "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Refactor generic_file_buffered_read", v5: mm/filemap: rename generic_file_buffered_read subfunctions mm/filemap: remove dynamically allocated array from filemap_read mm/filemap: convert filemap_get_pages to take a pagevec mm/filemap: use head pages in generic_file_buffered_read mm/filemap: pass a sleep state to put_and_wait_on_page_locked mm/filemap: support readpage splitting a page mm/filemap: inline __wait_on_page_locked_async into caller mm/filemap: don't call ->readpage if IOCB_WAITQ is set mm/filemap: change filemap_read_page calling conventions mm/filemap: change filemap_create_page calling conventions mm/filemap: convert filemap_update_page to return an errno mm/filemap: move the iocb checks into filemap_update_page mm/filemap: add filemap_range_uptodate mm/filemap: split filemap_readahead out of filemap_get_pages mm/filemap: restructure filemap_get_pages mm/filemap: don't relock the page after calling readpage Christoph Hellwig <hch@lst.de>: mm/filemap: rename generic_file_buffered_read to filemap_read mm/filemap: simplify generic_file_read_iter Yang Guo <guoyang2@huawei.com>: fs/buffer.c: add checking buffer head stat before clear Baolin Wang <baolin.wang@linux.alibaba.com>: mm: backing-dev: Remove duplicated macro definition Subsystem: mm/swap Yang Li <abaci-bugfix@linux.alibaba.com>: mm/swap_slots.c: remove redundant NULL check Stephen Zhang <stephenzhangzsd@gmail.com>: mm/swapfile.c: fix debugging information problem Georgi Djakov <georgi.djakov@linaro.org>: mm/page_io: use pr_alert_ratelimited for swap read/write errors Rikard Falkeborn <rikard.falkeborn@gmail.com>: mm/swap_state: constify static struct attribute_group Yu Zhao <yuzhao@google.com>: mm/swap: don't SetPageWorkingset unconditionally during swapin Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: memcg/slab: pre-allocate obj_cgroups for slab caches with SLAB_ACCOUNT Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: optimize per-lruvec stats counter memory usage Patch series "Convert all THP vmstat counters to pages", v6: mm: memcontrol: fix NR_ANON_THPS accounting in charge moving mm: memcontrol: convert NR_ANON_THPS account to pages mm: memcontrol: convert NR_FILE_THPS account to pages mm: memcontrol: convert NR_SHMEM_THPS account to pages mm: memcontrol: convert NR_SHMEM_PMDMAPPED account to pages mm: memcontrol: convert NR_FILE_PMDMAPPED account to pages mm: memcontrol: make the slab calculation consistent Alex Shi <alex.shi@linux.alibaba.com>: mm/memcg: revise the using condition of lock_page_lruvec function series mm/memcg: remove rcu locking for lock_page_lruvec function series Shakeel Butt <shakeelb@google.com>: mm: memcg: add swapcache stat for memcg v2 Roman Gushchin <guro@fb.com>: mm: kmem: make __memcg_kmem_(un)charge static Feng Tang <feng.tang@intel.com>: mm: page_counter: re-layout structure to reduce false sharing Yang Li <abaci-bugfix@linux.alibaba.com>: mm/memcontrol: remove redundant NULL check Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: replace the loop with a list_for_each_entry() Shakeel Butt <shakeelb@google.com>: mm/list_lru.c: remove kvfree_rcu_local() Johannes Weiner <hannes@cmpxchg.org>: fs: buffer: use raw page_memcg() on locked page Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: fix swap undercounting in cgroup2 mm: memcontrol: fix get_active_memcg return value mm: memcontrol: fix slub memory accounting Subsystem: mm/pagemap Adrian Huang <ahuang12@lenovo.com>: mm/mmap.c: remove unnecessary local variable Miaohe Lin <linmiaohe@huawei.com>: mm/memory.c: fix potential pte_unmap_unlock pte error mm/pgtable-generic.c: simplify the VM_BUG_ON condition in pmdp_huge_clear_flush() mm/pgtable-generic.c: optimize the VM_BUG_ON condition in pmdp_huge_clear_flush() mm/memory.c: fix potential pte_unmap_unlock pte error Subsystem: mm/mprotect Tianjia Zhang <tianjia.zhang@linux.alibaba.com>: mm/mprotect.c: optimize error detection in do_mprotect_pkey() Subsystem: mm/mremap Li Xinhai <lixinhai.lxh@gmail.com>: mm: rmap: explicitly reset vma->anon_vma in unlink_anon_vmas() mm: mremap: unlink anon_vmas when mremap with MREMAP_DONTUNMAP success Subsystem: mm/page-reporting sh <sh_def@163.com>: mm/page_reporting: use list_entry_is_head() in page_reporting_cycle() Subsystem: mm/vmalloc Yang Li <abaci-bugfix@linux.alibaba.com>: vmalloc: remove redundant NULL check Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: HW_TAGS tests support and fixes", v4: kasan: prefix global functions with kasan_ kasan: clarify HW_TAGS impact on TBI kasan: clean up comments in tests kasan: add macros to simplify checking test constraints kasan: add match-all tag tests kasan, arm64: allow using KUnit tests with HW_TAGS mode kasan: rename CONFIG_TEST_KASAN_MODULE kasan: add compiler barriers to KUNIT_EXPECT_KASAN_FAIL kasan: adapt kmalloc_uaf2 test to HW_TAGS mode kasan: fix memory corruption in kasan_bitops_tags test kasan: move _RET_IP_ to inline wrappers kasan: fix bug detection via ksize for HW_TAGS mode kasan: add proper page allocator tests kasan: add a test for kmem_cache_alloc/free_bulk kasan: don't run tests when KASAN is not enabled Walter Wu <walter-zh.wu@mediatek.com>: kasan: remove redundant config option Subsystem: mm/pagealloc Baoquan He <bhe@redhat.com>: Patch series "mm: clean up names and parameters of memmap_init_xxxx functions", v5: mm: fix prototype warning from kernel test robot mm: rename memmap_init() and memmap_init_zone() mm: simplify parater of function memmap_init_zone() mm: simplify parameter of setup_usemap() mm: remove unneeded local variable in free_area_init_core David Hildenbrand <david@redhat.com>: Patch series "mm: simplify free_highmem_page() and free_reserved_page()": video: fbdev: acornfb: remove free_unused_pages() mm: simplify free_highmem_page() and free_reserved_page() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/gfp: add kernel-doc for gfp_t Subsystem: mm/memory-failure Aili Yao <yaoaili@kingsoft.com>: mm,hwpoison: send SIGBUS to PF_MCE_EARLY processes on action required events Subsystem: mm/hugetlb Bibo Mao <maobibo@loongson.cn>: mm/huge_memory.c: update tlb entry if pmd is changed MIPS: do not call flush_tlb_all when setting pmd entry Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: fix potential double free in hugetlb_register_node() error path Li Xinhai <lixinhai.lxh@gmail.com>: mm/hugetlb.c: fix unnecessary address expansion of pmd sharing Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: avoid unnecessary hugetlb_acct_memory() call mm/hugetlb: use helper huge_page_order and pages_per_huge_page mm/hugetlb: fix use after free when subpool max_hpages accounting is not enabled Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>: mm/hugetlb: simplify the calculation of variables Joao Martins <joao.m.martins@oracle.com>: Patch series "mm/hugetlb: follow_hugetlb_page() improvements", v2: mm/hugetlb: grab head page refcount once for group of subpages mm/hugetlb: refactor subpage recording Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: fix some comment typos Yanfei Xu <yanfei.xu@windriver.com>: mm/hugetlb: remove redundant check in preparing and destroying gigantic page Zhiyuan Dai <daizhiyuan@phytium.com.cn>: mm/hugetlb.c: fix typos in comments Miaohe Lin <linmiaohe@huawei.com>: mm/huge_memory.c: remove unused return value of set_huge_zero_page() "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/pmem: avoid inserting hugepage PTE entry with fsdax if hugepage support is disabled Miaohe Lin <linmiaohe@huawei.com>: hugetlb_cgroup: use helper pages_per_huge_page() in hugetlb_cgroup mm/hugetlb: use helper function range_in_vma() in page_table_shareable() mm/hugetlb: remove unnecessary VM_BUG_ON_PAGE on putback_active_hugepage() mm/hugetlb: use helper huge_page_size() to get hugepage size Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: fix update_and_free_page contig page struct assumption hugetlb: fix copy_huge_page_from_user contig page struct assumption Chen Wandun <chenwandun@huawei.com>: mm/hugetlb: suppress wrong warning info when alloc gigantic page Subsystem: mm/vmscan Alex Shi <alex.shi@linux.alibaba.com>: mm/vmscan: __isolate_lru_page_prepare() cleanup Miaohe Lin <linmiaohe@huawei.com>: mm/workingset.c: avoid unnecessary max_nodes estimation in count_shadow_nodes() Yu Zhao <yuzhao@google.com>: Patch series "mm: lru related cleanups", v2: mm/vmscan.c: use add_page_to_lru_list() include/linux/mm_inline.h: shuffle lru list addition and deletion functions mm: don't pass "enum lru_list" to lru list addition functions mm/swap.c: don't pass "enum lru_list" to trace_mm_lru_insertion() mm/swap.c: don't pass "enum lru_list" to del_page_from_lru_list() mm: add __clear_page_lru_flags() to replace page_off_lru() mm: VM_BUG_ON lru page flags include/linux/mm_inline.h: fold page_lru_base_type() into its sole caller include/linux/mm_inline.h: fold __update_lru_size() into its sole caller mm/vmscan.c: make lruvec_lru_size() static Oscar Salvador <osalvador@suse.de>: mm: workingset: clarify eviction order and distance calculation Mike Kravetz <mike.kravetz@oracle.com>: Patch series "create hugetlb flags to consolidate state", v3: hugetlb: use page.private for hugetlb specific page flags hugetlb: convert page_huge_active() HPageMigratable flag hugetlb: convert PageHugeTemporary() to HPageTemporary flag hugetlb: convert PageHugeFreed to HPageFreed flag include/linux/hugetlb.h: add synchronization information for new hugetlb specific flags hugetlb: fix uninitialized subpool pointer Dave Hansen <dave.hansen@linux.intel.com>: mm/vmscan: restore zone_reclaim_mode ABI Subsystem: mm/z3fold Miaohe Lin <linmiaohe@huawei.com>: z3fold: remove unused attribute for release_z3fold_page z3fold: simplify the zhdr initialization code in init_z3fold_page() Subsystem: mm/compaction Alex Shi <alex.shi@linux.alibaba.com>: mm/compaction: remove rcu_read_lock during page compaction Miaohe Lin <linmiaohe@huawei.com>: mm/compaction: remove duplicated VM_BUG_ON_PAGE !PageLocked Charan Teja Reddy <charante@codeaurora.org>: mm/compaction: correct deferral logic for proactive compaction Wonhyuk Yang <vvghjk1234@gmail.com>: mm/compaction: fix misbehaviors of fast_find_migrateblock() Vlastimil Babka <vbabka@suse.cz>: mm, compaction: make fast_isolate_freepages() stay within zone Subsystem: mm/mempolicy Huang Ying <ying.huang@intel.com>: numa balancing: migrate on fault among multiple bound nodes Miaohe Lin <linmiaohe@huawei.com>: mm/mempolicy: use helper range_in_vma() in queue_pages_test_walk() Subsystem: mm/oom-kill Tang Yizhou <tangyizhou@huawei.com>: mm, oom: fix a comment in dump_task() Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: mm/hugetlb: change hugetlb_reserve_pages() to type bool hugetlbfs: remove special hugetlbfs_set_page_dirty() Miaohe Lin <linmiaohe@huawei.com>: hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr() hugetlbfs: use helper macro default_hstate in init_hugetlbfs_fs hugetlbfs: correct obsolete function name in hugetlbfs_read_iter() hugetlbfs: remove meaningless variable avoid_reserve hugetlbfs: make hugepage size conversion more readable hugetlbfs: correct some obsolete comments about inode i_mutex hugetlbfs: fix some comment typos hugetlbfs: remove unneeded return value of hugetlb_vmtruncate() Subsystem: mm/migration Chengyang Fan <cy.fan@huawei.com>: mm/migrate: remove unneeded semicolons Documentation/admin-guide/cgroup-v2.rst | 4 Documentation/admin-guide/kernel-parameters.txt | 8 Documentation/admin-guide/sysctl/vm.rst | 10 Documentation/core-api/mm-api.rst | 7 Documentation/dev-tools/kasan.rst | 24 Documentation/vm/arch_pgtable_helpers.rst | 8 arch/arm64/include/asm/memory.h | 1 arch/arm64/include/asm/mte-kasan.h | 12 arch/arm64/kernel/mte.c | 12 arch/arm64/kernel/sleep.S | 2 arch/arm64/mm/fault.c | 20 arch/hexagon/configs/comet_defconfig | 1 arch/ia64/include/asm/pgtable.h | 6 arch/ia64/mm/init.c | 18 arch/mips/mm/pgtable-32.c | 1 arch/mips/mm/pgtable-64.c | 1 arch/x86/kernel/acpi/wakeup_64.S | 2 drivers/base/node.c | 33 drivers/video/fbdev/acornfb.c | 34 fs/block_dev.c | 2 fs/btrfs/file.c | 2 fs/buffer.c | 7 fs/dcache.c | 4 fs/direct-io.c | 4 fs/exec.c | 4 fs/fhandle.c | 2 fs/fuse/dev.c | 6 fs/hugetlbfs/inode.c | 72 -- fs/ntfs/inode.c | 6 fs/ntfs/layout.h | 4 fs/ocfs2/cluster/heartbeat.c | 8 fs/ocfs2/dlm/dlmast.c | 10 fs/ocfs2/dlm/dlmcommon.h | 4 fs/ocfs2/refcounttree.c | 2 fs/ocfs2/super.c | 2 fs/pipe.c | 2 fs/proc/meminfo.c | 10 fs/proc/vmcore.c | 7 fs/ramfs/inode.c | 13 include/linux/fs.h | 4 include/linux/gfp.h | 14 include/linux/highmem-internal.h | 5 include/linux/huge_mm.h | 15 include/linux/hugetlb.h | 98 ++ include/linux/kasan-checks.h | 6 include/linux/kasan.h | 39 - include/linux/memcontrol.h | 43 - include/linux/migrate.h | 2 include/linux/mm.h | 28 include/linux/mm_inline.h | 123 +-- include/linux/mmzone.h | 30 include/linux/page-flags.h | 6 include/linux/page_counter.h | 9 include/linux/pagemap.h | 5 include/linux/swap.h | 8 include/trace/events/kmem.h | 24 include/trace/events/pagemap.h | 11 include/uapi/linux/mempolicy.h | 4 init/Kconfig | 14 lib/Kconfig.kasan | 14 lib/Makefile | 2 lib/test_kasan.c | 446 ++++++++---- lib/test_kasan_module.c | 5 mm/backing-dev.c | 6 mm/compaction.c | 73 +- mm/debug.c | 10 mm/debug_vm_pgtable.c | 86 ++ mm/filemap.c | 859 +++++++++++------------- mm/gup.c | 5 mm/huge_memory.c | 28 mm/hugetlb.c | 376 ++++------ mm/hugetlb_cgroup.c | 6 mm/kasan/common.c | 60 - mm/kasan/generic.c | 40 - mm/kasan/hw_tags.c | 16 mm/kasan/kasan.h | 87 +- mm/kasan/quarantine.c | 22 mm/kasan/report.c | 15 mm/kasan/report_generic.c | 10 mm/kasan/report_hw_tags.c | 8 mm/kasan/report_sw_tags.c | 8 mm/kasan/shadow.c | 27 mm/kasan/sw_tags.c | 22 mm/khugepaged.c | 6 mm/list_lru.c | 12 mm/memcontrol.c | 309 ++++---- mm/memory-failure.c | 34 mm/memory.c | 24 mm/memory_hotplug.c | 11 mm/mempolicy.c | 18 mm/mempool.c | 2 mm/migrate.c | 10 mm/mlock.c | 3 mm/mmap.c | 4 mm/mprotect.c | 7 mm/mremap.c | 8 mm/oom_kill.c | 5 mm/page_alloc.c | 70 - mm/page_io.c | 12 mm/page_owner.c | 4 mm/page_reporting.c | 2 mm/pgtable-generic.c | 9 mm/rmap.c | 35 mm/shmem.c | 2 mm/slab.c | 21 mm/slab.h | 20 mm/slab_common.c | 40 - mm/slob.c | 2 mm/slub.c | 169 ++-- mm/swap.c | 54 - mm/swap_slots.c | 3 mm/swap_state.c | 31 mm/swapfile.c | 8 mm/vmscan.c | 100 +- mm/vmstat.c | 14 mm/workingset.c | 7 mm/z3fold.c | 11 scripts/Makefile.kasan | 10 scripts/spelling.txt | 30 tools/objtool/check.c | 2 120 files changed, 2249 insertions(+), 1954 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-24 19:58 incoming Andrew Morton @ 2021-02-24 21:30 ` Linus Torvalds 2021-02-24 21:37 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2021-02-24 21:30 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Wed, Feb 24, 2021 at 11:58 AM Andrew Morton <akpm@linux-foundation.org> wrote: > > A few small subsystems and some of MM. Hmm. I haven't bisected things yet, but I suspect it's something with the KASAN patches. With this all applied, I get: lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] and lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is larger than 2048 bytes [-Wframe-larger-than=] which is obviously not really acceptable. A 11kB stack frame _will_ cause issues. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-24 21:30 ` incoming Linus Torvalds @ 2021-02-24 21:37 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-02-24 21:37 UTC (permalink / raw) To: Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov Cc: Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Hmm. I haven't bisected things yet, but I suspect it's something with > the KASAN patches. With this all applied, I get: > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > and > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > larger than 2048 bytes [-Wframe-larger-than=] > > which is obviously not really acceptable. A 11kB stack frame _will_ > cause issues. A quick bisect shoes that this was introduced by "[patch 101/173] kasan: remove redundant config option". I didn't check what part of that patch screws up, but it's definitely doing something bad. I will drop that patch. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2021-02-24 21:37 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-02-24 21:37 UTC (permalink / raw) To: Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov Cc: Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Hmm. I haven't bisected things yet, but I suspect it's something with > the KASAN patches. With this all applied, I get: > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > and > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > larger than 2048 bytes [-Wframe-larger-than=] > > which is obviously not really acceptable. A 11kB stack frame _will_ > cause issues. A quick bisect shoes that this was introduced by "[patch 101/173] kasan: remove redundant config option". I didn't check what part of that patch screws up, but it's definitely doing something bad. I will drop that patch. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-24 21:37 ` incoming Linus Torvalds @ 2021-02-25 8:53 ` Arnd Bergmann -1 siblings, 0 replies; 530+ messages in thread From: Arnd Bergmann @ 2021-02-25 8:53 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov, Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Wed, Feb 24, 2021 at 10:37 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > Hmm. I haven't bisected things yet, but I suspect it's something with > > the KASAN patches. With this all applied, I get: > > > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > > > and > > > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > > larger than 2048 bytes [-Wframe-larger-than=] > > > > which is obviously not really acceptable. A 11kB stack frame _will_ > > cause issues. > > A quick bisect shoes that this was introduced by "[patch 101/173] > kasan: remove redundant config option". > > I didn't check what part of that patch screws up, but it's definitely > doing something bad. I'm not sure why that patch surfaced the bug, but it's worth pointing out that the underlying problem is asan-stack in combination with the structleak plugin. This will happen for every user of kunit. I sent a series[1] out earlier this year to turn off the structleak plugin as an alternative workaround, but need to follow up on the remaining patches. Someone suggested adding a more generic way to turn off the plugin for a file instead of open-coding the CLFAGS_REMOVE_*.o Makefile bit, which would help. I am also still hoping that someone can come up with a way to make kunit work better with the structleak plugin, as there shouldn't be a fundamental reason why it can't work, just that it the code pattern triggers a particularly bad case in the compiler. Arnd [1] https://lore.kernel.org/lkml/20210125124533.101339-1-arnd@kernel.org/ ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2021-02-25 8:53 ` Arnd Bergmann 0 siblings, 0 replies; 530+ messages in thread From: Arnd Bergmann @ 2021-02-25 8:53 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov, Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Wed, Feb 24, 2021 at 10:37 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > Hmm. I haven't bisected things yet, but I suspect it's something with > > the KASAN patches. With this all applied, I get: > > > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > > > and > > > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > > larger than 2048 bytes [-Wframe-larger-than=] > > > > which is obviously not really acceptable. A 11kB stack frame _will_ > > cause issues. > > A quick bisect shoes that this was introduced by "[patch 101/173] > kasan: remove redundant config option". > > I didn't check what part of that patch screws up, but it's definitely > doing something bad. I'm not sure why that patch surfaced the bug, but it's worth pointing out that the underlying problem is asan-stack in combination with the structleak plugin. This will happen for every user of kunit. I sent a series[1] out earlier this year to turn off the structleak plugin as an alternative workaround, but need to follow up on the remaining patches. Someone suggested adding a more generic way to turn off the plugin for a file instead of open-coding the CLFAGS_REMOVE_*.o Makefile bit, which would help. I am also still hoping that someone can come up with a way to make kunit work better with the structleak plugin, as there shouldn't be a fundamental reason why it can't work, just that it the code pattern triggers a particularly bad case in the compiler. Arnd [1] https://lore.kernel.org/lkml/20210125124533.101339-1-arnd@kernel.org/ ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-25 8:53 ` incoming Arnd Bergmann @ 2021-02-25 9:12 ` Andrey Ryabinin -1 siblings, 0 replies; 530+ messages in thread From: Andrey Ryabinin @ 2021-02-25 9:12 UTC (permalink / raw) To: Arnd Bergmann Cc: Linus Torvalds, Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov, Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Thu, Feb 25, 2021 at 11:53 AM Arnd Bergmann <arnd@kernel.org> wrote: > > On Wed, Feb 24, 2021 at 10:37 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds > > <torvalds@linux-foundation.org> wrote: > > > > > > Hmm. I haven't bisected things yet, but I suspect it's something with > > > the KASAN patches. With this all applied, I get: > > > > > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > > > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > > > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > > > > > and > > > > > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > > > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > > > larger than 2048 bytes [-Wframe-larger-than=] > > > > > > which is obviously not really acceptable. A 11kB stack frame _will_ > > > cause issues. > > > > A quick bisect shoes that this was introduced by "[patch 101/173] > > kasan: remove redundant config option". > > > > I didn't check what part of that patch screws up, but it's definitely > > doing something bad. > > I'm not sure why that patch surfaced the bug, but it's worth pointing > out that the underlying problem is asan-stack in combination > with the structleak plugin. This will happen for every user of kunit. > The patch didn't update KASAN_STACK dependency in kconfig: config GCC_PLUGIN_STRUCTLEAK_BYREF .... depends on !(KASAN && KASAN_STACK=1) This 'depends on' stopped working with the patch ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2021-02-25 9:12 ` Andrey Ryabinin 0 siblings, 0 replies; 530+ messages in thread From: Andrey Ryabinin @ 2021-02-25 9:12 UTC (permalink / raw) To: Arnd Bergmann Cc: Linus Torvalds, Andrew Morton, Walter Wu, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov, Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko On Thu, Feb 25, 2021 at 11:53 AM Arnd Bergmann <arnd@kernel.org> wrote: > > On Wed, Feb 24, 2021 at 10:37 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds > > <torvalds@linux-foundation.org> wrote: > > > > > > Hmm. I haven't bisected things yet, but I suspect it's something with > > > the KASAN patches. With this all applied, I get: > > > > > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > > > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > > > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > > > > > and > > > > > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > > > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > > > larger than 2048 bytes [-Wframe-larger-than=] > > > > > > which is obviously not really acceptable. A 11kB stack frame _will_ > > > cause issues. > > > > A quick bisect shoes that this was introduced by "[patch 101/173] > > kasan: remove redundant config option". > > > > I didn't check what part of that patch screws up, but it's definitely > > doing something bad. > > I'm not sure why that patch surfaced the bug, but it's worth pointing > out that the underlying problem is asan-stack in combination > with the structleak plugin. This will happen for every user of kunit. > The patch didn't update KASAN_STACK dependency in kconfig: config GCC_PLUGIN_STRUCTLEAK_BYREF .... depends on !(KASAN && KASAN_STACK=1) This 'depends on' stopped working with the patch ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-25 9:12 ` incoming Andrey Ryabinin (?) @ 2021-02-25 11:07 ` Walter Wu -1 siblings, 0 replies; 530+ messages in thread From: Walter Wu @ 2021-02-25 11:07 UTC (permalink / raw) To: Andrey Ryabinin Cc: Arnd Bergmann, Linus Torvalds, Andrew Morton, Dmitry Vyukov, Nathan Chancellor, Arnd Bergmann, Andrey Konovalov, Linux-MM, mm-commits, Andrey Ryabinin, Alexander Potapenko Hi Andrey, On Thu, 2021-02-25 at 12:12 +0300, Andrey Ryabinin wrote: > On Thu, Feb 25, 2021 at 11:53 AM Arnd Bergmann <arnd@kernel.org> wrote: > > > > On Wed, Feb 24, 2021 at 10:37 PM Linus Torvalds > > <torvalds@linux-foundation.org> wrote: > > > > > > On Wed, Feb 24, 2021 at 1:30 PM Linus Torvalds > > > <torvalds@linux-foundation.org> wrote: > > > > > > > > Hmm. I haven't bisected things yet, but I suspect it's something with > > > > the KASAN patches. With this all applied, I get: > > > > > > > > lib/crypto/curve25519-hacl64.c: In function ‘ladder_cmult.constprop’: > > > > lib/crypto/curve25519-hacl64.c:601:1: warning: the frame size of > > > > 2288 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > > > > > > > and > > > > > > > > lib/bitfield_kunit.c: In function ‘test_bitfields_constants’: > > > > lib/bitfield_kunit.c:93:1: warning: the frame size of 11200 bytes is > > > > larger than 2048 bytes [-Wframe-larger-than=] > > > > > > > > which is obviously not really acceptable. A 11kB stack frame _will_ > > > > cause issues. > > > > > > A quick bisect shoes that this was introduced by "[patch 101/173] > > > kasan: remove redundant config option". > > > > > > I didn't check what part of that patch screws up, but it's definitely > > > doing something bad. > > > > I'm not sure why that patch surfaced the bug, but it's worth pointing > > out that the underlying problem is asan-stack in combination > > with the structleak plugin. This will happen for every user of kunit. > > > > The patch didn't update KASAN_STACK dependency in kconfig: > config GCC_PLUGIN_STRUCTLEAK_BYREF > .... > depends on !(KASAN && KASAN_STACK=1) > > This 'depends on' stopped working with the patch Thanks for pointing out this problem. I will re-send that patch. Walter ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-02-13 4:52 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-02-13 4:52 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 6 patches, based on dcc0b49040c70ad827a7f3d58a21b01fdb14e749. Subsystems affected by this patch series: mm/pagemap scripts MAINTAINERS h8300 Subsystem: mm/pagemap Mike Rapoport <rppt@linux.ibm.com>: m68k: make __pfn_to_phys() and __phys_to_pfn() available for !MMU Subsystem: scripts Rong Chen <rong.a.chen@intel.com>: scripts/recordmcount.pl: support big endian for ARCH sh Subsystem: MAINTAINERS Andrey Konovalov <andreyknvl@google.com>: MAINTAINERS: update KASAN file list MAINTAINERS: update Andrey Konovalov's email address MAINTAINERS: add Andrey Konovalov to KASAN reviewers Subsystem: h8300 Randy Dunlap <rdunlap@infradead.org>: h8300: fix PREEMPTION build, TI_PRE_COUNT undefined MAINTAINERS | 8 +++++--- arch/h8300/kernel/asm-offsets.c | 3 +++ arch/m68k/include/asm/page.h | 2 +- scripts/recordmcount.pl | 6 +++++- 4 files changed, 14 insertions(+), 5 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-02-09 21:41 Andrew Morton 2021-02-10 19:30 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-02-09 21:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 14 patches, based on e0756cfc7d7cd08c98a53b6009c091a3f6a50be6. Subsystems affected by this patch series: squashfs mm/kasan firmware mm/mremap mm/tmpfs mm/selftests MAINTAINERS mm/memcg mm/slub nilfs2 Subsystem: squashfs Phillip Lougher <phillip@squashfs.org.uk>: Patch series "Squashfs: fix BIO migration regression and add sanity checks": squashfs: avoid out of bounds writes in decompressors squashfs: add more sanity checks in id lookup squashfs: add more sanity checks in inode lookup squashfs: add more sanity checks in xattr id lookup Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: fix stack traces dependency for HW_TAGS Subsystem: firmware Fangrui Song <maskray@google.com>: firmware_loader: align .builtin_fw to 8 Subsystem: mm/mremap Arnd Bergmann <arnd@arndb.de>: mm/mremap: fix BUILD_BUG_ON() error in get_extent Subsystem: mm/tmpfs Seth Forshee <seth.forshee@canonical.com>: tmpfs: disallow CONFIG_TMPFS_INODE64 on s390 tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha Subsystem: mm/selftests Rong Chen <rong.a.chen@intel.com>: selftests/vm: rename file run_vmtests to run_vmtests.sh Subsystem: MAINTAINERS Andrey Ryabinin <ryabinin.a.a@gmail.com>: MAINTAINERS: update Andrey Ryabinin's email address Subsystem: mm/memcg Johannes Weiner <hannes@cmpxchg.org>: Revert "mm: memcontrol: avoid workload stalls when lowering memory.high" Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: mm, slub: better heuristic for number of cpus when calculating slab order Subsystem: nilfs2 Joachim Henke <joachim.henke@t-systems.com>: nilfs2: make splice write available again .mailmap | 1 Documentation/dev-tools/kasan.rst | 3 - MAINTAINERS | 2 - fs/Kconfig | 4 +- fs/nilfs2/file.c | 1 fs/squashfs/block.c | 8 ++++ fs/squashfs/export.c | 41 +++++++++++++++++++---- fs/squashfs/id.c | 40 ++++++++++++++++++----- fs/squashfs/squashfs_fs_sb.h | 1 fs/squashfs/super.c | 6 +-- fs/squashfs/xattr.h | 10 +++++ fs/squashfs/xattr_id.c | 66 ++++++++++++++++++++++++++++++++------ include/asm-generic/vmlinux.lds.h | 2 - mm/kasan/hw_tags.c | 8 +--- mm/memcontrol.c | 5 +- mm/mremap.c | 5 +- mm/slub.c | 18 +++++++++- 17 files changed, 172 insertions(+), 49 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-02-09 21:41 incoming Andrew Morton @ 2021-02-10 19:30 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-02-10 19:30 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits Hah. This series shows a small deficiency in your scripting wrt the diffstat: On Tue, Feb 9, 2021 at 1:41 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > .mailmap | 1 ... > mm/slub.c | 18 +++++++++- > 17 files changed, 172 insertions(+), 49 deletions(-) It actually has 18 files changed, but one of them is a pure rename (no change to the content), and apparently your diffstat tool can't handle that case. It *should* have ended with ... mm/slub.c | 18 +++++- .../selftests/vm/{run_vmtests => run_vmtests.sh} | 0 18 files changed, 172 insertions(+), 49 deletions(-) rename tools/testing/selftests/vm/{run_vmtests => run_vmtests.sh} (100%) if you'd done a proper "git diff -M --stat --summary" of the series. [ Ok, by default git would actually have said 18 files changed, 171 insertions(+), 48 deletions(-) but it looks like you use the patience diff option, which gives that extra insertion/deletion line because it generates the diff a bit differently ] Not a big deal,, but it made me briefly wonder "why doesn't my diffstat match yours". Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-02-05 2:31 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-02-05 2:31 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 18 patches, based on 5c279c4cf206e03995e04fd3404fa95ffd243a97. Subsystems affected by this patch series: mm/hugetlb mm/compaction mm/vmalloc gcov mm/shmem mm/memblock mailmap mm/pagecache mm/kasan ubsan mm/hugetlb MAINTAINERS Subsystem: mm/hugetlb Muchun Song <songmuchun@bytedance.com>: mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page mm: hugetlb: fix a race between freeing and dissolving the page mm: hugetlb: fix a race between isolating and freeing page mm: hugetlb: remove VM_BUG_ON_PAGE from page_huge_active mm: migrate: do not migrate HugeTLB page whose refcount is one Subsystem: mm/compaction Rokudo Yan <wu-yan@tcl.com>: mm, compaction: move high_pfn to the for loop scope Subsystem: mm/vmalloc Rick Edgecombe <rick.p.edgecombe@intel.com>: mm/vmalloc: separate put pages and flush VM flags Subsystem: gcov Johannes Berg <johannes.berg@intel.com>: init/gcov: allow CONFIG_CONSTRUCTORS on UML to fix module gcov Subsystem: mm/shmem Hugh Dickins <hughd@google.com>: mm: thp: fix MADV_REMOVE deadlock on shmem THP Subsystem: mm/memblock Roman Gushchin <guro@fb.com>: memblock: do not start bottom-up allocations with kernel_end Subsystem: mailmap Viresh Kumar <viresh.kumar@linaro.org>: mailmap: fix name/email for Viresh Kumar Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>: mailmap: add entries for Manivannan Sadhasivam Subsystem: mm/pagecache Waiman Long <longman@redhat.com>: mm/filemap: add missing mem_cgroup_uncharge() to __add_to_page_cache_locked() Subsystem: mm/kasan Vincenzo Frascino <vincenzo.frascino@arm.com>: Patch series "kasan: Fix metadata detection for KASAN_HW_TAGS", v5: kasan: add explicit preconditions to kasan_report() kasan: make addr_has_metadata() return true for valid addresses Subsystem: ubsan Nathan Chancellor <nathan@kernel.org>: ubsan: implement __ubsan_handle_alignment_assumption Subsystem: mm/hugetlb Muchun Song <songmuchun@bytedance.com>: mm: hugetlb: fix missing put_page in gather_surplus_pages() Subsystem: MAINTAINERS Nathan Chancellor <nathan@kernel.org>: MAINTAINERS/.mailmap: use my @kernel.org address .mailmap | 5 ++++ MAINTAINERS | 2 - fs/hugetlbfs/inode.c | 3 +- include/linux/hugetlb.h | 2 + include/linux/kasan.h | 7 ++++++ include/linux/vmalloc.h | 9 +------- init/Kconfig | 1 init/main.c | 8 ++++++- kernel/gcov/Kconfig | 2 - lib/ubsan.c | 31 ++++++++++++++++++++++++++++ lib/ubsan.h | 6 +++++ mm/compaction.c | 3 +- mm/filemap.c | 4 +++ mm/huge_memory.c | 37 ++++++++++++++++++++------------- mm/hugetlb.c | 53 ++++++++++++++++++++++++++++++++++++++++++------ mm/kasan/kasan.h | 2 - mm/memblock.c | 49 +++++--------------------------------------- mm/migrate.c | 6 +++++ 18 files changed, 153 insertions(+), 77 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-01-24 5:00 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2021-01-24 5:00 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 19 patches, based on e1ae4b0be15891faf46d390e9f3dc9bd71a8cae1. Subsystems affected by this patch series: mm/pagealloc mm/memcg mm/kasan ubsan mm/memory-failure mm/highmem proc MAINTAINERS Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: fix initialization of struct page for holes in memory layout", v3: x86/setup: don't remove E820_TYPE_RAM for pfn 0 mm: fix initialization of struct page for holes in memory layout Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: memcg/slab: optimize objcg stock draining Shakeel Butt <shakeelb@google.com>: mm: memcg: fix memcg file_dirty numa stat mm: fix numa stats for thp migration Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: prevent starvation when writing memory.high Subsystem: mm/kasan Lecopzer Chen <lecopzer@gmail.com>: kasan: fix unaligned address is unhandled in kasan_remove_zero_shadow kasan: fix incorrect arguments passing in kasan_add_zero_shadow Andrey Konovalov <andreyknvl@google.com>: kasan: fix HW_TAGS boot parameters kasan, mm: fix conflicts with init_on_alloc/free kasan, mm: fix resetting page_alloc tags for HW_TAGS Subsystem: ubsan Arnd Bergmann <arnd@arndb.de>: ubsan: disable unsigned-overflow check for i386 Subsystem: mm/memory-failure Dan Williams <dan.j.williams@intel.com>: mm: fix page reference leak in soft_offline_page() Subsystem: mm/highmem Thomas Gleixner <tglx@linutronix.de>: Patch series "mm/highmem: Fix fallout from generic kmap_local conversions": sparc/mm/highmem: flush cache and TLB mm/highmem: prepare for overriding set_pte_at() mips/mm/highmem: use set_pte() for kmap_local() powerpc/mm/highmem: use __set_pte_at() for kmap_local() Subsystem: proc Xiaoming Ni <nixiaoming@huawei.com>: proc_sysctl: fix oops caused by incorrect command parameters Subsystem: MAINTAINERS Nathan Chancellor <natechancellor@gmail.com>: MAINTAINERS: add a couple more files to the Clang/LLVM section Documentation/dev-tools/kasan.rst | 27 ++--------- MAINTAINERS | 2 arch/mips/include/asm/highmem.h | 1 arch/powerpc/include/asm/highmem.h | 2 arch/sparc/include/asm/highmem.h | 9 ++- arch/x86/kernel/setup.c | 20 +++----- fs/proc/proc_sysctl.c | 7 ++- lib/Kconfig.ubsan | 1 mm/highmem.c | 7 ++- mm/kasan/hw_tags.c | 77 +++++++++++++-------------------- mm/kasan/init.c | 23 +++++---- mm/memcontrol.c | 11 +--- mm/memory-failure.c | 20 ++++++-- mm/migrate.c | 27 ++++++----- mm/page_alloc.c | 86 ++++++++++++++++++++++--------------- mm/slub.c | 7 +-- 16 files changed, 173 insertions(+), 154 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2021-01-12 23:48 Andrew Morton 2021-01-15 23:32 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2021-01-12 23:48 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 10 patches, based on e609571b5ffa3528bf85292de1ceaddac342bc1c. Subsystems affected by this patch series: mm/slub mm/pagealloc mm/memcg mm/kasan mm/vmalloc mm/migration mm/hugetlb MAINTAINERS mm/memory-failure mm/process_vm_access Subsystem: mm/slub Jann Horn <jannh@google.com>: mm, slub: consider rest of partial list if acquire_slab() fails Subsystem: mm/pagealloc Hailong liu <liu.hailong6@zte.com.cn>: mm/page_alloc: add a missing mm_page_alloc_zone_locked() tracepoint Subsystem: mm/memcg Hugh Dickins <hughd@google.com>: mm/memcontrol: fix warning in mem_cgroup_page_lruvec() Subsystem: mm/kasan Hailong Liu <liu.hailong6@zte.com.cn>: arm/kasan: fix the array size of kasan_early_shadow_pte[] Subsystem: mm/vmalloc Miaohe Lin <linmiaohe@huawei.com>: mm/vmalloc.c: fix potential memory leak Subsystem: mm/migration Jan Stancek <jstancek@redhat.com>: mm: migrate: initialize err in do_migrate_pages Subsystem: mm/hugetlb Miaohe Lin <linmiaohe@huawei.com>: mm/hugetlb: fix potential missing huge page size info Subsystem: MAINTAINERS Vlastimil Babka <vbabka@suse.cz>: MAINTAINERS: add Vlastimil as slab allocators maintainer Subsystem: mm/memory-failure Oscar Salvador <osalvador@suse.de>: mm,hwpoison: fix printing of page flags Subsystem: mm/process_vm_access Andrew Morton <akpm@linux-foundation.org>: mm/process_vm_access.c: include compat.h MAINTAINERS | 1 + include/linux/kasan.h | 6 +++++- include/linux/memcontrol.h | 2 +- mm/hugetlb.c | 2 +- mm/kasan/init.c | 3 ++- mm/memory-failure.c | 2 +- mm/mempolicy.c | 2 +- mm/page_alloc.c | 31 ++++++++++++++++--------------- mm/process_vm_access.c | 1 + mm/slub.c | 2 +- mm/vmalloc.c | 4 +++- 11 files changed, 33 insertions(+), 23 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2021-01-12 23:48 incoming Andrew Morton @ 2021-01-15 23:32 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2021-01-15 23:32 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, Jan 12, 2021 at 3:48 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 10 patches, based on e609571b5ffa3528bf85292de1ceaddac342bc1c. Whee. I had completely dropped the ball on this - I had built my usual "akpm" branch with the patches, but then had completely forgotten about it after doing my basic build tests. I tend to leave it for a while to see if people send belated ACK/NAK's for the patches, but that "for a while" is typically "overnight", not several days. So if you ever notice that I haven't merged your patch submission, and you haven't seen me comment on them, feel free to ping me to remind me. Because it might just have gotten lost in the shuffle for some random reason. Admittedly it's rare - I think this is the first time I just randomly noticed three days later that I'd never done the actual merge of the patch-series). Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-29 23:13 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-29 23:13 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 16 patches, based on dea8dcf2a9fa8cc540136a6cd885c3beece16ec3. Subsystems affected by this patch series: mm/selftests mm/hugetlb kbuild checkpatch mm/pagecache mm/mremap mm/kasan misc lib mm/slub Subsystem: mm/selftests Harish <harish@linux.ibm.com>: selftests/vm: fix building protection keys test Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: mm/hugetlb: fix deadlock in hugetlb_cow error path Subsystem: kbuild Masahiro Yamada <masahiroy@kernel.org>: Revert "kbuild: avoid static_assert for genksyms" Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: prefer strscpy to strlcpy Subsystem: mm/pagecache Souptick Joarder <jrdr.linux@gmail.com>: mm: add prototype for __add_to_page_cache_locked() Baoquan He <bhe@redhat.com>: mm: memmap defer init doesn't work as expected Subsystem: mm/mremap Kalesh Singh <kaleshsingh@google.com>: mm/mremap.c: fix extent calculation Nicholas Piggin <npiggin@gmail.com>: mm: generalise COW SMC TLB flushing race comment Subsystem: mm/kasan Walter Wu <walter-zh.wu@mediatek.com>: kasan: fix null pointer dereference in kasan_record_aux_stack Subsystem: misc Randy Dunlap <rdunlap@infradead.org>: local64.h: make <asm/local64.h> mandatory Huang Shijie <sjhuang@iluvatar.ai>: sizes.h: add SZ_8G/SZ_16G/SZ_32G macros Josh Poimboeuf <jpoimboe@redhat.com>: kdev_t: always inline major/minor helper functions Subsystem: lib Huang Shijie <sjhuang@iluvatar.ai>: lib/genalloc: fix the overflow when size is too big Ilya Leoshkevich <iii@linux.ibm.com>: lib/zlib: fix inflating zlib streams on s390 Randy Dunlap <rdunlap@infradead.org>: zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c Subsystem: mm/slub Roman Gushchin <guro@fb.com>: mm: slub: call account_slab_page() after slab page initialization arch/alpha/include/asm/local64.h | 1 - arch/arc/include/asm/Kbuild | 1 - arch/arm/include/asm/Kbuild | 1 - arch/arm64/include/asm/Kbuild | 1 - arch/csky/include/asm/Kbuild | 1 - arch/h8300/include/asm/Kbuild | 1 - arch/hexagon/include/asm/Kbuild | 1 - arch/ia64/include/asm/local64.h | 1 - arch/ia64/mm/init.c | 4 ++-- arch/m68k/include/asm/Kbuild | 1 - arch/microblaze/include/asm/Kbuild | 1 - arch/mips/include/asm/Kbuild | 1 - arch/nds32/include/asm/Kbuild | 1 - arch/openrisc/include/asm/Kbuild | 1 - arch/parisc/include/asm/Kbuild | 1 - arch/powerpc/include/asm/Kbuild | 1 - arch/riscv/include/asm/Kbuild | 1 - arch/s390/include/asm/Kbuild | 1 - arch/sh/include/asm/Kbuild | 1 - arch/sparc/include/asm/Kbuild | 1 - arch/x86/include/asm/local64.h | 1 - arch/xtensa/include/asm/Kbuild | 1 - include/asm-generic/Kbuild | 1 + include/linux/build_bug.h | 5 ----- include/linux/kdev_t.h | 22 +++++++++++----------- include/linux/mm.h | 12 ++++++++++-- include/linux/sizes.h | 3 +++ lib/genalloc.c | 25 +++++++++++++------------ lib/zlib_dfltcc/Makefile | 2 +- lib/zlib_dfltcc/dfltcc.c | 6 +++++- lib/zlib_dfltcc/dfltcc_deflate.c | 3 +++ lib/zlib_dfltcc/dfltcc_inflate.c | 4 ++-- lib/zlib_dfltcc/dfltcc_syms.c | 17 ----------------- mm/hugetlb.c | 22 +++++++++++++++++++++- mm/kasan/generic.c | 2 ++ mm/memory.c | 8 +++++--- mm/memory_hotplug.c | 2 +- mm/mremap.c | 4 +++- mm/page_alloc.c | 8 +++++--- mm/slub.c | 5 ++--- scripts/checkpatch.pl | 6 ++++++ tools/testing/selftests/vm/Makefile | 10 +++++----- 42 files changed, 101 insertions(+), 91 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-22 19:58 Andrew Morton 2020-12-22 21:43 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-12-22 19:58 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 60 patches, based on 8653b778e454a7708847aeafe689bce07aeeb94e. Subsystems affected by this patch series: mm/kasan Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: add hardware tag-based mode for arm64", v11: kasan: drop unnecessary GPL text from comment headers kasan: KASAN_VMALLOC depends on KASAN_GENERIC kasan: group vmalloc code kasan: shadow declarations only for software modes kasan: rename (un)poison_shadow to (un)poison_range kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* kasan: only build init.c for software modes kasan: split out shadow.c from common.c kasan: define KASAN_MEMORY_PER_SHADOW_PAGE kasan: rename report and tags files kasan: don't duplicate config dependencies kasan: hide invalid free check implementation kasan: decode stack frame only with KASAN_STACK_ENABLE kasan, arm64: only init shadow for software modes kasan, arm64: only use kasan_depth for software modes kasan, arm64: move initialization message kasan, arm64: rename kasan_init_tags and mark as __init kasan: rename addr_has_shadow to addr_has_metadata kasan: rename print_shadow_for_address to print_memory_metadata kasan: rename SHADOW layout macros to META kasan: separate metadata_fetch_row for each mode kasan: introduce CONFIG_KASAN_HW_TAGS Vincenzo Frascino <vincenzo.frascino@arm.com>: arm64: enable armv8.5-a asm-arch option arm64: mte: add in-kernel MTE helpers arm64: mte: reset the page tag in page->flags arm64: mte: add in-kernel tag fault handler arm64: kasan: allow enabling in-kernel MTE arm64: mte: convert gcr_user into an exclude mask arm64: mte: switch GCR_EL1 in kernel entry and exit kasan, mm: untag page address in free_reserved_area Andrey Konovalov <andreyknvl@google.com>: arm64: kasan: align allocations for HW_TAGS arm64: kasan: add arch layer for memory tagging helpers kasan: define KASAN_GRANULE_SIZE for HW_TAGS kasan, x86, s390: update undef CONFIG_KASAN kasan, arm64: expand CONFIG_KASAN checks kasan, arm64: implement HW_TAGS runtime kasan, arm64: print report from tag fault handler kasan, mm: reset tags when accessing metadata kasan, arm64: enable CONFIG_KASAN_HW_TAGS kasan: add documentation for hardware tag-based mode Vincenzo Frascino <vincenzo.frascino@arm.com>: kselftest/arm64: check GCR_EL1 after context switch Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: boot parameters for hardware tag-based mode", v4: kasan: simplify quarantine_put call site kasan: rename get_alloc/free_info kasan: introduce set_alloc_info kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK kasan: allow VMAP_STACK for HW_TAGS mode kasan: remove __kasan_unpoison_stack kasan: inline kasan_reset_tag for tag-based modes kasan: inline random_tag for HW_TAGS kasan: open-code kasan_unpoison_slab kasan: inline (un)poison_range and check_invalid_free kasan: add and integrate kasan boot parameters kasan, mm: check kasan_enabled in annotations kasan, mm: rename kasan_poison_kfree kasan: don't round_up too much kasan: simplify assign_tag and set_tag calls kasan: clarify comment in __kasan_kfree_large kasan: sanitize objects when metadata doesn't fit kasan, mm: allow cache merging with no metadata kasan: update documentation Documentation/dev-tools/kasan.rst | 274 ++- arch/Kconfig | 8 arch/arm64/Kconfig | 9 arch/arm64/Makefile | 7 arch/arm64/include/asm/assembler.h | 2 arch/arm64/include/asm/cache.h | 3 arch/arm64/include/asm/esr.h | 1 arch/arm64/include/asm/kasan.h | 17 arch/arm64/include/asm/memory.h | 15 arch/arm64/include/asm/mte-def.h | 16 arch/arm64/include/asm/mte-kasan.h | 67 arch/arm64/include/asm/mte.h | 22 arch/arm64/include/asm/processor.h | 2 arch/arm64/include/asm/string.h | 5 arch/arm64/include/asm/uaccess.h | 23 arch/arm64/kernel/asm-offsets.c | 3 arch/arm64/kernel/cpufeature.c | 3 arch/arm64/kernel/entry.S | 41 arch/arm64/kernel/head.S | 2 arch/arm64/kernel/hibernate.c | 5 arch/arm64/kernel/image-vars.h | 2 arch/arm64/kernel/kaslr.c | 3 arch/arm64/kernel/module.c | 6 arch/arm64/kernel/mte.c | 124 + arch/arm64/kernel/setup.c | 2 arch/arm64/kernel/sleep.S | 2 arch/arm64/kernel/smp.c | 2 arch/arm64/lib/mte.S | 16 arch/arm64/mm/copypage.c | 9 arch/arm64/mm/fault.c | 59 arch/arm64/mm/kasan_init.c | 41 arch/arm64/mm/mteswap.c | 9 arch/arm64/mm/proc.S | 23 arch/arm64/mm/ptdump.c | 6 arch/s390/boot/string.c | 1 arch/x86/boot/compressed/misc.h | 1 arch/x86/kernel/acpi/wakeup_64.S | 2 include/linux/kasan-checks.h | 2 include/linux/kasan.h | 423 ++++- include/linux/mm.h | 24 include/linux/moduleloader.h | 3 include/linux/page-flags-layout.h | 2 include/linux/sched.h | 2 include/linux/string.h | 2 init/init_task.c | 2 kernel/fork.c | 4 lib/Kconfig.kasan | 71 lib/test_kasan.c | 2 lib/test_kasan_module.c | 2 mm/kasan/Makefile | 33 mm/kasan/common.c | 1006 +++----------- mm/kasan/generic.c | 72 - mm/kasan/generic_report.c | 13 mm/kasan/hw_tags.c | 276 +++ mm/kasan/init.c | 25 mm/kasan/kasan.h | 195 ++ mm/kasan/quarantine.c | 35 mm/kasan/report.c | 363 +---- mm/kasan/report_generic.c | 169 ++ mm/kasan/report_hw_tags.c | 44 mm/kasan/report_sw_tags.c | 22 mm/kasan/shadow.c | 528 +++++++ mm/kasan/sw_tags.c | 34 mm/kasan/tags.c | 7 mm/kasan/tags_report.c | 7 mm/mempool.c | 4 mm/page_alloc.c | 9 mm/page_poison.c | 2 mm/ptdump.c | 13 mm/slab_common.c | 5 mm/slub.c | 29 scripts/Makefile.lib | 2 tools/testing/selftests/arm64/mte/Makefile | 2 tools/testing/selftests/arm64/mte/check_gcr_el1_cswitch.c | 155 ++ 74 files changed, 2869 insertions(+), 1553 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-22 19:58 incoming Andrew Morton @ 2020-12-22 21:43 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-22 21:43 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, Dec 22, 2020 at 11:58 AM Andrew Morton <akpm@linux-foundation.org> wrote: > > 60 patches, based on 8653b778e454a7708847aeafe689bce07aeeb94e. I see that you enabled renaming in the patches. Lovely. Can you also enable it in the diffstat? > 74 files changed, 2869 insertions(+), 1553 deletions(-) With -M in the diffstat, you should have seen 72 files changed, 2775 insertions(+), 1460 deletions(-) and if you add "--summary", you'll also see the rename part ofthe file create/delete summary: rename mm/kasan/{tags_report.c => report_sw_tags.c} (78%) which is often nice to see in addition to the line stats.. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-18 22:00 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-18 22:00 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 78 patches, based on a409ed156a90093a03fe6a93721ddf4c591eac87. Subsystems affected by this patch series: mm/memcg epoll mm/kasan mm/cleanups epoll Subsystem: mm/memcg Alex Shi <alex.shi@linux.alibaba.com>: Patch series "bail out early for memcg disable": mm/memcg: bail early from swap accounting if memcg disabled mm/memcg: warning on !memcg after readahead page charged Wei Yang <richard.weiyang@gmail.com>: mm/memcg: remove unused definitions Shakeel Butt <shakeelb@google.com>: mm, kvm: account kvm_vcpu_mmap to kmemcg Hui Su <sh_def@163.com>: mm/memcontrol:rewrite mem_cgroup_page_lruvec() Subsystem: epoll Soheil Hassas Yeganeh <soheil@google.com>: Patch series "simplify ep_poll": epoll: check for events when removing a timed out thread from the wait queue epoll: simplify signal handling epoll: pull fatal signal checks into ep_send_events() epoll: move eavail next to the list_empty_careful check epoll: simplify and optimize busy loop logic epoll: pull all code between fetch_events and send_event into the loop epoll: replace gotos with a proper loop epoll: eliminate unnecessary lock for zero timeout Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: add hardware tag-based mode for arm64", v11: kasan: drop unnecessary GPL text from comment headers kasan: KASAN_VMALLOC depends on KASAN_GENERIC kasan: group vmalloc code kasan: shadow declarations only for software modes kasan: rename (un)poison_shadow to (un)poison_range kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* kasan: only build init.c for software modes kasan: split out shadow.c from common.c kasan: define KASAN_MEMORY_PER_SHADOW_PAGE kasan: rename report and tags files kasan: don't duplicate config dependencies kasan: hide invalid free check implementation kasan: decode stack frame only with KASAN_STACK_ENABLE kasan, arm64: only init shadow for software modes kasan, arm64: only use kasan_depth for software modes kasan, arm64: move initialization message kasan, arm64: rename kasan_init_tags and mark as __init kasan: rename addr_has_shadow to addr_has_metadata kasan: rename print_shadow_for_address to print_memory_metadata kasan: rename SHADOW layout macros to META kasan: separate metadata_fetch_row for each mode kasan: introduce CONFIG_KASAN_HW_TAGS Vincenzo Frascino <vincenzo.frascino@arm.com>: arm64: enable armv8.5-a asm-arch option arm64: mte: add in-kernel MTE helpers arm64: mte: reset the page tag in page->flags arm64: mte: add in-kernel tag fault handler arm64: kasan: allow enabling in-kernel MTE arm64: mte: convert gcr_user into an exclude mask arm64: mte: switch GCR_EL1 in kernel entry and exit kasan, mm: untag page address in free_reserved_area Andrey Konovalov <andreyknvl@google.com>: arm64: kasan: align allocations for HW_TAGS arm64: kasan: add arch layer for memory tagging helpers kasan: define KASAN_GRANULE_SIZE for HW_TAGS kasan, x86, s390: update undef CONFIG_KASAN kasan, arm64: expand CONFIG_KASAN checks kasan, arm64: implement HW_TAGS runtime kasan, arm64: print report from tag fault handler kasan, mm: reset tags when accessing metadata kasan, arm64: enable CONFIG_KASAN_HW_TAGS kasan: add documentation for hardware tag-based mode Vincenzo Frascino <vincenzo.frascino@arm.com>: kselftest/arm64: check GCR_EL1 after context switch Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: boot parameters for hardware tag-based mode", v4: kasan: simplify quarantine_put call site kasan: rename get_alloc/free_info kasan: introduce set_alloc_info kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK kasan: allow VMAP_STACK for HW_TAGS mode kasan: remove __kasan_unpoison_stack kasan: inline kasan_reset_tag for tag-based modes kasan: inline random_tag for HW_TAGS kasan: open-code kasan_unpoison_slab kasan: inline (un)poison_range and check_invalid_free kasan: add and integrate kasan boot parameters kasan, mm: check kasan_enabled in annotations kasan, mm: rename kasan_poison_kfree kasan: don't round_up too much kasan: simplify assign_tag and set_tag calls kasan: clarify comment in __kasan_kfree_large kasan: sanitize objects when metadata doesn't fit kasan, mm: allow cache merging with no metadata kasan: update documentation Subsystem: mm/cleanups Colin Ian King <colin.king@canonical.com>: mm/Kconfig: fix spelling mistake "whats" -> "what's" Subsystem: epoll Willem de Bruijn <willemb@google.com>: Patch series "add epoll_pwait2 syscall", v4: epoll: convert internal api to timespec64 epoll: add syscall epoll_pwait2 epoll: wire up syscall epoll_pwait2 selftests/filesystems: expand epoll with epoll_pwait2 Documentation/dev-tools/kasan.rst | 274 +- arch/Kconfig | 8 arch/alpha/kernel/syscalls/syscall.tbl | 1 arch/arm/tools/syscall.tbl | 1 arch/arm64/Kconfig | 9 arch/arm64/Makefile | 7 arch/arm64/include/asm/assembler.h | 2 arch/arm64/include/asm/cache.h | 3 arch/arm64/include/asm/esr.h | 1 arch/arm64/include/asm/kasan.h | 17 arch/arm64/include/asm/memory.h | 15 arch/arm64/include/asm/mte-def.h | 16 arch/arm64/include/asm/mte-kasan.h | 67 arch/arm64/include/asm/mte.h | 22 arch/arm64/include/asm/processor.h | 2 arch/arm64/include/asm/string.h | 5 arch/arm64/include/asm/uaccess.h | 23 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 2 arch/arm64/kernel/asm-offsets.c | 3 arch/arm64/kernel/cpufeature.c | 3 arch/arm64/kernel/entry.S | 41 arch/arm64/kernel/head.S | 2 arch/arm64/kernel/hibernate.c | 5 arch/arm64/kernel/image-vars.h | 2 arch/arm64/kernel/kaslr.c | 3 arch/arm64/kernel/module.c | 6 arch/arm64/kernel/mte.c | 124 + arch/arm64/kernel/setup.c | 2 arch/arm64/kernel/sleep.S | 2 arch/arm64/kernel/smp.c | 2 arch/arm64/lib/mte.S | 16 arch/arm64/mm/copypage.c | 9 arch/arm64/mm/fault.c | 59 arch/arm64/mm/kasan_init.c | 41 arch/arm64/mm/mteswap.c | 9 arch/arm64/mm/proc.S | 23 arch/arm64/mm/ptdump.c | 6 arch/ia64/kernel/syscalls/syscall.tbl | 1 arch/m68k/kernel/syscalls/syscall.tbl | 1 arch/microblaze/kernel/syscalls/syscall.tbl | 1 arch/mips/kernel/syscalls/syscall_n32.tbl | 1 arch/mips/kernel/syscalls/syscall_n64.tbl | 1 arch/mips/kernel/syscalls/syscall_o32.tbl | 1 arch/parisc/kernel/syscalls/syscall.tbl | 1 arch/powerpc/kernel/syscalls/syscall.tbl | 1 arch/s390/boot/string.c | 1 arch/s390/kernel/syscalls/syscall.tbl | 1 arch/sh/kernel/syscalls/syscall.tbl | 1 arch/sparc/kernel/syscalls/syscall.tbl | 1 arch/x86/boot/compressed/misc.h | 1 arch/x86/entry/syscalls/syscall_32.tbl | 1 arch/x86/entry/syscalls/syscall_64.tbl | 1 arch/x86/kernel/acpi/wakeup_64.S | 2 arch/x86/kvm/x86.c | 2 arch/xtensa/kernel/syscalls/syscall.tbl | 1 fs/eventpoll.c | 359 ++- include/linux/compat.h | 6 include/linux/kasan-checks.h | 2 include/linux/kasan.h | 423 ++-- include/linux/memcontrol.h | 137 - include/linux/mm.h | 24 include/linux/mmdebug.h | 13 include/linux/moduleloader.h | 3 include/linux/page-flags-layout.h | 2 include/linux/sched.h | 2 include/linux/string.h | 2 include/linux/syscalls.h | 5 include/uapi/asm-generic/unistd.h | 4 init/init_task.c | 2 kernel/fork.c | 4 kernel/sys_ni.c | 2 lib/Kconfig.kasan | 71 lib/test_kasan.c | 2 lib/test_kasan_module.c | 2 mm/Kconfig | 2 mm/kasan/Makefile | 33 mm/kasan/common.c | 1006 ++-------- mm/kasan/generic.c | 72 mm/kasan/generic_report.c | 13 mm/kasan/hw_tags.c | 294 ++ mm/kasan/init.c | 25 mm/kasan/kasan.h | 204 +- mm/kasan/quarantine.c | 35 mm/kasan/report.c | 363 +-- mm/kasan/report_generic.c | 169 + mm/kasan/report_hw_tags.c | 44 mm/kasan/report_sw_tags.c | 22 mm/kasan/shadow.c | 541 +++++ mm/kasan/sw_tags.c | 34 mm/kasan/tags.c | 7 mm/kasan/tags_report.c | 7 mm/memcontrol.c | 53 mm/mempool.c | 4 mm/page_alloc.c | 9 mm/page_poison.c | 2 mm/ptdump.c | 13 mm/slab_common.c | 5 mm/slub.c | 29 scripts/Makefile.lib | 2 tools/testing/selftests/arm64/mte/Makefile | 2 tools/testing/selftests/arm64/mte/check_gcr_el1_cswitch.c | 155 + tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 72 virt/kvm/coalesced_mmio.c | 2 virt/kvm/kvm_main.c | 2 105 files changed, 3268 insertions(+), 1873 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-16 4:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-16 4:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - lots of little subsystems - a few post-linux-next MM material. Most of this awaits more merging of other trees. 95 patches, based on 489e9fea66f31086f85d9a18e61e4791d94a56a4. Subsystems affected by this patch series: mm/swap mm/memory-hotplug alpha procfs misc core-kernel bitmap lib lz4 bitops checkpatch nilfs kdump rapidio gcov bfs relay resource ubsan reboot fault-injection lzo apparmor mm/pagemap mm/cleanups mm/gup Subsystem: mm/swap Zhaoyang Huang <huangzhaoyang@gmail.com>: mm: fix a race on nr_swap_pages Subsystem: mm/memory-hotplug Laurent Dufour <ldufour@linux.ibm.com>: mm/memory_hotplug: quieting offline operation Subsystem: alpha Thomas Gleixner <tglx@linutronix.de>: alpha: replace bogus in_interrupt() Subsystem: procfs Randy Dunlap <rdunlap@infradead.org>: procfs: delete duplicated words + other fixes Anand K Mistry <amistry@google.com>: proc: provide details on indirect branch speculation Alexey Dobriyan <adobriyan@gmail.com>: proc: fix lookup in /proc/net subdirectories after setns(2) Hui Su <sh_def@163.com>: fs/proc: make pde_get() return nothing Subsystem: misc Christophe Leroy <christophe.leroy@csgroup.eu>: asm-generic: force inlining of get_order() to work around gcc10 poor decision Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: split out mathematical helpers Subsystem: core-kernel Hui Su <sh_def@163.com>: kernel/acct.c: use #elif instead of #end and #elif Subsystem: bitmap Andy Shevchenko <andriy.shevchenko@linux.intel.com>: include/linux/bitmap.h: convert bitmap_empty() / bitmap_full() to return boolean "Ma, Jianpeng" <jianpeng.ma@intel.com>: bitmap: remove unused function declaration Subsystem: lib Geert Uytterhoeven <geert@linux-m68k.org>: lib/test_free_pages.c: add basic progress indicators "Gustavo A. R. Silva" <gustavoars@kernel.org>: Patch series "] lib/stackdepot.c: Replace one-element array with flexible-array member": lib/stackdepot.c: replace one-element array with flexible-array member lib/stackdepot.c: use flex_array_size() helper in memcpy() lib/stackdepot.c: use array_size() helper in jhash2() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: lib/test_lockup.c: minimum fix to get it compiled on PREEMPT_RT Andy Shevchenko <andriy.shevchenko@linux.intel.com>: lib/list_kunit: follow new file name convention for KUnit tests lib/linear_ranges_kunit: follow new file name convention for KUnit tests lib/bits_kunit: follow new file name convention for KUnit tests lib/cmdline: fix get_option() for strings starting with hyphen lib/cmdline: allow NULL to be an output for get_option() lib/cmdline_kunit: add a new test suite for cmdline API Jakub Jelinek <jakub@redhat.com>: ilog2: improve ilog2 for constant arguments Nick Desaulniers <ndesaulniers@google.com>: lib/string: remove unnecessary #undefs Daniel Axtens <dja@axtens.net>: Patch series "Fortify strscpy()", v7: lib: string.h: detect intra-object overflow in fortified string functions lkdtm: tests for FORTIFY_SOURCE Francis Laniel <laniel_francis@privacyrequired.com>: string.h: add FORTIFY coverage for strscpy() drivers/misc/lkdtm: add new file in LKDTM to test fortified strscpy drivers/misc/lkdtm/lkdtm.h: correct wrong filenames in comment Alexey Dobriyan <adobriyan@gmail.com>: lib: cleanup kstrto*() usage Subsystem: lz4 Gao Xiang <hsiangkao@redhat.com>: lib/lz4: explicitly support in-place decompression Subsystem: bitops Syed Nayyar Waris <syednwaris@gmail.com>: Patch series "Introduce the for_each_set_clump macro", v12: bitops: introduce the for_each_set_clump macro lib/test_bitmap.c: add for_each_set_clump test cases gpio: thunderx: utilize for_each_set_clump macro gpio: xilinx: utilize generic bitmap_get_value and _set_value Subsystem: checkpatch Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: add new exception to repeated word check Aditya Srivastava <yashsri421@gmail.com>: checkpatch: fix false positives in REPEATED_WORD warning Łukasz Stelmach <l.stelmach@samsung.com>: checkpatch: ignore generated CamelCase defines and enum values Joe Perches <joe@perches.com>: checkpatch: prefer static const declarations checkpatch: allow --fix removal of unnecessary break statements Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: extend attributes check to handle more patterns Tom Rix <trix@redhat.com>: checkpatch: add a fixer for missing newline at eof Joe Perches <joe@perches.com>: checkpatch: update __attribute__((section("name"))) quote removal Aditya Srivastava <yashsri421@gmail.com>: checkpatch: add fix option for GERRIT_CHANGE_ID Joe Perches <joe@perches.com>: checkpatch: add __alias and __weak to suggested __attribute__ conversions Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: improve email parsing checkpatch: fix spelling errors and remove repeated word Aditya Srivastava <yashsri421@gmail.com>: checkpatch: avoid COMMIT_LOG_LONG_LINE warning for signature tags Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: fix unescaped left brace Aditya Srivastava <yashsri421@gmail.com>: checkpatch: add fix option for ASSIGNMENT_CONTINUATIONS checkpatch: add fix option for LOGICAL_CONTINUATIONS checkpatch: add fix and improve warning msg for non-standard signature Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: add warning for unnecessary use of %h[xudi] and %hh[xudi] checkpatch: add warning for lines starting with a '#' in commit log checkpatch: fix TYPO_SPELLING check for words with apostrophe Joe Perches <joe@perches.com>: checkpatch: add printk_once and printk_ratelimit to prefer pr_<level> warning Subsystem: nilfs Alex Shi <alex.shi@linux.alibaba.com>: fs/nilfs2: remove some unused macros to tame gcc Subsystem: kdump Alexander Egorenkov <egorenar@linux.ibm.com>: kdump: append uts_namespace.name offset to VMCOREINFO Subsystem: rapidio Sebastian Andrzej Siewior <bigeasy@linutronix.de>: rapidio: remove unused rio_get_asm() and rio_get_device() Subsystem: gcov Nick Desaulniers <ndesaulniers@google.com>: gcov: remove support for GCC < 4.9 Alex Shi <alex.shi@linux.alibaba.com>: gcov: fix kernel-doc markup issue Subsystem: bfs Randy Dunlap <rdunlap@infradead.org>: bfs: don't use WARNING: string when it's just info. Subsystem: relay Jani Nikula <jani.nikula@intel.com>: Patch series "relay: cleanup and const callbacks", v2: relay: remove unused buf_mapped and buf_unmapped callbacks relay: require non-NULL callbacks in relay_open() relay: make create_buf_file and remove_buf_file callbacks mandatory relay: allow the use of const callback structs drm/i915: make relay callbacks const ath10k: make relay callbacks const ath11k: make relay callbacks const ath9k: make relay callbacks const blktrace: make relay callbacks const Subsystem: resource Mauro Carvalho Chehab <mchehab+huawei@kernel.org>: kernel/resource.c: fix kernel-doc markups Subsystem: ubsan Kees Cook <keescook@chromium.org>: Patch series "Clean up UBSAN Makefile", v2: ubsan: remove redundant -Wno-maybe-uninitialized ubsan: move cc-option tests into Kconfig ubsan: disable object-size sanitizer under GCC ubsan: disable UBSAN_TRAP for all*config ubsan: enable for all*config builds ubsan: remove UBSAN_MISC in favor of individual options ubsan: expand tests and reporting Dmitry Vyukov <dvyukov@google.com>: kcov: don't instrument with UBSAN Zou Wei <zou_wei@huawei.com>: lib/ubsan.c: mark type_check_kinds with static keyword Subsystem: reboot Matteo Croce <mcroce@microsoft.com>: reboot: refactor and comment the cpu selection code reboot: allow to specify reboot mode via sysfs reboot: remove cf9_safe from allowed types and rename cf9_force Patch series "reboot: sysfs improvements": reboot: allow to override reboot type if quirks are found reboot: hide from sysfs not applicable settings Subsystem: fault-injection Barnabás Pőcze <pobrn@protonmail.com>: fault-injection: handle EI_ETYPE_TRUE Subsystem: lzo Jason Yan <yanaijie@huawei.com>: lib/lzo/lzo1x_compress.c: make lzogeneric1x_1_compress() static Subsystem: apparmor Andy Shevchenko <andriy.shevchenko@linux.intel.com>: apparmor: remove duplicate macro list_entry_is_head() Subsystem: mm/pagemap Christoph Hellwig <hch@lst.de>: Patch series "simplify follow_pte a bit": mm: unexport follow_pte_pmd mm: simplify follow_pte{,pmd} Subsystem: mm/cleanups Haitao Shi <shihaitao1@huawei.com>: mm: fix some spelling mistakes in comments Subsystem: mm/gup Jann Horn <jannh@google.com>: mmap locking API: don't check locking if the mm isn't live yet mm/gup: assert that the mmap lock is held in __get_user_pages() Documentation/ABI/testing/sysfs-kernel-reboot | 32 Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 Documentation/dev-tools/ubsan.rst | 1 Documentation/filesystems/proc.rst | 2 MAINTAINERS | 5 arch/alpha/kernel/process.c | 2 arch/powerpc/kernel/vmlinux.lds.S | 4 arch/s390/pci/pci_mmio.c | 4 drivers/gpio/gpio-thunderx.c | 11 drivers/gpio/gpio-xilinx.c | 61 - drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 2 drivers/misc/lkdtm/Makefile | 1 drivers/misc/lkdtm/bugs.c | 50 + drivers/misc/lkdtm/core.c | 3 drivers/misc/lkdtm/fortify.c | 82 ++ drivers/misc/lkdtm/lkdtm.h | 19 drivers/net/wireless/ath/ath10k/spectral.c | 2 drivers/net/wireless/ath/ath11k/spectral.c | 2 drivers/net/wireless/ath/ath9k/common-spectral.c | 2 drivers/rapidio/rio.c | 81 -- fs/bfs/inode.c | 2 fs/dax.c | 9 fs/exec.c | 8 fs/nfs/callback_proc.c | 5 fs/nilfs2/segment.c | 5 fs/proc/array.c | 28 fs/proc/base.c | 2 fs/proc/generic.c | 24 fs/proc/internal.h | 10 fs/proc/proc_net.c | 20 include/asm-generic/bitops/find.h | 19 include/asm-generic/getorder.h | 2 include/linux/bitmap.h | 67 +- include/linux/bitops.h | 24 include/linux/dcache.h | 1 include/linux/iommu-helper.h | 4 include/linux/kernel.h | 173 ----- include/linux/log2.h | 3 include/linux/math.h | 177 +++++ include/linux/mm.h | 6 include/linux/mm_types.h | 10 include/linux/mmap_lock.h | 16 include/linux/proc_fs.h | 8 include/linux/rcu_node_tree.h | 2 include/linux/relay.h | 29 include/linux/rio_drv.h | 3 include/linux/string.h | 75 +- include/linux/units.h | 2 kernel/Makefile | 3 kernel/acct.c | 7 kernel/crash_core.c | 1 kernel/fail_function.c | 6 kernel/gcov/gcc_4_7.c | 10 kernel/reboot.c | 308 ++++++++- kernel/relay.c | 111 --- kernel/resource.c | 24 kernel/trace/blktrace.c | 2 lib/Kconfig.debug | 11 lib/Kconfig.ubsan | 154 +++- lib/Makefile | 7 lib/bits_kunit.c | 75 ++ lib/cmdline.c | 20 lib/cmdline_kunit.c | 100 +++ lib/errname.c | 1 lib/error-inject.c | 2 lib/errseq.c | 1 lib/find_bit.c | 17 lib/linear_ranges_kunit.c | 228 +++++++ lib/list-test.c | 748 ----------------------- lib/list_kunit.c | 748 +++++++++++++++++++++++ lib/lz4/lz4_decompress.c | 6 lib/lz4/lz4defs.h | 1 lib/lzo/lzo1x_compress.c | 2 lib/math/div64.c | 4 lib/math/int_pow.c | 2 lib/math/int_sqrt.c | 3 lib/math/reciprocal_div.c | 9 lib/stackdepot.c | 11 lib/string.c | 4 lib/test_bitmap.c | 143 ++++ lib/test_bits.c | 75 -- lib/test_firmware.c | 9 lib/test_free_pages.c | 5 lib/test_kmod.c | 26 lib/test_linear_ranges.c | 228 ------- lib/test_lockup.c | 16 lib/test_ubsan.c | 74 ++ lib/ubsan.c | 2 mm/filemap.c | 2 mm/gup.c | 2 mm/huge_memory.c | 2 mm/khugepaged.c | 2 mm/memblock.c | 2 mm/memory.c | 36 - mm/memory_hotplug.c | 2 mm/migrate.c | 2 mm/page_ext.c | 2 mm/swapfile.c | 11 scripts/Makefile.ubsan | 49 - scripts/checkpatch.pl | 495 +++++++++++---- security/apparmor/apparmorfs.c | 3 tools/testing/selftests/lkdtm/tests.txt | 1 102 files changed, 3022 insertions(+), 1899 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-15 20:32 Andrew Morton 2020-12-15 21:00 ` incoming Linus Torvalds 2020-12-15 22:48 ` incoming Linus Torvalds 0 siblings, 2 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-15 20:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits - more MM work: a memcg scalability improvememt 19 patches, based on 148842c98a24e508aecb929718818fbf4c2a6ff3. Subsystems affected by this patch series: Alex Shi <alex.shi@linux.alibaba.com>: Patch series "per memcg lru lock", v21: mm/thp: move lru_add_page_tail() to huge_memory.c mm/thp: use head for head page in lru_add_page_tail() mm/thp: simplify lru_add_page_tail() mm/thp: narrow lru locking mm/vmscan: remove unnecessary lruvec adding mm/rmap: stop store reordering issue on page->mapping Hugh Dickins <hughd@google.com>: mm: page_idle_get_page() does not need lru_lock Alex Shi <alex.shi@linux.alibaba.com>: mm/memcg: add debug checking in lock_page_memcg mm/swap.c: fold vm event PGROTATED into pagevec_move_tail_fn mm/lru: move lock into lru_note_cost mm/vmscan: remove lruvec reget in move_pages_to_lru mm/mlock: remove lru_lock on TestClearPageMlocked mm/mlock: remove __munlock_isolate_lru_page() mm/lru: introduce TestClearPageLRU() mm/compaction: do page isolation first in compaction mm/swap.c: serialize memcg changes in pagevec_lru_move_fn mm/lru: replace pgdat lru_lock with lruvec lock Alexander Duyck <alexander.h.duyck@linux.intel.com>: mm/lru: introduce relock_page_lruvec() Hugh Dickins <hughd@google.com>: mm/lru: revise the comments of lru_lock Documentation/admin-guide/cgroup-v1/memcg_test.rst | 15 - Documentation/admin-guide/cgroup-v1/memory.rst | 23 - Documentation/trace/events-kmem.rst | 2 Documentation/vm/unevictable-lru.rst | 22 - include/linux/memcontrol.h | 110 +++++++ include/linux/mm_types.h | 2 include/linux/mmzone.h | 6 include/linux/page-flags.h | 1 include/linux/swap.h | 4 mm/compaction.c | 98 ++++--- mm/filemap.c | 4 mm/huge_memory.c | 109 ++++--- mm/memcontrol.c | 84 +++++- mm/mlock.c | 93 ++---- mm/mmzone.c | 1 mm/page_alloc.c | 1 mm/page_idle.c | 4 mm/rmap.c | 12 mm/swap.c | 292 ++++++++------------- mm/vmscan.c | 239 ++++++++--------- mm/workingset.c | 2 21 files changed, 644 insertions(+), 480 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 20:32 incoming Andrew Morton @ 2020-12-15 21:00 ` Linus Torvalds 2020-12-15 22:48 ` incoming Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 21:00 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, Dec 15, 2020 at 12:32 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - more MM work: a memcg scalability improvememt > > 19 patches, based on 148842c98a24e508aecb929718818fbf4c2a6ff3. I'm not seeing patch 10/19 at all. And patch 19/19 is corrupted and has an attachment with a '^P' character in it. I could fix it up, but with the missing patch in the middle I'm not going to even try. 'b4' is also very unhappy about that patch 19/19. I don't know what went wrong, but I'll ignore this send - please re-send the series at your leisure, ok? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 20:32 incoming Andrew Morton 2020-12-15 21:00 ` incoming Linus Torvalds @ 2020-12-15 22:48 ` Linus Torvalds 2020-12-15 22:49 ` incoming Linus Torvalds 1 sibling, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 22:48 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, Dec 15, 2020 at 12:32 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - more MM work: a memcg scalability improvememt > > 19 patches, based on 148842c98a24e508aecb929718818fbf4c2a6ff3. With your re-send, I get all patches, but they don't actually apply cleanly. Is that base correct? I get error: patch failed: mm/huge_memory.c:2750 error: mm/huge_memory.c: patch does not apply Patch failed at 0004 mm/thp: narrow lru locking for that patch "[patch 04/19] mm/thp: narrow lru locking", and that's definitely true: the patch fragment has @@ -2750,7 +2751,7 @@ int split_huge_page_to_list(struct page __dec_lruvec_page_state(head, NR_FILE_THPS); } - __split_huge_page(page, list, end, flags); + __split_huge_page(page, list, end); ret = 0; } else { if (IS_ENABLED(CONFIG_DEBUG_VM) && mapcount) { but that __dec_lruvec_page_state() conversion was done by your previous commit series. So I have the feeling that what you actually mean by "base" isn't actually really the base for that series at all.. I will try to apply it on top of my merge of your previous series instead. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 22:48 ` incoming Linus Torvalds @ 2020-12-15 22:49 ` Linus Torvalds 2020-12-15 22:55 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 22:49 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux-MM, mm-commits On Tue, Dec 15, 2020 at 2:48 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > I will try to apply it on top of my merge of your previous series instead. Yes, then it applies cleanly. So apparently we just have different concepts of what really constitutes a "base" for applying your series. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 22:49 ` incoming Linus Torvalds @ 2020-12-15 22:55 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-15 22:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: Linux-MM, mm-commits On Tue, 15 Dec 2020 14:49:24 -0800 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, Dec 15, 2020 at 2:48 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > I will try to apply it on top of my merge of your previous series instead. > > Yes, then it applies cleanly. So apparently we just have different > concepts of what really constitutes a "base" for applying your series. > oop, sorry, yes, the "based on" thing was wrong because I had two series in flight simultaneously. I've never tried that before.. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-15 3:02 Andrew Morton 2020-12-15 3:25 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-12-15 3:02 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - a few random little subsystems - almost all of the MM patches which are staged ahead of linux-next material. I'll trickle to post-linux-next work in as the dependents get merged up. 200 patches, based on 2c85ebc57b3e1817b6ce1a6b703928e113a90442. Subsystems affected by this patch series: kthread kbuild ide ntfs ocfs2 arch mm/slab-generic mm/slab mm/slub mm/dax mm/debug mm/pagecache mm/gup mm/swap mm/shmem mm/memcg mm/pagemap mm/mremap mm/hmm mm/vmalloc mm/documentation mm/kasan mm/pagealloc mm/memory-failure mm/hugetlb mm/vmscan mm/z3fold mm/compaction mm/oom-kill mm/migration mm/cma mm/page-poison mm/userfaultfd mm/zswap mm/zsmalloc mm/uaccess mm/zram mm/cleanups Subsystem: kthread Rob Clark <robdclark@chromium.org>: kthread: add kthread_work tracepoints Petr Mladek <pmladek@suse.com>: kthread_worker: document CPU hotplug handling Subsystem: kbuild Petr Vorel <petr.vorel@gmail.com>: uapi: move constants from <linux/kernel.h> to <linux/const.h> Subsystem: ide Sebastian Andrzej Siewior <bigeasy@linutronix.de>: ide/falcon: remove in_interrupt() usage ide: remove BUG_ON(in_interrupt() || irqs_disabled()) from ide_unregister() Subsystem: ntfs Alex Shi <alex.shi@linux.alibaba.com>: fs/ntfs: remove unused varibles fs/ntfs: remove unused variable attr_len Subsystem: ocfs2 Tom Rix <trix@redhat.com>: fs/ocfs2/cluster/tcp.c: remove unneeded break Mauricio Faria de Oliveira <mfo@canonical.com>: ocfs2: ratelimit the 'max lookup times reached' notice Subsystem: arch Colin Ian King <colin.king@canonical.com>: arch/Kconfig: fix spelling mistakes Subsystem: mm/slab-generic Hui Su <sh_def@163.com>: mm/slab_common.c: use list_for_each_entry in dump_unreclaimable_slab() Bartosz Golaszewski <bgolaszewski@baylibre.com>: Patch series "slab: provide and use krealloc_array()", v3: mm: slab: clarify krealloc()'s behavior with __GFP_ZERO mm: slab: provide krealloc_array() ALSA: pcm: use krealloc_array() vhost: vringh: use krealloc_array() pinctrl: use krealloc_array() edac: ghes: use krealloc_array() drm: atomic: use krealloc_array() hwtracing: intel: use krealloc_array() dma-buf: use krealloc_array() Vlastimil Babka <vbabka@suse.cz>: mm, slab, slub: clear the slab_cache field when freeing page Subsystem: mm/slab Alexander Popov <alex.popov@linux.com>: mm/slab: rerform init_on_free earlier Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: mm, slub: use kmem_cache_debug_flags() in deactivate_slab() Bharata B Rao <bharata@linux.ibm.com>: mm/slub: let number of online CPUs determine the slub page order Subsystem: mm/dax Dan Williams <dan.j.williams@intel.com>: device-dax/kmem: use struct_size() Subsystem: mm/debug Zhenhua Huang <zhenhuah@codeaurora.org>: mm: fix page_owner initializing issue for arm32 Liam Mark <lmark@codeaurora.org>: mm/page_owner: record timestamp and pid Subsystem: mm/pagecache Kent Overstreet <kent.overstreet@gmail.com>: Patch series "generic_file_buffered_read() improvements", v2: mm/filemap/c: break generic_file_buffered_read up into multiple functions mm/filemap.c: generic_file_buffered_read() now uses find_get_pages_contig Alex Shi <alex.shi@linux.alibaba.com>: mm/truncate: add parameter explanation for invalidate_mapping_pagevec Hailong Liu <carver4lio@163.com>: mm/filemap.c: remove else after a return Subsystem: mm/gup John Hubbard <jhubbard@nvidia.com>: Patch series "selftests/vm: gup_test, hmm-tests, assorted improvements", v3: mm/gup_benchmark: rename to mm/gup_test selftests/vm: use a common gup_test.h selftests/vm: rename run_vmtests --> run_vmtests.sh selftests/vm: minor cleanup: Makefile and gup_test.c selftests/vm: only some gup_test items are really benchmarks selftests/vm: gup_test: introduce the dump_pages() sub-test selftests/vm: run_vmtests.sh: update and clean up gup_test invocation selftests/vm: hmm-tests: remove the libhugetlbfs dependency selftests/vm: 2x speedup for run_vmtests.sh Barry Song <song.bao.hua@hisilicon.com>: mm/gup_test.c: mark gup_test_init as __init function mm/gup_test: GUP_TEST depends on DEBUG_FS Jason Gunthorpe <jgg@nvidia.com>: Patch series "Add a seqcount between gup_fast and copy_page_range()", v4: mm/gup: reorganize internal_get_user_pages_fast() mm/gup: prevent gup_fast from racing with COW during fork mm/gup: remove the vma allocation from gup_longterm_locked() mm/gup: combine put_compound_head() and unpin_user_page() Subsystem: mm/swap Ralph Campbell <rcampbell@nvidia.com>: mm: handle zone device pages in release_pages() Miaohe Lin <linmiaohe@huawei.com>: mm/swapfile.c: use helper function swap_count() in add_swap_count_continuation() mm/swap_state: skip meaningless swap cache readahead when ra_info.win == 0 mm/swapfile.c: remove unnecessary out label in __swap_duplicate() mm/swapfile.c: use memset to fill the swap_map with SWAP_HAS_CACHE Jeff Layton <jlayton@kernel.org>: mm: remove pagevec_lookup_range_nr_tag() Subsystem: mm/shmem Hui Su <sh_def@163.com>: mm/shmem.c: make shmem_mapping() inline Randy Dunlap <rdunlap@infradead.org>: tmpfs: fix Documentation nits Subsystem: mm/memcg Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: add file_thp, shmem_thp to memory.stat Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: remove unused mod_memcg_obj_state() Miaohe Lin <linmiaohe@huawei.com>: mm: memcontrol: eliminate redundant check in __mem_cgroup_insert_exceeded() Muchun Song <songmuchun@bytedance.com>: mm: memcg/slab: fix return of child memcg objcg for root memcg mm: memcg/slab: fix use after free in obj_cgroup_charge Shakeel Butt <shakeelb@google.com>: mm/rmap: always do TTU_IGNORE_ACCESS Alex Shi <alex.shi@linux.alibaba.com>: mm/memcg: update page struct member in comments Roman Gushchin <guro@fb.com>: mm: memcg: fix obsolete code comments Patch series "mm: memcg: deprecate cgroup v1 non-hierarchical mode", v1: mm: memcg: deprecate the non-hierarchical mode docs: cgroup-v1: reflect the deprecation of the non-hierarchical mode cgroup: remove obsoleted broken_hierarchy and warned_broken_hierarchy Hui Su <sh_def@163.com>: mm/page_counter: use page_counter_read in page_counter_set_max Lukas Bulwahn <lukas.bulwahn@gmail.com>: mm: memcg: remove obsolete memcg_has_children() Muchun Song <songmuchun@bytedance.com>: mm: memcg/slab: rename *_lruvec_slab_state to *_lruvec_kmem_state Kaixu Xia <kaixuxia@tencent.com>: mm: memcontrol: sssign boolean values to a bool variable Alex Shi <alex.shi@linux.alibaba.com>: mm/memcg: remove incorrect comment Shakeel Butt <shakeelb@google.com>: Patch series "memcg: add pagetable comsumption to memory.stat", v2: mm: move lruvec stats update functions to vmstat.h mm: memcontrol: account pagetables per node Subsystem: mm/pagemap Dan Williams <dan.j.williams@intel.com>: xen/unpopulated-alloc: consolidate pgmap manipulation Kalesh Singh <kaleshsingh@google.com>: Patch series "Speed up mremap on large regions", v4: kselftests: vm: add mremap tests mm: speedup mremap on 1GB or larger regions arm64: mremap speedup - enable HAVE_MOVE_PUD x86: mremap speedup - Enable HAVE_MOVE_PUD John Hubbard <jhubbard@nvidia.com>: mm: cleanup: remove unused tsk arg from __access_remote_vm Alex Shi <alex.shi@linux.alibaba.com>: mm/mapping_dirty_helpers: enhance the kernel-doc markups mm/page_vma_mapped.c: add colon to fix kernel-doc markups error for check_pte Axel Rasmussen <axelrasmussen@google.com>: mm: mmap_lock: add tracepoints around lock acquisition "Matthew Wilcox (Oracle)" <willy@infradead.org>: sparc: fix handling of page table constructor failure mm: move free_unref_page to mm/internal.h Subsystem: mm/mremap Dmitry Safonov <dima@arista.com>: Patch series "mremap: move_vma() fixes": mm/mremap: account memory on do_munmap() failure mm/mremap: for MREMAP_DONTUNMAP check security_vm_enough_memory_mm() mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio vm_ops: rename .split() callback to .may_split() mremap: check if it's possible to split original vma mm: forbid splitting special mappings Subsystem: mm/hmm Daniel Vetter <daniel.vetter@ffwll.ch>: mm: track mmu notifiers in fs_reclaim_acquire/release mm: extract might_alloc() debug check locking/selftests: add testcases for fs_reclaim Subsystem: mm/vmalloc Andrew Morton <akpm@linux-foundation.org>: mm/vmalloc.c:__vmalloc_area_node(): avoid 32-bit overflow "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: use free_vm_area() if an allocation fails mm/vmalloc: rework the drain logic Alex Shi <alex.shi@linux.alibaba.com>: mm/vmalloc: add 'align' parameter explanation for pvm_determine_end_from_reverse Baolin Wang <baolin.wang@linux.alibaba.com>: mm/vmalloc.c: remove unnecessary return statement Waiman Long <longman@redhat.com>: mm/vmalloc: Fix unlock order in s_stop() Subsystem: mm/documentation Alex Shi <alex.shi@linux.alibaba.com>: docs/vm: remove unused 3 items explanation for /proc/vmstat Subsystem: mm/kasan Vincenzo Frascino <vincenzo.frascino@arm.com>: mm/vmalloc.c: fix kasan shadow poisoning size Walter Wu <walter-zh.wu@mediatek.com>: Patch series "kasan: add workqueue stack for generic KASAN", v5: workqueue: kasan: record workqueue stack kasan: print workqueue stack lib/test_kasan.c: add workqueue test case kasan: update documentation for generic kasan Marco Elver <elver@google.com>: lkdtm: disable KASAN for rodata.o Subsystem: mm/pagealloc Mike Rapoport <rppt@linux.ibm.com>: Patch series "arch, mm: deprecate DISCONTIGMEM", v2: alpha: switch from DISCONTIGMEM to SPARSEMEM ia64: remove custom __early_pfn_to_nid() ia64: remove 'ifdef CONFIG_ZONE_DMA32' statements ia64: discontig: paging_init(): remove local max_pfn calculation ia64: split virtual map initialization out of paging_init() ia64: forbid using VIRTUAL_MEM_MAP with FLATMEM ia64: make SPARSEMEM default and disable DISCONTIGMEM arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL arm, arm64: move free_unused_memmap() to generic mm arc: use FLATMEM with freeing of unused memory map instead of DISCONTIGMEM m68k/mm: make node data and node setup depend on CONFIG_DISCONTIGMEM m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM m68k: deprecate DISCONTIGMEM Patch series "arch, mm: improve robustness of direct map manipulation", v7: mm: introduce debug_pagealloc_{map,unmap}_pages() helpers PM: hibernate: make direct map manipulations more explicit arch, mm: restore dependency of __kernel_map_pages() on DEBUG_PAGEALLOC arch, mm: make kernel_page_present() always available Vlastimil Babka <vbabka@suse.cz>: Patch series "disable pcplists during memory offline", v3: mm, page_alloc: clean up pageset high and batch update mm, page_alloc: calculate pageset high and batch once per zone mm, page_alloc: remove setup_pageset() mm, page_alloc: simplify pageset_update() mm, page_alloc: cache pageset high and batch in struct zone mm, page_alloc: move draining pcplists to page isolation users mm, page_alloc: disable pcplists during memory offline Miaohe Lin <linmiaohe@huawei.com>: include/linux/page-flags.h: remove unused __[Set|Clear]PagePrivate "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/page-flags: fix comment mm/page_alloc: add __free_pages() documentation Zou Wei <zou_wei@huawei.com>: mm/page_alloc: mark some symbols with static keyword David Hildenbrand <david@redhat.com>: mm/page_alloc: clear all pages in post_alloc_hook() with init_on_alloc=1 Lin Feng <linf@wangsu.com>: init/main: fix broken buffer_init when DEFERRED_STRUCT_PAGE_INIT set Lorenzo Stoakes <lstoakes@gmail.com>: mm: page_alloc: refactor setup_per_zone_lowmem_reserve() Muchun Song <songmuchun@bytedance.com>: mm/page_alloc: speed up the iteration of max_order Subsystem: mm/memory-failure Oscar Salvador <osalvador@suse.de>: Patch series "HWpoison: further fixes and cleanups", v5: mm,hwpoison: drain pcplists before bailing out for non-buddy zero-refcount page mm,hwpoison: take free pages off the buddy freelists mm,hwpoison: drop unneeded pcplist draining Patch series "HWPoison: Refactor get page interface", v2: mm,hwpoison: refactor get_any_page mm,hwpoison: disable pcplists before grabbing a refcount mm,hwpoison: remove drain_all_pages from shake_page mm,memory_failure: always pin the page in madvise_inject_error mm,hwpoison: return -EBUSY when migration fails Subsystem: mm/hugetlb Hui Su <sh_def@163.com>: mm/hugetlb.c: just use put_page_testzero() instead of page_count() Ralph Campbell <rcampbell@nvidia.com>: include/linux/huge_mm.h: remove extern keyword Alex Shi <alex.shi@linux.alibaba.com>: khugepaged: add parameter explanations for kernel-doc markup Liu Xiang <liu.xiang@zlingsmart.com>: mm: hugetlb: fix type of delta parameter and related local variables in gather_surplus_pages() Oscar Salvador <osalvador@suse.de>: mm,hugetlb: remove unneeded initialization Dan Carpenter <dan.carpenter@oracle.com>: hugetlb: fix an error code in hugetlb_reserve_pages() Subsystem: mm/vmscan Johannes Weiner <hannes@cmpxchg.org>: mm: don't wake kswapd prematurely when watermark boosting is disabled Lukas Bulwahn <lukas.bulwahn@gmail.com>: mm/vmscan: drop unneeded assignment in kswapd() "logic.yu" <hymmsx.yu@gmail.com>: mm/vmscan.c: remove the filename in the top of file comment Muchun Song <songmuchun@bytedance.com>: mm/page_isolation: do not isolate the max order page Subsystem: mm/z3fold Vitaly Wool <vitaly.wool@konsulko.com>: Patch series "z3fold: stability / rt fixes": z3fold: simplify freeing slots z3fold: stricter locking and more careful reclaim z3fold: remove preempt disabled sections for RT Subsystem: mm/compaction Yanfei Xu <yanfei.xu@windriver.com>: mm/compaction: rename 'start_pfn' to 'iteration_start_pfn' in compact_zone() Hui Su <sh_def@163.com>: mm/compaction: move compaction_suitable's comment to right place mm/compaction: make defer_compaction and compaction_deferred static Subsystem: mm/oom-kill Hui Su <sh_def@163.com>: mm/oom_kill: change comment and rename is_dump_unreclaim_slabs() Subsystem: mm/migration Long Li <lonuxli.64@gmail.com>: mm/migrate.c: fix comment spelling Ralph Campbell <rcampbell@nvidia.com>: mm/migrate.c: optimize migrate_vma_pages() mmu notifier "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: support THPs in zero_user_segments Yang Shi <shy828301@gmail.com>: Patch series "mm: misc migrate cleanup and improvement", v3: mm: truncate_complete_page() does not exist any more mm: migrate: simplify the logic for handling permanent failure mm: migrate: skip shared exec THP for NUMA balancing mm: migrate: clean up migrate_prep{_local} mm: migrate: return -ENOSYS if THP migration is unsupported Stephen Zhang <starzhangzsd@gmail.com>: mm: migrate: remove unused parameter in migrate_vma_insert_page() Subsystem: mm/cma Lecopzer Chen <lecopzer.chen@mediatek.com>: mm/cma.c: remove redundant cma_mutex lock Charan Teja Reddy <charante@codeaurora.org>: mm: cma: improve pr_debug log in cma_release() Subsystem: mm/page-poison Vlastimil Babka <vbabka@suse.cz>: Patch series "cleanup page poisoning", v3: mm, page_alloc: do not rely on the order of page_poison and init_on_alloc/free parameters mm, page_poison: use static key more efficiently kernel/power: allow hibernation with page_poison sanity checking mm, page_poison: remove CONFIG_PAGE_POISONING_NO_SANITY mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO Subsystem: mm/userfaultfd Lokesh Gidra <lokeshgidra@google.com>: Patch series "Control over userfaultfd kernel-fault handling", v6: userfaultfd: add UFFD_USER_MODE_ONLY userfaultfd: add user-mode only option to unprivileged_userfaultfd sysctl knob Axel Rasmussen <axelrasmussen@google.com>: userfaultfd: selftests: make __{s,u}64 format specifiers portable Peter Xu <peterx@redhat.com>: Patch series "userfaultfd: selftests: Small fixes": userfaultfd/selftests: always dump something in modes userfaultfd/selftests: fix retval check for userfaultfd_open() userfaultfd/selftests: hint the test runner on required privilege Subsystem: mm/zswap Joe Perches <joe@perches.com>: mm/zswap: make struct kernel_param_ops definitions const YueHaibing <yuehaibing@huawei.com>: mm/zswap: fix passing zero to 'PTR_ERR' warning Barry Song <song.bao.hua@hisilicon.com>: mm/zswap: move to use crypto_acomp API for hardware acceleration Subsystem: mm/zsmalloc Miaohe Lin <linmiaohe@huawei.com>: mm/zsmalloc.c: rework the list_add code in insert_zspage() Subsystem: mm/uaccess Colin Ian King <colin.king@canonical.com>: mm/process_vm_access: remove redundant initialization of iov_r Subsystem: mm/zram Minchan Kim <minchan@kernel.org>: zram: support page writeback zram: add stat to gather incompressible pages since zram set up Rui Salvaterra <rsalvaterra@gmail.com>: zram: break the strict dependency from lzo Subsystem: mm/cleanups Mauro Carvalho Chehab <mchehab+huawei@kernel.org>: mm: fix kernel-doc markups Joe Perches <joe@perches.com>: Patch series "mm: Convert sysfs sprintf family to sysfs_emit", v2: mm: use sysfs_emit for struct kobject * uses mm: huge_memory: convert remaining use of sprintf to sysfs_emit and neatening mm:backing-dev: use sysfs_emit in macro defining functions mm: shmem: convert shmem_enabled_show to use sysfs_emit_at mm: slub: convert sysfs sprintf family to sysfs_emit/sysfs_emit_at "Gustavo A. R. Silva" <gustavoars@kernel.org>: mm: fix fall-through warnings for Clang Alexey Dobriyan <adobriyan@gmail.com>: mm: cleanup kstrto*() usage /mmap_lock.h | 107 ++ a/Documentation/admin-guide/blockdev/zram.rst | 6 a/Documentation/admin-guide/cgroup-v1/memcg_test.rst | 8 a/Documentation/admin-guide/cgroup-v1/memory.rst | 42 a/Documentation/admin-guide/cgroup-v2.rst | 11 a/Documentation/admin-guide/mm/transhuge.rst | 15 a/Documentation/admin-guide/sysctl/vm.rst | 15 a/Documentation/core-api/memory-allocation.rst | 4 a/Documentation/core-api/pin_user_pages.rst | 8 a/Documentation/dev-tools/kasan.rst | 5 a/Documentation/filesystems/tmpfs.rst | 8 a/Documentation/vm/memory-model.rst | 3 a/Documentation/vm/page_owner.rst | 12 a/arch/Kconfig | 21 a/arch/alpha/Kconfig | 8 a/arch/alpha/include/asm/mmzone.h | 14 a/arch/alpha/include/asm/page.h | 7 a/arch/alpha/include/asm/pgtable.h | 12 a/arch/alpha/include/asm/sparsemem.h | 18 a/arch/alpha/kernel/setup.c | 1 a/arch/arc/Kconfig | 3 a/arch/arc/include/asm/page.h | 20 a/arch/arc/mm/init.c | 29 a/arch/arm/Kconfig | 12 a/arch/arm/kernel/vdso.c | 9 a/arch/arm/mach-bcm/Kconfig | 1 a/arch/arm/mach-davinci/Kconfig | 1 a/arch/arm/mach-exynos/Kconfig | 1 a/arch/arm/mach-highbank/Kconfig | 1 a/arch/arm/mach-omap2/Kconfig | 1 a/arch/arm/mach-s5pv210/Kconfig | 1 a/arch/arm/mach-tango/Kconfig | 1 a/arch/arm/mm/init.c | 78 - a/arch/arm64/Kconfig | 9 a/arch/arm64/include/asm/cacheflush.h | 1 a/arch/arm64/include/asm/pgtable.h | 1 a/arch/arm64/kernel/vdso.c | 41 a/arch/arm64/mm/init.c | 68 - a/arch/arm64/mm/pageattr.c | 12 a/arch/ia64/Kconfig | 11 a/arch/ia64/include/asm/meminit.h | 2 a/arch/ia64/mm/contig.c | 88 -- a/arch/ia64/mm/discontig.c | 44 - a/arch/ia64/mm/init.c | 14 a/arch/ia64/mm/numa.c | 30 a/arch/m68k/Kconfig.cpu | 31 a/arch/m68k/include/asm/page.h | 2 a/arch/m68k/include/asm/page_mm.h | 7 a/arch/m68k/include/asm/virtconvert.h | 7 a/arch/m68k/mm/init.c | 10 a/arch/mips/vdso/genvdso.c | 4 a/arch/nds32/mm/mm-nds32.c | 6 a/arch/powerpc/Kconfig | 5 a/arch/riscv/Kconfig | 4 a/arch/riscv/include/asm/pgtable.h | 2 a/arch/riscv/include/asm/set_memory.h | 1 a/arch/riscv/mm/pageattr.c | 31 a/arch/s390/Kconfig | 4 a/arch/s390/configs/debug_defconfig | 2 a/arch/s390/configs/defconfig | 2 a/arch/s390/kernel/vdso.c | 11 a/arch/sparc/Kconfig | 4 a/arch/sparc/mm/init_64.c | 2 a/arch/x86/Kconfig | 5 a/arch/x86/entry/vdso/vma.c | 17 a/arch/x86/include/asm/set_memory.h | 1 a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 2 a/arch/x86/kernel/tboot.c | 1 a/arch/x86/mm/pat/set_memory.c | 6 a/drivers/base/node.c | 2 a/drivers/block/zram/Kconfig | 42 a/drivers/block/zram/zcomp.c | 2 a/drivers/block/zram/zram_drv.c | 29 a/drivers/block/zram/zram_drv.h | 1 a/drivers/dax/device.c | 4 a/drivers/dax/kmem.c | 2 a/drivers/dma-buf/sync_file.c | 3 a/drivers/edac/ghes_edac.c | 4 a/drivers/firmware/efi/efi.c | 1 a/drivers/gpu/drm/drm_atomic.c | 3 a/drivers/hwtracing/intel_th/msu.c | 2 a/drivers/ide/falconide.c | 2 a/drivers/ide/ide-probe.c | 3 a/drivers/misc/lkdtm/Makefile | 1 a/drivers/pinctrl/pinctrl-utils.c | 2 a/drivers/vhost/vringh.c | 3 a/drivers/virtio/virtio_balloon.c | 6 a/drivers/xen/unpopulated-alloc.c | 14 a/fs/aio.c | 5 a/fs/ntfs/file.c | 5 a/fs/ntfs/inode.c | 2 a/fs/ntfs/logfile.c | 3 a/fs/ocfs2/cluster/tcp.c | 1 a/fs/ocfs2/namei.c | 4 a/fs/proc/kcore.c | 2 a/fs/proc/meminfo.c | 2 a/fs/userfaultfd.c | 20 a/include/linux/cgroup-defs.h | 15 a/include/linux/compaction.h | 12 a/include/linux/fs.h | 2 a/include/linux/gfp.h | 2 a/include/linux/highmem.h | 19 a/include/linux/huge_mm.h | 93 -- a/include/linux/memcontrol.h | 148 --- a/include/linux/migrate.h | 4 a/include/linux/mm.h | 118 +- a/include/linux/mm_types.h | 8 a/include/linux/mmap_lock.h | 94 ++ a/include/linux/mmzone.h | 50 - a/include/linux/page-flags.h | 6 a/include/linux/page_ext.h | 8 a/include/linux/pagevec.h | 3 a/include/linux/poison.h | 4 a/include/linux/rmap.h | 1 a/include/linux/sched/mm.h | 16 a/include/linux/set_memory.h | 5 a/include/linux/shmem_fs.h | 6 a/include/linux/slab.h | 18 a/include/linux/vmalloc.h | 8 a/include/linux/vmstat.h | 104 ++ a/include/trace/events/sched.h | 84 + a/include/uapi/linux/const.h | 5 a/include/uapi/linux/ethtool.h | 2 a/include/uapi/linux/kernel.h | 9 a/include/uapi/linux/lightnvm.h | 2 a/include/uapi/linux/mroute6.h | 2 a/include/uapi/linux/netfilter/x_tables.h | 2 a/include/uapi/linux/netlink.h | 2 a/include/uapi/linux/sysctl.h | 2 a/include/uapi/linux/userfaultfd.h | 9 a/init/main.c | 6 a/ipc/shm.c | 8 a/kernel/cgroup/cgroup.c | 12 a/kernel/fork.c | 3 a/kernel/kthread.c | 29 a/kernel/power/hibernate.c | 2 a/kernel/power/power.h | 2 a/kernel/power/snapshot.c | 52 + a/kernel/ptrace.c | 2 a/kernel/workqueue.c | 3 a/lib/locking-selftest.c | 47 + a/lib/test_kasan_module.c | 29 a/mm/Kconfig | 25 a/mm/Kconfig.debug | 28 a/mm/Makefile | 4 a/mm/backing-dev.c | 8 a/mm/cma.c | 6 a/mm/compaction.c | 29 a/mm/filemap.c | 823 ++++++++++--------- a/mm/gup.c | 329 ++----- a/mm/gup_benchmark.c | 210 ---- a/mm/gup_test.c | 299 ++++++ a/mm/gup_test.h | 40 a/mm/highmem.c | 52 + a/mm/huge_memory.c | 86 + a/mm/hugetlb.c | 28 a/mm/init-mm.c | 1 a/mm/internal.h | 5 a/mm/kasan/generic.c | 3 a/mm/kasan/report.c | 4 a/mm/khugepaged.c | 58 - a/mm/ksm.c | 50 - a/mm/madvise.c | 14 a/mm/mapping_dirty_helpers.c | 6 a/mm/memblock.c | 80 + a/mm/memcontrol.c | 170 +-- a/mm/memory-failure.c | 322 +++---- a/mm/memory.c | 24 a/mm/memory_hotplug.c | 44 - a/mm/mempolicy.c | 8 a/mm/migrate.c | 183 ++-- a/mm/mm_init.c | 1 a/mm/mmap.c | 22 a/mm/mmap_lock.c | 230 +++++ a/mm/mmu_notifier.c | 7 a/mm/mmzone.c | 14 a/mm/mremap.c | 282 ++++-- a/mm/nommu.c | 8 a/mm/oom_kill.c | 14 a/mm/page_alloc.c | 517 ++++++----- a/mm/page_counter.c | 4 a/mm/page_ext.c | 10 a/mm/page_isolation.c | 18 a/mm/page_owner.c | 17 a/mm/page_poison.c | 56 - a/mm/page_vma_mapped.c | 9 a/mm/process_vm_access.c | 2 a/mm/rmap.c | 9 a/mm/shmem.c | 39 a/mm/slab.c | 10 a/mm/slab.h | 9 a/mm/slab_common.c | 10 a/mm/slob.c | 6 a/mm/slub.c | 156 +-- a/mm/swap.c | 12 a/mm/swap_state.c | 7 a/mm/swapfile.c | 14 a/mm/truncate.c | 18 a/mm/vmalloc.c | 105 +- a/mm/vmscan.c | 21 a/mm/vmstat.c | 6 a/mm/workingset.c | 8 a/mm/z3fold.c | 215 ++-- a/mm/zsmalloc.c | 11 a/mm/zswap.c | 193 +++- a/sound/core/pcm_lib.c | 4 a/tools/include/linux/poison.h | 6 a/tools/testing/selftests/vm/.gitignore | 4 a/tools/testing/selftests/vm/Makefile | 41 a/tools/testing/selftests/vm/check_config.sh | 31 a/tools/testing/selftests/vm/config | 2 a/tools/testing/selftests/vm/gup_benchmark.c | 143 --- a/tools/testing/selftests/vm/gup_test.c | 258 +++++ a/tools/testing/selftests/vm/hmm-tests.c | 10 a/tools/testing/selftests/vm/mremap_test.c | 344 +++++++ a/tools/testing/selftests/vm/run_vmtests | 51 - a/tools/testing/selftests/vm/userfaultfd.c | 94 -- 217 files changed, 4817 insertions(+), 3369 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 3:02 incoming Andrew Morton @ 2020-12-15 3:25 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 3:25 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: mm-commits, Linux-MM On Mon, Dec 14, 2020 at 7:02 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 200 patches, based on 2c85ebc57b3e1817b6ce1a6b703928e113a90442. I haven't actually processed the patches yet, but I have a question for Konstantin wrt b4. All the patches except for _one_ get a nice little green check-mark next to them when I use 'git am' on this series. The one that did not was [patch 192/200]. I have no idea why - and it doesn't matter a lot to me, it just stood out as being different. I'm assuming Andrew has started doing patch attestation, and that patch failed. But if so, maybe Konstantin wants to know what went wrong. Konstantin? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2020-12-15 3:25 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 3:25 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: mm-commits, Linux-MM On Mon, Dec 14, 2020 at 7:02 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 200 patches, based on 2c85ebc57b3e1817b6ce1a6b703928e113a90442. I haven't actually processed the patches yet, but I have a question for Konstantin wrt b4. All the patches except for _one_ get a nice little green check-mark next to them when I use 'git am' on this series. The one that did not was [patch 192/200]. I have no idea why - and it doesn't matter a lot to me, it just stood out as being different. I'm assuming Andrew has started doing patch attestation, and that patch failed. But if so, maybe Konstantin wants to know what went wrong. Konstantin? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 3:25 ` incoming Linus Torvalds @ 2020-12-15 3:30 ` Linus Torvalds -1 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 3:30 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: mm-commits, Linux-MM On Mon, Dec 14, 2020 at 7:25 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > All the patches except for _one_ get a nice little green check-mark > next to them when I use 'git am' on this series. > > The one that did not was [patch 192/200]. > > I have no idea why Hmm. It looks like that patch is the only one in the series with the ">From" marker in the commit message, from the silly "clarify that this isn't the first line in a new message in mbox format". And "b4 am" has turned the single ">" into two, making the stupid marker worse, and actually corrupting the end result. Coincidence? Or cause? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2020-12-15 3:30 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-12-15 3:30 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: mm-commits, Linux-MM On Mon, Dec 14, 2020 at 7:25 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > All the patches except for _one_ get a nice little green check-mark > next to them when I use 'git am' on this series. > > The one that did not was [patch 192/200]. > > I have no idea why Hmm. It looks like that patch is the only one in the series with the ">From" marker in the commit message, from the silly "clarify that this isn't the first line in a new message in mbox format". And "b4 am" has turned the single ">" into two, making the stupid marker worse, and actually corrupting the end result. Coincidence? Or cause? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-12-15 3:30 ` incoming Linus Torvalds (?) @ 2020-12-15 14:04 ` Konstantin Ryabitsev -1 siblings, 0 replies; 530+ messages in thread From: Konstantin Ryabitsev @ 2020-12-15 14:04 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, mm-commits, Linux-MM On Mon, Dec 14, 2020 at 07:30:54PM -0800, Linus Torvalds wrote: > > All the patches except for _one_ get a nice little green check-mark > > next to them when I use 'git am' on this series. > > > > The one that did not was [patch 192/200]. > > > > I have no idea why > > Hmm. It looks like that patch is the only one in the series with the > ">From" marker in the commit message, from the silly "clarify that > this isn't the first line in a new message in mbox format". > > And "b4 am" has turned the single ">" into two, making the stupid > marker worse, and actually corrupting the end result. It's a bug in b4 that I overlooked. Public-inbox emits mboxrd-formatted .mbox files, while Python's mailbox.mbox consumes mboxo only. The main distinction between the two is precisely that mboxrd will convert ">From " into ">>From " in an attempt to avoid corruption during escape/unescape (it didn't end up fixing the problem 100% and mostly introduced incompatibilities like this one). I have a fix in master/stable-0.6.y and I'll release a 0.6.2 before the end of the week. Thanks for the report. -K ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-11 21:35 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-11 21:35 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 8 patches, based on 33dc9614dc208291d0c4bcdeb5d30d481dcd2c4c. Subsystems affected by this patch series: mm/pagecache proc selftests kbuild mm/kasan mm/hugetlb Subsystem: mm/pagecache Andrew Morton <akpm@linux-foundation.org>: revert "mm/filemap: add static for function __add_to_page_cache_locked" Subsystem: proc Miles Chen <miles.chen@mediatek.com>: proc: use untagged_addr() for pagemap_read addresses Subsystem: selftests Arnd Bergmann <arnd@arndb.de>: selftest/fpu: avoid clang warning Subsystem: kbuild Arnd Bergmann <arnd@arndb.de>: kbuild: avoid static_assert for genksyms initramfs: fix clang build failure elfcore: fix building with clang Subsystem: mm/kasan Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>: kasan: fix object remaining in offline per-cpu quarantine Subsystem: mm/hugetlb Gerald Schaefer <gerald.schaefer@linux.ibm.com>: mm/hugetlb: clear compound_nr before freeing gigantic pages fs/proc/task_mmu.c | 8 ++++++-- include/linux/build_bug.h | 5 +++++ include/linux/elfcore.h | 22 ++++++++++++++++++++++ init/initramfs.c | 2 +- kernel/Makefile | 1 - kernel/elfcore.c | 26 -------------------------- lib/Makefile | 3 ++- mm/filemap.c | 2 +- mm/hugetlb.c | 1 + mm/kasan/quarantine.c | 39 +++++++++++++++++++++++++++++++++++++++ 10 files changed, 77 insertions(+), 32 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-12-06 6:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-12-06 6:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 12 patches, based on 33256ce194110874d4bc90078b577c59f9076c59. Subsystems affected by this patch series: lib coredump mm/memcg mm/zsmalloc mm/swap mailmap mm/selftests mm/pagecache mm/hugetlb mm/pagemap Subsystem: lib Randy Dunlap <rdunlap@infradead.org>: zlib: export S390 symbols for zlib modules Subsystem: coredump Menglong Dong <dong.menglong@zte.com.cn>: coredump: fix core_pattern parse error Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: memcg/slab: fix obj_cgroup_charge() return value handling Yang Shi <shy828301@gmail.com>: mm: list_lru: set shrinker map bit when child nr_items is not zero Subsystem: mm/zsmalloc Minchan Kim <minchan@kernel.org>: mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING Subsystem: mm/swap Qian Cai <qcai@redhat.com>: mm/swapfile: do not sleep with a spin lock held Subsystem: mailmap Uwe Kleine-König <u.kleine-koenig@pengutronix.de>: mailmap: add two more addresses of Uwe Kleine-König Subsystem: mm/selftests Xingxing Su <suxingxing@loongson.cn>: tools/testing/selftests/vm: fix build error Axel Rasmussen <axelrasmussen@google.com>: userfaultfd: selftests: fix SIGSEGV if huge mmap fails Subsystem: mm/pagecache Alex Shi <alex.shi@linux.alibaba.com>: mm/filemap: add static for function __add_to_page_cache_locked Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: hugetlb_cgroup: fix offline of hugetlb cgroup with reservations Subsystem: mm/pagemap Liu Zixian <liuzixian4@huawei.com>: mm/mmap.c: fix mmap return value when vma is merged after call_mmap() .mailmap | 2 + arch/arm/configs/omap2plus_defconfig | 1 fs/coredump.c | 3 + include/linux/zsmalloc.h | 1 lib/zlib_dfltcc/dfltcc_inflate.c | 3 + mm/Kconfig | 13 ------- mm/filemap.c | 2 - mm/hugetlb_cgroup.c | 8 +--- mm/list_lru.c | 10 ++--- mm/mmap.c | 26 ++++++-------- mm/slab.h | 40 +++++++++++++--------- mm/swapfile.c | 4 +- mm/zsmalloc.c | 54 ------------------------------- tools/testing/selftests/vm/Makefile | 4 ++ tools/testing/selftests/vm/userfaultfd.c | 25 +++++++++----- 15 files changed, 75 insertions(+), 121 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-11-22 6:16 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-11-22 6:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 8 patches, based on a349e4c659609fd20e4beea89e5c4a4038e33a95. Subsystems affected by this patch series: mm/madvise kbuild mm/pagemap mm/readahead mm/memcg mm/userfaultfd vfs-akpm mm/madvise Subsystem: mm/madvise Eric Dumazet <edumazet@google.com>: mm/madvise: fix memory leak from process_madvise Subsystem: kbuild Nick Desaulniers <ndesaulniers@google.com>: compiler-clang: remove version check for BPF Tracing Subsystem: mm/pagemap Dan Williams <dan.j.williams@intel.com>: mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports Subsystem: mm/readahead "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: fix readahead_page_batch for retry entries Subsystem: mm/memcg Muchun Song <songmuchun@bytedance.com>: mm: memcg/slab: fix root memcg vmstats Subsystem: mm/userfaultfd Gerald Schaefer <gerald.schaefer@linux.ibm.com>: mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault() Subsystem: vfs-akpm Yicong Yang <yangyicong@hisilicon.com>: libfs: fix error cast of negative value in simple_attr_write() Subsystem: mm/madvise "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: fix madvise WILLNEED performance problem arch/ia64/include/asm/sparsemem.h | 6 ++++++ arch/powerpc/include/asm/mmzone.h | 5 +++++ arch/powerpc/include/asm/sparsemem.h | 5 ++--- arch/powerpc/mm/mem.c | 1 + arch/x86/include/asm/sparsemem.h | 10 ++++++++++ arch/x86/mm/numa.c | 2 ++ drivers/dax/Kconfig | 1 - fs/libfs.c | 6 ++++-- include/linux/compiler-clang.h | 2 ++ include/linux/memory_hotplug.h | 14 -------------- include/linux/numa.h | 30 +++++++++++++++++++++++++++++- include/linux/pagemap.h | 2 ++ mm/huge_memory.c | 9 ++++----- mm/madvise.c | 4 +--- mm/memcontrol.c | 9 +++++++-- mm/memory_hotplug.c | 18 ------------------ 16 files changed, 75 insertions(+), 49 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-11-14 6:51 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-11-14 6:51 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 14 patches, based on 9e6a39eae450b81c8b2c8cbbfbdf8218e9b40c81. Subsystems affected by this patch series: mm/migration mm/vmscan mailmap mm/slub mm/gup kbuild reboot kernel/watchdog mm/memcg mm/hugetlbfs panic ocfs2 Subsystem: mm/migration Zi Yan <ziy@nvidia.com>: mm/compaction: count pages and stop correctly during page isolation mm/compaction: stop isolation if too many pages are isolated and we have pages to migrate Subsystem: mm/vmscan Nicholas Piggin <npiggin@gmail.com>: mm/vmscan: fix NR_ISOLATED_FILE corruption on 64-bit Subsystem: mailmap Dmitry Baryshkov <dbaryshkov@gmail.com>: mailmap: fix entry for Dmitry Baryshkov/Eremin-Solenikov Subsystem: mm/slub Laurent Dufour <ldufour@linux.ibm.com>: mm/slub: fix panic in slab_alloc_node() Subsystem: mm/gup Jason Gunthorpe <jgg@nvidia.com>: mm/gup: use unpin_user_pages() in __gup_longterm_locked() Subsystem: kbuild Arvind Sankar <nivedita@alum.mit.edu>: compiler.h: fix barrier_data() on clang Subsystem: reboot Matteo Croce <mcroce@microsoft.com>: Patch series "fix parsing of reboot= cmdline", v3: Revert "kernel/reboot.c: convert simple_strtoul to kstrtoint" reboot: fix overflow parsing reboot cpu number Subsystem: kernel/watchdog Santosh Sivaraj <santosh@fossix.org>: kernel/watchdog: fix watchdog_allowed_mask not used warning Subsystem: mm/memcg Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: fix missing wakeup polling thread Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: hugetlbfs: fix anon huge page migration race Subsystem: panic Christophe Leroy <christophe.leroy@csgroup.eu>: panic: don't dump stack twice on warn Subsystem: ocfs2 Wengang Wang <wen.gang.wang@oracle.com>: ocfs2: initialize ip_next_orphan .mailmap | 5 +- fs/ocfs2/super.c | 1 include/asm-generic/barrier.h | 1 include/linux/compiler-clang.h | 6 -- include/linux/compiler-gcc.h | 19 -------- include/linux/compiler.h | 18 +++++++- include/linux/memcontrol.h | 11 ++++- kernel/panic.c | 3 - kernel/reboot.c | 28 ++++++------ kernel/watchdog.c | 4 - mm/compaction.c | 12 +++-- mm/gup.c | 14 ++++-- mm/hugetlb.c | 90 ++--------------------------------------- mm/memory-failure.c | 36 +++++++--------- mm/migrate.c | 46 +++++++++++--------- mm/rmap.c | 5 -- mm/slub.c | 2 mm/vmscan.c | 5 +- 18 files changed, 119 insertions(+), 187 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-11-02 1:06 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-11-02 1:06 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 15 patches, based on 3cea11cd5e3b00d91caf0b4730194039b45c5891. Subsystems affected by this patch series: mm/memremap mm/memcg mm/slab-generic mm/kasan mm/mempolicy signals lib mm/pagecache kthread mm/oom-kill mm/pagemap epoll core-kernel Subsystem: mm/memremap Ralph Campbell <rcampbell@nvidia.com>: mm/mremap_pages: fix static key devmap_managed_key updates Subsystem: mm/memcg Mike Kravetz <mike.kravetz@oracle.com>: hugetlb_cgroup: fix reservation accounting zhongjiang-ali <zhongjiang-ali@linux.alibaba.com>: mm: memcontrol: correct the NR_ANON_THPS counter of hierarchical memcg Roman Gushchin <guro@fb.com>: mm: memcg: link page counters to root if use_hierarchy is false Subsystem: mm/slab-generic Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: adopt KUNIT tests to SW_TAGS mode Subsystem: mm/mempolicy Shijie Luo <luoshijie1@huawei.com>: mm: mempolicy: fix potential pte_unmap_unlock pte error Subsystem: signals Oleg Nesterov <oleg@redhat.com>: ptrace: fix task_join_group_stop() for the case when current is traced Subsystem: lib Vasily Gorbik <gor@linux.ibm.com>: lib/crc32test: remove extra local_irq_disable/enable Subsystem: mm/pagecache Jason Yan <yanaijie@huawei.com>: mm/truncate.c: make __invalidate_mapping_pages() static Subsystem: kthread Zqiang <qiang.zhang@windriver.com>: kthread_worker: prevent queuing delayed work from timer_fn when it is being canceled Subsystem: mm/oom-kill Charles Haithcock <chaithco@redhat.com>: mm, oom: keep oom_adj under or at upper limit when printing Subsystem: mm/pagemap Jason Gunthorpe <jgg@nvidia.com>: mm: always have io_remap_pfn_range() set pgprot_decrypted() Subsystem: epoll Soheil Hassas Yeganeh <soheil@google.com>: epoll: check ep_events_available() upon timeout epoll: add a selftest for epoll timeout race Subsystem: core-kernel Lukas Bulwahn <lukas.bulwahn@gmail.com>: kernel/hung_task.c: make type annotations consistent fs/eventpoll.c | 16 + fs/proc/base.c | 2 include/linux/mm.h | 9 include/linux/pgtable.h | 4 kernel/hung_task.c | 3 kernel/kthread.c | 3 kernel/signal.c | 19 - lib/crc32test.c | 4 lib/test_kasan.c | 149 +++++++--- mm/hugetlb.c | 20 - mm/memcontrol.c | 25 + mm/mempolicy.c | 6 mm/memremap.c | 39 +- mm/truncate.c | 2 tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 95 ++++++ 15 files changed, 290 insertions(+), 106 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-10-17 23:13 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-10-17 23:13 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 40 patches, based on 9d9af1007bc08971953ae915d88dc9bb21344b53. Subsystems affected by this patch series: ia64 mm/memcg mm/migration mm/pagemap mm/gup mm/madvise mm/vmalloc misc Subsystem: ia64 Krzysztof Kozlowski <krzk@kernel.org>: ia64: fix build error with !COREDUMP Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm, memcg: rework remote charging API to support nesting Patch series "mm: kmem: kernel memory accounting in an interrupt context": mm: kmem: move memcg_kmem_bypass() calls to get_mem/obj_cgroup_from_current() mm: kmem: remove redundant checks from get_obj_cgroup_from_current() mm: kmem: prepare remote memcg charging infra for interrupt contexts mm: kmem: enable kernel memcg accounting from interrupt contexts Subsystem: mm/migration Joonsoo Kim <iamjoonsoo.kim@lge.com>: mm/memory-failure: remove a wrapper for alloc_migration_target() mm/memory_hotplug: remove a wrapper for alloc_migration_target() Miaohe Lin <linmiaohe@huawei.com>: mm/migrate: avoid possible unnecessary process right check in kernel_move_pages() Subsystem: mm/pagemap "Liam R. Howlett" <Liam.Howlett@Oracle.com>: mm/mmap: add inline vma_next() for readability of mmap code mm/mmap: add inline munmap_vma_range() for code readability Subsystem: mm/gup Jann Horn <jannh@google.com>: mm/gup_benchmark: take the mmap lock around GUP binfmt_elf: take the mmap lock around find_extend_vma() mm/gup: assert that the mmap lock is held in __get_user_pages() John Hubbard <jhubbard@nvidia.com>: Patch series "selftests/vm: gup_test, hmm-tests, assorted improvements", v2: mm/gup_benchmark: rename to mm/gup_test selftests/vm: use a common gup_test.h selftests/vm: rename run_vmtests --> run_vmtests.sh selftests/vm: minor cleanup: Makefile and gup_test.c selftests/vm: only some gup_test items are really benchmarks selftests/vm: gup_test: introduce the dump_pages() sub-test selftests/vm: run_vmtests.sh: update and clean up gup_test invocation selftests/vm: hmm-tests: remove the libhugetlbfs dependency selftests/vm: 10x speedup for hmm-tests Subsystem: mm/madvise Minchan Kim <minchan@kernel.org>: Patch series "introduce memory hinting API for external process", v9: mm/madvise: pass mm to do_madvise pid: move pidfd_get_pid() to pid.c mm/madvise: introduce process_madvise() syscall: an external memory hinting API Subsystem: mm/vmalloc "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "remove alloc_vm_area", v4: mm: update the documentation for vfree Christoph Hellwig <hch@lst.de>: mm: add a VM_MAP_PUT_PAGES flag for vmap mm: add a vmap_pfn function mm: allow a NULL fn callback in apply_to_page_range zsmalloc: switch from alloc_vm_area to get_vm_area drm/i915: use vmap in shmem_pin_map drm/i915: stop using kmap in i915_gem_object_map drm/i915: use vmap in i915_gem_object_map xen/xenbus: use apply_to_page_range directly in xenbus_map_ring_pv x86/xen: open code alloc_vm_area in arch_gnttab_valloc mm: remove alloc_vm_area Patch series "two small vmalloc cleanups": mm: cleanup the gfp_mask handling in __vmalloc_area_node mm: remove the filename in the top of file comment in vmalloc.c Subsystem: misc Tian Tao <tiantao6@hisilicon.com>: mm: remove duplicate include statement in mmu.c Documentation/core-api/pin_user_pages.rst | 8 arch/alpha/kernel/syscalls/syscall.tbl | 1 arch/arm/mm/mmu.c | 1 arch/arm/tools/syscall.tbl | 1 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 2 arch/ia64/kernel/Makefile | 2 arch/ia64/kernel/syscalls/syscall.tbl | 1 arch/m68k/kernel/syscalls/syscall.tbl | 1 arch/microblaze/kernel/syscalls/syscall.tbl | 1 arch/mips/kernel/syscalls/syscall_n32.tbl | 1 arch/mips/kernel/syscalls/syscall_n64.tbl | 1 arch/mips/kernel/syscalls/syscall_o32.tbl | 1 arch/parisc/kernel/syscalls/syscall.tbl | 1 arch/powerpc/kernel/syscalls/syscall.tbl | 1 arch/s390/configs/debug_defconfig | 2 arch/s390/configs/defconfig | 2 arch/s390/kernel/syscalls/syscall.tbl | 1 arch/sh/kernel/syscalls/syscall.tbl | 1 arch/sparc/kernel/syscalls/syscall.tbl | 1 arch/x86/entry/syscalls/syscall_32.tbl | 1 arch/x86/entry/syscalls/syscall_64.tbl | 1 arch/x86/xen/grant-table.c | 27 +- arch/xtensa/kernel/syscalls/syscall.tbl | 1 drivers/gpu/drm/i915/Kconfig | 1 drivers/gpu/drm/i915/gem/i915_gem_pages.c | 136 ++++------ drivers/gpu/drm/i915/gt/shmem_utils.c | 78 +----- drivers/xen/xenbus/xenbus_client.c | 30 +- fs/binfmt_elf.c | 3 fs/buffer.c | 6 fs/io_uring.c | 2 fs/notify/fanotify/fanotify.c | 5 fs/notify/inotify/inotify_fsnotify.c | 5 include/linux/memcontrol.h | 12 include/linux/mm.h | 2 include/linux/pid.h | 1 include/linux/sched/mm.h | 43 +-- include/linux/syscalls.h | 2 include/linux/vmalloc.h | 7 include/uapi/asm-generic/unistd.h | 4 kernel/exit.c | 19 - kernel/pid.c | 19 + kernel/sys_ni.c | 1 mm/Kconfig | 24 + mm/Makefile | 2 mm/gup.c | 2 mm/gup_benchmark.c | 225 ------------------ mm/gup_test.c | 295 +++++++++++++++++++++-- mm/gup_test.h | 40 ++- mm/madvise.c | 125 ++++++++-- mm/memcontrol.c | 83 ++++-- mm/memory-failure.c | 18 - mm/memory.c | 16 - mm/memory_hotplug.c | 46 +-- mm/migrate.c | 71 +++-- mm/mmap.c | 74 ++++- mm/nommu.c | 7 mm/percpu.c | 3 mm/slab.h | 3 mm/vmalloc.c | 147 +++++------ mm/zsmalloc.c | 10 tools/testing/selftests/vm/.gitignore | 3 tools/testing/selftests/vm/Makefile | 40 ++- tools/testing/selftests/vm/check_config.sh | 31 ++ tools/testing/selftests/vm/config | 2 tools/testing/selftests/vm/gup_benchmark.c | 143 ----------- tools/testing/selftests/vm/gup_test.c | 260 ++++++++++++++++++-- tools/testing/selftests/vm/hmm-tests.c | 12 tools/testing/selftests/vm/run_vmtests | 334 -------------------------- tools/testing/selftests/vm/run_vmtests.sh | 350 +++++++++++++++++++++++++++- 70 files changed, 1580 insertions(+), 1224 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-10-16 2:40 Andrew Morton 2020-10-16 3:03 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-10-16 2:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - most of the rest of mm/ - various other subsystems 156 patches, based on 578a7155c5a1894a789d4ece181abf9d25dc6b0d. Subsystems affected by this patch series: mm/dax mm/debug mm/thp mm/readahead mm/page-poison mm/util mm/memory-hotplug mm/zram mm/cleanups misc core-kernel get_maintainer MAINTAINERS lib bitops checkpatch binfmt ramfs autofs nilfs rapidio panic relay kgdb ubsan romfs fault-injection Subsystem: mm/dax Dan Williams <dan.j.williams@intel.com>: device-dax/kmem: fix resource release Subsystem: mm/debug "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "mm/debug_vm_pgtable fixes", v4: powerpc/mm: add DEBUG_VM WARN for pmd_clear powerpc/mm: move setting pte specific flags to pfn_pte mm/debug_vm_pgtable/ppc64: avoid setting top bits in radom value mm/debug_vm_pgtables/hugevmap: use the arch helper to identify huge vmap support. mm/debug_vm_pgtable/savedwrite: enable savedwrite test with CONFIG_NUMA_BALANCING mm/debug_vm_pgtable/THP: mark the pte entry huge before using set_pmd/pud_at mm/debug_vm_pgtable/set_pte/pmd/pud: don't use set_*_at to update an existing pte entry mm/debug_vm_pgtable/locks: move non page table modifying test together mm/debug_vm_pgtable/locks: take correct page table lock mm/debug_vm_pgtable/thp: use page table depost/withdraw with THP mm/debug_vm_pgtable/pmd_clear: don't use pmd/pud_clear on pte entries mm/debug_vm_pgtable/hugetlb: disable hugetlb test on ppc64 mm/debug_vm_pgtable: avoid none pte in pte_clear_test mm/debug_vm_pgtable: avoid doing memory allocation with pgtable_t mapped. Subsystem: mm/thp "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Fix read-only THP for non-tmpfs filesystems": XArray: add xa_get_order XArray: add xas_split mm/filemap: fix storing to a THP shadow entry Patch series "Remove assumptions of THP size": mm/filemap: fix page cache removal for arbitrary sized THPs mm/memory: remove page fault assumption of compound page size mm/page_owner: change split_page_owner to take a count "Kirill A. Shutemov" <kirill@shutemov.name>: mm/huge_memory: fix total_mapcount assumption of page size mm/huge_memory: fix split assumption of page size "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/huge_memory: fix page_trans_huge_mapcount assumption of THP size mm/huge_memory: fix can_split_huge_page assumption of THP size mm/rmap: fix assumptions of THP size mm/truncate: fix truncation for pages of arbitrary size mm/page-writeback: support tail pages in wait_for_stable_page mm/vmscan: allow arbitrary sized pages to be paged out fs: add a filesystem flag for THPs fs: do not update nr_thps for mappings which support THPs Huang Ying <ying.huang@intel.com>: mm: fix a race during THP splitting Subsystem: mm/readahead "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Readahead patches for 5.9/5.10": mm/readahead: add DEFINE_READAHEAD mm/readahead: make page_cache_ra_unbounded take a readahead_control mm/readahead: make do_page_cache_ra take a readahead_control David Howells <dhowells@redhat.com>: mm/readahead: make ondemand_readahead take a readahead_control mm/readahead: pass readahead_control to force_page_cache_ra "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/readahead: add page_cache_sync_ra and page_cache_async_ra David Howells <dhowells@redhat.com>: mm/filemap: fold ra_submit into do_sync_mmap_readahead mm/readahead: pass a file_ra_state into force_page_cache_ra Subsystem: mm/page-poison Naoya Horiguchi <naoya.horiguchi@nec.com>: Patch series "HWPOISON: soft offline rework", v7: mm,hwpoison: cleanup unused PageHuge() check mm, hwpoison: remove recalculating hpage mm,hwpoison-inject: don't pin for hwpoison_filter Oscar Salvador <osalvador@suse.de>: mm,hwpoison: unexport get_hwpoison_page and make it static mm,hwpoison: refactor madvise_inject_error mm,hwpoison: kill put_hwpoison_page mm,hwpoison: unify THP handling for hard and soft offline mm,hwpoison: rework soft offline for free pages mm,hwpoison: rework soft offline for in-use pages mm,hwpoison: refactor soft_offline_huge_page and __soft_offline_page mm,hwpoison: return 0 if the page is already poisoned in soft-offline Naoya Horiguchi <naoya.horiguchi@nec.com>: mm,hwpoison: introduce MF_MSG_UNSPLIT_THP mm,hwpoison: double-check page count in __get_any_page() Oscar Salvador <osalvador@suse.de>: mm,hwpoison: try to narrow window race for free pages Mateusz Nosek <mateusznosek0@gmail.com>: mm/page_poison.c: replace bool variable with static key Miaohe Lin <linmiaohe@huawei.com>: mm/vmstat.c: use helper macro abs() Subsystem: mm/util Bartosz Golaszewski <bgolaszewski@baylibre.com>: mm/util.c: update the kerneldoc for kstrdup_const() Jann Horn <jannh@google.com>: mm/mmu_notifier: fix mmget() assert in __mmu_interval_notifier_insert Subsystem: mm/memory-hotplug David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: online_pages()/offline_pages() cleanups", v2: mm/memory_hotplug: inline __offline_pages() into offline_pages() mm/memory_hotplug: enforce section granularity when onlining/offlining mm/memory_hotplug: simplify page offlining mm/page_alloc: simplify __offline_isolated_pages() mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages() mm/page_isolation: simplify return value of start_isolate_page_range() mm/memory_hotplug: simplify page onlining mm/page_alloc: drop stale pageblock comment in memmap_init_zone*() mm: pass migratetype into memmap_init_zone() and move_pfn_range_to_zone() mm/memory_hotplug: mark pageblocks MIGRATE_ISOLATE while onlining memory Patch series "selective merging of system ram resources", v4: kernel/resource: make release_mem_region_adjustable() never fail kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED mm/memory_hotplug: guard more declarations by CONFIG_MEMORY_HOTPLUG mm/memory_hotplug: prepare passing flags to add_memory() and friends mm/memory_hotplug: MEMHP_MERGE_RESOURCE to specify merging of System RAM resources virtio-mem: try to merge system ram resources xen/balloon: try to merge system ram resources hv_balloon: try to merge system ram resources kernel/resource: make iomem_resource implicit in release_mem_region_adjustable() Laurent Dufour <ldufour@linux.ibm.com>: mm: don't panic when links can't be created in sysfs David Hildenbrand <david@redhat.com>: Patch series "mm: place pages to the freelist tail when onlining and undoing isolation", v2: mm/page_alloc: convert "report" flag of __free_one_page() to a proper flag mm/page_alloc: place pages to tail in __putback_isolated_page() mm/page_alloc: move pages to tail in move_to_free_list() mm/page_alloc: place pages to tail in __free_pages_core() mm/memory_hotplug: update comment regarding zone shuffling Subsystem: mm/zram Douglas Anderson <dianders@chromium.org>: zram: failing to decompress is WARN_ON worthy Subsystem: mm/cleanups YueHaibing <yuehaibing@huawei.com>: mm/slab.h: remove duplicate include Wei Yang <richard.weiyang@linux.alibaba.com>: mm/page_reporting.c: drop stale list head check in page_reporting_cycle Ira Weiny <ira.weiny@intel.com>: mm/highmem.c: clean up endif comments Yu Zhao <yuzhao@google.com>: mm: use self-explanatory macros rather than "2" Miaohe Lin <linmiaohe@huawei.com>: mm: fix some broken comments Chen Tao <chentao3@hotmail.com>: mm: fix some comments formatting Xiaofei Tan <tanxiaofei@huawei.com>: mm/workingset.c: fix some doc warnings Miaohe Lin <linmiaohe@huawei.com>: mm: use helper function put_write_access() Mike Rapoport <rppt@linux.ibm.com>: include/linux/mmzone.h: remove unused early_pfn_valid() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: rename page_order() to buddy_order() Subsystem: misc Randy Dunlap <rdunlap@infradead.org>: fs: configfs: delete repeated words in comments Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: split out min()/max() et al. helpers Subsystem: core-kernel Liao Pingfang <liao.pingfang@zte.com.cn>: kernel/sys.c: replace do_brk with do_brk_flags in comment of prctl_set_mm_map() Randy Dunlap <rdunlap@infradead.org>: kernel/: fix repeated words in comments kernel: acct.c: fix some kernel-doc nits Subsystem: get_maintainer Joe Perches <joe@perches.com>: get_maintainer: add test for file in VCS Subsystem: MAINTAINERS Joe Perches <joe@perches.com>: get_maintainer: exclude MAINTAINERS file(s) from --git-fallback Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>: MAINTAINERS: jarkko.sakkinen@linux.intel.com -> jarkko@kernel.org Subsystem: lib Randy Dunlap <rdunlap@infradead.org>: lib: bitmap: delete duplicated words lib: libcrc32c: delete duplicated words lib: decompress_bunzip2: delete duplicated words lib: dynamic_queue_limits: delete duplicated words + fix typo lib: earlycpio: delete duplicated words lib: radix-tree: delete duplicated words lib: syscall: delete duplicated words lib: test_sysctl: delete duplicated words lib/mpi/mpi-bit.c: fix spello of "functions" Stephen Boyd <swboyd@chromium.org>: lib/idr.c: document calling context for IDA APIs mustn't use locks lib/idr.c: document that ida_simple_{get,remove}() are deprecated Christophe JAILLET <christophe.jaillet@wanadoo.fr>: lib/scatterlist.c: avoid a double memset Miaohe Lin <linmiaohe@huawei.com>: lib/percpu_counter.c: use helper macro abs() Andy Shevchenko <andriy.shevchenko@linux.intel.com>: include/linux/list.h: add a macro to test if entry is pointing to the head Dan Carpenter <dan.carpenter@oracle.com>: lib/test_hmm.c: fix an error code in dmirror_allocate_chunk() Tobias Jordan <kernel@cdqe.de>: lib/crc32.c: fix trivial typo in preprocessor condition Subsystem: bitops Wei Yang <richard.weiyang@linux.alibaba.com>: bitops: simplify get_count_order_long() bitops: use the same mechanism for get_count_order[_long] Subsystem: checkpatch Jerome Forissier <jerome@forissier.org>: checkpatch: add --kconfig-prefix Joe Perches <joe@perches.com>: checkpatch: move repeated word test checkpatch: add test for comma use that should be semicolon Rikard Falkeborn <rikard.falkeborn@gmail.com>: const_structs.checkpatch: add phy_ops Nicolas Boichat <drinkcat@chromium.org>: checkpatch: warn if trace_printk and friends are called Rikard Falkeborn <rikard.falkeborn@gmail.com>: const_structs.checkpatch: add pinctrl_ops and pinmux_ops Joe Perches <joe@perches.com>: checkpatch: warn on self-assignments checkpatch: allow not using -f with files that are in git Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: extend author Signed-off-by check for split From: header Joe Perches <joe@perches.com>: checkpatch: emit a warning on embedded filenames Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: fix multi-statement macro checks for while blocks. Łukasz Stelmach <l.stelmach@samsung.com>: checkpatch: fix false positive on empty block comment lines Dwaipayan Ray <dwaipayanray1@gmail.com>: checkpatch: add new warnings to author signoff checks. Subsystem: binfmt Chris Kennelly <ckennelly@google.com>: Patch series "Selecting Load Addresses According to p_align", v3: fs/binfmt_elf: use PT_LOAD p_align values for suitable start address tools/testing/selftests: add self-test for verifying load alignment Jann Horn <jannh@google.com>: Patch series "Fix ELF / FDPIC ELF core dumping, and use mmap_lock properly in there", v5: binfmt_elf_fdpic: stop using dump_emit() on user pointers on !MMU coredump: let dump_emit() bail out on short writes coredump: refactor page range dumping into common helper coredump: rework elf/elf_fdpic vma_dump_size() into common helper binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot mm/gup: take mmap_lock in get_dump_page() mm: remove the now-unnecessary mmget_still_valid() hack Subsystem: ramfs Matthew Wilcox (Oracle) <willy@infradead.org>: ramfs: fix nommu mmap with gaps in the page cache Subsystem: autofs Matthew Wilcox <willy@infradead.org>: autofs: harden ioctl table Subsystem: nilfs Wang Hai <wanghai38@huawei.com>: nilfs2: fix some kernel-doc warnings for nilfs2 Subsystem: rapidio Souptick Joarder <jrdr.linux@gmail.com>: rapidio: fix error handling path Jing Xiangfeng <jingxiangfeng@huawei.com>: rapidio: fix the missed put_device() for rio_mport_add_riodev Subsystem: panic Alexey Kardashevskiy <aik@ozlabs.ru>: panic: dump registers on panic_on_warn Subsystem: relay Sudip Mukherjee <sudipm.mukherjee@gmail.com>: kernel/relay.c: drop unneeded initialization Subsystem: kgdb Ritesh Harjani <riteshh@linux.ibm.com>: scripts/gdb/proc: add struct mount & struct super_block addr in lx-mounts command scripts/gdb/tasks: add headers and improve spacing format Subsystem: ubsan Elena Petrova <lenaptr@google.com>: sched.h: drop in_ubsan field when UBSAN is in trap mode George Popescu <georgepope@android.com>: ubsan: introduce CONFIG_UBSAN_LOCAL_BOUNDS for Clang Subsystem: romfs Libing Zhou <libing.zhou@nokia-sbell.com>: ROMFS: support inode blocks calculation Subsystem: fault-injection Albert van der Linde <alinde@google.com>: Patch series "add fault injection to user memory access", v3: lib, include/linux: add usercopy failure capability lib, uaccess: add failure injection to usercopy functions .mailmap | 1 Documentation/admin-guide/kernel-parameters.txt | 1 Documentation/core-api/xarray.rst | 14 Documentation/fault-injection/fault-injection.rst | 7 MAINTAINERS | 6 arch/ia64/mm/init.c | 4 arch/powerpc/include/asm/book3s/64/pgtable.h | 29 + arch/powerpc/include/asm/nohash/pgtable.h | 5 arch/powerpc/mm/pgtable.c | 5 arch/powerpc/platforms/powernv/memtrace.c | 2 arch/powerpc/platforms/pseries/hotplug-memory.c | 2 drivers/acpi/acpi_memhotplug.c | 3 drivers/base/memory.c | 3 drivers/base/node.c | 33 +- drivers/block/zram/zram_drv.c | 2 drivers/dax/kmem.c | 50 ++- drivers/hv/hv_balloon.c | 4 drivers/infiniband/core/uverbs_main.c | 3 drivers/rapidio/devices/rio_mport_cdev.c | 18 - drivers/s390/char/sclp_cmd.c | 2 drivers/vfio/pci/vfio_pci.c | 38 +- drivers/virtio/virtio_mem.c | 5 drivers/xen/balloon.c | 4 fs/autofs/dev-ioctl.c | 8 fs/binfmt_elf.c | 267 +++------------- fs/binfmt_elf_fdpic.c | 176 ++-------- fs/configfs/dir.c | 2 fs/configfs/file.c | 2 fs/coredump.c | 238 +++++++++++++- fs/ext4/verity.c | 4 fs/f2fs/verity.c | 4 fs/inode.c | 2 fs/nilfs2/bmap.c | 2 fs/nilfs2/cpfile.c | 6 fs/nilfs2/page.c | 1 fs/nilfs2/sufile.c | 4 fs/proc/task_mmu.c | 18 - fs/ramfs/file-nommu.c | 2 fs/romfs/super.c | 1 fs/userfaultfd.c | 28 - include/linux/bitops.h | 13 include/linux/blkdev.h | 1 include/linux/bvec.h | 6 include/linux/coredump.h | 13 include/linux/fault-inject-usercopy.h | 22 + include/linux/fs.h | 28 - include/linux/idr.h | 13 include/linux/ioport.h | 15 include/linux/jiffies.h | 3 include/linux/kernel.h | 150 --------- include/linux/list.h | 29 + include/linux/memory_hotplug.h | 42 +- include/linux/minmax.h | 153 +++++++++ include/linux/mm.h | 5 include/linux/mmzone.h | 17 - include/linux/node.h | 16 include/linux/nodemask.h | 2 include/linux/page-flags.h | 6 include/linux/page_owner.h | 6 include/linux/pagemap.h | 111 ++++++ include/linux/sched.h | 2 include/linux/sched/mm.h | 25 - include/linux/uaccess.h | 12 include/linux/vmstat.h | 2 include/linux/xarray.h | 22 + include/ras/ras_event.h | 3 kernel/acct.c | 10 kernel/cgroup/cpuset.c | 2 kernel/dma/direct.c | 2 kernel/fork.c | 4 kernel/futex.c | 2 kernel/irq/timings.c | 2 kernel/jump_label.c | 2 kernel/kcsan/encoding.h | 2 kernel/kexec_core.c | 2 kernel/kexec_file.c | 2 kernel/kthread.c | 2 kernel/livepatch/state.c | 2 kernel/panic.c | 12 kernel/pid_namespace.c | 2 kernel/power/snapshot.c | 2 kernel/range.c | 3 kernel/relay.c | 2 kernel/resource.c | 114 +++++-- kernel/smp.c | 2 kernel/sys.c | 2 kernel/user_namespace.c | 2 lib/Kconfig.debug | 7 lib/Kconfig.ubsan | 14 lib/Makefile | 1 lib/bitmap.c | 2 lib/crc32.c | 2 lib/decompress_bunzip2.c | 2 lib/dynamic_queue_limits.c | 4 lib/earlycpio.c | 2 lib/fault-inject-usercopy.c | 39 ++ lib/find_bit.c | 1 lib/hexdump.c | 1 lib/idr.c | 9 lib/iov_iter.c | 5 lib/libcrc32c.c | 2 lib/math/rational.c | 2 lib/math/reciprocal_div.c | 1 lib/mpi/mpi-bit.c | 2 lib/percpu_counter.c | 2 lib/radix-tree.c | 2 lib/scatterlist.c | 2 lib/strncpy_from_user.c | 3 lib/syscall.c | 2 lib/test_hmm.c | 2 lib/test_sysctl.c | 2 lib/test_xarray.c | 65 ++++ lib/usercopy.c | 5 lib/xarray.c | 208 ++++++++++++ mm/Kconfig | 2 mm/compaction.c | 6 mm/debug_vm_pgtable.c | 267 ++++++++-------- mm/filemap.c | 58 ++- mm/gup.c | 73 ++-- mm/highmem.c | 4 mm/huge_memory.c | 47 +- mm/hwpoison-inject.c | 18 - mm/internal.h | 47 +- mm/khugepaged.c | 2 mm/madvise.c | 52 --- mm/memory-failure.c | 357 ++++++++++------------ mm/memory.c | 7 mm/memory_hotplug.c | 223 +++++-------- mm/memremap.c | 3 mm/migrate.c | 11 mm/mmap.c | 7 mm/mmu_notifier.c | 2 mm/page-writeback.c | 1 mm/page_alloc.c | 289 +++++++++++------ mm/page_isolation.c | 16 mm/page_owner.c | 10 mm/page_poison.c | 20 - mm/page_reporting.c | 4 mm/readahead.c | 174 ++++------ mm/rmap.c | 10 mm/shmem.c | 2 mm/shuffle.c | 2 mm/slab.c | 2 mm/slab.h | 1 mm/slub.c | 2 mm/sparse.c | 2 mm/swap_state.c | 2 mm/truncate.c | 6 mm/util.c | 3 mm/vmscan.c | 5 mm/vmstat.c | 8 mm/workingset.c | 2 scripts/Makefile.ubsan | 10 scripts/checkpatch.pl | 238 ++++++++++---- scripts/const_structs.checkpatch | 3 scripts/gdb/linux/proc.py | 15 scripts/gdb/linux/tasks.py | 9 scripts/get_maintainer.pl | 9 tools/testing/selftests/exec/.gitignore | 1 tools/testing/selftests/exec/Makefile | 9 tools/testing/selftests/exec/load_address.c | 68 ++++ 161 files changed, 2532 insertions(+), 1864 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-10-16 2:40 incoming Andrew Morton @ 2020-10-16 3:03 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-10-16 3:03 UTC (permalink / raw) To: Linus Torvalds, mm-commits, linux-mm And... I forgot to set in-reply-to :( Shall resend, omitting linux-mm. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-10-13 23:46 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-10-13 23:46 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 181 patches, based on 029f56db6ac248769f2c260bfaf3c3c0e23e904c. Subsystems affected by this patch series: kbuild scripts ntfs ocfs2 vfs mm/slab mm/slub mm/kmemleak mm/dax mm/debug mm/pagecache mm/fadvise mm/gup mm/swap mm/memremap mm/memcg mm/selftests mm/pagemap mm/mincore mm/hmm mm/dma mm/memory-failure mm/vmalloc mm/documentation mm/kasan mm/pagealloc mm/hugetlb mm/vmscan mm/z3fold mm/zbud mm/compaction mm/mempolicy mm/mempool mm/memblock mm/oom-kill mm/migration Subsystem: kbuild Nick Desaulniers <ndesaulniers@google.com>: Patch series "set clang minimum version to 10.0.1", v3: compiler-clang: add build check for clang 10.0.1 Revert "kbuild: disable clang's default use of -fmerge-all-constants" Revert "arm64: bti: Require clang >= 10.0.1 for in-kernel BTI support" Revert "arm64: vdso: Fix compilation with clang older than 8" Partially revert "ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer" Marco Elver <elver@google.com>: kasan: remove mentions of unsupported Clang versions Nick Desaulniers <ndesaulniers@google.com>: compiler-gcc: improve version error compiler.h: avoid escaped section names export.h: fix section name for CONFIG_TRIM_UNUSED_KSYMS for Clang Lukas Bulwahn <lukas.bulwahn@gmail.com>: kbuild: doc: describe proper script invocation Subsystem: scripts Wang Qing <wangqing@vivo.com>: scripts/spelling.txt: increase error-prone spell checking Naoki Hayama <naoki.hayama@lineo.co.jp>: scripts/spelling.txt: add "arbitrary" typo Borislav Petkov <bp@suse.de>: scripts/decodecode: add the capability to supply the program counter Subsystem: ntfs Rustam Kovhaev <rkovhaev@gmail.com>: ntfs: add check for mft record size in superblock Subsystem: ocfs2 Randy Dunlap <rdunlap@infradead.org>: ocfs2: delete repeated words in comments Gang He <ghe@suse.com>: ocfs2: fix potential soft lockup during fstrim Subsystem: vfs Randy Dunlap <rdunlap@infradead.org>: fs/xattr.c: fix kernel-doc warnings for setxattr & removexattr Luo Jiaxing <luojiaxing@huawei.com>: fs_parse: mark fs_param_bad_value() as static Subsystem: mm/slab Mateusz Nosek <mateusznosek0@gmail.com>: mm/slab.c: clean code by removing redundant if condition tangjianqiang <wyqt1985@gmail.com>: include/linux/slab.h: fix a typo error in comment Subsystem: mm/slub Abel Wu <wuyun.wu@huawei.com>: mm/slub.c: branch optimization in free slowpath mm/slub: fix missing ALLOC_SLOWPATH stat when bulk alloc mm/slub: make add_full() condition more explicit Subsystem: mm/kmemleak Davidlohr Bueso <dave@stgolabs.net>: mm/kmemleak: rely on rcu for task stack scanning Hui Su <sh_def@163.com>: mm,kmemleak-test.c: move kmemleak-test.c to samples dir Subsystem: mm/dax Dan Williams <dan.j.williams@intel.com>: Patch series "device-dax: Support sub-dividing soft-reserved ranges", v5: x86/numa: cleanup configuration dependent command-line options x86/numa: add 'nohmat' option efi/fake_mem: arrange for a resource entry per efi_fake_mem instance ACPI: HMAT: refactor hmat_register_target_device to hmem_register_device resource: report parent to walk_iomem_res_desc() callback mm/memory_hotplug: introduce default phys_to_target_node() implementation ACPI: HMAT: attach a device for each soft-reserved range device-dax: drop the dax_region.pfn_flags attribute device-dax: move instance creation parameters to 'struct dev_dax_data' device-dax: make pgmap optional for instance creation device-dax/kmem: introduce dax_kmem_range() device-dax/kmem: move resource name tracking to drvdata device-dax/kmem: replace release_resource() with release_mem_region() device-dax: add an allocation interface for device-dax instances device-dax: introduce 'struct dev_dax' typed-driver operations device-dax: introduce 'seed' devices drivers/base: make device_find_child_by_name() compatible with sysfs inputs device-dax: add resize support mm/memremap_pages: convert to 'struct range' mm/memremap_pages: support multiple ranges per invocation device-dax: add dis-contiguous resource support device-dax: introduce 'mapping' devices Joao Martins <joao.m.martins@oracle.com>: device-dax: make align a per-device property Dan Williams <dan.j.williams@intel.com>: device-dax: add an 'align' attribute Joao Martins <joao.m.martins@oracle.com>: dax/hmem: introduce dax_hmem.region_idle parameter device-dax: add a range mapping allocation attribute Subsystem: mm/debug "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/debug.c: do not dereference i_ino blindly John Hubbard <jhubbard@nvidia.com>: mm, dump_page: rename head_mapcount() --> head_compound_mapcount() Subsystem: mm/pagecache "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Return head pages from find_*_entry", v2: mm: factor find_get_incore_page out of mincore_page mm: use find_get_incore_page in memcontrol mm: optimise madvise WILLNEED proc: optimise smaps for shmem entries i915: use find_lock_page instead of find_lock_entry mm: convert find_get_entry to return the head page mm/shmem: return head page from find_lock_entry mm: add find_lock_head mm/filemap: fix filemap_map_pages for THP Subsystem: mm/fadvise Yafang Shao <laoar.shao@gmail.com>: mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED Subsystem: mm/gup Barry Song <song.bao.hua@hisilicon.com>: mm/gup_benchmark: update the documentation in Kconfig mm/gup_benchmark: use pin_user_pages for FOLL_LONGTERM flag mm/gup: don't permit users to call get_user_pages with FOLL_LONGTERM John Hubbard <jhubbard@nvidia.com>: mm/gup: protect unpin_user_pages() against npages==-ERRNO Subsystem: mm/swap Gao Xiang <hsiangkao@redhat.com>: swap: rename SWP_FS to SWAP_FS_OPS to avoid ambiguity Yu Zhao <yuzhao@google.com>: mm: remove activate_page() from unuse_pte() mm: remove superfluous __ClearPageActive() Miaohe Lin <linmiaohe@huawei.com>: mm/swap.c: fix confusing comment in release_pages() mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache() mm/page_io.c: remove useless out label in __swap_writepage() mm/swap.c: fix incomplete comment in lru_cache_add_inactive_or_unevictable() mm/swapfile.c: remove unnecessary goto out in _swap_info_get() mm/swapfile.c: fix potential memory leak in sys_swapon Subsystem: mm/memremap Ira Weiny <ira.weiny@intel.com>: mm/memremap.c: convert devmap static branch to {inc,dec} Subsystem: mm/memcg "Gustavo A. R. Silva" <gustavoars@kernel.org>: mm: memcontrol: use flex_array_size() helper in memcpy() mm: memcontrol: use the preferred form for passing the size of a structure type Roman Gushchin <guro@fb.com>: mm: memcg/slab: fix racy access to page->mem_cgroup in mem_cgroup_from_obj() Miaohe Lin <linmiaohe@huawei.com>: mm: memcontrol: correct the comment of mem_cgroup_iter() Waiman Long <longman@redhat.com>: Patch series "mm/memcg: Miscellaneous cleanups and streamlining", v2: mm/memcg: clean up obsolete enum charge_type mm/memcg: simplify mem_cgroup_get_max() mm/memcg: unify swap and memsw page counters Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: add the missing numa_stat interface for cgroup v2 Miaohe Lin <linmiaohe@huawei.com>: mm/page_counter: correct the obsolete func name in the comment of page_counter_try_charge() mm: memcontrol: reword obsolete comment of mem_cgroup_unmark_under_oom() Bharata B Rao <bharata@linux.ibm.com>: mm: memcg/slab: uncharge during kmem_cache_free_bulk() Ralph Campbell <rcampbell@nvidia.com>: mm/memcg: fix device private memcg accounting Subsystem: mm/selftests John Hubbard <jhubbard@nvidia.com>: Patch series "selftests/vm: fix some minor aggravating factors in the Makefile": selftests/vm: fix false build success on the second and later attempts selftests/vm: fix incorrect gcc invocation in some cases Subsystem: mm/pagemap Matthew Wilcox <willy@infradead.org>: mm: account PMD tables like PTE tables Yanfei Xu <yanfei.xu@windriver.com>: mm/memory.c: fix typo in __do_fault() comment mm/memory.c: replace vmf->vma with variable vma Wei Yang <richard.weiyang@linux.alibaba.com>: mm/mmap: rename __vma_unlink_common() to __vma_unlink() mm/mmap: leverage vma_rb_erase_ignore() to implement vma_rb_erase() Chinwen Chang <chinwen.chang@mediatek.com>: Patch series "Try to release mmap_lock temporarily in smaps_rollup", v4: mmap locking API: add mmap_lock_is_contended() mm: smaps*: extend smap_gather_stats to support specified beginning mm: proc: smaps_rollup: do not stall write attempts on mmap_lock "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Fix PageDoubleMap": mm: move PageDoubleMap bit mm: simplify PageDoubleMap with PF_SECOND policy Wei Yang <richard.weiyang@linux.alibaba.com>: mm/mmap: leave adjust_next as virtual address instead of page frame number Randy Dunlap <rdunlap@infradead.org>: mm/memory.c: fix spello of "function" Wei Yang <richard.weiyang@linux.alibaba.com>: mm/mmap: not necessary to check mapping separately mm/mmap: check on file instead of the rb_root_cached of its address_space Miaohe Lin <linmiaohe@huawei.com>: mm: use helper function mapping_allow_writable() mm/mmap.c: use helper function allow_write_access() in __remove_shared_vm_struct() Liao Pingfang <liao.pingfang@zte.com.cn>: mm/mmap.c: replace do_brk with do_brk_flags in comment of insert_vm_struct() Peter Xu <peterx@redhat.com>: mm: remove src/dst mm parameter in copy_page_range() Subsystem: mm/mincore yuleixzhang <yulei.kernel@gmail.com>: include/linux/huge_mm.h: remove mincore_huge_pmd declaration Subsystem: mm/hmm Ralph Campbell <rcampbell@nvidia.com>: tools/testing/selftests/vm/hmm-tests.c: use the new SKIP() macro lib/test_hmm.c: remove unused dmirror_zero_page Subsystem: mm/dma Andy Shevchenko <andriy.shevchenko@linux.intel.com>: mm/dmapool.c: replace open-coded list_for_each_entry_safe() mm/dmapool.c: replace hard coded function name with __func__ Subsystem: mm/memory-failure Xianting Tian <tian.xianting@h3c.com>: mm/memory-failure: do pgoff calculation before for_each_process() Alex Shi <alex.shi@linux.alibaba.com>: mm/memory-failure.c: remove unused macro `writeback' Subsystem: mm/vmalloc Hui Su <sh_def@163.com>: mm/vmalloc.c: update the comment in __vmalloc_area_node() mm/vmalloc.c: fix the comment of find_vm_area Subsystem: mm/documentation Alexander Gordeev <agordeev@linux.ibm.com>: docs/vm: fix 'mm_count' vs 'mm_users' counter confusion Subsystem: mm/kasan Patricia Alfonso <trishalfonso@google.com>: Patch series "KASAN-KUnit Integration", v14: kasan/kunit: add KUnit Struct to Current Task KUnit: KASAN Integration KASAN: port KASAN Tests to KUnit KASAN: Testing Documentation David Gow <davidgow@google.com>: mm: kasan: do not panic if both panic_on_warn and kasan_multishot set Subsystem: mm/pagealloc David Hildenbrand <david@redhat.com>: Patch series "mm / virtio-mem: support ZONE_MOVABLE", v5: mm/page_alloc: tweak comments in has_unmovable_pages() mm/page_isolation: exit early when pageblock is isolated in set_migratetype_isolate() mm/page_isolation: drop WARN_ON_ONCE() in set_migratetype_isolate() mm/page_isolation: cleanup set_migratetype_isolate() virtio-mem: don't special-case ZONE_MOVABLE mm: document semantics of ZONE_MOVABLE Li Xinhai <lixinhai.lxh@gmail.com>: mm, isolation: avoid checking unmovable pages across pageblock boundary Mateusz Nosek <mateusznosek0@gmail.com>: mm/page_alloc.c: clean code by removing unnecessary initialization mm/page_alloc.c: micro-optimization remove unnecessary branch mm/page_alloc.c: fix early params garbage value accesses mm/page_alloc.c: clean code by merging two functions Yanfei Xu <yanfei.xu@windriver.com>: mm/page_alloc.c: __perform_reclaim should return 'unsigned long' Mateusz Nosek <mateusznosek0@gmail.com>: mmzone: clean code by removing unused macro parameter Ralph Campbell <rcampbell@nvidia.com>: mm: move call to compound_head() in release_pages() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/page_alloc.c: fix freeing non-compound pages Michal Hocko <mhocko@suse.com>: include/linux/gfp.h: clarify usage of GFP_ATOMIC in !preemptible contexts Subsystem: mm/hugetlb Baoquan He <bhe@redhat.com>: Patch series "mm/hugetlb: Small cleanup and improvement", v2: mm/hugetlb.c: make is_hugetlb_entry_hwpoisoned return bool mm/hugetlb.c: remove the unnecessary non_swap_entry() doc/vm: fix typo in the hugetlb admin documentation Wei Yang <richard.weiyang@linux.alibaba.com>: Patch series "mm/hugetlb: code refine and simplification", v4: mm/hugetlb: not necessary to coalesce regions recursively mm/hugetlb: remove VM_BUG_ON(!nrg) in get_file_region_entry_from_cache() mm/hugetlb: use list_splice to merge two list at once mm/hugetlb: count file_region to be added when regions_needed != NULL mm/hugetlb: a page from buddy is not on any list mm/hugetlb: narrow the hugetlb_lock protection area during preparing huge page mm/hugetlb: take the free hpage during the iteration directly Mike Kravetz <mike.kravetz@oracle.com>: hugetlb: add lockdep check for i_mmap_rwsem held in huge_pmd_share Subsystem: mm/vmscan Chunxin Zang <zangchunxin@bytedance.com>: mm/vmscan: fix infinite loop in drop_slab_node Hui Su <sh_def@163.com>: mm/vmscan: fix comments for isolate_lru_page() Subsystem: mm/z3fold Hui Su <sh_def@163.com>: mm/z3fold.c: use xx_zalloc instead xx_alloc and memset Subsystem: mm/zbud Xiang Chen <chenxiang66@hisilicon.com>: mm/zbud: remove redundant initialization Subsystem: mm/compaction Mateusz Nosek <mateusznosek0@gmail.com>: mm/compaction.c: micro-optimization remove unnecessary branch include/linux/compaction.h: clean code by removing unused enum value John Hubbard <jhubbard@nvidia.com>: selftests/vm: 8x compaction_test speedup Subsystem: mm/mempolicy Wei Yang <richard.weiyang@linux.alibaba.com>: mm/mempolicy: remove or narrow the lock on current mm: remove unused alloc_page_vma_node() Subsystem: mm/mempool Miaohe Lin <linmiaohe@huawei.com>: mm/mempool: add 'else' to split mutually exclusive case Subsystem: mm/memblock Mike Rapoport <rppt@linux.ibm.com>: Patch series "memblock: seasonal cleaning^w cleanup", v3: KVM: PPC: Book3S HV: simplify kvm_cma_reserve() dma-contiguous: simplify cma_early_percent_memory() arm, xtensa: simplify initialization of high memory pages arm64: numa: simplify dummy_numa_init() h8300, nds32, openrisc: simplify detection of memory extents riscv: drop unneeded node initialization mircoblaze: drop unneeded NUMA and sparsemem initializations memblock: make for_each_memblock_type() iterator private memblock: make memblock_debug and related functionality private memblock: reduce number of parameters in for_each_mem_range() arch, mm: replace for_each_memblock() with for_each_mem_pfn_range() arch, drivers: replace for_each_membock() with for_each_mem_range() x86/setup: simplify initrd relocation and reservation x86/setup: simplify reserve_crashkernel() memblock: remove unused memblock_mem_size() memblock: implement for_each_reserved_mem_region() using __next_mem_region() memblock: use separate iterators for memory and reserved regions Subsystem: mm/oom-kill Suren Baghdasaryan <surenb@google.com>: mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary Subsystem: mm/migration Ralph Campbell <rcampbell@nvidia.com>: mm/migrate: remove cpages-- in migrate_vma_finalize() mm/migrate: remove obsolete comment about device public .clang-format | 7 Documentation/admin-guide/cgroup-v2.rst | 69 + Documentation/admin-guide/mm/hugetlbpage.rst | 2 Documentation/dev-tools/kasan.rst | 74 + Documentation/dev-tools/kmemleak.rst | 2 Documentation/kbuild/makefiles.rst | 20 Documentation/vm/active_mm.rst | 2 Documentation/x86/x86_64/boot-options.rst | 4 MAINTAINERS | 2 Makefile | 9 arch/arm/Kconfig | 2 arch/arm/include/asm/tlb.h | 1 arch/arm/kernel/setup.c | 18 arch/arm/mm/init.c | 59 - arch/arm/mm/mmu.c | 39 arch/arm/mm/pmsa-v7.c | 23 arch/arm/mm/pmsa-v8.c | 17 arch/arm/xen/mm.c | 7 arch/arm64/Kconfig | 2 arch/arm64/kernel/machine_kexec_file.c | 6 arch/arm64/kernel/setup.c | 4 arch/arm64/kernel/vdso/Makefile | 7 arch/arm64/mm/init.c | 11 arch/arm64/mm/kasan_init.c | 10 arch/arm64/mm/mmu.c | 11 arch/arm64/mm/numa.c | 15 arch/c6x/kernel/setup.c | 9 arch/h8300/kernel/setup.c | 8 arch/microblaze/mm/init.c | 23 arch/mips/cavium-octeon/dma-octeon.c | 14 arch/mips/kernel/setup.c | 31 arch/mips/netlogic/xlp/setup.c | 2 arch/nds32/kernel/setup.c | 8 arch/openrisc/kernel/setup.c | 9 arch/openrisc/mm/init.c | 8 arch/powerpc/kernel/fadump.c | 61 - arch/powerpc/kexec/file_load_64.c | 16 arch/powerpc/kvm/book3s_hv_builtin.c | 12 arch/powerpc/kvm/book3s_hv_uvmem.c | 14 arch/powerpc/mm/book3s64/hash_utils.c | 16 arch/powerpc/mm/book3s64/radix_pgtable.c | 10 arch/powerpc/mm/kasan/kasan_init_32.c | 8 arch/powerpc/mm/mem.c | 31 arch/powerpc/mm/numa.c | 7 arch/powerpc/mm/pgtable_32.c | 8 arch/riscv/mm/init.c | 36 arch/riscv/mm/kasan_init.c | 10 arch/s390/kernel/setup.c | 27 arch/s390/mm/page-states.c | 6 arch/s390/mm/vmem.c | 7 arch/sh/mm/init.c | 9 arch/sparc/mm/init_64.c | 12 arch/x86/include/asm/numa.h | 8 arch/x86/kernel/e820.c | 16 arch/x86/kernel/setup.c | 56 - arch/x86/mm/numa.c | 13 arch/x86/mm/numa_emulation.c | 3 arch/x86/xen/enlighten_pv.c | 2 arch/xtensa/mm/init.c | 55 - drivers/acpi/numa/hmat.c | 76 - drivers/acpi/numa/srat.c | 9 drivers/base/core.c | 2 drivers/bus/mvebu-mbus.c | 12 drivers/dax/Kconfig | 6 drivers/dax/Makefile | 3 drivers/dax/bus.c | 1237 +++++++++++++++++++++++---- drivers/dax/bus.h | 34 drivers/dax/dax-private.h | 74 + drivers/dax/device.c | 164 +-- drivers/dax/hmem.c | 56 - drivers/dax/hmem/Makefile | 8 drivers/dax/hmem/device.c | 100 ++ drivers/dax/hmem/hmem.c | 93 +- drivers/dax/kmem.c | 236 ++--- drivers/dax/pmem/compat.c | 2 drivers/dax/pmem/core.c | 36 drivers/firmware/efi/x86_fake_mem.c | 12 drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 4 drivers/gpu/drm/nouveau/nouveau_dmem.c | 15 drivers/irqchip/irq-gic-v3-its.c | 2 drivers/nvdimm/badrange.c | 26 drivers/nvdimm/claim.c | 13 drivers/nvdimm/nd.h | 3 drivers/nvdimm/pfn_devs.c | 13 drivers/nvdimm/pmem.c | 27 drivers/nvdimm/region.c | 21 drivers/pci/p2pdma.c | 12 drivers/virtio/virtio_mem.c | 47 - drivers/xen/unpopulated-alloc.c | 45 fs/fs_parser.c | 2 fs/ntfs/inode.c | 6 fs/ocfs2/alloc.c | 6 fs/ocfs2/localalloc.c | 2 fs/proc/base.c | 3 fs/proc/task_mmu.c | 104 +- fs/xattr.c | 22 include/acpi/acpi_numa.h | 14 include/kunit/test.h | 5 include/linux/acpi.h | 2 include/linux/compaction.h | 3 include/linux/compiler-clang.h | 8 include/linux/compiler-gcc.h | 2 include/linux/compiler.h | 2 include/linux/dax.h | 8 include/linux/export.h | 2 include/linux/fs.h | 4 include/linux/gfp.h | 6 include/linux/huge_mm.h | 3 include/linux/kasan.h | 6 include/linux/memblock.h | 90 + include/linux/memcontrol.h | 13 include/linux/memory_hotplug.h | 23 include/linux/memremap.h | 15 include/linux/mm.h | 36 include/linux/mmap_lock.h | 5 include/linux/mmzone.h | 37 include/linux/numa.h | 11 include/linux/oom.h | 1 include/linux/page-flags.h | 42 include/linux/pagemap.h | 43 include/linux/range.h | 6 include/linux/sched.h | 4 include/linux/sched/coredump.h | 1 include/linux/slab.h | 2 include/linux/swap.h | 10 include/linux/swap_slots.h | 2 kernel/dma/contiguous.c | 11 kernel/fork.c | 25 kernel/resource.c | 11 lib/Kconfig.debug | 9 lib/Kconfig.kasan | 31 lib/Makefile | 5 lib/kunit/test.c | 13 lib/test_free_pages.c | 42 lib/test_hmm.c | 65 - lib/test_kasan.c | 732 ++++++--------- lib/test_kasan_module.c | 111 ++ mm/Kconfig | 4 mm/Makefile | 1 mm/compaction.c | 5 mm/debug.c | 18 mm/dmapool.c | 46 - mm/fadvise.c | 9 mm/filemap.c | 78 - mm/gup.c | 44 mm/gup_benchmark.c | 23 mm/huge_memory.c | 4 mm/hugetlb.c | 100 +- mm/internal.h | 3 mm/kasan/report.c | 34 mm/kmemleak-test.c | 99 -- mm/kmemleak.c | 8 mm/madvise.c | 21 mm/memblock.c | 102 -- mm/memcontrol.c | 262 +++-- mm/memory-failure.c | 5 mm/memory.c | 147 +-- mm/memory_hotplug.c | 10 mm/mempolicy.c | 8 mm/mempool.c | 18 mm/memremap.c | 344 ++++--- mm/migrate.c | 3 mm/mincore.c | 28 mm/mmap.c | 45 mm/oom_kill.c | 2 mm/page_alloc.c | 82 - mm/page_counter.c | 2 mm/page_io.c | 14 mm/page_isolation.c | 41 mm/shmem.c | 19 mm/slab.c | 4 mm/slab.h | 50 - mm/slub.c | 33 mm/sparse.c | 10 mm/swap.c | 14 mm/swap_slots.c | 3 mm/swap_state.c | 38 mm/swapfile.c | 12 mm/truncate.c | 58 - mm/vmalloc.c | 6 mm/vmscan.c | 5 mm/z3fold.c | 3 mm/zbud.c | 1 samples/Makefile | 1 samples/kmemleak/Makefile | 3 samples/kmemleak/kmemleak-test.c | 99 ++ scripts/decodecode | 29 scripts/spelling.txt | 4 tools/testing/nvdimm/dax-dev.c | 28 tools/testing/nvdimm/test/iomap.c | 2 tools/testing/selftests/vm/Makefile | 17 tools/testing/selftests/vm/compaction_test.c | 11 tools/testing/selftests/vm/gup_benchmark.c | 14 tools/testing/selftests/vm/hmm-tests.c | 4 194 files changed, 4273 insertions(+), 2777 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-10-11 6:15 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-10-11 6:15 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 5 patches, based on da690031a5d6d50a361e3f19f3eeabd086a6f20d. Subsystems affected by this patch series: MAINTAINERS mm/pagemap mm/swap mm/hugetlb Subsystem: MAINTAINERS Kees Cook <keescook@chromium.org>: MAINTAINERS: change hardening mailing list Antoine Tenart <atenart@kernel.org>: MAINTAINERS: Antoine Tenart's email address Subsystem: mm/pagemap Miaohe Lin <linmiaohe@huawei.com>: mm: mmap: Fix general protection fault in unlink_file_vma() Subsystem: mm/swap Minchan Kim <minchan@kernel.org>: mm: validate inode in mapping_set_error() Subsystem: mm/hugetlb Vijay Balakrishna <vijayb@linux.microsoft.com>: mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged .mailmap | 4 +++- MAINTAINERS | 8 ++++---- include/linux/khugepaged.h | 5 +++++ include/linux/pagemap.h | 3 ++- mm/khugepaged.c | 13 +++++++++++-- mm/mmap.c | 6 +++++- mm/page_alloc.c | 3 +++ 7 files changed, 33 insertions(+), 9 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-10-03 5:20 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-10-03 5:20 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 3 patches, based on d3d45f8220d60a0b2aaaacf8fb2be4e6ffd9008e. Subsystems affected by this patch series: mm/slub mm/cma scripts Subsystem: mm/slub Eric Farman <farman@linux.ibm.com>: mm, slub: restore initial kmem_cache flags Subsystem: mm/cma Joonsoo Kim <iamjoonsoo.kim@lge.com>: mm/page_alloc: handle a missing case for memalloc_nocma_{save/restore} APIs Subsystem: scripts Eric Biggers <ebiggers@google.com>: scripts/spelling.txt: fix malformed entry mm/page_alloc.c | 19 ++++++++++++++++--- mm/slub.c | 6 +----- scripts/spelling.txt | 2 +- 3 files changed, 18 insertions(+), 9 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-09-26 4:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-09-26 4:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 9 patches, based on 7c7ec3226f5f33f9c050d85ec20f18419c622ad6. Subsystems affected by this patch series: mm/thp mm/memcg mm/gup mm/migration lib x86 mm/memory-hotplug Subsystem: mm/thp Gao Xiang <hsiangkao@redhat.com>: mm, THP, swap: fix allocating cluster for swapfile by mistake Subsystem: mm/memcg Muchun Song <songmuchun@bytedance.com>: mm: memcontrol: fix missing suffix of workingset_restore Subsystem: mm/gup Vasily Gorbik <gor@linux.ibm.com>: mm/gup: fix gup_fast with dynamic page table folding Subsystem: mm/migration Zi Yan <ziy@nvidia.com>: mm/migrate: correct thp migration stats Subsystem: lib Nick Desaulniers <ndesaulniers@google.com>: lib/string.c: implement stpcpy Jason Yan <yanaijie@huawei.com>: lib/memregion.c: include memregion.h Subsystem: x86 Mikulas Patocka <mpatocka@redhat.com>: arch/x86/lib/usercopy_64.c: fix __copy_user_flushcache() cache writeback Subsystem: mm/memory-hotplug Laurent Dufour <ldufour@linux.ibm.com>: Patch series "mm: fix memory to node bad links in sysfs", v3: mm: replace memmap_context by meminit_context mm: don't rely on system state to detect hot-plug operations Documentation/admin-guide/cgroup-v2.rst | 25 ++++++--- arch/ia64/mm/init.c | 6 +- arch/s390/include/asm/pgtable.h | 42 +++++++++++---- arch/x86/lib/usercopy_64.c | 2 drivers/base/node.c | 85 ++++++++++++++++++++------------ include/linux/mm.h | 2 include/linux/mmzone.h | 11 +++- include/linux/node.h | 11 ++-- include/linux/pgtable.h | 10 +++ lib/memregion.c | 1 lib/string.c | 24 +++++++++ mm/gup.c | 18 +++--- mm/memcontrol.c | 4 - mm/memory_hotplug.c | 5 + mm/migrate.c | 7 +- mm/page_alloc.c | 10 +-- mm/swapfile.c | 2 17 files changed, 181 insertions(+), 84 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-09-19 4:19 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-09-19 4:19 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 15 patches, based on 92ab97adeefccf375de7ebaad9d5b75d4125fe8b. Subsystems affected by this patch series: mailmap mm/hotfixes mm/thp mm/memory-hotplug misc kcsan Subsystem: mailmap Kees Cook <keescook@chromium.org>: mailmap: add older email addresses for Kees Cook Subsystem: mm/hotfixes Hugh Dickins <hughd@google.com>: Patch series "mm: fixes to past from future testing": ksm: reinstate memcg charge on copied pages mm: migration of hugetlbfs page skip memcg shmem: shmem_writepage() split unlikely i915 THP mm: fix check_move_unevictable_pages() on THP mlock: fix unevictable_pgs event counts on THP Byron Stanoszek <gandalf@winds.org>: tmpfs: restore functionality of nr_inodes=0 Muchun Song <songmuchun@bytedance.com>: kprobes: fix kill kprobe which has been marked as gone Subsystem: mm/thp Ralph Campbell <rcampbell@nvidia.com>: mm/thp: fix __split_huge_pmd_locked() for migration PMD Christophe Leroy <christophe.leroy@csgroup.eu>: selftests/vm: fix display of page size in map_hugetlb Subsystem: mm/memory-hotplug Pavel Tatashin <pasha.tatashin@soleen.com>: mm/memory_hotplug: drain per-cpu pages again during memory offline Subsystem: misc Tobias Klauser <tklauser@distanz.ch>: ftrace: let ftrace_enable_sysctl take a kernel pointer buffer stackleak: let stack_erasing_sysctl take a kernel pointer buffer fs/fs-writeback.c: adjust dirtytime_interval_handler definition to match prototype Subsystem: kcsan Changbin Du <changbin.du@gmail.com>: kcsan: kconfig: move to menu 'Generic Kernel Debugging Instruments' .mailmap | 4 ++ fs/fs-writeback.c | 2 - include/linux/ftrace.h | 3 -- include/linux/stackleak.h | 2 - kernel/kprobes.c | 9 +++++- kernel/stackleak.c | 2 - kernel/trace/ftrace.c | 3 -- lib/Kconfig.debug | 4 -- mm/huge_memory.c | 42 ++++++++++++++++--------------- mm/ksm.c | 4 ++ mm/memory_hotplug.c | 14 ++++++++++ mm/migrate.c | 3 +- mm/mlock.c | 24 +++++++++++------ mm/page_isolation.c | 8 +++++ mm/shmem.c | 20 +++++++++++--- mm/swap.c | 6 ++-- mm/vmscan.c | 10 +++++-- tools/testing/selftests/vm/map_hugetlb.c | 2 - 18 files changed, 111 insertions(+), 51 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-09-04 23:34 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-09-04 23:34 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 19 patches, based on 59126901f200f5fc907153468b03c64e0081b6e6. Subsystems affected by this patch series: mm/memcg mm/slub MAINTAINERS mm/pagemap ipc fork checkpatch mm/madvise mm/migration mm/hugetlb lib Subsystem: mm/memcg Michal Hocko <mhocko@suse.com>: memcg: fix use-after-free in uncharge_batch Xunlei Pang <xlpang@linux.alibaba.com>: mm: memcg: fix memcg reclaim soft lockup Subsystem: mm/slub Eugeniu Rosca <erosca@de.adit-jv.com>: mm: slub: fix conversion of freelist_corrupted() Subsystem: MAINTAINERS Robert Richter <rric@kernel.org>: MAINTAINERS: update Cavium/Marvell entries Nick Desaulniers <ndesaulniers@google.com>: MAINTAINERS: add LLVM maintainers Randy Dunlap <rdunlap@infradead.org>: MAINTAINERS: IA64: mark Status as Odd Fixes only Subsystem: mm/pagemap Joerg Roedel <jroedel@suse.de>: mm: track page table modifications in __apply_to_page_range() Subsystem: ipc Tobias Klauser <tklauser@distanz.ch>: ipc: adjust proc_ipc_sem_dointvec definition to match prototype Subsystem: fork Tobias Klauser <tklauser@distanz.ch>: fork: adjust sysctl_max_threads definition to match prototype Subsystem: checkpatch Mrinal Pandey <mrinalmni@gmail.com>: checkpatch: fix the usage of capture group ( ... ) Subsystem: mm/madvise Yang Shi <shy828301@gmail.com>: mm: madvise: fix vma user-after-free Subsystem: mm/migration Alistair Popple <alistair@popple.id.au>: mm/migrate: fixup setting UFFD_WP flag mm/rmap: fixup copying of soft dirty and uffd ptes Ralph Campbell <rcampbell@nvidia.com>: Patch series "mm/migrate: preserve soft dirty in remove_migration_pte()": mm/migrate: remove unnecessary is_zone_device_page() check mm/migrate: preserve soft dirty in remove_migration_pte() Subsystem: mm/hugetlb Li Xinhai <lixinhai.lxh@gmail.com>: mm/hugetlb: try preferred node first when alloc gigantic page from cma Muchun Song <songmuchun@bytedance.com>: mm/hugetlb: fix a race between hugetlb sysctl handlers David Howells <dhowells@redhat.com>: mm/khugepaged.c: fix khugepaged's request size in collapse_file Subsystem: lib Jason Gunthorpe <jgg@nvidia.com>: include/linux/log2.h: add missing () around n in roundup_pow_of_two() MAINTAINERS | 32 ++++++++++++++++---------------- include/linux/log2.h | 2 +- ipc/ipc_sysctl.c | 2 +- kernel/fork.c | 2 +- mm/hugetlb.c | 49 +++++++++++++++++++++++++++++++++++++------------ mm/khugepaged.c | 2 +- mm/madvise.c | 2 +- mm/memcontrol.c | 6 ++++++ mm/memory.c | 37 ++++++++++++++++++++++++------------- mm/migrate.c | 31 +++++++++++++++++++------------ mm/rmap.c | 9 +++++++-- mm/slub.c | 12 ++++++------ mm/vmscan.c | 8 ++++++++ scripts/checkpatch.pl | 4 ++-- 14 files changed, 130 insertions(+), 68 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-08-21 0:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-08-21 0:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 11 patches, based on 7eac66d0456fe12a462e5c14c68e97c7460989da. Subsystems affected by this patch series: misc mm/hugetlb mm/vmalloc mm/misc romfs relay uprobes squashfs mm/cma mm/pagealloc Subsystem: misc Nick Desaulniers <ndesaulniers@google.com>: mailmap: add Andi Kleen Subsystem: mm/hugetlb Xu Wang <vulab@iscas.ac.cn>: hugetlb_cgroup: convert comma to semicolon Hugh Dickins <hughd@google.com>: khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter() Subsystem: mm/vmalloc "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/vunmap: add cond_resched() in vunmap_pmd_range Subsystem: mm/misc Leon Romanovsky <leonro@nvidia.com>: mm/rodata_test.c: fix missing function declaration Subsystem: romfs Jann Horn <jannh@google.com>: romfs: fix uninitialized memory leak in romfs_dev_read() Subsystem: relay Wei Yongjun <weiyongjun1@huawei.com>: kernel/relay.c: fix memleak on destroy relay channel Subsystem: uprobes Hugh Dickins <hughd@google.com>: uprobes: __replace_page() avoid BUG in munlock_vma_page() Subsystem: squashfs Phillip Lougher <phillip@squashfs.org.uk>: squashfs: avoid bio_alloc() failure with 1Mbyte blocks Subsystem: mm/cma Doug Berger <opendmb@gmail.com>: mm: include CMA pages in lowmem_reserve at boot Subsystem: mm/pagealloc Charan Teja Reddy <charante@codeaurora.org>: mm, page_alloc: fix core hung in free_pcppages_bulk() .mailmap | 1 + fs/romfs/storage.c | 4 +--- fs/squashfs/block.c | 6 +++++- kernel/events/uprobes.c | 2 +- kernel/relay.c | 1 + mm/hugetlb_cgroup.c | 4 ++-- mm/khugepaged.c | 2 +- mm/page_alloc.c | 7 ++++++- mm/rodata_test.c | 1 + mm/vmalloc.c | 2 ++ 10 files changed, 21 insertions(+), 9 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-08-15 0:29 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-08-15 0:29 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 39 patches, based on b923f1247b72fc100b87792fd2129d026bb10e66. Subsystems affected by this patch series: mm/hotfixes lz4 exec mailmap mm/thp autofs mm/madvise sysctl mm/kmemleak mm/misc lib Subsystem: mm/hotfixes Mike Rapoport <rppt@linux.ibm.com>: asm-generic: pgalloc.h: use correct #ifdef to enable pud_alloc_one() Baoquan He <bhe@redhat.com>: Revert "mm/vmstat.c: do not show lowmem reserve protection information of empty zone" Subsystem: lz4 Nick Terrell <terrelln@fb.com>: lz4: fix kernel decompression speed Subsystem: exec Kees Cook <keescook@chromium.org>: Patch series "Fix S_ISDIR execve() errno": exec: restore EACCES of S_ISDIR execve() selftests/exec: add file type errno tests Subsystem: mailmap Greg Kurz <groug@kaod.org>: mailmap: add entry for Greg Kurz Subsystem: mm/thp "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "THP prep patches": mm: store compound_nr as well as compound_order mm: move page-flags include to top of file mm: add thp_order mm: add thp_size mm: replace hpage_nr_pages with thp_nr_pages mm: add thp_head mm: introduce offset_in_thp Subsystem: autofs Randy Dunlap <rdunlap@infradead.org>: fs: autofs: delete repeated words in comments Subsystem: mm/madvise Minchan Kim <minchan@kernel.org>: Patch series "introduce memory hinting API for external process", v8: mm/madvise: pass task and mm to do_madvise pid: move pidfd_get_pid() to pid.c mm/madvise: introduce process_madvise() syscall: an external memory hinting API mm/madvise: check fatal signal pending of target process Subsystem: sysctl Xiaoming Ni <nixiaoming@huawei.com>: all arch: remove system call sys_sysctl Subsystem: mm/kmemleak Qian Cai <cai@lca.pw>: mm/kmemleak: silence KCSAN splats in checksum Subsystem: mm/misc Qian Cai <cai@lca.pw>: mm/frontswap: mark various intentional data races mm/page_io: mark various intentional data races mm/swap_state: mark various intentional data races Kirill A. Shutemov <kirill@shutemov.name>: mm/filemap.c: fix a data race in filemap_fault() Qian Cai <cai@lca.pw>: mm/swapfile: fix and annotate various data races mm/page_counter: fix various data races at memsw mm/memcontrol: fix a data race in scan count mm/list_lru: fix a data race in list_lru_count_one mm/mempool: fix a data race in mempool_free() mm/rmap: annotate a data race at tlb_flush_batched mm/swap.c: annotate data races for lru_rotate_pvecs mm: annotate a data race in page_zonenum() Romain Naour <romain.naour@gmail.com>: include/asm-generic/vmlinux.lds.h: align ro_after_init Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>: sh: clkfwk: remove r8/r16/r32 sh: use generic strncpy() Subsystem: lib Krzysztof Kozlowski <krzk@kernel.org>: Patch series "iomap: Constify ioreadX() iomem argument", v3: iomap: constify ioreadX() iomem argument (as in generic implementation) rtl818x: constify ioreadX() iomem argument (as in generic implementation) ntb: intel: constify ioreadX() iomem argument (as in generic implementation) virtio: pci: constify ioreadX() iomem argument (as in generic implementation) .mailmap | 1 arch/alpha/include/asm/core_apecs.h | 6 arch/alpha/include/asm/core_cia.h | 6 arch/alpha/include/asm/core_lca.h | 6 arch/alpha/include/asm/core_marvel.h | 4 arch/alpha/include/asm/core_mcpcia.h | 6 arch/alpha/include/asm/core_t2.h | 2 arch/alpha/include/asm/io.h | 12 - arch/alpha/include/asm/io_trivial.h | 16 - arch/alpha/include/asm/jensen.h | 2 arch/alpha/include/asm/machvec.h | 6 arch/alpha/kernel/core_marvel.c | 2 arch/alpha/kernel/io.c | 12 - arch/alpha/kernel/syscalls/syscall.tbl | 3 arch/arm/configs/am200epdkit_defconfig | 1 arch/arm/tools/syscall.tbl | 3 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 6 arch/ia64/kernel/syscalls/syscall.tbl | 3 arch/m68k/kernel/syscalls/syscall.tbl | 3 arch/microblaze/kernel/syscalls/syscall.tbl | 3 arch/mips/configs/cu1000-neo_defconfig | 1 arch/mips/kernel/syscalls/syscall_n32.tbl | 3 arch/mips/kernel/syscalls/syscall_n64.tbl | 3 arch/mips/kernel/syscalls/syscall_o32.tbl | 3 arch/parisc/include/asm/io.h | 4 arch/parisc/kernel/syscalls/syscall.tbl | 3 arch/parisc/lib/iomap.c | 72 +++--- arch/powerpc/kernel/iomap.c | 28 +- arch/powerpc/kernel/syscalls/syscall.tbl | 3 arch/s390/kernel/syscalls/syscall.tbl | 3 arch/sh/configs/dreamcast_defconfig | 1 arch/sh/configs/espt_defconfig | 1 arch/sh/configs/hp6xx_defconfig | 1 arch/sh/configs/landisk_defconfig | 1 arch/sh/configs/lboxre2_defconfig | 1 arch/sh/configs/microdev_defconfig | 1 arch/sh/configs/migor_defconfig | 1 arch/sh/configs/r7780mp_defconfig | 1 arch/sh/configs/r7785rp_defconfig | 1 arch/sh/configs/rts7751r2d1_defconfig | 1 arch/sh/configs/rts7751r2dplus_defconfig | 1 arch/sh/configs/se7206_defconfig | 1 arch/sh/configs/se7343_defconfig | 1 arch/sh/configs/se7619_defconfig | 1 arch/sh/configs/se7705_defconfig | 1 arch/sh/configs/se7750_defconfig | 1 arch/sh/configs/se7751_defconfig | 1 arch/sh/configs/secureedge5410_defconfig | 1 arch/sh/configs/sh03_defconfig | 1 arch/sh/configs/sh7710voipgw_defconfig | 1 arch/sh/configs/sh7757lcr_defconfig | 1 arch/sh/configs/sh7763rdp_defconfig | 1 arch/sh/configs/shmin_defconfig | 1 arch/sh/configs/titan_defconfig | 1 arch/sh/include/asm/string_32.h | 26 -- arch/sh/kernel/iomap.c | 22 - arch/sh/kernel/syscalls/syscall.tbl | 3 arch/sparc/kernel/syscalls/syscall.tbl | 3 arch/x86/entry/syscalls/syscall_32.tbl | 3 arch/x86/entry/syscalls/syscall_64.tbl | 4 arch/xtensa/kernel/syscalls/syscall.tbl | 3 drivers/mailbox/bcm-pdc-mailbox.c | 2 drivers/net/wireless/realtek/rtl818x/rtl8180/rtl8180.h | 6 drivers/ntb/hw/intel/ntb_hw_gen1.c | 2 drivers/ntb/hw/intel/ntb_hw_gen3.h | 2 drivers/ntb/hw/intel/ntb_hw_intel.h | 2 drivers/nvdimm/btt.c | 4 drivers/nvdimm/pmem.c | 6 drivers/sh/clk/cpg.c | 25 -- drivers/virtio/virtio_pci_modern.c | 6 fs/autofs/dev-ioctl.c | 4 fs/io_uring.c | 2 fs/namei.c | 4 include/asm-generic/iomap.h | 28 +- include/asm-generic/pgalloc.h | 2 include/asm-generic/vmlinux.lds.h | 1 include/linux/compat.h | 5 include/linux/huge_mm.h | 58 ++++- include/linux/io-64-nonatomic-hi-lo.h | 4 include/linux/io-64-nonatomic-lo-hi.h | 4 include/linux/memcontrol.h | 2 include/linux/mm.h | 16 - include/linux/mm_inline.h | 6 include/linux/mm_types.h | 1 include/linux/pagemap.h | 6 include/linux/pid.h | 1 include/linux/syscalls.h | 4 include/linux/sysctl.h | 6 include/uapi/asm-generic/unistd.h | 4 kernel/Makefile | 2 kernel/exit.c | 17 - kernel/pid.c | 17 + kernel/sys_ni.c | 3 kernel/sysctl_binary.c | 171 -------------- lib/iomap.c | 30 +- lib/lz4/lz4_compress.c | 4 lib/lz4/lz4_decompress.c | 18 - lib/lz4/lz4defs.h | 10 lib/lz4/lz4hc_compress.c | 2 mm/compaction.c | 2 mm/filemap.c | 22 + mm/frontswap.c | 8 mm/gup.c | 2 mm/internal.h | 4 mm/kmemleak.c | 2 mm/list_lru.c | 2 mm/madvise.c | 190 ++++++++++++++-- mm/memcontrol.c | 10 mm/memory.c | 4 mm/memory_hotplug.c | 7 mm/mempolicy.c | 2 mm/mempool.c | 2 mm/migrate.c | 18 - mm/mlock.c | 9 mm/page_alloc.c | 5 mm/page_counter.c | 13 - mm/page_io.c | 12 - mm/page_vma_mapped.c | 6 mm/rmap.c | 10 mm/swap.c | 21 - mm/swap_state.c | 10 mm/swapfile.c | 33 +- mm/vmscan.c | 6 mm/vmstat.c | 12 - mm/workingset.c | 6 tools/perf/arch/powerpc/entry/syscalls/syscall.tbl | 2 tools/perf/arch/s390/entry/syscalls/syscall.tbl | 2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl | 2 tools/testing/selftests/exec/.gitignore | 1 tools/testing/selftests/exec/Makefile | 5 tools/testing/selftests/exec/non-regular.c | 196 +++++++++++++++++ 132 files changed, 815 insertions(+), 614 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-08-12 1:29 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-08-12 1:29 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - Most of the rest of MM - various other subsystems 165 patches, based on 00e4db51259a5f936fec1424b884f029479d3981. Subsystems affected by this patch series: mm/memcg mm/hugetlb mm/vmscan mm/proc mm/compaction mm/mempolicy mm/oom-kill mm/hugetlbfs mm/migration mm/thp mm/cma mm/util mm/memory-hotplug mm/cleanups mm/uaccess alpha misc sparse bitmap lib lz4 bitops checkpatch autofs minix nilfs ufs fat signals kmod coredump exec kdump rapidio panic kcov kgdb ipc mm/migration mm/gup mm/pagemap Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: Patch series "mm: memcg accounting of percpu memory", v3: percpu: return number of released bytes from pcpu_free_area() mm: memcg/percpu: account percpu memory to memory cgroups mm: memcg/percpu: per-memcg percpu memory statistics mm: memcg: charge memcg percpu memory to the parent cgroup kselftests: cgroup: add perpcu memory accounting test Subsystem: mm/hugetlb Muchun Song <songmuchun@bytedance.com>: mm/hugetlb: add mempolicy check in the reservation routine Subsystem: mm/vmscan Joonsoo Kim <iamjoonsoo.kim@lge.com>: Patch series "workingset protection/detection on the anonymous LRU list", v7: mm/vmscan: make active/inactive ratio as 1:1 for anon lru mm/vmscan: protect the workingset on anonymous LRU mm/workingset: prepare the workingset detection infrastructure for anon LRU mm/swapcache: support to handle the shadow entries mm/swap: implement workingset detection for anonymous LRU mm/vmscan: restore active/inactive ratio for anonymous LRU Subsystem: mm/proc Michal Koutný <mkoutny@suse.com>: /proc/PID/smaps: consistent whitespace output format Subsystem: mm/compaction Nitin Gupta <nigupta@nvidia.com>: mm: proactive compaction mm: fix compile error due to COMPACTION_HPAGE_ORDER mm: use unsigned types for fragmentation score Alex Shi <alex.shi@linux.alibaba.com>: mm/compaction: correct the comments of compact_defer_shift Subsystem: mm/mempolicy Krzysztof Kozlowski <krzk@kernel.org>: mm: mempolicy: fix kerneldoc of numa_map_to_online_node() Wenchao Hao <haowenchao22@gmail.com>: mm/mempolicy.c: check parameters first in kernel_get_mempolicy Yanfei Xu <yanfei.xu@windriver.com>: include/linux/mempolicy.h: fix typo Subsystem: mm/oom-kill Yafang Shao <laoar.shao@gmail.com>: mm, oom: make the calculation of oom badness more accurate Michal Hocko <mhocko@suse.com>: doc, mm: sync up oom_score_adj documentation doc, mm: clarify /proc/<pid>/oom_score value range Yafang Shao <laoar.shao@gmail.com>: mm, oom: show process exiting information in __oom_kill_process() Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: hugetlbfs: prevent filesystem stacking of hugetlbfs hugetlbfs: remove call to huge_pte_alloc without i_mmap_rwsem Subsystem: mm/migration Ralph Campbell <rcampbell@nvidia.com>: Patch series "mm/migrate: optimize migrate_vma_setup() for holes": mm/migrate: optimize migrate_vma_setup() for holes mm/migrate: add migrate-shared test for migrate_vma_*() Subsystem: mm/thp Yang Shi <yang.shi@linux.alibaba.com>: mm: thp: remove debug_cow switch Anshuman Khandual <anshuman.khandual@arm.com>: mm/vmstat: add events for THP migration without split Subsystem: mm/cma Jianqun Xu <jay.xu@rock-chips.com>: mm/cma.c: fix NULL pointer dereference when cma could not be activated Barry Song <song.bao.hua@hisilicon.com>: Patch series "mm: fix the names of general cma and hugetlb cma", v2: mm: cma: fix the name of CMA areas mm: hugetlb: fix the name of hugetlb CMA Mike Kravetz <mike.kravetz@oracle.com>: cma: don't quit at first error when activating reserved areas Subsystem: mm/util Waiman Long <longman@redhat.com>: include/linux/sched/mm.h: optimize current_gfp_context() Krzysztof Kozlowski <krzk@kernel.org>: mm: mmu_notifier: fix and extend kerneldoc Subsystem: mm/memory-hotplug Daniel Jordan <daniel.m.jordan@oracle.com>: x86/mm: use max memory block size on bare metal Jia He <justin.he@arm.com>: mm/memory_hotplug: introduce default dummy memory_add_physaddr_to_nid() mm/memory_hotplug: fix unpaired mem_hotplug_begin/done Charan Teja Reddy <charante@codeaurora.org>: mm, memory_hotplug: update pcp lists everytime onlining a memory block Subsystem: mm/cleanups Randy Dunlap <rdunlap@infradead.org>: mm: drop duplicated words in <linux/pgtable.h> mm: drop duplicated words in <linux/mm.h> include/linux/highmem.h: fix duplicated words in a comment include/linux/frontswap.h: drop duplicated word in a comment include/linux/memcontrol.h: drop duplicate word and fix spello Arvind Sankar <nivedita@alum.mit.edu>: sh/mm: drop unused MAX_PHYSADDR_BITS sparc: drop unused MAX_PHYSADDR_BITS Randy Dunlap <rdunlap@infradead.org>: mm/compaction.c: delete duplicated word mm/filemap.c: delete duplicated word mm/hmm.c: delete duplicated word mm/hugetlb.c: delete duplicated words mm/memcontrol.c: delete duplicated words mm/memory.c: delete duplicated words mm/migrate.c: delete duplicated word mm/nommu.c: delete duplicated words mm/page_alloc.c: delete or fix duplicated words mm/shmem.c: delete duplicated word mm/slab_common.c: delete duplicated word mm/usercopy.c: delete duplicated word mm/vmscan.c: delete or fix duplicated words mm/zpool.c: delete duplicated word and fix grammar mm/zsmalloc.c: fix duplicated words Subsystem: mm/uaccess Christoph Hellwig <hch@lst.de>: Patch series "clean up address limit helpers", v2: syscalls: use uaccess_kernel in addr_limit_user_check nds32: use uaccess_kernel in show_regs riscv: include <asm/pgtable.h> in <asm/uaccess.h> uaccess: remove segment_eq uaccess: add force_uaccess_{begin,end} helpers exec: use force_uaccess_begin during exec and exit Subsystem: alpha Luc Van Oostenryck <luc.vanoostenryck@gmail.com>: alpha: fix annotation of io{read,write}{16,32}be() Subsystem: misc Randy Dunlap <rdunlap@infradead.org>: include/linux/compiler-clang.h: drop duplicated word in a comment include/linux/exportfs.h: drop duplicated word in a comment include/linux/async_tx.h: drop duplicated word in a comment include/linux/xz.h: drop duplicated word Christoph Hellwig <hch@lst.de>: kernel: add a kernel_wait helper Feng Tang <feng.tang@intel.com>: ./Makefile: add debug option to enable function aligned on 32 bytes Arvind Sankar <nivedita@alum.mit.edu>: kernel.h: remove duplicate include of asm/div64.h "Alexander A. Klimov" <grandmaster@al2klimov.de>: include/: replace HTTP links with HTTPS ones Matthew Wilcox <willy@infradead.org>: include/linux/poison.h: remove obsolete comment Subsystem: sparse Luc Van Oostenryck <luc.vanoostenryck@gmail.com>: sparse: group the defines by functionality Subsystem: bitmap Stefano Brivio <sbrivio@redhat.com>: Patch series "lib: Fix bitmap_cut() for overlaps, add test": lib/bitmap.c: fix bitmap_cut() for partial overlapping case lib/test_bitmap.c: add test for bitmap_cut() Subsystem: lib Luc Van Oostenryck <luc.vanoostenryck@gmail.com>: lib/generic-radix-tree.c: remove unneeded __rcu Geert Uytterhoeven <geert@linux-m68k.org>: lib/test_bitops: do the full test during module init Wei Yongjun <weiyongjun1@huawei.com>: lib/test_lockup.c: make symbol 'test_works' static Tiezhu Yang <yangtiezhu@loongson.cn>: lib/Kconfig.debug: make TEST_LOCKUP depend on module lib/test_lockup.c: fix return value of test_lockup_init() "Alexander A. Klimov" <grandmaster@al2klimov.de>: lib/: replace HTTP links with HTTPS ones "Kars Mulder" <kerneldev@karsmulder.nl>: kstrto*: correct documentation references to simple_strto*() kstrto*: do not describe simple_strto*() as obsolete/replaced Subsystem: lz4 Nick Terrell <terrelln@fb.com>: lz4: fix kernel decompression speed Subsystem: bitops Rikard Falkeborn <rikard.falkeborn@gmail.com>: lib/test_bits.c: add tests of GENMASK Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: add test for possible misuse of IS_ENABLED() without CONFIG_ checkpatch: add --fix option for ASSIGN_IN_IF Quentin Monnet <quentin@isovalent.com>: checkpatch: fix CONST_STRUCT when const_structs.checkpatch is missing Joe Perches <joe@perches.com>: checkpatch: add test for repeated words checkpatch: remove missing switch/case break test Subsystem: autofs Randy Dunlap <rdunlap@infradead.org>: autofs: fix doubled word Subsystem: minix Eric Biggers <ebiggers@google.com>: Patch series "fs/minix: fix syzbot bugs and set s_maxbytes": fs/minix: check return value of sb_getblk() fs/minix: don't allow getting deleted inodes fs/minix: reject too-large maximum file size fs/minix: set s_maxbytes correctly fs/minix: fix block limit check for V1 filesystems fs/minix: remove expected error message in block_to_path() Subsystem: nilfs Eric Biggers <ebiggers@google.com>: Patch series "nilfs2 updates": nilfs2: only call unlock_new_inode() if I_NEW Joe Perches <joe@perches.com>: nilfs2: convert __nilfs_msg to integrate the level and format nilfs2: use a more common logging style Subsystem: ufs Colin Ian King <colin.king@canonical.com>: fs/ufs: avoid potential u32 multiplication overflow Subsystem: fat Yubo Feng <fengyubo3@huawei.com>: fatfs: switch write_lock to read_lock in fat_ioctl_get_attributes "Alexander A. Klimov" <grandmaster@al2klimov.de>: VFAT/FAT/MSDOS FILESYSTEM: replace HTTP links with HTTPS ones OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>: fat: fix fat_ra_init() for data clusters == 0 Subsystem: signals Helge Deller <deller@gmx.de>: fs/signalfd.c: fix inconsistent return codes for signalfd4 Subsystem: kmod Tiezhu Yang <yangtiezhu@loongson.cn>: Patch series "kmod/umh: a few fixes": selftests: kmod: use variable NAME in kmod_test_0001() kmod: remove redundant "be an" in the comment test_kmod: avoid potential double free in trigger_config_run_type() Subsystem: coredump Lepton Wu <ytht.net@gmail.com>: coredump: add %f for executable filename Subsystem: exec Kees Cook <keescook@chromium.org>: Patch series "Relocate execve() sanity checks", v2: exec: change uselib(2) IS_SREG() failure to EACCES exec: move S_ISREG() check earlier exec: move path_noexec() check earlier Subsystem: kdump Vijay Balakrishna <vijayb@linux.microsoft.com>: kdump: append kernel build-id string to VMCOREINFO Subsystem: rapidio "Gustavo A. R. Silva" <gustavoars@kernel.org>: drivers/rapidio/devices/rio_mport_cdev.c: use struct_size() helper drivers/rapidio/rio-scan.c: use struct_size() helper rapidio/rio_mport_cdev: use array_size() helper in copy_{from,to}_user() Subsystem: panic Tiezhu Yang <yangtiezhu@loongson.cn>: kernel/panic.c: make oops_may_print() return bool lib/Kconfig.debug: fix typo in the help text of CONFIG_PANIC_TIMEOUT Yue Hu <huyue2@yulong.com>: panic: make print_oops_end_marker() static Subsystem: kcov Marco Elver <elver@google.com>: kcov: unconditionally add -fno-stack-protector to compiler options Wei Yongjun <weiyongjun1@huawei.com>: kcov: make some symbols static Subsystem: kgdb Nick Desaulniers <ndesaulniers@google.com>: scripts/gdb: fix python 3.8 SyntaxWarning Subsystem: ipc Alexey Dobriyan <adobriyan@gmail.com>: ipc: uninline functions Liao Pingfang <liao.pingfang@zte.com.cn>: ipc/shm.c: remove the superfluous break Subsystem: mm/migration Joonsoo Kim <iamjoonsoo.kim@lge.com>: Patch series "clean-up the migration target allocation functions", v5: mm/page_isolation: prefer the node of the source page mm/migrate: move migration helper from .h to .c mm/hugetlb: unify migration callbacks mm/migrate: clear __GFP_RECLAIM to make the migration callback consistent with regular THP allocations mm/migrate: introduce a standard migration target allocation function mm/mempolicy: use a standard migration target allocation callback mm/page_alloc: remove a wrapper for alloc_migration_target() Subsystem: mm/gup Joonsoo Kim <iamjoonsoo.kim@lge.com>: mm/gup: restrict CMA region by using allocation scope API mm/hugetlb: make hugetlb migration callback CMA aware mm/gup: use a standard migration target allocation callback Subsystem: mm/pagemap Peter Xu <peterx@redhat.com>: Patch series "mm: Page fault accounting cleanups", v5: mm: do page fault accounting in handle_mm_fault mm/alpha: use general page fault accounting mm/arc: use general page fault accounting mm/arm: use general page fault accounting mm/arm64: use general page fault accounting mm/csky: use general page fault accounting mm/hexagon: use general page fault accounting mm/ia64: use general page fault accounting mm/m68k: use general page fault accounting mm/microblaze: use general page fault accounting mm/mips: use general page fault accounting mm/nds32: use general page fault accounting mm/nios2: use general page fault accounting mm/openrisc: use general page fault accounting mm/parisc: use general page fault accounting mm/powerpc: use general page fault accounting mm/riscv: use general page fault accounting mm/s390: use general page fault accounting mm/sh: use general page fault accounting mm/sparc32: use general page fault accounting mm/sparc64: use general page fault accounting mm/x86: use general page fault accounting mm/xtensa: use general page fault accounting mm: clean up the last pieces of page fault accountings mm/gup: remove task_struct pointer for all gup code Documentation/admin-guide/cgroup-v2.rst | 4 Documentation/admin-guide/sysctl/kernel.rst | 3 Documentation/admin-guide/sysctl/vm.rst | 15 + Documentation/filesystems/proc.rst | 11 - Documentation/vm/page_migration.rst | 27 +++ Makefile | 4 arch/alpha/include/asm/io.h | 8 arch/alpha/include/asm/uaccess.h | 2 arch/alpha/mm/fault.c | 10 - arch/arc/include/asm/segment.h | 3 arch/arc/kernel/process.c | 2 arch/arc/mm/fault.c | 20 -- arch/arm/include/asm/uaccess.h | 4 arch/arm/kernel/signal.c | 2 arch/arm/mm/fault.c | 27 --- arch/arm64/include/asm/uaccess.h | 2 arch/arm64/kernel/sdei.c | 2 arch/arm64/mm/fault.c | 31 --- arch/arm64/mm/numa.c | 10 - arch/csky/include/asm/segment.h | 2 arch/csky/mm/fault.c | 15 - arch/h8300/include/asm/segment.h | 2 arch/hexagon/mm/vm_fault.c | 11 - arch/ia64/include/asm/uaccess.h | 2 arch/ia64/mm/fault.c | 11 - arch/ia64/mm/numa.c | 2 arch/m68k/include/asm/segment.h | 2 arch/m68k/include/asm/tlbflush.h | 6 arch/m68k/mm/fault.c | 16 - arch/microblaze/include/asm/uaccess.h | 2 arch/microblaze/mm/fault.c | 11 - arch/mips/include/asm/uaccess.h | 2 arch/mips/kernel/unaligned.c | 27 +-- arch/mips/mm/fault.c | 16 - arch/nds32/include/asm/uaccess.h | 2 arch/nds32/kernel/process.c | 2 arch/nds32/mm/alignment.c | 7 arch/nds32/mm/fault.c | 21 -- arch/nios2/include/asm/uaccess.h | 2 arch/nios2/mm/fault.c | 16 - arch/openrisc/include/asm/uaccess.h | 2 arch/openrisc/mm/fault.c | 11 - arch/parisc/include/asm/uaccess.h | 2 arch/parisc/mm/fault.c | 10 - arch/powerpc/include/asm/uaccess.h | 3 arch/powerpc/mm/copro_fault.c | 7 arch/powerpc/mm/fault.c | 13 - arch/riscv/include/asm/uaccess.h | 6 arch/riscv/mm/fault.c | 18 -- arch/s390/include/asm/uaccess.h | 2 arch/s390/kvm/interrupt.c | 2 arch/s390/kvm/kvm-s390.c | 2 arch/s390/kvm/priv.c | 8 arch/s390/mm/fault.c | 18 -- arch/s390/mm/gmap.c | 4 arch/sh/include/asm/segment.h | 3 arch/sh/include/asm/sparsemem.h | 4 arch/sh/kernel/traps_32.c | 12 - arch/sh/mm/fault.c | 13 - arch/sh/mm/init.c | 9 - arch/sparc/include/asm/sparsemem.h | 1 arch/sparc/include/asm/uaccess_32.h | 2 arch/sparc/include/asm/uaccess_64.h | 2 arch/sparc/mm/fault_32.c | 15 - arch/sparc/mm/fault_64.c | 13 - arch/um/kernel/trap.c | 6 arch/x86/include/asm/uaccess.h | 2 arch/x86/mm/fault.c | 19 -- arch/x86/mm/init_64.c | 9 + arch/x86/mm/numa.c | 1 arch/xtensa/include/asm/uaccess.h | 2 arch/xtensa/mm/fault.c | 17 - drivers/firmware/arm_sdei.c | 5 drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 2 drivers/infiniband/core/umem_odp.c | 2 drivers/iommu/amd/iommu_v2.c | 2 drivers/iommu/intel/svm.c | 3 drivers/rapidio/devices/rio_mport_cdev.c | 7 drivers/rapidio/rio-scan.c | 8 drivers/vfio/vfio_iommu_type1.c | 4 fs/coredump.c | 17 + fs/exec.c | 38 ++-- fs/fat/Kconfig | 2 fs/fat/fatent.c | 3 fs/fat/file.c | 4 fs/hugetlbfs/inode.c | 6 fs/minix/inode.c | 48 ++++- fs/minix/itree_common.c | 8 fs/minix/itree_v1.c | 16 - fs/minix/itree_v2.c | 15 - fs/minix/minix.h | 1 fs/namei.c | 10 - fs/nilfs2/alloc.c | 38 ++-- fs/nilfs2/btree.c | 42 ++-- fs/nilfs2/cpfile.c | 10 - fs/nilfs2/dat.c | 14 - fs/nilfs2/direct.c | 14 - fs/nilfs2/gcinode.c | 2 fs/nilfs2/ifile.c | 4 fs/nilfs2/inode.c | 32 +-- fs/nilfs2/ioctl.c | 37 ++-- fs/nilfs2/mdt.c | 2 fs/nilfs2/namei.c | 6 fs/nilfs2/nilfs.h | 18 +- fs/nilfs2/page.c | 11 - fs/nilfs2/recovery.c | 32 +-- fs/nilfs2/segbuf.c | 2 fs/nilfs2/segment.c | 38 ++-- fs/nilfs2/sufile.c | 29 +-- fs/nilfs2/super.c | 73 ++++---- fs/nilfs2/sysfs.c | 29 +-- fs/nilfs2/the_nilfs.c | 85 ++++----- fs/open.c | 6 fs/proc/base.c | 11 + fs/proc/task_mmu.c | 4 fs/signalfd.c | 10 - fs/ufs/super.c | 2 include/asm-generic/uaccess.h | 4 include/clocksource/timer-ti-dm.h | 2 include/linux/async_tx.h | 2 include/linux/btree.h | 2 include/linux/compaction.h | 6 include/linux/compiler-clang.h | 2 include/linux/compiler_types.h | 44 ++--- include/linux/crash_core.h | 6 include/linux/delay.h | 2 include/linux/dma/k3-psil.h | 2 include/linux/dma/k3-udma-glue.h | 2 include/linux/dma/ti-cppi5.h | 2 include/linux/exportfs.h | 2 include/linux/frontswap.h | 2 include/linux/fs.h | 10 + include/linux/generic-radix-tree.h | 2 include/linux/highmem.h | 2 include/linux/huge_mm.h | 7 include/linux/hugetlb.h | 53 ++++-- include/linux/irqchip/irq-omap-intc.h | 2 include/linux/jhash.h | 2 include/linux/kernel.h | 12 - include/linux/leds-ti-lmu-common.h | 2 include/linux/memcontrol.h | 12 + include/linux/mempolicy.h | 18 +- include/linux/migrate.h | 42 +--- include/linux/mm.h | 20 +- include/linux/mmzone.h | 17 + include/linux/oom.h | 4 include/linux/pgtable.h | 12 - include/linux/platform_data/davinci-cpufreq.h | 2 include/linux/platform_data/davinci_asp.h | 2 include/linux/platform_data/elm.h | 2 include/linux/platform_data/gpio-davinci.h | 2 include/linux/platform_data/gpmc-omap.h | 2 include/linux/platform_data/mtd-davinci-aemif.h | 2 include/linux/platform_data/omap-twl4030.h | 2 include/linux/platform_data/uio_pruss.h | 2 include/linux/platform_data/usb-omap.h | 2 include/linux/poison.h | 4 include/linux/sched/mm.h | 8 include/linux/sched/task.h | 1 include/linux/soc/ti/k3-ringacc.h | 2 include/linux/soc/ti/knav_qmss.h | 2 include/linux/soc/ti/ti-msgmgr.h | 2 include/linux/swap.h | 25 ++ include/linux/syscalls.h | 2 include/linux/uaccess.h | 20 ++ include/linux/vm_event_item.h | 3 include/linux/wkup_m3_ipc.h | 2 include/linux/xxhash.h | 2 include/linux/xz.h | 4 include/linux/zlib.h | 2 include/soc/arc/aux.h | 2 include/trace/events/migrate.h | 17 + include/uapi/linux/auto_dev-ioctl.h | 2 include/uapi/linux/elf.h | 2 include/uapi/linux/map_to_7segment.h | 2 include/uapi/linux/types.h | 2 include/uapi/linux/usb/ch9.h | 2 ipc/sem.c | 3 ipc/shm.c | 4 kernel/Makefile | 2 kernel/crash_core.c | 50 +++++ kernel/events/callchain.c | 5 kernel/events/core.c | 5 kernel/events/uprobes.c | 8 kernel/exit.c | 18 +- kernel/futex.c | 2 kernel/kcov.c | 6 kernel/kmod.c | 5 kernel/kthread.c | 5 kernel/panic.c | 4 kernel/stacktrace.c | 5 kernel/sysctl.c | 11 + kernel/umh.c | 29 --- lib/Kconfig.debug | 27 ++- lib/Makefile | 1 lib/bitmap.c | 4 lib/crc64.c | 2 lib/decompress_bunzip2.c | 2 lib/decompress_unlzma.c | 6 lib/kstrtox.c | 20 -- lib/lz4/lz4_compress.c | 4 lib/lz4/lz4_decompress.c | 18 +- lib/lz4/lz4defs.h | 10 + lib/lz4/lz4hc_compress.c | 2 lib/math/rational.c | 2 lib/rbtree.c | 2 lib/test_bitmap.c | 58 ++++++ lib/test_bitops.c | 18 +- lib/test_bits.c | 75 ++++++++ lib/test_kmod.c | 2 lib/test_lockup.c | 6 lib/ts_bm.c | 2 lib/xxhash.c | 2 lib/xz/xz_crc32.c | 2 lib/xz/xz_dec_bcj.c | 2 lib/xz/xz_dec_lzma2.c | 2 lib/xz/xz_lzma2.h | 2 lib/xz/xz_stream.h | 2 mm/cma.c | 40 +--- mm/cma.h | 4 mm/compaction.c | 207 +++++++++++++++++++++-- mm/filemap.c | 2 mm/gup.c | 195 ++++++---------------- mm/hmm.c | 5 mm/huge_memory.c | 23 -- mm/hugetlb.c | 93 ++++------ mm/internal.h | 9 - mm/khugepaged.c | 2 mm/ksm.c | 3 mm/maccess.c | 22 +- mm/memcontrol.c | 42 +++- mm/memory-failure.c | 7 mm/memory.c | 107 +++++++++--- mm/memory_hotplug.c | 30 ++- mm/mempolicy.c | 49 +---- mm/migrate.c | 151 ++++++++++++++--- mm/mmu_notifier.c | 9 - mm/nommu.c | 4 mm/oom_kill.c | 24 +- mm/page_alloc.c | 14 + mm/page_isolation.c | 21 -- mm/percpu-internal.h | 55 ++++++ mm/percpu-km.c | 5 mm/percpu-stats.c | 36 ++-- mm/percpu-vm.c | 5 mm/percpu.c | 208 +++++++++++++++++++++--- mm/process_vm_access.c | 2 mm/rmap.c | 2 mm/shmem.c | 5 mm/slab_common.c | 2 mm/swap.c | 13 - mm/swap_state.c | 80 +++++++-- mm/swapfile.c | 4 mm/usercopy.c | 2 mm/userfaultfd.c | 2 mm/vmscan.c | 36 ++-- mm/vmstat.c | 32 +++ mm/workingset.c | 23 +- mm/zpool.c | 8 mm/zsmalloc.c | 2 scripts/checkpatch.pl | 116 +++++++++---- scripts/gdb/linux/rbtree.py | 4 security/tomoyo/domain.c | 2 tools/testing/selftests/cgroup/test_kmem.c | 70 +++++++- tools/testing/selftests/kmod/kmod.sh | 4 tools/testing/selftests/vm/hmm-tests.c | 35 ++++ virt/kvm/async_pf.c | 2 virt/kvm/kvm_main.c | 2 268 files changed, 2481 insertions(+), 1551 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-08-07 6:16 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-08-07 6:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - A few MM hotfixes - kthread, tools, scripts, ntfs and ocfs2 - Some of MM 163 patches, based on d6efb3ac3e6c19ab722b28bdb9252bae0b9676b6. Subsystems affected by this patch series: mm/pagemap mm/hofixes mm/pagealloc kthread tools scripts ntfs ocfs2 mm/slab-generic mm/slab mm/slub mm/kcsan mm/debug mm/pagecache mm/gup mm/swap mm/shmem mm/memcg mm/pagemap mm/mremap mm/mincore mm/sparsemem mm/vmalloc mm/kasan mm/pagealloc mm/hugetlb mm/vmscan Subsystem: mm/pagemap Yang Shi <yang.shi@linux.alibaba.com>: mm/memory.c: avoid access flag update TLB flush for retried page fault Subsystem: mm/hofixes Ralph Campbell <rcampbell@nvidia.com>: mm/migrate: fix migrate_pgmap_owner w/o CONFIG_MMU_NOTIFIER Subsystem: mm/pagealloc David Hildenbrand <david@redhat.com>: mm/shuffle: don't move pages between zones and don't read garbage memmaps Subsystem: kthread Peter Zijlstra <peterz@infradead.org>: mm: fix kthread_use_mm() vs TLB invalidate Ilias Stamatis <stamatis.iliass@gmail.com>: kthread: remove incorrect comment in kthread_create_on_cpu() Subsystem: tools "Alexander A. Klimov" <grandmaster@al2klimov.de>: tools/: replace HTTP links with HTTPS ones Gaurav Singh <gaurav1086@gmail.com>: tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference Subsystem: scripts Jialu Xu <xujialu@vimux.org>: scripts/tags.sh: collect compiled source precisely Nikolay Borisov <nborisov@suse.com>: scripts/bloat-o-meter: Support comparing library archives Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: scripts/decode_stacktrace.sh: skip missing symbols scripts/decode_stacktrace.sh: guess basepath if not specified scripts/decode_stacktrace.sh: guess path to modules scripts/decode_stacktrace.sh: guess path to vmlinux by release name Joe Perches <joe@perches.com>: const_structs.checkpatch: add regulator_ops Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ntfs Luca Stefani <luca.stefani.ge1@gmail.com>: ntfs: fix ntfs_test_inode and ntfs_init_locked_inode function type Subsystem: ocfs2 Gang He <ghe@suse.com>: ocfs2: fix remounting needed after setfacl command Randy Dunlap <rdunlap@infradead.org>: ocfs2: suballoc.h: delete a duplicated word Junxiao Bi <junxiao.bi@oracle.com>: ocfs2: change slot number type s16 to u16 "Alexander A. Klimov" <grandmaster@al2klimov.de>: ocfs2: replace HTTP links with HTTPS ones Pavel Machek <pavel@ucw.cz>: ocfs2: fix unbalanced locking Subsystem: mm/slab-generic Waiman Long <longman@redhat.com>: mm, treewide: rename kzfree() to kfree_sensitive() William Kucharski <william.kucharski@oracle.com>: mm: ksize() should silently accept a NULL pointer Subsystem: mm/slab Kees Cook <keescook@chromium.org>: Patch series "mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB": mm/slab: expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB mm/slab: add naive detection of double free Long Li <lonuxli.64@gmail.com>: mm, slab: check GFP_SLAB_BUG_MASK before alloc_pages in kmalloc_order Xiao Yang <yangx.jy@cn.fujitsu.com>: mm/slab.c: update outdated kmem_list3 in a comment Subsystem: mm/slub Vlastimil Babka <vbabka@suse.cz>: Patch series "slub_debug fixes and improvements": mm, slub: extend slub_debug syntax for multiple blocks mm, slub: make some slub_debug related attributes read-only mm, slub: remove runtime allocation order changes mm, slub: make remaining slub_debug related attributes read-only mm, slub: make reclaim_account attribute read-only mm, slub: introduce static key for slub_debug() mm, slub: introduce kmem_cache_debug_flags() mm, slub: extend checks guarded by slub_debug static key mm, slab/slub: move and improve cache_from_obj() mm, slab/slub: improve error reporting and overhead of cache_from_obj() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/slub.c: drop lockdep_assert_held() from put_map() Subsystem: mm/kcsan Marco Elver <elver@google.com>: mm, kcsan: instrument SLAB/SLUB free with "ASSERT_EXCLUSIVE_ACCESS" Subsystem: mm/debug Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/debug_vm_pgtable: Add some more tests", v5: mm/debug_vm_pgtable: add tests validating arch helpers for core MM features mm/debug_vm_pgtable: add tests validating advanced arch page table helpers mm/debug_vm_pgtable: add debug prints for individual tests Documentation/mm: add descriptions for arch page table helpers "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Improvements for dump_page()", v2: mm/debug: handle page->mapping better in dump_page mm/debug: dump compound page information on a second line mm/debug: print head flags in dump_page mm/debug: switch dump_page to get_kernel_nofault mm/debug: print the inode number in dump_page mm/debug: print hashed address of struct page John Hubbard <jhubbard@nvidia.com>: mm, dump_page: do not crash with bad compound_mapcount() Subsystem: mm/pagecache Yang Shi <yang.shi@linux.alibaba.com>: mm: filemap: clear idle flag for writes mm: filemap: add missing FGP_ flags in kerneldoc comment for pagecache_get_page Subsystem: mm/gup Tang Yizhou <tangyizhou@huawei.com>: mm/gup.c: fix the comment of return value for populate_vma_page_range() Subsystem: mm/swap Zhen Lei <thunder.leizhen@huawei.com>: Patch series "clean up some functions in mm/swap_slots.c": mm/swap_slots.c: simplify alloc_swap_slot_cache() mm/swap_slots.c: simplify enable_swap_slots_cache() mm/swap_slots.c: remove redundant check for swap_slot_cache_initialized Krzysztof Kozlowski <krzk@kernel.org>: mm: swap: fix kerneldoc of swap_vma_readahead() Xianting Tian <xianting_tian@126.com>: mm/page_io.c: use blk_io_schedule() for avoiding task hung in sync io Subsystem: mm/shmem Chris Down <chris@chrisdown.name>: Patch series "tmpfs: inode: Reduce risk of inum overflow", v7: tmpfs: per-superblock i_ino support tmpfs: support 64-bit inums per-sb Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: kmem: make memcg_kmem_enabled() irreversible Patch series "The new cgroup slab memory controller", v7: mm: memcg: factor out memcg- and lruvec-level changes out of __mod_lruvec_state() mm: memcg: prepare for byte-sized vmstat items mm: memcg: convert vmstat slab counters to bytes mm: slub: implement SLUB version of obj_to_index() Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: decouple reference counting from page accounting Roman Gushchin <guro@fb.com>: mm: memcg/slab: obj_cgroup API mm: memcg/slab: allocate obj_cgroups for non-root slab pages mm: memcg/slab: save obj_cgroup for non-root slab objects mm: memcg/slab: charge individual slab objects instead of pages mm: memcg/slab: deprecate memory.kmem.slabinfo mm: memcg/slab: move memcg_kmem_bypass() to memcontrol.h mm: memcg/slab: use a single set of kmem_caches for all accounted allocations mm: memcg/slab: simplify memcg cache creation mm: memcg/slab: remove memcg_kmem_get_cache() mm: memcg/slab: deprecate slab_root_caches mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo() mm: memcg/slab: use a single set of kmem_caches for all allocations kselftests: cgroup: add kernel memory accounting tests tools/cgroup: add memcg_slabinfo.py tool Shakeel Butt <shakeelb@google.com>: mm: memcontrol: account kernel stack per node Roman Gushchin <guro@fb.com>: mm: memcg/slab: remove unused argument by charge_slab_page() mm: slab: rename (un)charge_slab_page() to (un)account_slab_page() mm: kmem: switch to static_branch_likely() in memcg_kmem_enabled() mm: memcontrol: avoid workload stalls when lowering memory.high Chris Down <chris@chrisdown.name>: Patch series "mm, memcg: reclaim harder before high throttling", v2: mm, memcg: reclaim more aggressively before high allocator throttling mm, memcg: unify reclaim retry limits with page allocator Yafang Shao <laoar.shao@gmail.com>: Patch series "mm, memcg: memory.{low,min} reclaim fix & cleanup", v4: mm, memcg: avoid stale protection values when cgroup is above protection Chris Down <chris@chrisdown.name>: mm, memcg: decouple e{low,min} state mutations from protection checks Yafang Shao <laoar.shao@gmail.com>: memcg, oom: check memcg margin for parallel oom Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: restore proper dirty throttling when memory.high changes mm: memcontrol: don't count limit-setting reclaim as memory pressure Michal Koutný <mkoutny@suse.com>: mm/page_counter.c: fix protection usage propagation Subsystem: mm/pagemap Ralph Campbell <rcampbell@nvidia.com>: mm: remove redundant check non_swap_entry() Alex Zhang <zhangalex@google.com>: mm/memory.c: make remap_pfn_range() reject unaligned addr Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: cleanup usage of <asm/pgalloc.h>": mm: remove unneeded includes of <asm/pgalloc.h> opeinrisc: switch to generic version of pte allocation xtensa: switch to generic version of pte allocation asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one() asm-generic: pgalloc: provide generic pud_alloc_one() and pud_free_one() asm-generic: pgalloc: provide generic pgd_free() mm: move lib/ioremap.c to mm/ Joerg Roedel <jroedel@suse.de>: mm: move p?d_alloc_track to separate header file Zhen Lei <thunder.leizhen@huawei.com>: mm/mmap: optimize a branch judgment in ksys_mmap_pgoff() Feng Tang <feng.tang@intel.com>: Patch series "make vm_committed_as_batch aware of vm overcommit policy", v6: proc/meminfo: avoid open coded reading of vm_committed_as mm/util.c: make vm_memory_committed() more accurate percpu_counter: add percpu_counter_sync() mm: adjust vm_committed_as_batch according to vm overcommit policy Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "arm64: Enable vmemmap mapping from device memory", v4: mm/sparsemem: enable vmem_altmap support in vmemmap_populate_basepages() mm/sparsemem: enable vmem_altmap support in vmemmap_alloc_block_buf() arm64/mm: enable vmem_altmap support for vmemmap mappings Miaohe Lin <linmiaohe@huawei.com>: mm: mmap: merge vma after call_mmap() if possible Peter Collingbourne <pcc@google.com>: mm: remove unnecessary wrapper function do_mmap_pgoff() Subsystem: mm/mremap Wei Yang <richard.weiyang@linux.alibaba.com>: Patch series "mm/mremap: cleanup move_page_tables() a little", v5: mm/mremap: it is sure to have enough space when extent meets requirement mm/mremap: calculate extent in one place mm/mremap: start addresses are properly aligned Subsystem: mm/mincore Ricardo Cañuelo <ricardo.canuelo@collabora.com>: selftests: add mincore() tests Subsystem: mm/sparsemem Wei Yang <richard.weiyang@linux.alibaba.com>: mm/sparse: never partially remove memmap for early section mm/sparse: only sub-section aligned range would be populated Mike Rapoport <rppt@linux.ibm.com>: mm/sparse: cleanup the code surrounding memory_present() Subsystem: mm/vmalloc "Matthew Wilcox (Oracle)" <willy@infradead.org>: vmalloc: convert to XArray "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: simplify merge_or_add_vmap_area() mm/vmalloc: simplify augment_tree_propagate_check() mm/vmalloc: switch to "propagate()" callback mm/vmalloc: update the header about KVA rework Mike Rapoport <rppt@linux.ibm.com>: mm: vmalloc: remove redundant assignment in unmap_kernel_range_noflush() "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc.c: remove BUG() from the find_va_links() Subsystem: mm/kasan Marco Elver <elver@google.com>: kasan: improve and simplify Kconfig.kasan kasan: update required compiler versions in documentation Walter Wu <walter-zh.wu@mediatek.com>: Patch series "kasan: memorize and print call_rcu stack", v8: rcu: kasan: record and print call_rcu() call stack kasan: record and print the free track kasan: add tests for call_rcu stack recording kasan: update documentation for generic kasan Vincenzo Frascino <vincenzo.frascino@arm.com>: kasan: remove kasan_unpoison_stack_above_sp_to() Walter Wu <walter-zh.wu@mediatek.com>: lib/test_kasan.c: fix KASAN unit tests for tag-based KASAN Andrey Konovalov <andreyknvl@google.com>: Patch series "kasan: support stack instrumentation for tag-based mode", v2: kasan: don't tag stacks allocated with pagealloc efi: provide empty efi_enter_virtual_mode implementation kasan, arm64: don't instrument functions that enable kasan kasan: allow enabling stack tagging for tag-based mode kasan: adjust kasan_stack_oob for tag-based mode Subsystem: mm/pagealloc Vlastimil Babka <vbabka@suse.cz>: mm, page_alloc: use unlikely() in task_capc() Jaewon Kim <jaewon31.kim@samsung.com>: page_alloc: consider highatomic reserve in watermark fast Charan Teja Reddy <charante@codeaurora.org>: mm, page_alloc: skip ->waternark_boost for atomic order-0 allocations David Hildenbrand <david@redhat.com>: mm: remove vm_total_pages mm/page_alloc: remove nr_free_pagecache_pages() mm/memory_hotplug: document why shuffle_zone() is relevant mm/shuffle: remove dynamic reconfiguration Wei Yang <richard.weiyang@linux.alibaba.com>: mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits mm/page_alloc.c: extract the common part in pfn_to_bitidx() mm/page_alloc.c: simplify pageblock bitmap access mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask() Qian Cai <cai@lca.pw>: mm/page_alloc: silence a KASAN false positive Wei Yang <richard.weiyang@linux.alibaba.com>: mm/page_alloc: fallbacks at most has 3 elements Muchun Song <songmuchun@bytedance.com>: mm/page_alloc.c: skip setting nodemask when we are in interrupt Joonsoo Kim <iamjoonsoo.kim@lge.com>: mm/page_alloc: fix memalloc_nocma_{save/restore} APIs Subsystem: mm/hugetlb "Alexander A. Klimov" <grandmaster@al2klimov.de>: mm: thp: replace HTTP links with HTTPS ones Peter Xu <peterx@redhat.com>: mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible Hugh Dickins <hughd@google.com>: khugepaged: collapse_pte_mapped_thp() flush the right range khugepaged: collapse_pte_mapped_thp() protect the pmd lock khugepaged: retract_page_tables() remember to test exit khugepaged: khugepaged_test_exit() check mmget_still_valid() Subsystem: mm/vmscan dylan-meiners <spacct.spacct@gmail.com>: mm/vmscan.c: fix typo Shakeel Butt <shakeelb@google.com>: mm: vmscan: consistent update to pgrefill Documentation/admin-guide/kernel-parameters.txt | 2 Documentation/dev-tools/kasan.rst | 10 Documentation/filesystems/dlmfs.rst | 2 Documentation/filesystems/ocfs2.rst | 2 Documentation/filesystems/tmpfs.rst | 18 Documentation/vm/arch_pgtable_helpers.rst | 258 +++++ Documentation/vm/memory-model.rst | 9 Documentation/vm/slub.rst | 51 - arch/alpha/include/asm/pgalloc.h | 21 arch/alpha/include/asm/tlbflush.h | 1 arch/alpha/kernel/core_irongate.c | 1 arch/alpha/kernel/core_marvel.c | 1 arch/alpha/kernel/core_titan.c | 1 arch/alpha/kernel/machvec_impl.h | 2 arch/alpha/kernel/smp.c | 1 arch/alpha/mm/numa.c | 1 arch/arc/mm/fault.c | 1 arch/arc/mm/init.c | 1 arch/arm/include/asm/pgalloc.h | 12 arch/arm/include/asm/tlb.h | 1 arch/arm/kernel/machine_kexec.c | 1 arch/arm/kernel/smp.c | 1 arch/arm/kernel/suspend.c | 1 arch/arm/mach-omap2/omap-mpuss-lowpower.c | 1 arch/arm/mm/hugetlbpage.c | 1 arch/arm/mm/init.c | 9 arch/arm/mm/mmu.c | 1 arch/arm64/include/asm/pgalloc.h | 39 arch/arm64/kernel/setup.c | 2 arch/arm64/kernel/smp.c | 1 arch/arm64/mm/hugetlbpage.c | 1 arch/arm64/mm/init.c | 6 arch/arm64/mm/ioremap.c | 1 arch/arm64/mm/mmu.c | 63 - arch/csky/include/asm/pgalloc.h | 7 arch/csky/kernel/smp.c | 1 arch/hexagon/include/asm/pgalloc.h | 7 arch/ia64/include/asm/pgalloc.h | 24 arch/ia64/include/asm/tlb.h | 1 arch/ia64/kernel/process.c | 1 arch/ia64/kernel/smp.c | 1 arch/ia64/kernel/smpboot.c | 1 arch/ia64/mm/contig.c | 1 arch/ia64/mm/discontig.c | 4 arch/ia64/mm/hugetlbpage.c | 1 arch/ia64/mm/tlb.c | 1 arch/m68k/include/asm/mmu_context.h | 2 arch/m68k/include/asm/sun3_pgalloc.h | 7 arch/m68k/kernel/dma.c | 2 arch/m68k/kernel/traps.c | 3 arch/m68k/mm/cache.c | 2 arch/m68k/mm/fault.c | 1 arch/m68k/mm/kmap.c | 2 arch/m68k/mm/mcfmmu.c | 1 arch/m68k/mm/memory.c | 1 arch/m68k/sun3x/dvma.c | 2 arch/microblaze/include/asm/pgalloc.h | 6 arch/microblaze/include/asm/tlbflush.h | 1 arch/microblaze/kernel/process.c | 1 arch/microblaze/kernel/signal.c | 1 arch/microblaze/mm/init.c | 3 arch/mips/include/asm/pgalloc.h | 19 arch/mips/kernel/setup.c | 8 arch/mips/loongson64/numa.c | 1 arch/mips/sgi-ip27/ip27-memory.c | 2 arch/mips/sgi-ip32/ip32-memory.c | 1 arch/nds32/mm/mm-nds32.c | 2 arch/nios2/include/asm/pgalloc.h | 7 arch/openrisc/include/asm/pgalloc.h | 33 arch/openrisc/include/asm/tlbflush.h | 1 arch/openrisc/kernel/or32_ksyms.c | 1 arch/parisc/include/asm/mmu_context.h | 1 arch/parisc/include/asm/pgalloc.h | 12 arch/parisc/kernel/cache.c | 1 arch/parisc/kernel/pci-dma.c | 1 arch/parisc/kernel/process.c | 1 arch/parisc/kernel/signal.c | 1 arch/parisc/kernel/smp.c | 1 arch/parisc/mm/hugetlbpage.c | 1 arch/parisc/mm/init.c | 5 arch/parisc/mm/ioremap.c | 2 arch/powerpc/include/asm/tlb.h | 1 arch/powerpc/mm/book3s64/hash_hugetlbpage.c | 1 arch/powerpc/mm/book3s64/hash_pgtable.c | 1 arch/powerpc/mm/book3s64/hash_tlb.c | 1 arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 1 arch/powerpc/mm/init_32.c | 1 arch/powerpc/mm/init_64.c | 4 arch/powerpc/mm/kasan/8xx.c | 1 arch/powerpc/mm/kasan/book3s_32.c | 1 arch/powerpc/mm/mem.c | 3 arch/powerpc/mm/nohash/40x.c | 1 arch/powerpc/mm/nohash/8xx.c | 1 arch/powerpc/mm/nohash/fsl_booke.c | 1 arch/powerpc/mm/nohash/kaslr_booke.c | 1 arch/powerpc/mm/nohash/tlb.c | 1 arch/powerpc/mm/numa.c | 1 arch/powerpc/mm/pgtable.c | 1 arch/powerpc/mm/pgtable_64.c | 1 arch/powerpc/mm/ptdump/hashpagetable.c | 2 arch/powerpc/mm/ptdump/ptdump.c | 1 arch/powerpc/platforms/pseries/cmm.c | 1 arch/riscv/include/asm/pgalloc.h | 18 arch/riscv/mm/fault.c | 1 arch/riscv/mm/init.c | 3 arch/s390/crypto/prng.c | 4 arch/s390/include/asm/tlb.h | 1 arch/s390/include/asm/tlbflush.h | 1 arch/s390/kernel/machine_kexec.c | 1 arch/s390/kernel/ptrace.c | 1 arch/s390/kvm/diag.c | 1 arch/s390/kvm/priv.c | 1 arch/s390/kvm/pv.c | 1 arch/s390/mm/cmm.c | 1 arch/s390/mm/init.c | 1 arch/s390/mm/mmap.c | 1 arch/s390/mm/pgtable.c | 1 arch/sh/include/asm/pgalloc.h | 4 arch/sh/kernel/idle.c | 1 arch/sh/kernel/machine_kexec.c | 1 arch/sh/mm/cache-sh3.c | 1 arch/sh/mm/cache-sh7705.c | 1 arch/sh/mm/hugetlbpage.c | 1 arch/sh/mm/init.c | 7 arch/sh/mm/ioremap_fixed.c | 1 arch/sh/mm/numa.c | 3 arch/sh/mm/tlb-sh3.c | 1 arch/sparc/include/asm/ide.h | 1 arch/sparc/include/asm/tlb_64.h | 1 arch/sparc/kernel/leon_smp.c | 1 arch/sparc/kernel/process_32.c | 1 arch/sparc/kernel/signal_32.c | 1 arch/sparc/kernel/smp_32.c | 1 arch/sparc/kernel/smp_64.c | 1 arch/sparc/kernel/sun4m_irq.c | 1 arch/sparc/mm/highmem.c | 1 arch/sparc/mm/init_64.c | 1 arch/sparc/mm/io-unit.c | 1 arch/sparc/mm/iommu.c | 1 arch/sparc/mm/tlb.c | 1 arch/um/include/asm/pgalloc.h | 9 arch/um/include/asm/pgtable-3level.h | 3 arch/um/kernel/mem.c | 17 arch/x86/ia32/ia32_aout.c | 1 arch/x86/include/asm/mmu_context.h | 1 arch/x86/include/asm/pgalloc.h | 42 arch/x86/kernel/alternative.c | 1 arch/x86/kernel/apic/apic.c | 1 arch/x86/kernel/mpparse.c | 1 arch/x86/kernel/traps.c | 1 arch/x86/mm/fault.c | 1 arch/x86/mm/hugetlbpage.c | 1 arch/x86/mm/init_32.c | 2 arch/x86/mm/init_64.c | 12 arch/x86/mm/kaslr.c | 1 arch/x86/mm/pgtable_32.c | 1 arch/x86/mm/pti.c | 1 arch/x86/platform/uv/bios_uv.c | 1 arch/x86/power/hibernate.c | 2 arch/xtensa/include/asm/pgalloc.h | 46 arch/xtensa/kernel/xtensa_ksyms.c | 1 arch/xtensa/mm/cache.c | 1 arch/xtensa/mm/fault.c | 1 crypto/adiantum.c | 2 crypto/ahash.c | 4 crypto/api.c | 2 crypto/asymmetric_keys/verify_pefile.c | 4 crypto/deflate.c | 2 crypto/drbg.c | 10 crypto/ecc.c | 8 crypto/ecdh.c | 2 crypto/gcm.c | 2 crypto/gf128mul.c | 4 crypto/jitterentropy-kcapi.c | 2 crypto/rng.c | 2 crypto/rsa-pkcs1pad.c | 6 crypto/seqiv.c | 2 crypto/shash.c | 2 crypto/skcipher.c | 2 crypto/testmgr.c | 6 crypto/zstd.c | 2 drivers/base/node.c | 10 drivers/block/xen-blkback/common.h | 1 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c | 2 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 2 drivers/crypto/amlogic/amlogic-gxl-cipher.c | 4 drivers/crypto/atmel-ecc.c | 2 drivers/crypto/caam/caampkc.c | 28 drivers/crypto/cavium/cpt/cptvf_main.c | 6 drivers/crypto/cavium/cpt/cptvf_reqmanager.c | 12 drivers/crypto/cavium/nitrox/nitrox_lib.c | 4 drivers/crypto/cavium/zip/zip_crypto.c | 6 drivers/crypto/ccp/ccp-crypto-rsa.c | 6 drivers/crypto/ccree/cc_aead.c | 4 drivers/crypto/ccree/cc_buffer_mgr.c | 4 drivers/crypto/ccree/cc_cipher.c | 6 drivers/crypto/ccree/cc_hash.c | 8 drivers/crypto/ccree/cc_request_mgr.c | 2 drivers/crypto/marvell/cesa/hash.c | 2 drivers/crypto/marvell/octeontx/otx_cptvf_main.c | 6 drivers/crypto/marvell/octeontx/otx_cptvf_reqmgr.h | 2 drivers/crypto/nx/nx.c | 4 drivers/crypto/virtio/virtio_crypto_algs.c | 12 drivers/crypto/virtio/virtio_crypto_core.c | 2 drivers/iommu/ipmmu-vmsa.c | 1 drivers/md/dm-crypt.c | 32 drivers/md/dm-integrity.c | 6 drivers/misc/ibmvmc.c | 6 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 2 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 6 drivers/net/ppp/ppp_mppe.c | 6 drivers/net/wireguard/noise.c | 4 drivers/net/wireguard/peer.c | 2 drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 2 drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 6 drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 6 drivers/net/wireless/intersil/orinoco/wext.c | 4 drivers/s390/crypto/ap_bus.h | 4 drivers/staging/ks7010/ks_hostif.c | 2 drivers/staging/rtl8723bs/core/rtw_security.c | 2 drivers/staging/wlan-ng/p80211netdev.c | 2 drivers/target/iscsi/iscsi_target_auth.c | 2 drivers/xen/balloon.c | 1 drivers/xen/privcmd.c | 1 fs/Kconfig | 21 fs/aio.c | 6 fs/binfmt_elf_fdpic.c | 1 fs/cifs/cifsencrypt.c | 2 fs/cifs/connect.c | 10 fs/cifs/dfs_cache.c | 2 fs/cifs/misc.c | 8 fs/crypto/inline_crypt.c | 5 fs/crypto/keyring.c | 6 fs/crypto/keysetup_v1.c | 4 fs/ecryptfs/keystore.c | 4 fs/ecryptfs/messaging.c | 2 fs/hugetlbfs/inode.c | 2 fs/ntfs/dir.c | 2 fs/ntfs/inode.c | 27 fs/ntfs/inode.h | 4 fs/ntfs/mft.c | 4 fs/ocfs2/Kconfig | 6 fs/ocfs2/acl.c | 2 fs/ocfs2/blockcheck.c | 2 fs/ocfs2/dlmglue.c | 8 fs/ocfs2/ocfs2.h | 4 fs/ocfs2/suballoc.c | 4 fs/ocfs2/suballoc.h | 2 fs/ocfs2/super.c | 4 fs/proc/meminfo.c | 10 include/asm-generic/pgalloc.h | 80 + include/asm-generic/tlb.h | 1 include/crypto/aead.h | 2 include/crypto/akcipher.h | 2 include/crypto/gf128mul.h | 2 include/crypto/hash.h | 2 include/crypto/internal/acompress.h | 2 include/crypto/kpp.h | 2 include/crypto/skcipher.h | 2 include/linux/efi.h | 4 include/linux/fs.h | 17 include/linux/huge_mm.h | 2 include/linux/kasan.h | 4 include/linux/memcontrol.h | 209 +++- include/linux/mm.h | 86 - include/linux/mm_types.h | 5 include/linux/mman.h | 4 include/linux/mmu_notifier.h | 13 include/linux/mmzone.h | 54 - include/linux/pageblock-flags.h | 30 include/linux/percpu_counter.h | 4 include/linux/sched/mm.h | 8 include/linux/shmem_fs.h | 3 include/linux/slab.h | 11 include/linux/slab_def.h | 9 include/linux/slub_def.h | 31 include/linux/swap.h | 2 include/linux/vmstat.h | 14 init/Kconfig | 9 init/main.c | 2 ipc/shm.c | 2 kernel/fork.c | 54 - kernel/kthread.c | 8 kernel/power/snapshot.c | 2 kernel/rcu/tree.c | 2 kernel/scs.c | 2 kernel/sysctl.c | 2 lib/Kconfig.kasan | 39 lib/Makefile | 1 lib/ioremap.c | 287 ----- lib/mpi/mpiutil.c | 6 lib/percpu_counter.c | 19 lib/test_kasan.c | 87 + mm/Kconfig | 6 mm/Makefile | 2 mm/debug.c | 103 +- mm/debug_vm_pgtable.c | 666 +++++++++++++ mm/filemap.c | 9 mm/gup.c | 3 mm/huge_memory.c | 14 mm/hugetlb.c | 25 mm/ioremap.c | 289 +++++ mm/kasan/common.c | 41 mm/kasan/generic.c | 43 mm/kasan/generic_report.c | 1 mm/kasan/kasan.h | 25 mm/kasan/quarantine.c | 1 mm/kasan/report.c | 54 - mm/kasan/tags.c | 37 mm/khugepaged.c | 75 - mm/memcontrol.c | 832 ++++++++++------- mm/memory.c | 15 mm/memory_hotplug.c | 11 mm/migrate.c | 6 mm/mm_init.c | 20 mm/mmap.c | 45 mm/mremap.c | 19 mm/nommu.c | 6 mm/oom_kill.c | 2 mm/page-writeback.c | 6 mm/page_alloc.c | 226 ++-- mm/page_counter.c | 6 mm/page_io.c | 2 mm/pgalloc-track.h | 51 + mm/shmem.c | 133 ++ mm/shuffle.c | 46 mm/shuffle.h | 17 mm/slab.c | 129 +- mm/slab.h | 755 ++++++--------- mm/slab_common.c | 829 ++-------------- mm/slob.c | 12 mm/slub.c | 680 ++++--------- mm/sparse-vmemmap.c | 62 - mm/sparse.c | 31 mm/swap_slots.c | 45 mm/swap_state.c | 2 mm/util.c | 52 + mm/vmalloc.c | 176 +-- mm/vmscan.c | 39 mm/vmstat.c | 38 mm/workingset.c | 6 net/atm/mpoa_caches.c | 4 net/bluetooth/ecdh_helper.c | 6 net/bluetooth/smp.c | 24 net/core/sock.c | 2 net/ipv4/tcp_fastopen.c | 2 net/mac80211/aead_api.c | 4 net/mac80211/aes_gmac.c | 2 net/mac80211/key.c | 2 net/mac802154/llsec.c | 20 net/sctp/auth.c | 2 net/sunrpc/auth_gss/gss_krb5_crypto.c | 4 net/sunrpc/auth_gss/gss_krb5_keys.c | 6 net/sunrpc/auth_gss/gss_krb5_mech.c | 2 net/tipc/crypto.c | 10 net/wireless/core.c | 2 net/wireless/ibss.c | 4 net/wireless/lib80211_crypt_tkip.c | 2 net/wireless/lib80211_crypt_wep.c | 2 net/wireless/nl80211.c | 24 net/wireless/sme.c | 6 net/wireless/util.c | 2 net/wireless/wext-sme.c | 2 scripts/Makefile.kasan | 3 scripts/bloat-o-meter | 2 scripts/coccinelle/free/devm_free.cocci | 4 scripts/coccinelle/free/ifnullfree.cocci | 4 scripts/coccinelle/free/kfree.cocci | 6 scripts/coccinelle/free/kfreeaddr.cocci | 2 scripts/const_structs.checkpatch | 1 scripts/decode_stacktrace.sh | 85 + scripts/spelling.txt | 19 scripts/tags.sh | 18 security/apparmor/domain.c | 4 security/apparmor/include/file.h | 2 security/apparmor/policy.c | 24 security/apparmor/policy_ns.c | 6 security/apparmor/policy_unpack.c | 14 security/keys/big_key.c | 6 security/keys/dh.c | 14 security/keys/encrypted-keys/encrypted.c | 14 security/keys/trusted-keys/trusted_tpm1.c | 34 security/keys/user_defined.c | 6 tools/cgroup/memcg_slabinfo.py | 226 ++++ tools/include/linux/jhash.h | 2 tools/lib/rbtree.c | 2 tools/lib/traceevent/event-parse.h | 2 tools/testing/ktest/examples/README | 2 tools/testing/ktest/examples/crosstests.conf | 2 tools/testing/selftests/Makefile | 1 tools/testing/selftests/cgroup/.gitignore | 1 tools/testing/selftests/cgroup/Makefile | 2 tools/testing/selftests/cgroup/cgroup_util.c | 2 tools/testing/selftests/cgroup/test_kmem.c | 382 +++++++ tools/testing/selftests/mincore/.gitignore | 2 tools/testing/selftests/mincore/Makefile | 6 tools/testing/selftests/mincore/mincore_selftest.c | 361 +++++++ 397 files changed, 5547 insertions(+), 4072 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-07-24 4:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-07-24 4:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 15 patches, based on f37e99aca03f63aa3f2bd13ceaf769455d12c4b0. Subsystems affected by this patch series: mm/pagemap mm/shmem mm/hotfixes mm/memcg mm/hugetlb mailmap squashfs scripts io-mapping MAINTAINERS gdb Subsystem: mm/pagemap Yang Shi <yang.shi@linux.alibaba.com>: mm/memory.c: avoid access flag update TLB flush for retried page fault "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: mm/mmap.c: close race between munmap() and expand_upwards()/downwards() Subsystem: mm/shmem Chengguang Xu <cgxu519@mykernel.net>: vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way Subsystem: mm/hotfixes Tom Rix <trix@redhat.com>: mm: initialize return of vm_insert_pages Bhupesh Sharma <bhsharma@redhat.com>: mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages() Subsystem: mm/memcg Hugh Dickins <hughd@google.com>: mm/memcg: fix refcount error while moving and swapping Muchun Song <songmuchun@bytedance.com>: mm: memcg/slab: fix memory leak at non-root kmem_cache destroy Subsystem: mm/hugetlb Barry Song <song.bao.hua@hisilicon.com>: mm/hugetlb: avoid hardcoding while checking if cma is enabled "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: khugepaged: fix null-pointer dereference due to race Subsystem: mailmap Mike Rapoport <rppt@linux.ibm.com>: mailmap: add entry for Mike Rapoport Subsystem: squashfs Phillip Lougher <phillip@squashfs.org.uk>: squashfs: fix length field overlap check in metadata reading Subsystem: scripts Pi-Hsun Shih <pihsun@chromium.org>: scripts/decode_stacktrace: strip basepath from all paths Subsystem: io-mapping "Michael J. Ruhl" <michael.j.ruhl@intel.com>: io-mapping: indicate mapping failure Subsystem: MAINTAINERS Andrey Konovalov <andreyknvl@google.com>: MAINTAINERS: add KCOV section Subsystem: gdb Stefano Garzarella <sgarzare@redhat.com>: scripts/gdb: fix lx-symbols 'gdb.error' while loading modules .mailmap | 3 +++ MAINTAINERS | 11 +++++++++++ fs/squashfs/block.c | 2 +- include/linux/io-mapping.h | 5 ++++- include/linux/xattr.h | 3 ++- mm/hugetlb.c | 15 ++++++++++----- mm/khugepaged.c | 3 +++ mm/memcontrol.c | 13 ++++++++++--- mm/memory.c | 9 +++++++-- mm/mmap.c | 16 ++++++++++++++-- mm/shmem.c | 2 +- mm/slab_common.c | 35 ++++++++++++++++++++++++++++------- scripts/decode_stacktrace.sh | 4 ++-- scripts/gdb/linux/symbols.py | 2 +- 14 files changed, 97 insertions(+), 26 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-07-03 22:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-07-03 22:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 5 patches, based on cdd3bb54332f82295ed90cd0c09c78cd0c0ee822. Subsystems affected by this patch series: mm/hugetlb samples mm/cma mm/vmalloc mm/pagealloc Subsystem: mm/hugetlb Mike Kravetz <mike.kravetz@oracle.com>: mm/hugetlb.c: fix pages per hugetlb calculation Subsystem: samples Kees Cook <keescook@chromium.org>: samples/vfs: avoid warning in statx override Subsystem: mm/cma Barry Song <song.bao.hua@hisilicon.com>: mm/cma.c: use exact_nid true to fix possible per-numa cma leak Subsystem: mm/vmalloc Christoph Hellwig <hch@lst.de>: vmalloc: fix the owner argument for the new __vmalloc_node_range callers Subsystem: mm/pagealloc Joel Savitz <jsavitz@redhat.com>: mm/page_alloc: fix documentation error arch/arm64/kernel/probes/kprobes.c | 2 +- arch/x86/hyperv/hv_init.c | 3 ++- kernel/module.c | 2 +- mm/cma.c | 4 ++-- mm/hugetlb.c | 2 +- mm/page_alloc.c | 2 +- samples/vfs/test-statx.c | 2 ++ 7 files changed, 10 insertions(+), 7 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-26 3:28 Andrew Morton 2020-06-26 6:51 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-06-26 3:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 32 patches, based on 908f7d12d3ba51dfe0449b9723199b423f97ca9a. Subsystems affected by this patch series: hotfixes mm/pagealloc kexec ocfs2 lib misc mm/slab mm/slab mm/slub mm/swap mm/pagemap mm/vmalloc mm/memcg mm/gup mm/thp mm/vmscan x86 mm/memory-hotplug MAINTAINERS Subsystem: hotfixes Stafford Horne <shorne@gmail.com>: openrisc: fix boot oops when DEBUG_VM is enabled Michal Hocko <mhocko@suse.com>: mm: do_swap_page(): fix up the error code Subsystem: mm/pagealloc Vlastimil Babka <vbabka@suse.cz>: mm, compaction: make capture control handling safe wrt interrupts Subsystem: kexec Lianbo Jiang <lijiang@redhat.com>: kexec: do not verify the signature without the lockdown or mandatory signature Subsystem: ocfs2 Junxiao Bi <junxiao.bi@oracle.com>: Patch series "ocfs2: fix nfsd over ocfs2 issues", v2: ocfs2: avoid inode removal while nfsd is accessing it ocfs2: load global_inode_alloc ocfs2: fix panic on nfs server over ocfs2 ocfs2: fix value of OCFS2_INVALID_SLOT Subsystem: lib Randy Dunlap <rdunlap@infradead.org>: lib: fix test_hmm.c reference after free Subsystem: misc Rikard Falkeborn <rikard.falkeborn@gmail.com>: linux/bits.h: fix unsigned less than zero warnings Subsystem: mm/slab Waiman Long <longman@redhat.com>: mm, slab: fix sign conversion problem in memcg_uncharge_slab() Subsystem: mm/slab Waiman Long <longman@redhat.com>: mm/slab: use memzero_explicit() in kzfree() Subsystem: mm/slub Sebastian Andrzej Siewior <bigeasy@linutronix.de>: slub: cure list_slab_objects() from double fix Subsystem: mm/swap Hugh Dickins <hughd@google.com>: mm: fix swap cache node allocation mask Subsystem: mm/pagemap Arjun Roy <arjunroy@google.com>: mm/memory.c: properly pte_offset_map_lock/unlock in vm_insert_pages() Christophe Leroy <christophe.leroy@csgroup.eu>: mm/debug_vm_pgtable: fix build failure with powerpc 8xx Stephen Rothwell <sfr@canb.auug.org.au>: make asm-generic/cacheflush.h more standalone Nathan Chancellor <natechancellor@gmail.com>: media: omap3isp: remove cacheflush.h Subsystem: mm/vmalloc Masanari Iida <standby24x7@gmail.com>: mm/vmalloc.c: fix a warning while make xmldocs Subsystem: mm/memcg Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: handle div0 crash race condition in memory.low Muchun Song <songmuchun@bytedance.com>: mm/memcontrol.c: add missed css_put() Chris Down <chris@chrisdown.name>: mm/memcontrol.c: prevent missed memory.low load tears Subsystem: mm/gup Souptick Joarder <jrdr.linux@gmail.com>: docs: mm/gup: minor documentation update Subsystem: mm/thp Yang Shi <yang.shi@linux.alibaba.com>: doc: THP CoW fault no longer allocate THP Subsystem: mm/vmscan Johannes Weiner <hannes@cmpxchg.org>: Patch series "fix for "mm: balance LRU lists based on relative thrashing" patchset": mm: workingset: age nonresident information alongside anonymous pages Joonsoo Kim <iamjoonsoo.kim@lge.com>: mm/swap: fix for "mm: workingset: age nonresident information alongside anonymous pages" mm/memory: fix IO cost for anonymous page Subsystem: x86 Christoph Hellwig <hch@lst.de>: Patch series "fix a hyperv W^X violation and remove vmalloc_exec": x86/hyperv: allocate the hypercall page with only read and execute bits arm64: use PAGE_KERNEL_ROX directly in alloc_insn_page mm: remove vmalloc_exec Subsystem: mm/memory-hotplug Ben Widawsky <ben.widawsky@intel.com>: mm/memory_hotplug.c: fix false softlockup during pfn range removal Subsystem: MAINTAINERS Luc Van Oostenryck <luc.vanoostenryck@gmail.com>: MAINTAINERS: update info for sparse Documentation/admin-guide/cgroup-v2.rst | 4 +- Documentation/admin-guide/mm/transhuge.rst | 3 - Documentation/core-api/pin_user_pages.rst | 2 - MAINTAINERS | 4 +- arch/arm64/kernel/probes/kprobes.c | 12 +------ arch/openrisc/kernel/dma.c | 5 +++ arch/x86/hyperv/hv_init.c | 4 +- arch/x86/include/asm/pgtable_types.h | 2 + drivers/media/platform/omap3isp/isp.c | 2 - drivers/media/platform/omap3isp/ispvideo.c | 1 fs/ocfs2/dlmglue.c | 17 ++++++++++ fs/ocfs2/ocfs2.h | 1 fs/ocfs2/ocfs2_fs.h | 4 +- fs/ocfs2/suballoc.c | 9 +++-- include/asm-generic/cacheflush.h | 5 +++ include/linux/bits.h | 3 + include/linux/mmzone.h | 4 +- include/linux/swap.h | 1 include/linux/vmalloc.h | 1 kernel/kexec_file.c | 36 ++++------------------ kernel/module.c | 4 +- lib/test_hmm.c | 3 - mm/compaction.c | 17 ++++++++-- mm/debug_vm_pgtable.c | 4 +- mm/memcontrol.c | 18 ++++++++--- mm/memory.c | 33 +++++++++++++------- mm/memory_hotplug.c | 13 ++++++-- mm/nommu.c | 17 ---------- mm/slab.h | 4 +- mm/slab_common.c | 2 - mm/slub.c | 19 ++--------- mm/swap.c | 3 - mm/swap_state.c | 4 +- mm/vmalloc.c | 21 ------------- mm/vmscan.c | 3 + mm/workingset.c | 46 +++++++++++++++++------------ 36 files changed, 168 insertions(+), 163 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-26 3:28 incoming Andrew Morton @ 2020-06-26 6:51 ` Linus Torvalds 2020-06-26 7:31 ` incoming Linus Torvalds 2020-06-26 17:39 ` incoming Konstantin Ryabitsev 0 siblings, 2 replies; 530+ messages in thread From: Linus Torvalds @ 2020-06-26 6:51 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits On Thu, Jun 25, 2020 at 8:28 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 32 patches, based on 908f7d12d3ba51dfe0449b9723199b423f97ca9a. You didn't cc lkml, so now none of the nice 'b4' automation seems to work for this series.. Yes, this cover-letter went to linux-mm (which is on lore), but the individual patches didn't. Konstantin, maybe mm-commits could be on lore too and then they'd have been caught that way? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-26 6:51 ` incoming Linus Torvalds @ 2020-06-26 7:31 ` Linus Torvalds 2020-06-26 17:39 ` incoming Konstantin Ryabitsev 1 sibling, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-06-26 7:31 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits On Thu, Jun 25, 2020 at 11:51 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > You didn't cc lkml, so now none of the nice 'b4' automation seems to > work for this series.. Note that I've picked them up the old-fashioned way, so don't re-send them. So more of a note for "please, next time..." Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-26 6:51 ` incoming Linus Torvalds 2020-06-26 7:31 ` incoming Linus Torvalds @ 2020-06-26 17:39 ` Konstantin Ryabitsev 2020-06-26 17:40 ` incoming Konstantin Ryabitsev 1 sibling, 1 reply; 530+ messages in thread From: Konstantin Ryabitsev @ 2020-06-26 17:39 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, Linux-MM, mm-commits On Thu, Jun 25, 2020 at 11:51:06PM -0700, Linus Torvalds wrote: > On Thu, Jun 25, 2020 at 8:28 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > 32 patches, based on 908f7d12d3ba51dfe0449b9723199b423f97ca9a. > > You didn't cc lkml, so now none of the nice 'b4' automation seems to > work for this series.. > > Yes, this cover-letter went to linux-mm (which is on lore), but the > individual patches didn't. > > Konstantin, maybe mm-commits could be on lore too and then they'd have > been caught that way? Yes, I already have a request from Kees for linux-mm addition, so that should show up in archives before long. -K ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-26 17:39 ` incoming Konstantin Ryabitsev @ 2020-06-26 17:40 ` Konstantin Ryabitsev 0 siblings, 0 replies; 530+ messages in thread From: Konstantin Ryabitsev @ 2020-06-26 17:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, Linux-MM, mm-commits On Fri, 26 Jun 2020 at 13:39, Konstantin Ryabitsev <konstantin@linuxfoundation.org> wrote: > > Konstantin, maybe mm-commits could be on lore too and then they'd have > > been caught that way? > > Yes, I already have a request from Kees for linux-mm addition, so that > should show up in archives before long. correction: mm-commits, that is -K ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-12 0:30 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-12 0:30 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits A few fixes and stragglers. 5 patches, based on 623f6dc593eaf98b91916836785278eddddaacf8. Subsystems affected by this patch series: mm/memory-failure ocfs2 lib/lzo misc Subsystem: mm/memory-failure Naoya Horiguchi <nao.horiguchi@gmail.com>: Patch series "hwpoison: fixes signaling on memory error": mm/memory-failure: prioritize prctl(PR_MCE_KILL) over vm.memory_failure_early_kill mm/memory-failure: send SIGBUS(BUS_MCEERR_AR) only to current thread Subsystem: ocfs2 Tom Seewald <tseewald@gmail.com>: ocfs2: fix build failure when TCP/IP is disabled Subsystem: lib/lzo Dave Rodgman <dave.rodgman@arm.com>: lib/lzo: fix ambiguous encoding bug in lzo-rle Subsystem: misc Christoph Hellwig <hch@lst.de>: amdgpu: a NULL ->mm does not mean a thread is a kthread Documentation/lzo.txt | 8 ++++- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 2 - fs/ocfs2/Kconfig | 2 - lib/lzo/lzo1x_compress.c | 13 ++++++++ mm/memory-failure.c | 43 +++++++++++++++++------------ 5 files changed, 47 insertions(+), 21 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-11 1:40 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-11 1:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - various hotfixes and minor things - hch's use_mm/unuse_mm clearnups - new syscall process_madvise(): perform madvise() on a process other than self 25 patches, based on 6f630784cc0d92fb58ea326e2bc01aa056279ecb. Subsystems affected by this patch series: mm/hugetlb scripts kcov lib nilfs checkpatch lib mm/debug ocfs2 lib misc mm/madvise Subsystem: mm/hugetlb Dan Carpenter <dan.carpenter@oracle.com>: khugepaged: selftests: fix timeout condition in wait_for_scan() Subsystem: scripts SeongJae Park <sjpark@amazon.de>: scripts/spelling: add a few more typos Subsystem: kcov Andrey Konovalov <andreyknvl@google.com>: kcov: check kcov_softirq in kcov_remote_stop() Subsystem: lib Joe Perches <joe@perches.com>: lib/lz4/lz4_decompress.c: document deliberate use of `&' Subsystem: nilfs Ryusuke Konishi <konishi.ryusuke@gmail.com>: nilfs2: fix null pointer dereference at nilfs_segctor_do_construct() Subsystem: checkpatch Tim Froidcoeur <tim.froidcoeur@tessares.net>: checkpatch: correct check for kernel parameters doc Subsystem: lib Alexander Gordeev <agordeev@linux.ibm.com>: lib: fix bitmap_parse() on 64-bit big endian archs Subsystem: mm/debug "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/debug_vm_pgtable: fix kernel crash by checking for THP support Subsystem: ocfs2 Keyur Patel <iamkeyur96@gmail.com>: ocfs2: fix spelling mistake and grammar Ben Widawsky <ben.widawsky@intel.com>: mm: add comments on pglist_data zones Subsystem: lib Wei Yang <richard.weiyang@gmail.com>: lib: test get_count_order/long in test_bitops.c Subsystem: misc Walter Wu <walter-zh.wu@mediatek.com>: stacktrace: cleanup inconsistent variable type Christoph Hellwig <hch@lst.de>: Patch series "improve use_mm / unuse_mm", v2: kernel: move use_mm/unuse_mm to kthread.c kernel: move use_mm/unuse_mm to kthread.c kernel: better document the use_mm/unuse_mm API contract kernel: set USER_DS in kthread_use_mm Subsystem: mm/madvise Minchan Kim <minchan@kernel.org>: Patch series "introduce memory hinting API for external process", v7: mm/madvise: pass task and mm to do_madvise mm/madvise: introduce process_madvise() syscall: an external memory hinting API mm/madvise: check fatal signal pending of target process pid: move pidfd_get_pid() to pid.c mm/madvise: support both pid and pidfd for process_madvise Oleksandr Natalenko <oleksandr@redhat.com>: mm/madvise: allow KSM hints for remote API Minchan Kim <minchan@kernel.org>: mm: support vector address ranges for process_madvise mm: use only pidfd for process_madvise syscall YueHaibing <yuehaibing@huawei.com>: mm/madvise.c: remove duplicated include arch/alpha/kernel/syscalls/syscall.tbl | 1 arch/arm/tools/syscall.tbl | 1 arch/arm64/include/asm/unistd.h | 2 arch/arm64/include/asm/unistd32.h | 4 arch/ia64/kernel/syscalls/syscall.tbl | 1 arch/m68k/kernel/syscalls/syscall.tbl | 1 arch/microblaze/kernel/syscalls/syscall.tbl | 1 arch/mips/kernel/syscalls/syscall_n32.tbl | 3 arch/mips/kernel/syscalls/syscall_n64.tbl | 1 arch/mips/kernel/syscalls/syscall_o32.tbl | 3 arch/parisc/kernel/syscalls/syscall.tbl | 3 arch/powerpc/kernel/syscalls/syscall.tbl | 3 arch/powerpc/platforms/powernv/vas-fault.c | 4 arch/s390/kernel/syscalls/syscall.tbl | 3 arch/sh/kernel/syscalls/syscall.tbl | 1 arch/sparc/kernel/syscalls/syscall.tbl | 3 arch/x86/entry/syscalls/syscall_32.tbl | 3 arch/x86/entry/syscalls/syscall_64.tbl | 5 arch/xtensa/kernel/syscalls/syscall.tbl | 1 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 5 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 1 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v10.c | 1 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 2 drivers/gpu/drm/i915/gvt/kvmgt.c | 2 drivers/usb/gadget/function/f_fs.c | 10 drivers/usb/gadget/legacy/inode.c | 6 drivers/vfio/vfio_iommu_type1.c | 6 drivers/vhost/vhost.c | 8 fs/aio.c | 1 fs/io-wq.c | 15 - fs/io_uring.c | 11 fs/nilfs2/segment.c | 2 fs/ocfs2/mmap.c | 2 include/linux/compat.h | 10 include/linux/kthread.h | 9 include/linux/mm.h | 3 include/linux/mmu_context.h | 5 include/linux/mmzone.h | 14 include/linux/pid.h | 1 include/linux/stacktrace.h | 2 include/linux/syscalls.h | 16 - include/uapi/asm-generic/unistd.h | 7 kernel/exit.c | 17 - kernel/kcov.c | 26 + kernel/kthread.c | 95 +++++- kernel/pid.c | 17 + kernel/sys_ni.c | 2 lib/Kconfig.debug | 10 lib/bitmap.c | 9 lib/lz4/lz4_decompress.c | 3 lib/test_bitops.c | 53 +++ mm/Makefile | 2 mm/debug_vm_pgtable.c | 6 mm/madvise.c | 295 ++++++++++++++------ mm/mmu_context.c | 64 ---- mm/oom_kill.c | 6 mm/vmacache.c | 4 scripts/checkpatch.pl | 4 scripts/spelling.txt | 9 tools/testing/selftests/vm/khugepaged.c | 2 62 files changed, 526 insertions(+), 285 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-09 4:29 Andrew Morton 2020-06-09 16:58 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-06-09 4:29 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - a kernel-wide sweep of show_stack() - pagetable cleanups - abstract out accesses to mmap_sem - prep for mmap_sem scalability work - hch's user acess work 93 patches, based on abfbb29297c27e3f101f348dc9e467b0fe70f919: Subsystems affected by this patch series: debug mm/pagemap mm/maccess mm/documentation Subsystem: debug Dmitry Safonov <dima@arista.com>: Patch series "Add log level to show_stack()", v3: kallsyms/printk: add loglvl to print_ip_sym() alpha: add show_stack_loglvl() arc: add show_stack_loglvl() arm/asm: add loglvl to c_backtrace() arm: add loglvl to unwind_backtrace() arm: add loglvl to dump_backtrace() arm: wire up dump_backtrace_{entry,stm} arm: add show_stack_loglvl() arm64: add loglvl to dump_backtrace() arm64: add show_stack_loglvl() c6x: add show_stack_loglvl() csky: add show_stack_loglvl() h8300: add show_stack_loglvl() hexagon: add show_stack_loglvl() ia64: pass log level as arg into ia64_do_show_stack() ia64: add show_stack_loglvl() m68k: add show_stack_loglvl() microblaze: add loglvl to microblaze_unwind_inner() microblaze: add loglvl to microblaze_unwind() microblaze: add show_stack_loglvl() mips: add show_stack_loglvl() nds32: add show_stack_loglvl() nios2: add show_stack_loglvl() openrisc: add show_stack_loglvl() parisc: add show_stack_loglvl() powerpc: add show_stack_loglvl() riscv: add show_stack_loglvl() s390: add show_stack_loglvl() sh: add loglvl to dump_mem() sh: remove needless printk() sh: add loglvl to printk_address() sh: add loglvl to show_trace() sh: add show_stack_loglvl() sparc: add show_stack_loglvl() um/sysrq: remove needless variable sp um: add show_stack_loglvl() unicore32: remove unused pmode argument in c_backtrace() unicore32: add loglvl to c_backtrace() unicore32: add show_stack_loglvl() x86: add missing const qualifiers for log_lvl x86: add show_stack_loglvl() xtensa: add loglvl to show_trace() xtensa: add show_stack_loglvl() sysrq: use show_stack_loglvl() x86/amd_gart: print stacktrace for a leak with KERN_ERR power: use show_stack_loglvl() kdb: don't play with console_loglevel sched: print stack trace with KERN_INFO kernel: use show_stack_loglvl() kernel: rename show_stack_loglvl() => show_stack() Subsystem: mm/pagemap Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: consolidate definitions of page table accessors", v2: mm: don't include asm/pgtable.h if linux/mm.h is already included mm: introduce include/linux/pgtable.h mm: reorder includes after introduction of linux/pgtable.h csky: replace definitions of __pXd_offset() with pXd_index() m68k/mm/motorola: move comment about page table allocation funcitons m68k/mm: move {cache,nocahe}_page() definitions close to their user x86/mm: simplify init_trampoline() and surrounding logic mm: pgtable: add shortcuts for accessing kernel PMD and PTE mm: consolidate pte_index() and pte_offset_*() definitions Michel Lespinasse <walken@google.com>: mmap locking API: initial implementation as rwsem wrappers MMU notifier: use the new mmap locking API DMA reservations: use the new mmap locking API mmap locking API: use coccinelle to convert mmap_sem rwsem call sites mmap locking API: convert mmap_sem call sites missed by coccinelle mmap locking API: convert nested write lock sites mmap locking API: add mmap_read_trylock_non_owner() mmap locking API: add MMAP_LOCK_INITIALIZER mmap locking API: add mmap_assert_locked() and mmap_assert_write_locked() mmap locking API: rename mmap_sem to mmap_lock mmap locking API: convert mmap_sem API comments mmap locking API: convert mmap_sem comments Subsystem: mm/maccess Christoph Hellwig <hch@lst.de>: Patch series "clean up and streamline probe_kernel_* and friends", v4: maccess: unexport probe_kernel_write() maccess: remove various unused weak aliases maccess: remove duplicate kerneldoc comments maccess: clarify kerneldoc comments maccess: update the top of file comment maccess: rename strncpy_from_unsafe_user to strncpy_from_user_nofault maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_nofault maccess: rename strnlen_unsafe_user to strnlen_user_nofault maccess: remove probe_read_common and probe_write_common maccess: unify the probe kernel arch hooks bpf: factor out a bpf_trace_copy_string helper bpf: handle the compat string in bpf_trace_copy_string better Andrew Morton <akpm@linux-foundation.org>: bpf:bpf_seq_printf(): handle potentially unsafe format string better Christoph Hellwig <hch@lst.de>: bpf: rework the compat kernel probe handling tracing/kprobes: handle mixed kernel/userspace probes better maccess: remove strncpy_from_unsafe maccess: always use strict semantics for probe_kernel_read maccess: move user access routines together maccess: allow architectures to provide kernel probing directly x86: use non-set_fs based maccess routines maccess: return -ERANGE when probe_kernel_read() fails Subsystem: mm/documentation Luis Chamberlain <mcgrof@kernel.org>: include/linux/cache.h: expand documentation over __read_mostly Documentation/admin-guide/mm/numa_memory_policy.rst | 10 Documentation/admin-guide/mm/userfaultfd.rst | 2 Documentation/filesystems/locking.rst | 2 Documentation/vm/hmm.rst | 6 Documentation/vm/transhuge.rst | 4 arch/alpha/boot/bootp.c | 1 arch/alpha/boot/bootpz.c | 1 arch/alpha/boot/main.c | 1 arch/alpha/include/asm/io.h | 1 arch/alpha/include/asm/pgtable.h | 16 arch/alpha/kernel/process.c | 1 arch/alpha/kernel/proto.h | 4 arch/alpha/kernel/ptrace.c | 1 arch/alpha/kernel/setup.c | 1 arch/alpha/kernel/smp.c | 1 arch/alpha/kernel/sys_alcor.c | 1 arch/alpha/kernel/sys_cabriolet.c | 1 arch/alpha/kernel/sys_dp264.c | 1 arch/alpha/kernel/sys_eb64p.c | 1 arch/alpha/kernel/sys_eiger.c | 1 arch/alpha/kernel/sys_jensen.c | 1 arch/alpha/kernel/sys_marvel.c | 1 arch/alpha/kernel/sys_miata.c | 1 arch/alpha/kernel/sys_mikasa.c | 1 arch/alpha/kernel/sys_nautilus.c | 1 arch/alpha/kernel/sys_noritake.c | 1 arch/alpha/kernel/sys_rawhide.c | 1 arch/alpha/kernel/sys_ruffian.c | 1 arch/alpha/kernel/sys_rx164.c | 1 arch/alpha/kernel/sys_sable.c | 1 arch/alpha/kernel/sys_sio.c | 1 arch/alpha/kernel/sys_sx164.c | 1 arch/alpha/kernel/sys_takara.c | 1 arch/alpha/kernel/sys_titan.c | 1 arch/alpha/kernel/sys_wildfire.c | 1 arch/alpha/kernel/traps.c | 40 arch/alpha/mm/fault.c | 12 arch/alpha/mm/init.c | 1 arch/arc/include/asm/bug.h | 3 arch/arc/include/asm/pgtable.h | 24 arch/arc/kernel/process.c | 4 arch/arc/kernel/stacktrace.c | 29 arch/arc/kernel/troubleshoot.c | 6 arch/arc/mm/fault.c | 6 arch/arc/mm/highmem.c | 14 arch/arc/mm/tlbex.S | 4 arch/arm/include/asm/bug.h | 3 arch/arm/include/asm/efi.h | 3 arch/arm/include/asm/fixmap.h | 4 arch/arm/include/asm/idmap.h | 2 arch/arm/include/asm/pgtable-2level.h | 1 arch/arm/include/asm/pgtable-3level.h | 7 arch/arm/include/asm/pgtable-nommu.h | 3 arch/arm/include/asm/pgtable.h | 25 arch/arm/include/asm/traps.h | 3 arch/arm/include/asm/unwind.h | 3 arch/arm/kernel/head.S | 4 arch/arm/kernel/machine_kexec.c | 1 arch/arm/kernel/module.c | 1 arch/arm/kernel/process.c | 4 arch/arm/kernel/ptrace.c | 1 arch/arm/kernel/smp.c | 1 arch/arm/kernel/suspend.c | 4 arch/arm/kernel/swp_emulate.c | 4 arch/arm/kernel/traps.c | 61 arch/arm/kernel/unwind.c | 7 arch/arm/kernel/vdso.c | 2 arch/arm/kernel/vmlinux.lds.S | 4 arch/arm/lib/backtrace-clang.S | 9 arch/arm/lib/backtrace.S | 14 arch/arm/lib/uaccess_with_memcpy.c | 16 arch/arm/mach-ebsa110/core.c | 1 arch/arm/mach-footbridge/common.c | 1 arch/arm/mach-imx/mm-imx21.c | 1 arch/arm/mach-imx/mm-imx27.c | 1 arch/arm/mach-imx/mm-imx3.c | 1 arch/arm/mach-integrator/core.c | 4 arch/arm/mach-iop32x/i2c.c | 1 arch/arm/mach-iop32x/iq31244.c | 1 arch/arm/mach-iop32x/iq80321.c | 1 arch/arm/mach-iop32x/n2100.c | 1 arch/arm/mach-ixp4xx/common.c | 1 arch/arm/mach-keystone/platsmp.c | 4 arch/arm/mach-sa1100/assabet.c | 3 arch/arm/mach-sa1100/hackkit.c | 4 arch/arm/mach-tegra/iomap.h | 2 arch/arm/mach-zynq/common.c | 4 arch/arm/mm/copypage-v4mc.c | 1 arch/arm/mm/copypage-v6.c | 1 arch/arm/mm/copypage-xscale.c | 1 arch/arm/mm/dump.c | 1 arch/arm/mm/fault-armv.c | 1 arch/arm/mm/fault.c | 9 arch/arm/mm/highmem.c | 4 arch/arm/mm/idmap.c | 4 arch/arm/mm/ioremap.c | 31 arch/arm/mm/mm.h | 8 arch/arm/mm/mmu.c | 7 arch/arm/mm/pageattr.c | 1 arch/arm/mm/proc-arm1020.S | 4 arch/arm/mm/proc-arm1020e.S | 4 arch/arm/mm/proc-arm1022.S | 4 arch/arm/mm/proc-arm1026.S | 4 arch/arm/mm/proc-arm720.S | 4 arch/arm/mm/proc-arm740.S | 4 arch/arm/mm/proc-arm7tdmi.S | 4 arch/arm/mm/proc-arm920.S | 4 arch/arm/mm/proc-arm922.S | 4 arch/arm/mm/proc-arm925.S | 4 arch/arm/mm/proc-arm926.S | 4 arch/arm/mm/proc-arm940.S | 4 arch/arm/mm/proc-arm946.S | 4 arch/arm/mm/proc-arm9tdmi.S | 4 arch/arm/mm/proc-fa526.S | 4 arch/arm/mm/proc-feroceon.S | 4 arch/arm/mm/proc-mohawk.S | 4 arch/arm/mm/proc-sa110.S | 4 arch/arm/mm/proc-sa1100.S | 4 arch/arm/mm/proc-v6.S | 4 arch/arm/mm/proc-v7.S | 4 arch/arm/mm/proc-xsc3.S | 4 arch/arm/mm/proc-xscale.S | 4 arch/arm/mm/pv-fixup-asm.S | 4 arch/arm64/include/asm/io.h | 4 arch/arm64/include/asm/kernel-pgtable.h | 2 arch/arm64/include/asm/kvm_mmu.h | 4 arch/arm64/include/asm/mmu_context.h | 4 arch/arm64/include/asm/pgtable.h | 40 arch/arm64/include/asm/stacktrace.h | 3 arch/arm64/include/asm/stage2_pgtable.h | 2 arch/arm64/include/asm/vmap_stack.h | 4 arch/arm64/kernel/acpi.c | 4 arch/arm64/kernel/head.S | 4 arch/arm64/kernel/hibernate.c | 5 arch/arm64/kernel/kaslr.c | 4 arch/arm64/kernel/process.c | 2 arch/arm64/kernel/ptrace.c | 1 arch/arm64/kernel/smp.c | 1 arch/arm64/kernel/suspend.c | 4 arch/arm64/kernel/traps.c | 37 arch/arm64/kernel/vdso.c | 8 arch/arm64/kernel/vmlinux.lds.S | 3 arch/arm64/kvm/mmu.c | 14 arch/arm64/mm/dump.c | 1 arch/arm64/mm/fault.c | 9 arch/arm64/mm/kasan_init.c | 3 arch/arm64/mm/mmu.c | 8 arch/arm64/mm/pageattr.c | 1 arch/arm64/mm/proc.S | 4 arch/c6x/include/asm/pgtable.h | 3 arch/c6x/kernel/traps.c | 28 arch/csky/include/asm/io.h | 2 arch/csky/include/asm/pgtable.h | 37 arch/csky/kernel/module.c | 1 arch/csky/kernel/ptrace.c | 5 arch/csky/kernel/stacktrace.c | 20 arch/csky/kernel/vdso.c | 4 arch/csky/mm/fault.c | 10 arch/csky/mm/highmem.c | 2 arch/csky/mm/init.c | 7 arch/csky/mm/tlb.c | 1 arch/h8300/include/asm/pgtable.h | 1 arch/h8300/kernel/process.c | 1 arch/h8300/kernel/setup.c | 1 arch/h8300/kernel/signal.c | 1 arch/h8300/kernel/traps.c | 26 arch/h8300/mm/fault.c | 1 arch/h8300/mm/init.c | 1 arch/h8300/mm/memory.c | 1 arch/hexagon/include/asm/fixmap.h | 4 arch/hexagon/include/asm/pgtable.h | 55 arch/hexagon/kernel/traps.c | 39 arch/hexagon/kernel/vdso.c | 4 arch/hexagon/mm/uaccess.c | 2 arch/hexagon/mm/vm_fault.c | 9 arch/ia64/include/asm/pgtable.h | 34 arch/ia64/include/asm/ptrace.h | 1 arch/ia64/include/asm/uaccess.h | 2 arch/ia64/kernel/efi.c | 1 arch/ia64/kernel/entry.S | 4 arch/ia64/kernel/head.S | 5 arch/ia64/kernel/irq_ia64.c | 4 arch/ia64/kernel/ivt.S | 4 arch/ia64/kernel/kprobes.c | 4 arch/ia64/kernel/mca.c | 2 arch/ia64/kernel/mca_asm.S | 4 arch/ia64/kernel/perfmon.c | 8 arch/ia64/kernel/process.c | 37 arch/ia64/kernel/ptrace.c | 1 arch/ia64/kernel/relocate_kernel.S | 6 arch/ia64/kernel/setup.c | 4 arch/ia64/kernel/smp.c | 1 arch/ia64/kernel/smpboot.c | 1 arch/ia64/kernel/uncached.c | 4 arch/ia64/kernel/vmlinux.lds.S | 4 arch/ia64/mm/contig.c | 1 arch/ia64/mm/fault.c | 17 arch/ia64/mm/init.c | 12 arch/m68k/68000/m68EZ328.c | 2 arch/m68k/68000/m68VZ328.c | 4 arch/m68k/68000/timers.c | 1 arch/m68k/amiga/config.c | 1 arch/m68k/apollo/config.c | 1 arch/m68k/atari/atasound.c | 1 arch/m68k/atari/stram.c | 1 arch/m68k/bvme6000/config.c | 1 arch/m68k/include/asm/mcf_pgtable.h | 63 arch/m68k/include/asm/motorola_pgalloc.h | 8 arch/m68k/include/asm/motorola_pgtable.h | 84 - arch/m68k/include/asm/pgtable_mm.h | 1 arch/m68k/include/asm/pgtable_no.h | 2 arch/m68k/include/asm/sun3_pgtable.h | 24 arch/m68k/include/asm/sun3xflop.h | 4 arch/m68k/kernel/head.S | 4 arch/m68k/kernel/process.c | 1 arch/m68k/kernel/ptrace.c | 1 arch/m68k/kernel/setup_no.c | 1 arch/m68k/kernel/signal.c | 1 arch/m68k/kernel/sys_m68k.c | 14 arch/m68k/kernel/traps.c | 27 arch/m68k/kernel/uboot.c | 1 arch/m68k/mac/config.c | 1 arch/m68k/mm/fault.c | 10 arch/m68k/mm/init.c | 2 arch/m68k/mm/mcfmmu.c | 1 arch/m68k/mm/motorola.c | 65 arch/m68k/mm/sun3kmap.c | 1 arch/m68k/mm/sun3mmu.c | 1 arch/m68k/mvme147/config.c | 1 arch/m68k/mvme16x/config.c | 1 arch/m68k/q40/config.c | 1 arch/m68k/sun3/config.c | 1 arch/m68k/sun3/dvma.c | 1 arch/m68k/sun3/mmu_emu.c | 1 arch/m68k/sun3/sun3dvma.c | 1 arch/m68k/sun3x/dvma.c | 1 arch/m68k/sun3x/prom.c | 1 arch/microblaze/include/asm/pgalloc.h | 4 arch/microblaze/include/asm/pgtable.h | 23 arch/microblaze/include/asm/uaccess.h | 2 arch/microblaze/include/asm/unwind.h | 3 arch/microblaze/kernel/hw_exception_handler.S | 4 arch/microblaze/kernel/module.c | 4 arch/microblaze/kernel/setup.c | 4 arch/microblaze/kernel/signal.c | 9 arch/microblaze/kernel/stacktrace.c | 4 arch/microblaze/kernel/traps.c | 28 arch/microblaze/kernel/unwind.c | 46 arch/microblaze/mm/fault.c | 17 arch/microblaze/mm/init.c | 9 arch/microblaze/mm/pgtable.c | 4 arch/mips/fw/arc/memory.c | 1 arch/mips/include/asm/fixmap.h | 3 arch/mips/include/asm/mach-generic/floppy.h | 1 arch/mips/include/asm/mach-jazz/floppy.h | 1 arch/mips/include/asm/pgtable-32.h | 22 arch/mips/include/asm/pgtable-64.h | 32 arch/mips/include/asm/pgtable.h | 2 arch/mips/jazz/irq.c | 4 arch/mips/jazz/jazzdma.c | 1 arch/mips/jazz/setup.c | 4 arch/mips/kernel/module.c | 1 arch/mips/kernel/process.c | 1 arch/mips/kernel/ptrace.c | 1 arch/mips/kernel/ptrace32.c | 1 arch/mips/kernel/smp-bmips.c | 1 arch/mips/kernel/traps.c | 58 arch/mips/kernel/vdso.c | 4 arch/mips/kvm/mips.c | 4 arch/mips/kvm/mmu.c | 20 arch/mips/kvm/tlb.c | 1 arch/mips/kvm/trap_emul.c | 2 arch/mips/lib/dump_tlb.c | 1 arch/mips/lib/r3k_dump_tlb.c | 1 arch/mips/mm/c-octeon.c | 1 arch/mips/mm/c-r3k.c | 11 arch/mips/mm/c-r4k.c | 11 arch/mips/mm/c-tx39.c | 11 arch/mips/mm/fault.c | 12 arch/mips/mm/highmem.c | 2 arch/mips/mm/init.c | 1 arch/mips/mm/page.c | 1 arch/mips/mm/pgtable-32.c | 1 arch/mips/mm/pgtable-64.c | 1 arch/mips/mm/sc-ip22.c | 1 arch/mips/mm/sc-mips.c | 1 arch/mips/mm/sc-r5k.c | 1 arch/mips/mm/tlb-r3k.c | 1 arch/mips/mm/tlb-r4k.c | 1 arch/mips/mm/tlbex.c | 4 arch/mips/sgi-ip27/ip27-init.c | 1 arch/mips/sgi-ip27/ip27-timer.c | 1 arch/mips/sgi-ip32/ip32-memory.c | 1 arch/nds32/include/asm/highmem.h | 3 arch/nds32/include/asm/pgtable.h | 22 arch/nds32/kernel/head.S | 4 arch/nds32/kernel/module.c | 2 arch/nds32/kernel/traps.c | 33 arch/nds32/kernel/vdso.c | 6 arch/nds32/mm/fault.c | 17 arch/nds32/mm/init.c | 13 arch/nds32/mm/proc.c | 7 arch/nios2/include/asm/pgtable.h | 24 arch/nios2/kernel/module.c | 1 arch/nios2/kernel/nios2_ksyms.c | 4 arch/nios2/kernel/traps.c | 35 arch/nios2/mm/fault.c | 14 arch/nios2/mm/init.c | 5 arch/nios2/mm/pgtable.c | 1 arch/nios2/mm/tlb.c | 1 arch/openrisc/include/asm/io.h | 3 arch/openrisc/include/asm/pgtable.h | 33 arch/openrisc/include/asm/tlbflush.h | 1 arch/openrisc/kernel/asm-offsets.c | 1 arch/openrisc/kernel/entry.S | 4 arch/openrisc/kernel/head.S | 4 arch/openrisc/kernel/or32_ksyms.c | 4 arch/openrisc/kernel/process.c | 1 arch/openrisc/kernel/ptrace.c | 1 arch/openrisc/kernel/setup.c | 1 arch/openrisc/kernel/traps.c | 27 arch/openrisc/mm/fault.c | 12 arch/openrisc/mm/init.c | 1 arch/openrisc/mm/ioremap.c | 4 arch/openrisc/mm/tlb.c | 1 arch/parisc/include/asm/io.h | 2 arch/parisc/include/asm/mmu_context.h | 1 arch/parisc/include/asm/pgtable.h | 33 arch/parisc/kernel/asm-offsets.c | 4 arch/parisc/kernel/entry.S | 4 arch/parisc/kernel/head.S | 4 arch/parisc/kernel/module.c | 1 arch/parisc/kernel/pacache.S | 4 arch/parisc/kernel/pci-dma.c | 2 arch/parisc/kernel/pdt.c | 4 arch/parisc/kernel/ptrace.c | 1 arch/parisc/kernel/smp.c | 1 arch/parisc/kernel/traps.c | 42 arch/parisc/lib/memcpy.c | 14 arch/parisc/mm/fault.c | 10 arch/parisc/mm/fixmap.c | 6 arch/parisc/mm/init.c | 1 arch/powerpc/include/asm/book3s/32/pgtable.h | 20 arch/powerpc/include/asm/book3s/64/pgtable.h | 43 arch/powerpc/include/asm/fixmap.h | 4 arch/powerpc/include/asm/io.h | 1 arch/powerpc/include/asm/kup.h | 2 arch/powerpc/include/asm/nohash/32/pgtable.h | 17 arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 4 arch/powerpc/include/asm/nohash/64/pgtable.h | 22 arch/powerpc/include/asm/nohash/pgtable.h | 2 arch/powerpc/include/asm/pgtable.h | 28 arch/powerpc/include/asm/pkeys.h | 2 arch/powerpc/include/asm/tlb.h | 2 arch/powerpc/kernel/asm-offsets.c | 1 arch/powerpc/kernel/btext.c | 4 arch/powerpc/kernel/fpu.S | 3 arch/powerpc/kernel/head_32.S | 4 arch/powerpc/kernel/head_40x.S | 4 arch/powerpc/kernel/head_44x.S | 4 arch/powerpc/kernel/head_8xx.S | 4 arch/powerpc/kernel/head_fsl_booke.S | 4 arch/powerpc/kernel/io-workarounds.c | 4 arch/powerpc/kernel/irq.c | 4 arch/powerpc/kernel/mce_power.c | 4 arch/powerpc/kernel/paca.c | 4 arch/powerpc/kernel/process.c | 30 arch/powerpc/kernel/prom.c | 4 arch/powerpc/kernel/prom_init.c | 4 arch/powerpc/kernel/rtas_pci.c | 4 arch/powerpc/kernel/setup-common.c | 4 arch/powerpc/kernel/setup_32.c | 4 arch/powerpc/kernel/setup_64.c | 4 arch/powerpc/kernel/signal_32.c | 1 arch/powerpc/kernel/signal_64.c | 1 arch/powerpc/kernel/smp.c | 4 arch/powerpc/kernel/stacktrace.c | 2 arch/powerpc/kernel/traps.c | 1 arch/powerpc/kernel/vdso.c | 7 arch/powerpc/kvm/book3s_64_mmu_radix.c | 4 arch/powerpc/kvm/book3s_hv.c | 6 arch/powerpc/kvm/book3s_hv_nested.c | 4 arch/powerpc/kvm/book3s_hv_rm_xics.c | 4 arch/powerpc/kvm/book3s_hv_rm_xive.c | 4 arch/powerpc/kvm/book3s_hv_uvmem.c | 18 arch/powerpc/kvm/e500_mmu_host.c | 4 arch/powerpc/kvm/fpu.S | 4 arch/powerpc/lib/code-patching.c | 1 arch/powerpc/mm/book3s32/hash_low.S | 4 arch/powerpc/mm/book3s32/mmu.c | 2 arch/powerpc/mm/book3s32/tlb.c | 6 arch/powerpc/mm/book3s64/hash_hugetlbpage.c | 1 arch/powerpc/mm/book3s64/hash_native.c | 4 arch/powerpc/mm/book3s64/hash_pgtable.c | 5 arch/powerpc/mm/book3s64/hash_utils.c | 4 arch/powerpc/mm/book3s64/iommu_api.c | 4 arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 1 arch/powerpc/mm/book3s64/radix_pgtable.c | 1 arch/powerpc/mm/book3s64/slb.c | 4 arch/powerpc/mm/book3s64/subpage_prot.c | 16 arch/powerpc/mm/copro_fault.c | 4 arch/powerpc/mm/fault.c | 23 arch/powerpc/mm/hugetlbpage.c | 1 arch/powerpc/mm/init-common.c | 4 arch/powerpc/mm/init_32.c | 1 arch/powerpc/mm/init_64.c | 1 arch/powerpc/mm/kasan/8xx.c | 4 arch/powerpc/mm/kasan/book3s_32.c | 2 arch/powerpc/mm/kasan/kasan_init_32.c | 8 arch/powerpc/mm/mem.c | 1 arch/powerpc/mm/nohash/40x.c | 5 arch/powerpc/mm/nohash/8xx.c | 2 arch/powerpc/mm/nohash/fsl_booke.c | 1 arch/powerpc/mm/nohash/tlb_low_64e.S | 4 arch/powerpc/mm/pgtable.c | 2 arch/powerpc/mm/pgtable_32.c | 5 arch/powerpc/mm/pgtable_64.c | 1 arch/powerpc/mm/ptdump/8xx.c | 2 arch/powerpc/mm/ptdump/bats.c | 4 arch/powerpc/mm/ptdump/book3s64.c | 2 arch/powerpc/mm/ptdump/hashpagetable.c | 1 arch/powerpc/mm/ptdump/ptdump.c | 1 arch/powerpc/mm/ptdump/shared.c | 2 arch/powerpc/oprofile/cell/spu_task_sync.c | 6 arch/powerpc/perf/callchain.c | 1 arch/powerpc/perf/callchain_32.c | 1 arch/powerpc/perf/callchain_64.c | 1 arch/powerpc/platforms/85xx/corenet_generic.c | 4 arch/powerpc/platforms/85xx/mpc85xx_cds.c | 4 arch/powerpc/platforms/85xx/qemu_e500.c | 4 arch/powerpc/platforms/85xx/sbc8548.c | 4 arch/powerpc/platforms/85xx/smp.c | 4 arch/powerpc/platforms/86xx/mpc86xx_smp.c | 4 arch/powerpc/platforms/8xx/cpm1.c | 1 arch/powerpc/platforms/8xx/micropatch.c | 1 arch/powerpc/platforms/cell/cbe_regs.c | 4 arch/powerpc/platforms/cell/interrupt.c | 4 arch/powerpc/platforms/cell/pervasive.c | 4 arch/powerpc/platforms/cell/setup.c | 1 arch/powerpc/platforms/cell/smp.c | 4 arch/powerpc/platforms/cell/spider-pic.c | 4 arch/powerpc/platforms/cell/spufs/file.c | 10 arch/powerpc/platforms/chrp/pci.c | 4 arch/powerpc/platforms/chrp/setup.c | 1 arch/powerpc/platforms/chrp/smp.c | 4 arch/powerpc/platforms/maple/setup.c | 1 arch/powerpc/platforms/maple/time.c | 1 arch/powerpc/platforms/powermac/setup.c | 1 arch/powerpc/platforms/powermac/smp.c | 4 arch/powerpc/platforms/powermac/time.c | 1 arch/powerpc/platforms/pseries/lpar.c | 4 arch/powerpc/platforms/pseries/setup.c | 1 arch/powerpc/platforms/pseries/smp.c | 4 arch/powerpc/sysdev/cpm2.c | 1 arch/powerpc/sysdev/fsl_85xx_cache_sram.c | 2 arch/powerpc/sysdev/mpic.c | 4 arch/powerpc/xmon/xmon.c | 1 arch/riscv/include/asm/fixmap.h | 4 arch/riscv/include/asm/io.h | 4 arch/riscv/include/asm/kasan.h | 4 arch/riscv/include/asm/pgtable-64.h | 7 arch/riscv/include/asm/pgtable.h | 22 arch/riscv/kernel/module.c | 2 arch/riscv/kernel/setup.c | 1 arch/riscv/kernel/soc.c | 2 arch/riscv/kernel/stacktrace.c | 23 arch/riscv/kernel/vdso.c | 4 arch/riscv/mm/cacheflush.c | 3 arch/riscv/mm/fault.c | 14 arch/riscv/mm/init.c | 31 arch/riscv/mm/kasan_init.c | 4 arch/riscv/mm/pageattr.c | 6 arch/riscv/mm/ptdump.c | 2 arch/s390/boot/ipl_parm.c | 4 arch/s390/boot/kaslr.c | 4 arch/s390/include/asm/hugetlb.h | 4 arch/s390/include/asm/kasan.h | 4 arch/s390/include/asm/pgtable.h | 15 arch/s390/include/asm/tlbflush.h | 1 arch/s390/kernel/asm-offsets.c | 4 arch/s390/kernel/dumpstack.c | 25 arch/s390/kernel/machine_kexec.c | 1 arch/s390/kernel/ptrace.c | 1 arch/s390/kernel/uv.c | 4 arch/s390/kernel/vdso.c | 5 arch/s390/kvm/gaccess.c | 8 arch/s390/kvm/interrupt.c | 4 arch/s390/kvm/kvm-s390.c | 32 arch/s390/kvm/priv.c | 38 arch/s390/mm/dump_pagetables.c | 1 arch/s390/mm/extmem.c | 4 arch/s390/mm/fault.c | 17 arch/s390/mm/gmap.c | 80 arch/s390/mm/init.c | 1 arch/s390/mm/kasan_init.c | 4 arch/s390/mm/pageattr.c | 13 arch/s390/mm/pgalloc.c | 2 arch/s390/mm/pgtable.c | 1 arch/s390/mm/vmem.c | 1 arch/s390/pci/pci_mmio.c | 4 arch/sh/include/asm/io.h | 2 arch/sh/include/asm/kdebug.h | 6 arch/sh/include/asm/pgtable-3level.h | 7 arch/sh/include/asm/pgtable.h | 2 arch/sh/include/asm/pgtable_32.h | 25 arch/sh/include/asm/processor_32.h | 2 arch/sh/kernel/dumpstack.c | 54 arch/sh/kernel/machine_kexec.c | 1 arch/sh/kernel/process_32.c | 2 arch/sh/kernel/ptrace_32.c | 1 arch/sh/kernel/signal_32.c | 1 arch/sh/kernel/sys_sh.c | 6 arch/sh/kernel/traps.c | 4 arch/sh/kernel/vsyscall/vsyscall.c | 4 arch/sh/mm/cache-sh3.c | 1 arch/sh/mm/cache-sh4.c | 11 arch/sh/mm/cache-sh7705.c | 1 arch/sh/mm/fault.c | 16 arch/sh/mm/kmap.c | 5 arch/sh/mm/nommu.c | 1 arch/sh/mm/pmb.c | 4 arch/sparc/include/asm/floppy_32.h | 4 arch/sparc/include/asm/highmem.h | 4 arch/sparc/include/asm/ide.h | 2 arch/sparc/include/asm/io-unit.h | 4 arch/sparc/include/asm/pgalloc_32.h | 4 arch/sparc/include/asm/pgalloc_64.h | 2 arch/sparc/include/asm/pgtable_32.h | 34 arch/sparc/include/asm/pgtable_64.h | 32 arch/sparc/kernel/cpu.c | 4 arch/sparc/kernel/entry.S | 4 arch/sparc/kernel/head_64.S | 4 arch/sparc/kernel/ktlb.S | 4 arch/sparc/kernel/leon_smp.c | 1 arch/sparc/kernel/pci.c | 4 arch/sparc/kernel/process_32.c | 29 arch/sparc/kernel/process_64.c | 3 arch/sparc/kernel/ptrace_32.c | 1 arch/sparc/kernel/ptrace_64.c | 1 arch/sparc/kernel/setup_32.c | 1 arch/sparc/kernel/setup_64.c | 1 arch/sparc/kernel/signal32.c | 1 arch/sparc/kernel/signal_32.c | 1 arch/sparc/kernel/signal_64.c | 1 arch/sparc/kernel/smp_32.c | 1 arch/sparc/kernel/smp_64.c | 1 arch/sparc/kernel/sun4m_irq.c | 4 arch/sparc/kernel/trampoline_64.S | 4 arch/sparc/kernel/traps_32.c | 4 arch/sparc/kernel/traps_64.c | 24 arch/sparc/lib/clear_page.S | 4 arch/sparc/lib/copy_page.S | 2 arch/sparc/mm/fault_32.c | 21 arch/sparc/mm/fault_64.c | 17 arch/sparc/mm/highmem.c | 12 arch/sparc/mm/hugetlbpage.c | 1 arch/sparc/mm/init_32.c | 1 arch/sparc/mm/init_64.c | 7 arch/sparc/mm/io-unit.c | 11 arch/sparc/mm/iommu.c | 9 arch/sparc/mm/tlb.c | 1 arch/sparc/mm/tsb.c | 4 arch/sparc/mm/ultra.S | 4 arch/sparc/vdso/vma.c | 4 arch/um/drivers/mconsole_kern.c | 2 arch/um/include/asm/mmu_context.h | 5 arch/um/include/asm/pgtable-3level.h | 4 arch/um/include/asm/pgtable.h | 69 arch/um/kernel/maccess.c | 12 arch/um/kernel/mem.c | 10 arch/um/kernel/process.c | 1 arch/um/kernel/skas/mmu.c | 3 arch/um/kernel/skas/uaccess.c | 1 arch/um/kernel/sysrq.c | 35 arch/um/kernel/tlb.c | 5 arch/um/kernel/trap.c | 15 arch/um/kernel/um_arch.c | 1 arch/unicore32/include/asm/pgtable.h | 19 arch/unicore32/kernel/hibernate.c | 4 arch/unicore32/kernel/hibernate_asm.S | 4 arch/unicore32/kernel/module.c | 1 arch/unicore32/kernel/setup.h | 4 arch/unicore32/kernel/traps.c | 50 arch/unicore32/lib/backtrace.S | 24 arch/unicore32/mm/alignment.c | 4 arch/unicore32/mm/fault.c | 9 arch/unicore32/mm/mm.h | 10 arch/unicore32/mm/proc-ucv2.S | 4 arch/x86/boot/compressed/kaslr_64.c | 4 arch/x86/entry/vdso/vma.c | 14 arch/x86/events/core.c | 4 arch/x86/include/asm/agp.h | 2 arch/x86/include/asm/asm-prototypes.h | 4 arch/x86/include/asm/efi.h | 4 arch/x86/include/asm/iomap.h | 1 arch/x86/include/asm/kaslr.h | 2 arch/x86/include/asm/mmu.h | 2 arch/x86/include/asm/pgtable-3level.h | 8 arch/x86/include/asm/pgtable.h | 89 - arch/x86/include/asm/pgtable_32.h | 11 arch/x86/include/asm/pgtable_64.h | 4 arch/x86/include/asm/setup.h | 12 arch/x86/include/asm/stacktrace.h | 2 arch/x86/include/asm/uaccess.h | 16 arch/x86/include/asm/xen/hypercall.h | 4 arch/x86/include/asm/xen/page.h | 1 arch/x86/kernel/acpi/boot.c | 4 arch/x86/kernel/acpi/sleep.c | 4 arch/x86/kernel/alternative.c | 1 arch/x86/kernel/amd_gart_64.c | 5 arch/x86/kernel/apic/apic_numachip.c | 4 arch/x86/kernel/cpu/bugs.c | 4 arch/x86/kernel/cpu/common.c | 4 arch/x86/kernel/cpu/intel.c | 4 arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 6 arch/x86/kernel/cpu/resctrl/rdtgroup.c | 6 arch/x86/kernel/crash_core_32.c | 4 arch/x86/kernel/crash_core_64.c | 4 arch/x86/kernel/doublefault_32.c | 1 arch/x86/kernel/dumpstack.c | 21 arch/x86/kernel/early_printk.c | 4 arch/x86/kernel/espfix_64.c | 2 arch/x86/kernel/head64.c | 4 arch/x86/kernel/head_64.S | 4 arch/x86/kernel/i8259.c | 4 arch/x86/kernel/irqinit.c | 4 arch/x86/kernel/kprobes/core.c | 4 arch/x86/kernel/kprobes/opt.c | 4 arch/x86/kernel/ldt.c | 2 arch/x86/kernel/machine_kexec_32.c | 1 arch/x86/kernel/machine_kexec_64.c | 1 arch/x86/kernel/module.c | 1 arch/x86/kernel/paravirt.c | 4 arch/x86/kernel/process_32.c | 1 arch/x86/kernel/process_64.c | 1 arch/x86/kernel/ptrace.c | 1 arch/x86/kernel/reboot.c | 4 arch/x86/kernel/smpboot.c | 4 arch/x86/kernel/tboot.c | 3 arch/x86/kernel/vm86_32.c | 4 arch/x86/kvm/mmu/paging_tmpl.h | 8 arch/x86/mm/cpu_entry_area.c | 4 arch/x86/mm/debug_pagetables.c | 2 arch/x86/mm/dump_pagetables.c | 1 arch/x86/mm/fault.c | 22 arch/x86/mm/init.c | 22 arch/x86/mm/init_32.c | 27 arch/x86/mm/init_64.c | 1 arch/x86/mm/ioremap.c | 4 arch/x86/mm/kasan_init_64.c | 1 arch/x86/mm/kaslr.c | 37 arch/x86/mm/maccess.c | 44 arch/x86/mm/mem_encrypt_boot.S | 2 arch/x86/mm/mmio-mod.c | 4 arch/x86/mm/pat/cpa-test.c | 1 arch/x86/mm/pat/memtype.c | 1 arch/x86/mm/pat/memtype_interval.c | 4 arch/x86/mm/pgtable.c | 1 arch/x86/mm/pgtable_32.c | 1 arch/x86/mm/pti.c | 1 arch/x86/mm/setup_nx.c | 4 arch/x86/platform/efi/efi_32.c | 4 arch/x86/platform/efi/efi_64.c | 1 arch/x86/platform/olpc/olpc_ofw.c | 4 arch/x86/power/cpu.c | 4 arch/x86/power/hibernate.c | 4 arch/x86/power/hibernate_32.c | 4 arch/x86/power/hibernate_64.c | 4 arch/x86/realmode/init.c | 4 arch/x86/um/vdso/vma.c | 4 arch/x86/xen/enlighten_pv.c | 1 arch/x86/xen/grant-table.c | 1 arch/x86/xen/mmu_pv.c | 4 arch/x86/xen/smp_pv.c | 2 arch/xtensa/include/asm/fixmap.h | 12 arch/xtensa/include/asm/highmem.h | 4 arch/xtensa/include/asm/initialize_mmu.h | 2 arch/xtensa/include/asm/mmu_context.h | 4 arch/xtensa/include/asm/pgtable.h | 20 arch/xtensa/kernel/entry.S | 4 arch/xtensa/kernel/process.c | 1 arch/xtensa/kernel/ptrace.c | 1 arch/xtensa/kernel/setup.c | 1 arch/xtensa/kernel/traps.c | 42 arch/xtensa/kernel/vectors.S | 4 arch/xtensa/mm/cache.c | 4 arch/xtensa/mm/fault.c | 12 arch/xtensa/mm/highmem.c | 2 arch/xtensa/mm/ioremap.c | 4 arch/xtensa/mm/kasan_init.c | 10 arch/xtensa/mm/misc.S | 4 arch/xtensa/mm/mmu.c | 5 drivers/acpi/scan.c | 3 drivers/android/binder_alloc.c | 14 drivers/atm/fore200e.c | 4 drivers/base/power/main.c | 4 drivers/block/z2ram.c | 4 drivers/char/agp/frontend.c | 1 drivers/char/agp/generic.c | 1 drivers/char/bsr.c | 1 drivers/char/mspec.c | 3 drivers/dma-buf/dma-resv.c | 5 drivers/firmware/efi/arm-runtime.c | 4 drivers/firmware/efi/efi.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 10 drivers/gpu/drm/amd/amdkfd/kfd_events.c | 4 drivers/gpu/drm/drm_vm.c | 4 drivers/gpu/drm/etnaviv/etnaviv_gem.c | 2 drivers/gpu/drm/i915/gem/i915_gem_mman.c | 4 drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 14 drivers/gpu/drm/i915/i915_mm.c | 1 drivers/gpu/drm/i915/i915_perf.c | 2 drivers/gpu/drm/nouveau/nouveau_svm.c | 22 drivers/gpu/drm/radeon/radeon_cs.c | 4 drivers/gpu/drm/radeon/radeon_gem.c | 6 drivers/gpu/drm/ttm/ttm_bo_vm.c | 10 drivers/infiniband/core/umem_odp.c | 4 drivers/infiniband/core/uverbs_main.c | 6 drivers/infiniband/hw/hfi1/mmu_rb.c | 2 drivers/infiniband/hw/mlx4/mr.c | 4 drivers/infiniband/hw/qib/qib_file_ops.c | 4 drivers/infiniband/hw/qib/qib_user_pages.c | 6 drivers/infiniband/hw/usnic/usnic_uiom.c | 4 drivers/infiniband/sw/rdmavt/mmap.c | 1 drivers/infiniband/sw/rxe/rxe_mmap.c | 1 drivers/infiniband/sw/siw/siw_mem.c | 4 drivers/iommu/amd_iommu_v2.c | 4 drivers/iommu/intel-svm.c | 4 drivers/macintosh/macio-adb.c | 4 drivers/macintosh/mediabay.c | 4 drivers/macintosh/via-pmu.c | 4 drivers/media/pci/bt8xx/bt878.c | 4 drivers/media/pci/bt8xx/btcx-risc.c | 4 drivers/media/pci/bt8xx/bttv-risc.c | 4 drivers/media/platform/davinci/vpbe_display.c | 1 drivers/media/v4l2-core/v4l2-common.c | 1 drivers/media/v4l2-core/videobuf-core.c | 4 drivers/media/v4l2-core/videobuf-dma-contig.c | 4 drivers/media/v4l2-core/videobuf-dma-sg.c | 10 drivers/media/v4l2-core/videobuf-vmalloc.c | 4 drivers/misc/cxl/cxllib.c | 9 drivers/misc/cxl/fault.c | 4 drivers/misc/genwqe/card_utils.c | 2 drivers/misc/sgi-gru/grufault.c | 25 drivers/misc/sgi-gru/grufile.c | 4 drivers/mtd/ubi/ubi.h | 2 drivers/net/ethernet/amd/7990.c | 4 drivers/net/ethernet/amd/hplance.c | 4 drivers/net/ethernet/amd/mvme147.c | 4 drivers/net/ethernet/amd/sun3lance.c | 4 drivers/net/ethernet/amd/sunlance.c | 4 drivers/net/ethernet/apple/bmac.c | 4 drivers/net/ethernet/apple/mace.c | 4 drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c | 4 drivers/net/ethernet/freescale/fs_enet/mac-fcc.c | 4 drivers/net/ethernet/freescale/fs_enet/mii-fec.c | 4 drivers/net/ethernet/i825xx/82596.c | 4 drivers/net/ethernet/korina.c | 4 drivers/net/ethernet/marvell/pxa168_eth.c | 4 drivers/net/ethernet/natsemi/jazzsonic.c | 4 drivers/net/ethernet/natsemi/macsonic.c | 4 drivers/net/ethernet/natsemi/xtsonic.c | 4 drivers/net/ethernet/sun/sunbmac.c | 4 drivers/net/ethernet/sun/sunhme.c | 1 drivers/net/ethernet/sun/sunqe.c | 4 drivers/oprofile/buffer_sync.c | 12 drivers/sbus/char/flash.c | 1 drivers/sbus/char/uctrl.c | 1 drivers/scsi/53c700.c | 4 drivers/scsi/a2091.c | 1 drivers/scsi/a3000.c | 1 drivers/scsi/arm/cumana_2.c | 4 drivers/scsi/arm/eesox.c | 4 drivers/scsi/arm/powertec.c | 4 drivers/scsi/dpt_i2o.c | 4 drivers/scsi/gvp11.c | 1 drivers/scsi/lasi700.c | 1 drivers/scsi/mac53c94.c | 4 drivers/scsi/mesh.c | 4 drivers/scsi/mvme147.c | 1 drivers/scsi/qlogicpti.c | 4 drivers/scsi/sni_53c710.c | 1 drivers/scsi/zorro_esp.c | 4 drivers/staging/android/ashmem.c | 4 drivers/staging/comedi/comedi_fops.c | 2 drivers/staging/kpc2000/kpc_dma/fileops.c | 4 drivers/staging/media/atomisp/pci/hmm/hmm_bo.c | 4 drivers/tee/optee/call.c | 4 drivers/tty/sysrq.c | 4 drivers/tty/vt/consolemap.c | 2 drivers/vfio/pci/vfio_pci.c | 22 drivers/vfio/vfio_iommu_type1.c | 8 drivers/vhost/vdpa.c | 4 drivers/video/console/newport_con.c | 1 drivers/video/fbdev/acornfb.c | 1 drivers/video/fbdev/atafb.c | 1 drivers/video/fbdev/cirrusfb.c | 1 drivers/video/fbdev/cyber2000fb.c | 1 drivers/video/fbdev/fb-puv3.c | 1 drivers/video/fbdev/hitfb.c | 1 drivers/video/fbdev/neofb.c | 1 drivers/video/fbdev/q40fb.c | 1 drivers/video/fbdev/savage/savagefb_driver.c | 1 drivers/xen/balloon.c | 1 drivers/xen/gntdev.c | 6 drivers/xen/grant-table.c | 1 drivers/xen/privcmd.c | 15 drivers/xen/xenbus/xenbus_probe.c | 1 drivers/xen/xenbus/xenbus_probe_backend.c | 1 drivers/xen/xenbus/xenbus_probe_frontend.c | 1 fs/aio.c | 4 fs/coredump.c | 8 fs/exec.c | 18 fs/ext2/file.c | 2 fs/ext4/super.c | 6 fs/hugetlbfs/inode.c | 2 fs/io_uring.c | 4 fs/kernfs/file.c | 4 fs/proc/array.c | 1 fs/proc/base.c | 24 fs/proc/meminfo.c | 1 fs/proc/nommu.c | 1 fs/proc/task_mmu.c | 34 fs/proc/task_nommu.c | 18 fs/proc/vmcore.c | 1 fs/userfaultfd.c | 46 fs/xfs/xfs_file.c | 2 fs/xfs/xfs_inode.c | 14 fs/xfs/xfs_iops.c | 4 include/asm-generic/io.h | 2 include/asm-generic/pgtable-nopmd.h | 1 include/asm-generic/pgtable-nopud.h | 1 include/asm-generic/pgtable.h | 1322 ---------------- include/linux/cache.h | 10 include/linux/crash_dump.h | 3 include/linux/dax.h | 1 include/linux/dma-noncoherent.h | 2 include/linux/fs.h | 4 include/linux/hmm.h | 2 include/linux/huge_mm.h | 2 include/linux/hugetlb.h | 2 include/linux/io-mapping.h | 4 include/linux/kallsyms.h | 4 include/linux/kasan.h | 4 include/linux/mempolicy.h | 2 include/linux/mm.h | 15 include/linux/mm_types.h | 4 include/linux/mmap_lock.h | 128 + include/linux/mmu_notifier.h | 13 include/linux/pagemap.h | 2 include/linux/pgtable.h | 1444 +++++++++++++++++- include/linux/rmap.h | 2 include/linux/sched/debug.h | 7 include/linux/sched/mm.h | 10 include/linux/uaccess.h | 62 include/xen/arm/page.h | 4 init/init_task.c | 1 ipc/shm.c | 8 kernel/acct.c | 6 kernel/bpf/stackmap.c | 21 kernel/bpf/syscall.c | 2 kernel/cgroup/cpuset.c | 4 kernel/debug/kdb/kdb_bt.c | 17 kernel/events/core.c | 10 kernel/events/uprobes.c | 20 kernel/exit.c | 11 kernel/fork.c | 15 kernel/futex.c | 4 kernel/locking/lockdep.c | 4 kernel/locking/rtmutex-debug.c | 4 kernel/power/snapshot.c | 1 kernel/relay.c | 2 kernel/sched/core.c | 10 kernel/sched/fair.c | 4 kernel/sys.c | 22 kernel/trace/bpf_trace.c | 176 +- kernel/trace/ftrace.c | 8 kernel/trace/trace_kprobe.c | 80 kernel/trace/trace_output.c | 4 lib/dump_stack.c | 4 lib/ioremap.c | 1 lib/test_hmm.c | 14 lib/test_lockup.c | 16 mm/debug.c | 10 mm/debug_vm_pgtable.c | 1 mm/filemap.c | 46 mm/frame_vector.c | 6 mm/gup.c | 73 mm/hmm.c | 2 mm/huge_memory.c | 8 mm/hugetlb.c | 3 mm/init-mm.c | 6 mm/internal.h | 6 mm/khugepaged.c | 72 mm/ksm.c | 48 mm/maccess.c | 496 +++--- mm/madvise.c | 40 mm/memcontrol.c | 10 mm/memory.c | 61 mm/mempolicy.c | 36 mm/migrate.c | 16 mm/mincore.c | 8 mm/mlock.c | 22 mm/mmap.c | 74 mm/mmu_gather.c | 2 mm/mmu_notifier.c | 22 mm/mprotect.c | 22 mm/mremap.c | 14 mm/msync.c | 8 mm/nommu.c | 22 mm/oom_kill.c | 14 mm/page_io.c | 1 mm/page_reporting.h | 2 mm/pagewalk.c | 12 mm/pgtable-generic.c | 6 mm/process_vm_access.c | 4 mm/ptdump.c | 4 mm/rmap.c | 12 mm/shmem.c | 5 mm/sparse-vmemmap.c | 1 mm/sparse.c | 1 mm/swap_state.c | 5 mm/swapfile.c | 5 mm/userfaultfd.c | 26 mm/util.c | 12 mm/vmacache.c | 1 mm/zsmalloc.c | 4 net/ipv4/tcp.c | 8 net/xdp/xdp_umem.c | 4 security/keys/keyctl.c | 2 sound/core/oss/pcm_oss.c | 2 sound/core/sgbuf.c | 1 sound/pci/hda/hda_intel.c | 4 sound/soc/intel/common/sst-firmware.c | 4 sound/soc/intel/haswell/sst-haswell-pcm.c | 4 tools/include/linux/kallsyms.h | 2 virt/kvm/async_pf.c | 4 virt/kvm/kvm_main.c | 9 942 files changed, 4580 insertions(+), 5662 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-09 4:29 incoming Andrew Morton @ 2020-06-09 16:58 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-06-09 16:58 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Mon, Jun 8, 2020 at 9:29 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > 942 files changed, 4580 insertions(+), 5662 deletions(-) If you use proper tools, add a "-M" to your diff script, so that you see 941 files changed, 2614 insertions(+), 3696 deletions(-) because a big portion of the lines were due to a rename: rename include/{asm-generic => linux}/pgtable.h (91%) but at some earlier point you mentioned "diffstat", so I guess "proper tools" isn't an option ;( Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-08 4:35 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-08 4:35 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm Various trees. Mainly those parts of MM whose linux-next dependents are now merged. I'm still sitting on ~160 patches which await merges from -next. 54 patches, based on 9aa900c8094dba7a60dc805ecec1e9f720744ba1. Subsystems affected by this patch series: mm/proc ipc dynamic-debug panic lib sysctl mm/gup mm/pagemap Subsystem: mm/proc SeongJae Park <sjpark@amazon.de>: mm/page_idle.c: skip offline pages Subsystem: ipc Jules Irenge <jbi.octave@gmail.com>: ipc/msg: add missing annotation for freeque() Giuseppe Scrivano <gscrivan@redhat.com>: ipc/namespace.c: use a work queue to free_ipc Subsystem: dynamic-debug Orson Zhai <orson.zhai@unisoc.com>: dynamic_debug: add an option to enable dynamic debug for modules only Subsystem: panic Rafael Aquini <aquini@redhat.com>: kernel: add panic_on_taint Subsystem: lib Manfred Spraul <manfred@colorfullife.com>: xarray.h: correct return code documentation for xa_store_{bh,irq}() Subsystem: sysctl Vlastimil Babka <vbabka@suse.cz>: Patch series "support setting sysctl parameters from kernel command line", v3: kernel/sysctl: support setting sysctl parameters from kernel command line kernel/sysctl: support handling command line aliases kernel/hung_task convert hung_task_panic boot parameter to sysctl tools/testing/selftests/sysctl/sysctl.sh: support CONFIG_TEST_SYSCTL=y lib/test_sysctl: support testing of sysctl. boot parameter "Guilherme G. Piccoli" <gpiccoli@canonical.com>: kernel/watchdog.c: convert {soft/hard}lockup boot parameters to sysctl aliases kernel/hung_task.c: introduce sysctl to print all traces when a hung task is detected panic: add sysctl to dump all CPUs backtraces on oops event Rafael Aquini <aquini@redhat.com>: kernel/sysctl.c: ignore out-of-range taint bits introduced via kernel.tainted Subsystem: mm/gup Souptick Joarder <jrdr.linux@gmail.com>: mm/gup.c: convert to use get_user_{page|pages}_fast_only() John Hubbard <jhubbard@nvidia.com>: mm/gup: update pin_user_pages.rst for "case 3" (mmu notifiers) Patch series "mm/gup: introduce pin_user_pages_locked(), use it in frame_vector.c", v2: mm/gup: introduce pin_user_pages_locked() mm/gup: frame_vector: convert get_user_pages() --> pin_user_pages() mm/gup: documentation fix for pin_user_pages*() APIs Patch series "vhost, docs: convert to pin_user_pages(), new "case 5"": docs: mm/gup: pin_user_pages.rst: add a "case 5" vhost: convert get_user_pages() --> pin_user_pages() Subsystem: mm/pagemap Alexander Gordeev <agordeev@linux.ibm.com>: mm/mmap.c: add more sanity checks to get_unmapped_area() mm/mmap.c: do not allow mappings outside of allowed limits Christoph Hellwig <hch@lst.de>: Patch series "sort out the flush_icache_range mess", v2: arm: fix the flush_icache_range arguments in set_fiq_handler nds32: unexport flush_icache_page powerpc: unexport flush_icache_user_range unicore32: remove flush_cache_user_range asm-generic: fix the inclusion guards for cacheflush.h asm-generic: don't include <linux/mm.h> in cacheflush.h asm-generic: improve the flush_dcache_page stub alpha: use asm-generic/cacheflush.h arm64: use asm-generic/cacheflush.h c6x: use asm-generic/cacheflush.h hexagon: use asm-generic/cacheflush.h ia64: use asm-generic/cacheflush.h microblaze: use asm-generic/cacheflush.h m68knommu: use asm-generic/cacheflush.h openrisc: use asm-generic/cacheflush.h powerpc: use asm-generic/cacheflush.h riscv: use asm-generic/cacheflush.h arm,sparc,unicore32: remove flush_icache_user_range mm: rename flush_icache_user_range to flush_icache_user_page asm-generic: add a flush_icache_user_range stub sh: implement flush_icache_user_range xtensa: implement flush_icache_user_range arm: rename flush_cache_user_range to flush_icache_user_range m68k: implement flush_icache_user_range exec: only build read_code when needed exec: use flush_icache_user_range in read_code binfmt_flat: use flush_icache_user_range nommu: use flush_icache_user_range in brk and mmap module: move the set_fs hack for flush_icache_range to m68k Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: doc: cgroup: update note about conditions when oom killer is invoked Documentation/admin-guide/cgroup-v2.rst | 17 +- Documentation/admin-guide/dynamic-debug-howto.rst | 5 Documentation/admin-guide/kdump/kdump.rst | 8 + Documentation/admin-guide/kernel-parameters.txt | 34 +++- Documentation/admin-guide/sysctl/kernel.rst | 37 ++++ Documentation/core-api/pin_user_pages.rst | 47 ++++-- arch/alpha/include/asm/cacheflush.h | 38 +---- arch/alpha/kernel/smp.c | 2 arch/arm/include/asm/cacheflush.h | 7 arch/arm/kernel/fiq.c | 4 arch/arm/kernel/traps.c | 2 arch/arm64/include/asm/cacheflush.h | 46 ------ arch/c6x/include/asm/cacheflush.h | 19 -- arch/hexagon/include/asm/cacheflush.h | 19 -- arch/ia64/include/asm/cacheflush.h | 30 ---- arch/m68k/include/asm/cacheflush_mm.h | 6 arch/m68k/include/asm/cacheflush_no.h | 19 -- arch/m68k/mm/cache.c | 13 + arch/microblaze/include/asm/cacheflush.h | 29 --- arch/nds32/include/asm/cacheflush.h | 4 arch/nds32/mm/cacheflush.c | 3 arch/openrisc/include/asm/cacheflush.h | 33 ---- arch/powerpc/include/asm/cacheflush.h | 46 +----- arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 arch/powerpc/kvm/book3s_64_mmu_radix.c | 2 arch/powerpc/mm/mem.c | 3 arch/powerpc/perf/callchain_64.c | 4 arch/riscv/include/asm/cacheflush.h | 65 -------- arch/sh/include/asm/cacheflush.h | 1 arch/sparc/include/asm/cacheflush_32.h | 2 arch/sparc/include/asm/cacheflush_64.h | 1 arch/um/include/asm/tlb.h | 2 arch/unicore32/include/asm/cacheflush.h | 11 - arch/x86/include/asm/cacheflush.h | 2 arch/xtensa/include/asm/cacheflush.h | 2 drivers/media/platform/omap3isp/ispvideo.c | 2 drivers/nvdimm/pmem.c | 3 drivers/vhost/vhost.c | 5 fs/binfmt_flat.c | 2 fs/exec.c | 5 fs/proc/proc_sysctl.c | 163 ++++++++++++++++++++-- include/asm-generic/cacheflush.h | 25 +-- include/linux/dev_printk.h | 6 include/linux/dynamic_debug.h | 2 include/linux/ipc_namespace.h | 2 include/linux/kernel.h | 9 + include/linux/mm.h | 12 + include/linux/net.h | 3 include/linux/netdevice.h | 6 include/linux/printk.h | 9 - include/linux/sched/sysctl.h | 7 include/linux/sysctl.h | 4 include/linux/xarray.h | 4 include/rdma/ib_verbs.h | 6 init/main.c | 2 ipc/msg.c | 2 ipc/namespace.c | 24 ++- kernel/events/core.c | 4 kernel/events/uprobes.c | 2 kernel/hung_task.c | 30 ++-- kernel/module.c | 8 - kernel/panic.c | 45 ++++++ kernel/sysctl.c | 38 ++++- kernel/watchdog.c | 37 +--- lib/Kconfig.debug | 12 + lib/Makefile | 2 lib/dynamic_debug.c | 9 - lib/test_sysctl.c | 13 + mm/frame_vector.c | 7 mm/gup.c | 74 +++++++-- mm/mmap.c | 28 ++- mm/nommu.c | 4 mm/page_alloc.c | 9 - mm/page_idle.c | 7 tools/testing/selftests/sysctl/sysctl.sh | 44 +++++ virt/kvm/kvm_main.c | 8 - 76 files changed, 732 insertions(+), 517 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-04 23:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-04 23:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits - More MM work. 100ish more to go. Mike's "mm: remove __ARCH_HAS_5LEVEL_HACK" series should fix the current ppc issue. - Various other little subsystems 127 patches, based on 6929f71e46bdddbf1c4d67c2728648176c67c555. Subsystems affected by this patch series: kcov mm/pagemap mm/vmalloc mm/kmap mm/util mm/memory-hotplug mm/cleanups mm/zram procfs core-kernel get_maintainer lib bitops checkpatch binfmt init fat seq_file exec rapidio relay selftests ubsan Subsystem: kcov Andrey Konovalov <andreyknvl@google.com>: Patch series "kcov: collect coverage from usb soft interrupts", v4: kcov: cleanup debug messages kcov: fix potential use-after-free in kcov_remote_start kcov: move t->kcov assignments into kcov_start/stop kcov: move t->kcov_sequence assignment kcov: use t->kcov_mode as enabled indicator kcov: collect coverage from interrupts usb: core: kcov: collect coverage from usb complete callback Subsystem: mm/pagemap Feng Tang <feng.tang@intel.com>: mm/util.c: remove the VM_WARN_ONCE for vm_committed_as underflow check Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: remove __ARCH_HAS_5LEVEL_HACK", v4: h8300: remove usage of __ARCH_USE_5LEVEL_HACK arm: add support for folded p4d page tables arm64: add support for folded p4d page tables hexagon: remove __ARCH_USE_5LEVEL_HACK ia64: add support for folded p4d page tables nios2: add support for folded p4d page tables openrisc: add support for folded p4d page tables powerpc: add support for folded p4d page tables Geert Uytterhoeven <geert+renesas@glider.be>: sh: fault: modernize printing of kernel messages Mike Rapoport <rppt@linux.ibm.com>: sh: drop __pXd_offset() macros that duplicate pXd_index() ones sh: add support for folded p4d page tables unicore32: remove __ARCH_USE_5LEVEL_HACK asm-generic: remove pgtable-nop4d-hack.h mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/debug: Add tests validating architecture page table: x86/mm: define mm_p4d_folded() mm/debug: add tests validating architecture page table helpers Subsystem: mm/vmalloc Jeongtae Park <jtp.park@samsung.com>: mm/vmalloc: fix a typo in comment Subsystem: mm/kmap Ira Weiny <ira.weiny@intel.com>: Patch series "Remove duplicated kmap code", v3: arch/kmap: remove BUG_ON() arch/xtensa: move kmap build bug out of the way arch/kmap: remove redundant arch specific kmaps arch/kunmap: remove duplicate kunmap implementations {x86,powerpc,microblaze}/kmap: move preempt disable arch/kmap_atomic: consolidate duplicate code arch/kunmap_atomic: consolidate duplicate code arch/kmap: ensure kmap_prot visibility arch/kmap: don't hard code kmap_prot values arch/kmap: define kmap_atomic_prot() for all arch's drm: remove drm specific kmap_atomic code kmap: remove kmap_atomic_to_page() parisc/kmap: remove duplicate kmap code sparc: remove unnecessary includes kmap: consolidate kmap_prot definitions Subsystem: mm/util Waiman Long <longman@redhat.com>: mm: add kvfree_sensitive() for freeing sensitive data objects Subsystem: mm/memory-hotplug Vishal Verma <vishal.l.verma@intel.com>: mm/memory_hotplug: refrain from adding memory into an impossible node David Hildenbrand <david@redhat.com>: powerpc/pseries/hotplug-memory: stop checking is_mem_section_removable() mm/memory_hotplug: remove is_mem_section_removable() Patch series "mm/memory_hotplug: handle memblocks only with: mm/memory_hotplug: set node_start_pfn of hotadded pgdat to 0 mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK Patch series "mm/memory_hotplug: Interface to add driver-managed system: mm/memory_hotplug: introduce add_memory_driver_managed() kexec_file: don't place kexec images on IORESOURCE_MEM_DRIVER_MANAGED device-dax: add memory via add_memory_driver_managed() Michal Hocko <mhocko@kernel.org>: mm/memory_hotplug: disable the functionality for 32b Subsystem: mm/cleanups chenqiwu <chenqiwu@xiaomi.com>: mm: replace zero-length array with flexible-array member Ethon Paul <ethp@qq.com>: mm/memory_hotplug: fix a typo in comment "recoreded"->"recorded" mm: ksm: fix a typo in comment "alreaady"->"already" mm: mmap: fix a typo in comment "compatbility"->"compatibility" mm/hugetlb: fix a typos in comments mm/vmsan: fix some typos in comment mm/compaction: fix a typo in comment "pessemistic"->"pessimistic" mm/memblock: fix a typo in comment "implict"->"implicit" mm/list_lru: fix a typo in comment "numbesr"->"numbers" mm/filemap: fix a typo in comment "unneccssary"->"unnecessary" mm/frontswap: fix some typos in frontswap.c mm, memcg: fix some typos in memcontrol.c mm: fix a typo in comment "strucure"->"structure" mm/slub: fix a typo in comment "disambiguiation"->"disambiguation" mm/sparse: fix a typo in comment "convienence"->"convenience" mm/page-writeback: fix a typo in comment "effictive"->"effective" mm/memory: fix a typo in comment "attampt"->"attempt" Zou Wei <zou_wei@huawei.com>: mm: use false for bool variable Jason Yan <yanaijie@huawei.com>: include/linux/mm.h: return true in cpupid_pid_unset() Subsystem: mm/zram Andy Shevchenko <andriy.shevchenko@linux.intel.com>: zcomp: Use ARRAY_SIZE() for backends list Subsystem: procfs Alexey Dobriyan <adobriyan@gmail.com>: proc: rename "catch" function argument Subsystem: core-kernel Jason Yan <yanaijie@huawei.com>: user.c: make uidhash_table static Subsystem: get_maintainer Joe Perches <joe@perches.com>: get_maintainer: add email addresses from .yaml files get_maintainer: fix unexpected behavior for path/to//file (double slashes) Subsystem: lib Christophe JAILLET <christophe.jaillet@wanadoo.fr>: lib/math: avoid trailing newline hidden in pr_fmt() KP Singh <kpsingh@chromium.org>: lib: Add might_fault() to strncpy_from_user. Jason Yan <yanaijie@huawei.com>: lib/test_lockup.c: make test_inode static Jann Horn <jannh@google.com>: lib/zlib: remove outdated and incorrect pre-increment optimization Joe Perches <joe@perches.com>: lib/percpu-refcount.c: use a more common logging style Tan Hu <tan.hu@zte.com.cn>: lib/flex_proportions.c: cleanup __fprop_inc_percpu_max Jesse Brandeburg <jesse.brandeburg@intel.com>: lib: make a test module with set/clear bit Subsystem: bitops Arnd Bergmann <arnd@arndb.de>: include/linux/bitops.h: avoid clang shift-count-overflow warnings Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: additional MAINTAINER section entry ordering checks checkpatch: look for c99 comments in ctx_locate_comment checkpatch: disallow --git and --file/--fix Geert Uytterhoeven <geert+renesas@glider.be>: checkpatch: use patch subject when reading from stdin Subsystem: binfmt Anthony Iliopoulos <ailiop@suse.com>: fs/binfmt_elf: remove redundant elf_map ifndef Nick Desaulniers <ndesaulniers@google.com>: elfnote: mark all .note sections SHF_ALLOC Subsystem: init Chris Down <chris@chrisdown.name>: init: allow distribution configuration of default init Subsystem: fat OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>: fat: don't allow to mount if the FAT length == 0 fat: improve the readahead for FAT entries Subsystem: seq_file Joe Perches <joe@perches.com>: fs/seq_file.c: seq_read: Update pr_info_ratelimited Kefeng Wang <wangkefeng.wang@huawei.com>: Patch series "seq_file: Introduce DEFINE_SEQ_ATTRIBUTE() helper macro": include/linux/seq_file.h: introduce DEFINE_SEQ_ATTRIBUTE() helper macro mm/vmstat.c: convert to use DEFINE_SEQ_ATTRIBUTE macro kernel/kprobes.c: convert to use DEFINE_SEQ_ATTRIBUTE macro Subsystem: exec Christoph Hellwig <hch@lst.de>: exec: simplify the copy_strings_kernel calling convention exec: open code copy_string_kernel Subsystem: rapidio Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>: rapidio: avoid data race between file operation callbacks and mport_cdev_add(). John Hubbard <jhubbard@nvidia.com>: rapidio: convert get_user_pages() --> pin_user_pages() Subsystem: relay Daniel Axtens <dja@axtens.net>: kernel/relay.c: handle alloc_percpu returning NULL in relay_open Pengcheng Yang <yangpc@wangsu.com>: kernel/relay.c: fix read_pos error when multiple readers Subsystem: selftests Ram Pai <linuxram@us.ibm.com>: Patch series "selftests, powerpc, x86: Memory Protection Keys", v19: selftests/x86/pkeys: move selftests to arch-neutral directory selftests/vm/pkeys: rename all references to pkru to a generic name selftests/vm/pkeys: move generic definitions to header file Thiago Jung Bauermann <bauerman@linux.ibm.com>: selftests/vm/pkeys: move some definitions to arch-specific header selftests/vm/pkeys: make gcc check arguments of sigsafe_printf() Sandipan Das <sandipan@linux.ibm.com>: selftests: vm: pkeys: Use sane types for pkey register selftests: vm: pkeys: add helpers for pkey bits Ram Pai <linuxram@us.ibm.com>: selftests/vm/pkeys: fix pkey_disable_clear() selftests/vm/pkeys: fix assertion in pkey_disable_set/clear() selftests/vm/pkeys: fix alloc_random_pkey() to make it really random Sandipan Das <sandipan@linux.ibm.com>: selftests: vm: pkeys: use the correct huge page size Ram Pai <linuxram@us.ibm.com>: selftests/vm/pkeys: introduce generic pkey abstractions selftests/vm/pkeys: introduce powerpc support "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>: selftests/vm/pkeys: fix number of reserved powerpc pkeys Ram Pai <linuxram@us.ibm.com>: selftests/vm/pkeys: fix assertion in test_pkey_alloc_exhaust() selftests/vm/pkeys: improve checks to determine pkey support selftests/vm/pkeys: associate key on a mapped page and detect access violation selftests/vm/pkeys: associate key on a mapped page and detect write violation selftests/vm/pkeys: detect write violation on a mapped access-denied-key page selftests/vm/pkeys: introduce a sub-page allocator selftests/vm/pkeys: test correct behaviour of pkey-0 selftests/vm/pkeys: override access right definitions on powerpc Sandipan Das <sandipan@linux.ibm.com>: selftests: vm: pkeys: use the correct page size on powerpc selftests: vm: pkeys: fix multilib builds for x86 Jagadeesh Pagadala <jagdsh.linux@gmail.com>: tools/testing/selftests/vm: remove duplicate headers Subsystem: ubsan Arnd Bergmann <arnd@arndb.de>: lib/ubsan.c: fix gcc-10 warnings Documentation/dev-tools/kcov.rst | 17 Documentation/features/debug/debug-vm-pgtable/arch-support.txt | 34 arch/arc/Kconfig | 1 arch/arc/include/asm/highmem.h | 20 arch/arc/mm/highmem.c | 34 arch/arm/include/asm/highmem.h | 9 arch/arm/include/asm/pgtable.h | 1 arch/arm/lib/uaccess_with_memcpy.c | 7 arch/arm/mach-sa1100/assabet.c | 2 arch/arm/mm/dump.c | 29 arch/arm/mm/fault-armv.c | 7 arch/arm/mm/fault.c | 22 arch/arm/mm/highmem.c | 41 arch/arm/mm/idmap.c | 3 arch/arm/mm/init.c | 2 arch/arm/mm/ioremap.c | 12 arch/arm/mm/mm.h | 2 arch/arm/mm/mmu.c | 35 arch/arm/mm/pgd.c | 40 arch/arm64/Kconfig | 1 arch/arm64/include/asm/kvm_mmu.h | 10 arch/arm64/include/asm/pgalloc.h | 10 arch/arm64/include/asm/pgtable-types.h | 5 arch/arm64/include/asm/pgtable.h | 37 arch/arm64/include/asm/stage2_pgtable.h | 48 arch/arm64/kernel/hibernate.c | 44 arch/arm64/kvm/mmu.c | 209 arch/arm64/mm/fault.c | 9 arch/arm64/mm/hugetlbpage.c | 15 arch/arm64/mm/kasan_init.c | 26 arch/arm64/mm/mmu.c | 52 arch/arm64/mm/pageattr.c | 7 arch/csky/include/asm/highmem.h | 12 arch/csky/mm/highmem.c | 64 arch/h8300/include/asm/pgtable.h | 1 arch/hexagon/include/asm/fixmap.h | 4 arch/hexagon/include/asm/pgtable.h | 1 arch/ia64/include/asm/pgalloc.h | 4 arch/ia64/include/asm/pgtable.h | 17 arch/ia64/mm/fault.c | 7 arch/ia64/mm/hugetlbpage.c | 18 arch/ia64/mm/init.c | 28 arch/microblaze/include/asm/highmem.h | 55 arch/microblaze/mm/highmem.c | 21 arch/microblaze/mm/init.c | 3 arch/mips/include/asm/highmem.h | 11 arch/mips/mm/cache.c | 6 arch/mips/mm/highmem.c | 62 arch/nds32/include/asm/highmem.h | 9 arch/nds32/mm/highmem.c | 49 arch/nios2/include/asm/pgtable.h | 3 arch/nios2/mm/fault.c | 9 arch/nios2/mm/ioremap.c | 6 arch/openrisc/include/asm/pgtable.h | 1 arch/openrisc/mm/fault.c | 10 arch/openrisc/mm/init.c | 4 arch/parisc/include/asm/cacheflush.h | 32 arch/powerpc/Kconfig | 1 arch/powerpc/include/asm/book3s/32/pgtable.h | 1 arch/powerpc/include/asm/book3s/64/hash.h | 4 arch/powerpc/include/asm/book3s/64/pgalloc.h | 4 arch/powerpc/include/asm/book3s/64/pgtable.h | 60 arch/powerpc/include/asm/book3s/64/radix.h | 6 arch/powerpc/include/asm/highmem.h | 56 arch/powerpc/include/asm/nohash/32/pgtable.h | 1 arch/powerpc/include/asm/nohash/64/pgalloc.h | 2 arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 32 arch/powerpc/include/asm/nohash/64/pgtable.h | 6 arch/powerpc/include/asm/pgtable.h | 10 arch/powerpc/kvm/book3s_64_mmu_radix.c | 32 arch/powerpc/lib/code-patching.c | 7 arch/powerpc/mm/book3s64/hash_pgtable.c | 4 arch/powerpc/mm/book3s64/radix_pgtable.c | 26 arch/powerpc/mm/book3s64/subpage_prot.c | 6 arch/powerpc/mm/highmem.c | 26 arch/powerpc/mm/hugetlbpage.c | 28 arch/powerpc/mm/kasan/kasan_init_32.c | 2 arch/powerpc/mm/mem.c | 3 arch/powerpc/mm/nohash/book3e_pgtable.c | 15 arch/powerpc/mm/pgtable.c | 30 arch/powerpc/mm/pgtable_64.c | 10 arch/powerpc/mm/ptdump/hashpagetable.c | 20 arch/powerpc/mm/ptdump/ptdump.c | 12 arch/powerpc/platforms/pseries/hotplug-memory.c | 26 arch/powerpc/xmon/xmon.c | 27 arch/s390/Kconfig | 1 arch/sh/include/asm/pgtable-2level.h | 1 arch/sh/include/asm/pgtable-3level.h | 1 arch/sh/include/asm/pgtable_32.h | 5 arch/sh/include/asm/pgtable_64.h | 5 arch/sh/kernel/io_trapped.c | 7 arch/sh/mm/cache-sh4.c | 4 arch/sh/mm/cache-sh5.c | 7 arch/sh/mm/fault.c | 64 arch/sh/mm/hugetlbpage.c | 28 arch/sh/mm/init.c | 15 arch/sh/mm/kmap.c | 2 arch/sh/mm/tlbex_32.c | 6 arch/sh/mm/tlbex_64.c | 7 arch/sparc/include/asm/highmem.h | 29 arch/sparc/mm/highmem.c | 31 arch/sparc/mm/io-unit.c | 1 arch/sparc/mm/iommu.c | 1 arch/unicore32/include/asm/pgtable.h | 1 arch/unicore32/kernel/hibernate.c | 4 arch/x86/Kconfig | 1 arch/x86/include/asm/fixmap.h | 1 arch/x86/include/asm/highmem.h | 37 arch/x86/include/asm/pgtable_64.h | 6 arch/x86/mm/highmem_32.c | 52 arch/xtensa/include/asm/highmem.h | 31 arch/xtensa/mm/highmem.c | 28 drivers/block/zram/zcomp.c | 7 drivers/dax/dax-private.h | 1 drivers/dax/kmem.c | 28 drivers/gpu/drm/ttm/ttm_bo_util.c | 56 drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 17 drivers/rapidio/devices/rio_mport_cdev.c | 27 drivers/usb/core/hcd.c | 3 fs/binfmt_elf.c | 4 fs/binfmt_em86.c | 6 fs/binfmt_misc.c | 4 fs/binfmt_script.c | 6 fs/exec.c | 58 fs/fat/fatent.c | 103 fs/fat/inode.c | 6 fs/proc/array.c | 8 fs/seq_file.c | 7 include/asm-generic/5level-fixup.h | 59 include/asm-generic/pgtable-nop4d-hack.h | 64 include/asm-generic/pgtable-nopud.h | 4 include/drm/ttm/ttm_bo_api.h | 4 include/linux/binfmts.h | 3 include/linux/bitops.h | 2 include/linux/elfnote.h | 2 include/linux/highmem.h | 89 include/linux/ioport.h | 1 include/linux/memory_hotplug.h | 9 include/linux/mm.h | 12 include/linux/sched.h | 3 include/linux/seq_file.h | 19 init/Kconfig | 10 init/main.c | 10 kernel/kcov.c | 282 - kernel/kexec_file.c | 5 kernel/kprobes.c | 34 kernel/relay.c | 22 kernel/user.c | 2 lib/Kconfig.debug | 44 lib/Makefile | 2 lib/flex_proportions.c | 7 lib/math/prime_numbers.c | 10 lib/percpu-refcount.c | 6 lib/strncpy_from_user.c | 1 lib/test_bitops.c | 60 lib/test_lockup.c | 2 lib/ubsan.c | 33 lib/zlib_inflate/inffast.c | 91 mm/Kconfig | 4 mm/Makefile | 1 mm/compaction.c | 2 mm/debug_vm_pgtable.c | 382 + mm/filemap.c | 2 mm/frontswap.c | 6 mm/huge_memory.c | 2 mm/hugetlb.c | 16 mm/internal.h | 2 mm/kasan/init.c | 11 mm/ksm.c | 10 mm/list_lru.c | 2 mm/memblock.c | 2 mm/memcontrol.c | 4 mm/memory.c | 10 mm/memory_hotplug.c | 179 mm/mmap.c | 2 mm/mremap.c | 2 mm/page-writeback.c | 2 mm/slub.c | 2 mm/sparse.c | 2 mm/util.c | 22 mm/vmalloc.c | 2 mm/vmscan.c | 6 mm/vmstat.c | 32 mm/zbud.c | 2 scripts/checkpatch.pl | 62 scripts/get_maintainer.pl | 46 security/keys/internal.h | 11 security/keys/keyctl.c | 16 tools/testing/selftests/lib/config | 1 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 75 tools/testing/selftests/vm/mremap_dontunmap.c | 1 tools/testing/selftests/vm/pkey-helpers.h | 557 +- tools/testing/selftests/vm/pkey-powerpc.h | 153 tools/testing/selftests/vm/pkey-x86.h | 191 tools/testing/selftests/vm/protection_keys.c | 2370 ++++++++-- tools/testing/selftests/x86/.gitignore | 1 tools/testing/selftests/x86/Makefile | 2 tools/testing/selftests/x86/pkey-helpers.h | 219 tools/testing/selftests/x86/protection_keys.c | 1506 ------ 200 files changed, 5182 insertions(+), 4033 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-03 22:55 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-03 22:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm More mm/ work, plenty more to come. 131 patches, based on d6f9469a03d832dcd17041ed67774ffb5f3e73b3. Subsystems affected by this patch series: mm/slub mm/memcg mm/gup mm/kasan mm/pagealloc mm/hugetlb mm/vmscan mm/tools mm/mempolicy mm/memblock mm/hugetlbfs mm/thp mm/mmap mm/kconfig Subsystem: mm/slub Wang Hai <wanghai38@huawei.com>: mm/slub: fix a memory leak in sysfs_slab_add() Subsystem: mm/memcg Shakeel Butt <shakeelb@google.com>: mm/memcg: optimize memory.numa_stat like memory.stat Subsystem: mm/gup John Hubbard <jhubbard@nvidia.com>: Patch series "mm/gup, drm/i915: refactor gup_fast, convert to pin_user_pages()", v2: mm/gup: move __get_user_pages_fast() down a few lines in gup.c mm/gup: refactor and de-duplicate gup_fast() code mm/gup: introduce pin_user_pages_fast_only() drm/i915: convert get_user_pages() --> pin_user_pages() mm/gup: might_lock_read(mmap_sem) in get_user_pages_fast() Subsystem: mm/kasan Daniel Axtens <dja@axtens.net>: Patch series "Fix some incompatibilites between KASAN and FORTIFY_SOURCE", v4: kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE string.h: fix incompatibility between FORTIFY_SOURCE and KASAN Subsystem: mm/pagealloc Michal Hocko <mhocko@suse.com>: mm: clarify __GFP_MEMALLOC usage Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: rework free_area_init*() funcitons": mm: memblock: replace dereferences of memblock_region.nid with API calls mm: make early_pfn_to_nid() and related defintions close to each other mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP option mm: free_area_init: use maximal zone PFNs rather than zone sizes mm: use free_area_init() instead of free_area_init_nodes() alpha: simplify detection of memory zone boundaries arm: simplify detection of memory zone boundaries arm64: simplify detection of memory zone boundaries for UMA configs csky: simplify detection of memory zone boundaries m68k: mm: simplify detection of memory zone boundaries parisc: simplify detection of memory zone boundaries sparc32: simplify detection of memory zone boundaries unicore32: simplify detection of memory zone boundaries xtensa: simplify detection of memory zone boundaries Baoquan He <bhe@redhat.com>: mm: memmap_init: iterate over memblock regions rather that check each PFN Mike Rapoport <rppt@linux.ibm.com>: mm: remove early_pfn_in_nid() and CONFIG_NODES_SPAN_OTHER_NODES mm: free_area_init: allow defining max_zone_pfn in descending order mm: rename free_area_init_node() to free_area_init_memoryless_node() mm: clean up free_area_init_node() and its helpers mm: simplify find_min_pfn_with_active_regions() docs/vm: update memory-models documentation Wei Yang <richard.weiyang@gmail.com>: Patch series "mm/page_alloc.c: cleanup on check page", v3: mm/page_alloc.c: bad_[reason|flags] is not necessary when PageHWPoison mm/page_alloc.c: bad_flags is not necessary for bad_page() mm/page_alloc.c: rename free_pages_check_bad() to check_free_page_bad() mm/page_alloc.c: rename free_pages_check() to check_free_page() mm/page_alloc.c: extract check_[new|free]_page_bad() common part to page_bad_reason() Roman Gushchin <guro@fb.com>: mm,page_alloc,cma: conditionally prefer cma pageblocks for movable allocations Baoquan He <bhe@redhat.com>: mm/page_alloc.c: remove unused free_bootmem_with_active_regions Patch series "improvements about lowmem_reserve and /proc/zoneinfo", v2: mm/page_alloc.c: only tune sysctl_lowmem_reserve_ratio value once when changing it mm/page_alloc.c: clear out zone->lowmem_reserve[] if the zone is empty mm/vmstat.c: do not show lowmem reserve protection information of empty zone Joonsoo Kim <iamjoonsoo.kim@lge.com>: Patch series "integrate classzone_idx and high_zoneidx", v5: mm/page_alloc: use ac->high_zoneidx for classzone_idx mm/page_alloc: integrate classzone_idx and high_zoneidx Wei Yang <richard.weiyang@gmail.com>: mm/page_alloc.c: use NODE_MASK_NONE in build_zonelists() mm: rename gfpflags_to_migratetype to gfp_migratetype for same convention Sandipan Das <sandipan@linux.ibm.com>: mm/page_alloc.c: reset numa stats for boot pagesets Charan Teja Reddy <charante@codeaurora.org>: mm, page_alloc: reset the zone->watermark_boost early Anshuman Khandual <anshuman.khandual@arm.com>: mm/page_alloc: restrict and formalize compound_page_dtors[] Daniel Jordan <daniel.m.jordan@oracle.com>: Patch series "initialize deferred pages with interrupts enabled", v4: mm/pagealloc.c: call touch_nmi_watchdog() on max order boundaries in deferred init Pavel Tatashin <pasha.tatashin@soleen.com>: mm: initialize deferred pages with interrupts enabled mm: call cond_resched() from deferred_init_memmap() Daniel Jordan <daniel.m.jordan@oracle.com>: Patch series "padata: parallelize deferred page init", v3: padata: remove exit routine padata: initialize earlier padata: allocate work structures for parallel jobs from a pool padata: add basic support for multithreaded jobs mm: don't track number of pages during deferred initialization mm: parallelize deferred_init_memmap() mm: make deferred init's max threads arch-specific padata: document multithreaded jobs Chen Tao <chentao107@huawei.com>: mm/page_alloc.c: add missing newline Subsystem: mm/hugetlb "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: Patch series "thp/khugepaged improvements and CoW semantics", v4: khugepaged: add self test khugepaged: do not stop collapse if less than half PTEs are referenced khugepaged: drain all LRU caches before scanning pages khugepaged: drain LRU add pagevec after swapin khugepaged: allow to collapse a page shared across fork khugepaged: allow to collapse PTE-mapped compound pages thp: change CoW semantics for anon-THP khugepaged: introduce 'max_ptes_shared' tunable Mike Kravetz <mike.kravetz@oracle.com>: Patch series "Clean up hugetlb boot command line processing", v4: hugetlbfs: add arch_hugetlb_valid_size hugetlbfs: move hugepagesz= parsing to arch independent code hugetlbfs: remove hugetlb_add_hstate() warning for existing hstate hugetlbfs: clean up command line processing hugetlbfs: fix changes to command line processing Li Xinhai <lixinhai.lxh@gmail.com>: mm/hugetlb: avoid unnecessary check on pud and pmd entry in huge_pte_offset Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/hugetlb: Add some new generic fallbacks", v3: arm64/mm: drop __HAVE_ARCH_HUGE_PTEP_GET mm/hugetlb: define a generic fallback for is_hugepage_only_range() mm/hugetlb: define a generic fallback for arch_clear_hugepage_flags() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: simplify calling a compound page destructor Subsystem: mm/vmscan Wei Yang <richard.weiyang@gmail.com>: mm/vmscan.c: use update_lru_size() in update_lru_sizes() Jaewon Kim <jaewon31.kim@samsung.com>: mm/vmscan: count layzfree pages and fix nr_isolated_* mismatch Maninder Singh <maninder1.s@samsung.com>: mm/vmscan.c: change prototype for shrink_page_list Qiwu Chen <qiwuchen55@gmail.com>: mm/vmscan: update the comment of should_continue_reclaim() Johannes Weiner <hannes@cmpxchg.org>: Patch series "mm: memcontrol: charge swapin pages on instantiation", v2: mm: fix NUMA node file count error in replace_page_cache() mm: memcontrol: fix stat-corrupting race in charge moving mm: memcontrol: drop @compound parameter from memcg charging API mm: shmem: remove rare optimization when swapin races with hole punching mm: memcontrol: move out cgroup swaprate throttling mm: memcontrol: convert page cache to a new mem_cgroup_charge() API mm: memcontrol: prepare uncharging for removal of private page type counters mm: memcontrol: prepare move_account for removal of private page type counters mm: memcontrol: prepare cgroup vmstat infrastructure for native anon counters mm: memcontrol: switch to native NR_FILE_PAGES and NR_SHMEM counters mm: memcontrol: switch to native NR_ANON_MAPPED counter mm: memcontrol: switch to native NR_ANON_THPS counter mm: memcontrol: convert anon and file-thp to new mem_cgroup_charge() API mm: memcontrol: drop unused try/commit/cancel charge API mm: memcontrol: prepare swap controller setup for integration mm: memcontrol: make swap tracking an integral part of memory control mm: memcontrol: charge swapin pages on instantiation Alex Shi <alex.shi@linux.alibaba.com>: mm: memcontrol: document the new swap control behavior Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: delete unused lrucare handling mm: memcontrol: update page->mem_cgroup stability rules mm: fix LRU balancing effect of new transparent huge pages mm: keep separate anon and file statistics on page reclaim activity mm: allow swappiness that prefers reclaiming anon over the file workingset mm: fold and remove lru_cache_add_anon() and lru_cache_add_file() mm: workingset: let cache workingset challenge anon mm: remove use-once cache bias from LRU balancing mm: vmscan: drop unnecessary div0 avoidance rounding in get_scan_count() mm: base LRU balancing on an explicit cost model mm: deactivations shouldn't bias the LRU balance mm: only count actual rotations as LRU reclaim cost mm: balance LRU lists based on relative thrashing mm: vmscan: determine anon/file pressure balance at the reclaim root mm: vmscan: reclaim writepage is IO cost mm: vmscan: limit the range of LRU type balancing Shakeel Butt <shakeelb@google.com>: mm: swap: fix vmstats for huge pages mm: swap: memcg: fix memcg stats for huge pages Subsystem: mm/tools Changhee Han <ch0.han@lge.com>: tools/vm/page_owner_sort.c: filter out unneeded line Subsystem: mm/mempolicy Michal Hocko <mhocko@suse.com>: mm, mempolicy: fix up gup usage in lookup_node Subsystem: mm/memblock chenqiwu <chenqiwu@xiaomi.com>: include/linux/memblock.h: fix minor typo and unclear comment Mike Rapoport <rppt@linux.ibm.com>: sparc32: register memory occupied by kernel as memblock.memory Subsystem: mm/hugetlbfs Shijie Hu <hushijie3@huawei.com>: hugetlbfs: get unmapped area below TASK_UNMAPPED_BASE for hugetlbfs Subsystem: mm/thp Yang Shi <yang.shi@linux.alibaba.com>: mm: thp: don't need to drain lru cache when splitting and mlocking THP Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/thp: Rename pmd_mknotpresent() as pmd_mknotvalid()", v2: powerpc/mm: drop platform defined pmd_mknotpresent() mm/thp: rename pmd_mknotpresent() as pmd_mkinvalid() Subsystem: mm/mmap Scott Cheloha <cheloha@linux.vnet.ibm.com>: drivers/base/memory.c: cache memory blocks in xarray to accelerate lookup Subsystem: mm/kconfig Zong Li <zong.li@sifive.com>: Patch series "Extract DEBUG_WX to shared use": mm: add DEBUG_WX support riscv: support DEBUG_WX x86: mm: use ARCH_HAS_DEBUG_WX instead of arch defined arm64: mm: use ARCH_HAS_DEBUG_WX instead of arch defined Documentation/admin-guide/cgroup-v1/memory.rst | 19 Documentation/admin-guide/kernel-parameters.txt | 40 Documentation/admin-guide/mm/hugetlbpage.rst | 35 Documentation/admin-guide/mm/transhuge.rst | 7 Documentation/admin-guide/sysctl/vm.rst | 23 Documentation/core-api/padata.rst | 41 Documentation/features/vm/numa-memblock/arch-support.txt | 34 Documentation/vm/memory-model.rst | 9 Documentation/vm/page_owner.rst | 3 arch/alpha/mm/init.c | 16 arch/alpha/mm/numa.c | 22 arch/arc/include/asm/hugepage.h | 2 arch/arc/mm/init.c | 41 arch/arm/include/asm/hugetlb.h | 7 arch/arm/include/asm/pgtable-3level.h | 2 arch/arm/mm/init.c | 66 arch/arm64/Kconfig | 2 arch/arm64/Kconfig.debug | 29 arch/arm64/include/asm/hugetlb.h | 13 arch/arm64/include/asm/pgtable.h | 2 arch/arm64/mm/hugetlbpage.c | 48 arch/arm64/mm/init.c | 56 arch/arm64/mm/numa.c | 9 arch/c6x/mm/init.c | 8 arch/csky/kernel/setup.c | 26 arch/h8300/mm/init.c | 6 arch/hexagon/mm/init.c | 6 arch/ia64/Kconfig | 1 arch/ia64/include/asm/hugetlb.h | 5 arch/ia64/mm/contig.c | 2 arch/ia64/mm/discontig.c | 2 arch/m68k/mm/init.c | 6 arch/m68k/mm/mcfmmu.c | 9 arch/m68k/mm/motorola.c | 15 arch/m68k/mm/sun3mmu.c | 10 arch/microblaze/Kconfig | 1 arch/microblaze/mm/init.c | 2 arch/mips/Kconfig | 1 arch/mips/include/asm/hugetlb.h | 11 arch/mips/include/asm/pgtable.h | 2 arch/mips/loongson64/numa.c | 2 arch/mips/mm/init.c | 2 arch/mips/sgi-ip27/ip27-memory.c | 2 arch/nds32/mm/init.c | 11 arch/nios2/mm/init.c | 8 arch/openrisc/mm/init.c | 9 arch/parisc/include/asm/hugetlb.h | 10 arch/parisc/mm/init.c | 22 arch/powerpc/Kconfig | 10 arch/powerpc/include/asm/book3s/64/pgtable.h | 4 arch/powerpc/include/asm/hugetlb.h | 5 arch/powerpc/mm/hugetlbpage.c | 38 arch/powerpc/mm/mem.c | 2 arch/riscv/Kconfig | 2 arch/riscv/include/asm/hugetlb.h | 10 arch/riscv/include/asm/ptdump.h | 11 arch/riscv/mm/hugetlbpage.c | 44 arch/riscv/mm/init.c | 5 arch/s390/Kconfig | 1 arch/s390/include/asm/hugetlb.h | 8 arch/s390/mm/hugetlbpage.c | 34 arch/s390/mm/init.c | 2 arch/sh/Kconfig | 1 arch/sh/include/asm/hugetlb.h | 7 arch/sh/mm/init.c | 2 arch/sparc/Kconfig | 10 arch/sparc/include/asm/hugetlb.h | 10 arch/sparc/mm/init_32.c | 1 arch/sparc/mm/init_64.c | 67 arch/sparc/mm/srmmu.c | 21 arch/um/kernel/mem.c | 12 arch/unicore32/include/asm/memory.h | 2 arch/unicore32/include/mach/memory.h | 6 arch/unicore32/kernel/pci.c | 14 arch/unicore32/mm/init.c | 43 arch/x86/Kconfig | 11 arch/x86/Kconfig.debug | 27 arch/x86/include/asm/hugetlb.h | 10 arch/x86/include/asm/pgtable.h | 2 arch/x86/mm/hugetlbpage.c | 35 arch/x86/mm/init.c | 2 arch/x86/mm/init_64.c | 12 arch/x86/mm/kmmio.c | 2 arch/x86/mm/numa.c | 11 arch/xtensa/mm/init.c | 8 drivers/base/memory.c | 44 drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 22 fs/cifs/file.c | 10 fs/fuse/dev.c | 2 fs/hugetlbfs/inode.c | 67 include/asm-generic/hugetlb.h | 2 include/linux/compaction.h | 9 include/linux/gfp.h | 7 include/linux/hugetlb.h | 16 include/linux/memblock.h | 15 include/linux/memcontrol.h | 102 - include/linux/mm.h | 52 include/linux/mmzone.h | 46 include/linux/padata.h | 43 include/linux/string.h | 60 include/linux/swap.h | 17 include/linux/vm_event_item.h | 4 include/linux/vmstat.h | 2 include/trace/events/compaction.h | 22 include/trace/events/huge_memory.h | 3 include/trace/events/vmscan.h | 14 init/Kconfig | 17 init/main.c | 2 kernel/events/uprobes.c | 22 kernel/padata.c | 293 +++- kernel/sysctl.c | 3 lib/test_kasan.c | 29 mm/Kconfig | 9 mm/Kconfig.debug | 32 mm/compaction.c | 70 - mm/filemap.c | 55 mm/gup.c | 237 ++- mm/huge_memory.c | 282 ---- mm/hugetlb.c | 260 ++- mm/internal.h | 25 mm/khugepaged.c | 316 ++-- mm/memblock.c | 19 mm/memcontrol.c | 642 +++------ mm/memory.c | 103 - mm/memory_hotplug.c | 10 mm/mempolicy.c | 5 mm/migrate.c | 30 mm/oom_kill.c | 4 mm/page_alloc.c | 735 ++++------ mm/page_owner.c | 7 mm/pgtable-generic.c | 2 mm/rmap.c | 53 mm/shmem.c | 156 -- mm/slab.c | 4 mm/slub.c | 8 mm/swap.c | 199 +- mm/swap_cgroup.c | 10 mm/swap_state.c | 110 - mm/swapfile.c | 39 mm/userfaultfd.c | 15 mm/vmscan.c | 344 ++-- mm/vmstat.c | 16 mm/workingset.c | 23 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 1 tools/testing/selftests/vm/khugepaged.c | 1035 +++++++++++++++ tools/vm/page_owner_sort.c | 5 147 files changed, 3876 insertions(+), 3108 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-02 20:09 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-06-02 20:09 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm A few little subsystems and a start of a lot of MM patches. 128 patches, based on f359287765c04711ff54fbd11645271d8e5ff763: Subsystems affected by this patch series: squashfs ocfs2 parisc vfs mm/slab-generic mm/slub mm/debug mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/memory-failure mm/vmalloc mm/kasan Subsystem: squashfs Philippe Liard <pliard@google.com>: squashfs: migrate from ll_rw_block usage to BIO Subsystem: ocfs2 Jules Irenge <jbi.octave@gmail.com>: ocfs2: add missing annotation for dlm_empty_lockres() Gang He <ghe@suse.com>: ocfs2: mount shared volume without ha stack Subsystem: parisc Andrew Morton <akpm@linux-foundation.org>: arch/parisc/include/asm/pgtable.h: remove unused `old_pte' Subsystem: vfs Jeff Layton <jlayton@redhat.com>: Patch series "vfs: have syncfs() return error when there are writeback: vfs: track per-sb writeback errors and report them to syncfs fs/buffer.c: record blockdev write errors in super_block that it backs Subsystem: mm/slab-generic Vlastimil Babka <vbabka@suse.cz>: usercopy: mark dma-kmalloc caches as usercopy caches Subsystem: mm/slub Dongli Zhang <dongli.zhang@oracle.com>: mm/slub.c: fix corrupted freechain in deactivate_slab() Christoph Lameter <cl@linux.com>: slub: Remove userspace notifier for cache add/remove Christopher Lameter <cl@linux.com>: slub: remove kmalloc under list_lock from list_slab_objects() V2 Qian Cai <cai@lca.pw>: mm/slub: fix stack overruns with SLUB_STATS Andrew Morton <akpm@linux-foundation.org>: Documentation/vm/slub.rst: s/Toggle/Enable/ Subsystem: mm/debug Vlastimil Babka <vbabka@suse.cz>: mm, dump_page(): do not crash with invalid mapping pointer Subsystem: mm/pagecache "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Change readahead API", v11: mm: move readahead prototypes from mm.h mm: return void from various readahead functions mm: ignore return value of ->readpages mm: move readahead nr_pages check into read_pages mm: add new readahead_control API mm: use readahead_control to pass arguments mm: rename various 'offset' parameters to 'index' mm: rename readahead loop variable to 'i' mm: remove 'page_offset' from readahead loop mm: put readahead pages in cache earlier mm: add readahead address space operation mm: move end_index check out of readahead loop mm: add page_cache_readahead_unbounded mm: document why we don't set PageReadahead mm: use memalloc_nofs_save in readahead path fs: convert mpage_readpages to mpage_readahead btrfs: convert from readpages to readahead erofs: convert uncompressed files from readpages to readahead erofs: convert compressed files from readpages to readahead ext4: convert from readpages to readahead ext4: pass the inode to ext4_mpage_readpages f2fs: convert from readpages to readahead f2fs: pass the inode to f2fs_mpage_readpages fuse: convert from readpages to readahead iomap: convert from readpages to readahead Guoqing Jiang <guoqing.jiang@cloud.ionos.com>: Patch series "Introduce attach/detach_page_private to cleanup code": include/linux/pagemap.h: introduce attach/detach_page_private md: remove __clear_page_buffers and use attach/detach_page_private btrfs: use attach/detach_page_private fs/buffer.c: use attach/detach_page_private f2fs: use attach/detach_page_private iomap: use attach/detach_page_private ntfs: replace attach_page_buffers with attach_page_private orangefs: use attach/detach_page_private buffer_head.h: remove attach_page_buffers mm/migrate.c: call detach_page_private to cleanup code mm_types.h: change set_page_private to inline function "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap.c: remove misleading comment Chao Yu <yuchao0@huawei.com>: mm/page-writeback.c: remove unused variable NeilBrown <neilb@suse.de>: mm/writeback: replace PF_LESS_THROTTLE with PF_LOCAL_THROTTLE mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead Subsystem: mm/gup Souptick Joarder <jrdr.linux@gmail.com>: mm/gup.c: update the documentation John Hubbard <jhubbard@nvidia.com>: mm/gup: introduce pin_user_pages_unlocked ivtv: convert get_user_pages() --> pin_user_pages() Miles Chen <miles.chen@mediatek.com>: mm/gup.c: further document vma_permits_fault() Subsystem: mm/swap chenqiwu <chenqiwu@xiaomi.com>: mm/swapfile: use list_{prev,next}_entry() instead of open-coding Qian Cai <cai@lca.pw>: mm/swap_state: fix a data race in swapin_nr_pages Andrea Righi <andrea.righi@canonical.com>: mm: swap: properly update readahead statistics in unuse_pte_range() Wei Yang <richard.weiyang@gmail.com>: mm/swapfile.c: offset is only used when there is more slots mm/swapfile.c: explicitly show ssd/non-ssd is handled mutually exclusive mm/swapfile.c: remove the unnecessary goto for SSD case mm/swapfile.c: simplify the calculation of n_goal mm/swapfile.c: remove the extra check in scan_swap_map_slots() mm/swapfile.c: found_free could be represented by (tmp < max) mm/swapfile.c: tmp is always smaller than max mm/swapfile.c: omit a duplicate code by compare tmp and max first Huang Ying <ying.huang@intel.com>: swap: try to scan more free slots even when fragmented Wei Yang <richard.weiyang@gmail.com>: mm/swapfile.c: classify SWAP_MAP_XXX to make it more readable mm/swapfile.c: __swap_entry_free() always free 1 entry Huang Ying <ying.huang@intel.com>: mm/swapfile.c: use prandom_u32_max() swap: reduce lock contention on swap cache from swap slots allocation Randy Dunlap <rdunlap@infradead.org>: mm: swapfile: fix /proc/swaps heading and Size/Used/Priority alignment Miaohe Lin <linmiaohe@huawei.com>: include/linux/swap.h: delete meaningless __add_to_swap_cache() declaration Subsystem: mm/memcg Yafang Shao <laoar.shao@gmail.com>: mm, memcg: add workingset_restore in memory.stat Kaixu Xia <kaixuxia@tencent.com>: mm: memcontrol: simplify value comparison between count and limit Shakeel Butt <shakeelb@google.com>: memcg: expose root cgroup's memory.stat Jakub Kicinski <kuba@kernel.org>: Patch series "memcg: Slow down swap allocation as the available space gets: mm/memcg: prepare for swap over-high accounting and penalty calculation mm/memcg: move penalty delay clamping out of calculate_high_delay() mm/memcg: move cgroup high memory limit setting into struct page_counter mm/memcg: automatically penalize tasks with high swap use Zefan Li <lizefan@huawei.com>: memcg: fix memcg_kmem_bypass() for remote memcg charging Subsystem: mm/pagemap Steven Price <steven.price@arm.com>: Patch series "Fix W+X debug feature on x86": x86: mm: ptdump: calculate effective permissions correctly mm: ptdump: expand type of 'val' in note_page() Huang Ying <ying.huang@intel.com>: /proc/PID/smaps: Add PMD migration entry parsing chenqiwu <chenqiwu@xiaomi.com>: mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Subsystem: mm/memory-failure Wetp Zhang <wetp.zy@linux.alibaba.com>: mm, memory_failure: don't send BUS_MCEERR_AO for action required error Subsystem: mm/vmalloc Christoph Hellwig <hch@lst.de>: Patch series "decruft the vmalloc API", v2: x86/hyperv: use vmalloc_exec for the hypercall page x86: fix vmap arguments in map_irq_stack staging: android: ion: use vmap instead of vm_map_ram staging: media: ipu3: use vmap instead of reimplementing it dma-mapping: use vmap insted of reimplementing it powerpc: add an ioremap_phb helper powerpc: remove __ioremap_at and __iounmap_at mm: remove __get_vm_area mm: unexport unmap_kernel_range_noflush mm: rename CONFIG_PGTABLE_MAPPING to CONFIG_ZSMALLOC_PGTABLE_MAPPING mm: only allow page table mappings for built-in zsmalloc mm: pass addr as unsigned long to vb_free mm: remove vmap_page_range_noflush and vunmap_page_range mm: rename vmap_page_range to map_kernel_range mm: don't return the number of pages from map_kernel_range{,_noflush} mm: remove map_vm_range mm: remove unmap_vmap_area mm: remove the prot argument from vm_map_ram mm: enforce that vmap can't map pages executable gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc mm: remove the pgprot argument to __vmalloc mm: remove the prot argument to __vmalloc_node mm: remove both instances of __vmalloc_node_flags mm: remove __vmalloc_node_flags_caller mm: switch the test_vmalloc module to use __vmalloc_node mm: remove vmalloc_user_node_flags arm64: use __vmalloc_node in arch_alloc_vmap_stack powerpc: use __vmalloc_node in alloc_vm_stack s390: use __vmalloc_node in stack_alloc Joerg Roedel <jroedel@suse.de>: Patch series "mm: Get rid of vmalloc_sync_(un)mappings()", v3: mm: add functions to track page directory modifications mm/vmalloc: track which page-table levels were modified mm/ioremap: track which page-table levels were modified x86/mm/64: implement arch_sync_kernel_mappings() x86/mm/32: implement arch_sync_kernel_mappings() mm: remove vmalloc_sync_(un)mappings() x86/mm: remove vmalloc faulting Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: fix clang compilation warning due to stack protector Kees Cook <keescook@chromium.org>: ubsan: entirely disable alignment checks under UBSAN_TRAP Jing Xia <jing.xia@unisoc.com>: mm/mm_init.c: report kasan-tag information stored in page->flags Andrey Konovalov <andreyknvl@google.com>: kasan: move kasan_report() into report.c Documentation/admin-guide/cgroup-v2.rst | 24 + Documentation/core-api/cachetlb.rst | 2 Documentation/filesystems/locking.rst | 6 Documentation/filesystems/proc.rst | 4 Documentation/filesystems/vfs.rst | 15 Documentation/vm/slub.rst | 2 arch/arm/configs/omap2plus_defconfig | 2 arch/arm64/include/asm/pgtable.h | 3 arch/arm64/include/asm/vmap_stack.h | 6 arch/arm64/mm/dump.c | 2 arch/parisc/include/asm/pgtable.h | 2 arch/powerpc/include/asm/io.h | 10 arch/powerpc/include/asm/pci-bridge.h | 2 arch/powerpc/kernel/irq.c | 5 arch/powerpc/kernel/isa-bridge.c | 28 + arch/powerpc/kernel/pci_64.c | 56 +- arch/powerpc/mm/ioremap_64.c | 50 -- arch/riscv/include/asm/pgtable.h | 4 arch/riscv/mm/ptdump.c | 2 arch/s390/kernel/setup.c | 9 arch/sh/kernel/cpu/sh4/sq.c | 3 arch/x86/hyperv/hv_init.c | 5 arch/x86/include/asm/kvm_host.h | 3 arch/x86/include/asm/pgtable-2level_types.h | 2 arch/x86/include/asm/pgtable-3level_types.h | 2 arch/x86/include/asm/pgtable_64_types.h | 2 arch/x86/include/asm/pgtable_types.h | 8 arch/x86/include/asm/switch_to.h | 23 - arch/x86/kernel/irq_64.c | 2 arch/x86/kernel/setup_percpu.c | 6 arch/x86/kvm/svm/sev.c | 3 arch/x86/mm/dump_pagetables.c | 35 + arch/x86/mm/fault.c | 196 ---------- arch/x86/mm/init_64.c | 5 arch/x86/mm/pti.c | 8 arch/x86/mm/tlb.c | 37 - block/blk-core.c | 1 drivers/acpi/apei/ghes.c | 6 drivers/base/node.c | 2 drivers/block/drbd/drbd_bitmap.c | 4 drivers/block/loop.c | 2 drivers/dax/device.c | 1 drivers/gpu/drm/drm_scatter.c | 11 drivers/gpu/drm/etnaviv/etnaviv_dump.c | 4 drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c | 2 drivers/lightnvm/pblk-init.c | 5 drivers/md/dm-bufio.c | 4 drivers/md/md-bitmap.c | 12 drivers/media/common/videobuf2/videobuf2-dma-sg.c | 3 drivers/media/common/videobuf2/videobuf2-vmalloc.c | 3 drivers/media/pci/ivtv/ivtv-udma.c | 19 - drivers/media/pci/ivtv/ivtv-yuv.c | 17 drivers/media/pci/ivtv/ivtvfb.c | 4 drivers/mtd/ubi/io.c | 4 drivers/pcmcia/electra_cf.c | 45 -- drivers/scsi/sd_zbc.c | 3 drivers/staging/android/ion/ion_heap.c | 4 drivers/staging/media/ipu3/ipu3-css-pool.h | 4 drivers/staging/media/ipu3/ipu3-dmamap.c | 30 - fs/block_dev.c | 7 fs/btrfs/disk-io.c | 4 fs/btrfs/extent_io.c | 64 --- fs/btrfs/extent_io.h | 3 fs/btrfs/inode.c | 39 -- fs/buffer.c | 23 - fs/erofs/data.c | 41 -- fs/erofs/decompressor.c | 2 fs/erofs/zdata.c | 31 - fs/exfat/inode.c | 7 fs/ext2/inode.c | 10 fs/ext4/ext4.h | 5 fs/ext4/inode.c | 25 - fs/ext4/readpage.c | 25 - fs/ext4/verity.c | 35 - fs/f2fs/data.c | 56 +- fs/f2fs/f2fs.h | 14 fs/f2fs/verity.c | 35 - fs/fat/inode.c | 7 fs/file_table.c | 1 fs/fs-writeback.c | 1 fs/fuse/file.c | 100 +---- fs/gfs2/aops.c | 23 - fs/gfs2/dir.c | 9 fs/gfs2/quota.c | 2 fs/hpfs/file.c | 7 fs/iomap/buffered-io.c | 113 +---- fs/iomap/trace.h | 2 fs/isofs/inode.c | 7 fs/jfs/inode.c | 7 fs/mpage.c | 38 -- fs/nfs/blocklayout/extent_tree.c | 2 fs/nfs/internal.h | 10 fs/nfs/write.c | 4 fs/nfsd/vfs.c | 9 fs/nilfs2/inode.c | 15 fs/ntfs/aops.c | 2 fs/ntfs/malloc.h | 2 fs/ntfs/mft.c | 2 fs/ocfs2/aops.c | 34 - fs/ocfs2/dlm/dlmmaster.c | 1 fs/ocfs2/ocfs2.h | 4 fs/ocfs2/slot_map.c | 46 +- fs/ocfs2/super.c | 21 + fs/omfs/file.c | 7 fs/open.c | 3 fs/orangefs/inode.c | 32 - fs/proc/meminfo.c | 3 fs/proc/task_mmu.c | 16 fs/qnx6/inode.c | 7 fs/reiserfs/inode.c | 8 fs/squashfs/block.c | 273 +++++++------- fs/squashfs/decompressor.h | 5 fs/squashfs/decompressor_multi.c | 9 fs/squashfs/decompressor_multi_percpu.c | 17 fs/squashfs/decompressor_single.c | 9 fs/squashfs/lz4_wrapper.c | 17 fs/squashfs/lzo_wrapper.c | 17 fs/squashfs/squashfs.h | 4 fs/squashfs/xz_wrapper.c | 51 +- fs/squashfs/zlib_wrapper.c | 63 +-- fs/squashfs/zstd_wrapper.c | 62 +-- fs/sync.c | 6 fs/ubifs/debug.c | 2 fs/ubifs/lprops.c | 2 fs/ubifs/lpt_commit.c | 4 fs/ubifs/orphan.c | 2 fs/udf/inode.c | 7 fs/xfs/kmem.c | 2 fs/xfs/xfs_aops.c | 13 fs/xfs/xfs_buf.c | 2 fs/zonefs/super.c | 7 include/asm-generic/5level-fixup.h | 5 include/asm-generic/pgtable.h | 27 + include/linux/buffer_head.h | 8 include/linux/fs.h | 18 include/linux/iomap.h | 3 include/linux/memcontrol.h | 4 include/linux/mm.h | 67 ++- include/linux/mm_types.h | 6 include/linux/mmzone.h | 1 include/linux/mpage.h | 4 include/linux/page_counter.h | 8 include/linux/pagemap.h | 193 ++++++++++ include/linux/ptdump.h | 3 include/linux/sched.h | 3 include/linux/swap.h | 17 include/linux/vmalloc.h | 49 +- include/linux/zsmalloc.h | 2 include/trace/events/erofs.h | 6 include/trace/events/f2fs.h | 6 include/trace/events/writeback.h | 5 kernel/bpf/core.c | 6 kernel/bpf/syscall.c | 29 - kernel/dma/remap.c | 48 -- kernel/groups.c | 2 kernel/module.c | 3 kernel/notifier.c | 1 kernel/sys.c | 2 kernel/trace/trace.c | 12 lib/Kconfig.ubsan | 2 lib/ioremap.c | 46 +- lib/test_vmalloc.c | 26 - mm/Kconfig | 4 mm/debug.c | 56 ++ mm/fadvise.c | 6 mm/filemap.c | 1 mm/gup.c | 77 +++- mm/internal.h | 14 mm/kasan/Makefile | 21 - mm/kasan/common.c | 19 - mm/kasan/report.c | 22 + mm/memcontrol.c | 198 +++++++--- mm/memory-failure.c | 15 mm/memory.c | 2 mm/migrate.c | 9 mm/mm_init.c | 16 mm/nommu.c | 52 +- mm/page-writeback.c | 62 ++- mm/page_alloc.c | 7 mm/percpu.c | 2 mm/ptdump.c | 17 mm/readahead.c | 349 ++++++++++-------- mm/slab_common.c | 3 mm/slub.c | 67 ++- mm/swap_state.c | 5 mm/swapfile.c | 194 ++++++---- mm/util.c | 2 mm/vmalloc.c | 399 ++++++++------------- mm/vmscan.c | 4 mm/vmstat.c | 11 mm/zsmalloc.c | 12 net/bridge/netfilter/ebtables.c | 6 net/ceph/ceph_common.c | 3 sound/core/memalloc.c | 2 sound/core/pcm_memory.c | 2 195 files changed, 2292 insertions(+), 2288 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-06-02 4:44 Andrew Morton 2020-06-02 20:08 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-06-02 4:44 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm A few little subsystems and a start of a lot of MM patches. 128 patches, based on 9bf9511e3d9f328c03f6f79bfb741c3d18f2f2c0: Subsystems affected by this patch series: squashfs ocfs2 parisc vfs mm/slab-generic mm/slub mm/debug mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/memory-failure mm/vmalloc mm/kasan Subsystem: squashfs Philippe Liard <pliard@google.com>: squashfs: migrate from ll_rw_block usage to BIO Subsystem: ocfs2 Jules Irenge <jbi.octave@gmail.com>: ocfs2: add missing annotation for dlm_empty_lockres() Gang He <ghe@suse.com>: ocfs2: mount shared volume without ha stack Subsystem: parisc Andrew Morton <akpm@linux-foundation.org>: arch/parisc/include/asm/pgtable.h: remove unused `old_pte' Subsystem: vfs Jeff Layton <jlayton@redhat.com>: Patch series "vfs: have syncfs() return error when there are writeback: vfs: track per-sb writeback errors and report them to syncfs fs/buffer.c: record blockdev write errors in super_block that it backs Subsystem: mm/slab-generic Vlastimil Babka <vbabka@suse.cz>: usercopy: mark dma-kmalloc caches as usercopy caches Subsystem: mm/slub Dongli Zhang <dongli.zhang@oracle.com>: mm/slub.c: fix corrupted freechain in deactivate_slab() Christoph Lameter <cl@linux.com>: slub: Remove userspace notifier for cache add/remove Christopher Lameter <cl@linux.com>: slub: remove kmalloc under list_lock from list_slab_objects() V2 Qian Cai <cai@lca.pw>: mm/slub: fix stack overruns with SLUB_STATS Andrew Morton <akpm@linux-foundation.org>: Documentation/vm/slub.rst: s/Toggle/Enable/ Subsystem: mm/debug Vlastimil Babka <vbabka@suse.cz>: mm, dump_page(): do not crash with invalid mapping pointer Subsystem: mm/pagecache "Matthew Wilcox (Oracle)" <willy@infradead.org>: Patch series "Change readahead API", v11: mm: move readahead prototypes from mm.h mm: return void from various readahead functions mm: ignore return value of ->readpages mm: move readahead nr_pages check into read_pages mm: add new readahead_control API mm: use readahead_control to pass arguments mm: rename various 'offset' parameters to 'index' mm: rename readahead loop variable to 'i' mm: remove 'page_offset' from readahead loop mm: put readahead pages in cache earlier mm: add readahead address space operation mm: move end_index check out of readahead loop mm: add page_cache_readahead_unbounded mm: document why we don't set PageReadahead mm: use memalloc_nofs_save in readahead path fs: convert mpage_readpages to mpage_readahead btrfs: convert from readpages to readahead erofs: convert uncompressed files from readpages to readahead erofs: convert compressed files from readpages to readahead ext4: convert from readpages to readahead ext4: pass the inode to ext4_mpage_readpages f2fs: convert from readpages to readahead f2fs: pass the inode to f2fs_mpage_readpages fuse: convert from readpages to readahead iomap: convert from readpages to readahead Guoqing Jiang <guoqing.jiang@cloud.ionos.com>: Patch series "Introduce attach/detach_page_private to cleanup code": include/linux/pagemap.h: introduce attach/detach_page_private md: remove __clear_page_buffers and use attach/detach_page_private btrfs: use attach/detach_page_private fs/buffer.c: use attach/detach_page_private f2fs: use attach/detach_page_private iomap: use attach/detach_page_private ntfs: replace attach_page_buffers with attach_page_private orangefs: use attach/detach_page_private buffer_head.h: remove attach_page_buffers mm/migrate.c: call detach_page_private to cleanup code mm_types.h: change set_page_private to inline function "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap.c: remove misleading comment Chao Yu <yuchao0@huawei.com>: mm/page-writeback.c: remove unused variable NeilBrown <neilb@suse.de>: mm/writeback: replace PF_LESS_THROTTLE with PF_LOCAL_THROTTLE mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead Subsystem: mm/gup Souptick Joarder <jrdr.linux@gmail.com>: mm/gup.c: update the documentation John Hubbard <jhubbard@nvidia.com>: mm/gup: introduce pin_user_pages_unlocked ivtv: convert get_user_pages() --> pin_user_pages() Miles Chen <miles.chen@mediatek.com>: mm/gup.c: further document vma_permits_fault() Subsystem: mm/swap chenqiwu <chenqiwu@xiaomi.com>: mm/swapfile: use list_{prev,next}_entry() instead of open-coding Qian Cai <cai@lca.pw>: mm/swap_state: fix a data race in swapin_nr_pages Andrea Righi <andrea.righi@canonical.com>: mm: swap: properly update readahead statistics in unuse_pte_range() Wei Yang <richard.weiyang@gmail.com>: mm/swapfile.c: offset is only used when there is more slots mm/swapfile.c: explicitly show ssd/non-ssd is handled mutually exclusive mm/swapfile.c: remove the unnecessary goto for SSD case mm/swapfile.c: simplify the calculation of n_goal mm/swapfile.c: remove the extra check in scan_swap_map_slots() mm/swapfile.c: found_free could be represented by (tmp < max) mm/swapfile.c: tmp is always smaller than max mm/swapfile.c: omit a duplicate code by compare tmp and max first Huang Ying <ying.huang@intel.com>: swap: try to scan more free slots even when fragmented Wei Yang <richard.weiyang@gmail.com>: mm/swapfile.c: classify SWAP_MAP_XXX to make it more readable mm/swapfile.c: __swap_entry_free() always free 1 entry Huang Ying <ying.huang@intel.com>: mm/swapfile.c: use prandom_u32_max() swap: reduce lock contention on swap cache from swap slots allocation Randy Dunlap <rdunlap@infradead.org>: mm: swapfile: fix /proc/swaps heading and Size/Used/Priority alignment Miaohe Lin <linmiaohe@huawei.com>: include/linux/swap.h: delete meaningless __add_to_swap_cache() declaration Subsystem: mm/memcg Yafang Shao <laoar.shao@gmail.com>: mm, memcg: add workingset_restore in memory.stat Kaixu Xia <kaixuxia@tencent.com>: mm: memcontrol: simplify value comparison between count and limit Shakeel Butt <shakeelb@google.com>: memcg: expose root cgroup's memory.stat Jakub Kicinski <kuba@kernel.org>: Patch series "memcg: Slow down swap allocation as the available space gets: mm/memcg: prepare for swap over-high accounting and penalty calculation mm/memcg: move penalty delay clamping out of calculate_high_delay() mm/memcg: move cgroup high memory limit setting into struct page_counter mm/memcg: automatically penalize tasks with high swap use Zefan Li <lizefan@huawei.com>: memcg: fix memcg_kmem_bypass() for remote memcg charging Subsystem: mm/pagemap Steven Price <steven.price@arm.com>: Patch series "Fix W+X debug feature on x86": x86: mm: ptdump: calculate effective permissions correctly mm: ptdump: expand type of 'val' in note_page() Huang Ying <ying.huang@intel.com>: /proc/PID/smaps: Add PMD migration entry parsing chenqiwu <chenqiwu@xiaomi.com>: mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Subsystem: mm/memory-failure Wetp Zhang <wetp.zy@linux.alibaba.com>: mm, memory_failure: don't send BUS_MCEERR_AO for action required error Subsystem: mm/vmalloc Christoph Hellwig <hch@lst.de>: Patch series "decruft the vmalloc API", v2: x86/hyperv: use vmalloc_exec for the hypercall page x86: fix vmap arguments in map_irq_stack staging: android: ion: use vmap instead of vm_map_ram staging: media: ipu3: use vmap instead of reimplementing it dma-mapping: use vmap insted of reimplementing it powerpc: add an ioremap_phb helper powerpc: remove __ioremap_at and __iounmap_at mm: remove __get_vm_area mm: unexport unmap_kernel_range_noflush mm: rename CONFIG_PGTABLE_MAPPING to CONFIG_ZSMALLOC_PGTABLE_MAPPING mm: only allow page table mappings for built-in zsmalloc mm: pass addr as unsigned long to vb_free mm: remove vmap_page_range_noflush and vunmap_page_range mm: rename vmap_page_range to map_kernel_range mm: don't return the number of pages from map_kernel_range{,_noflush} mm: remove map_vm_range mm: remove unmap_vmap_area mm: remove the prot argument from vm_map_ram mm: enforce that vmap can't map pages executable gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc mm: remove the pgprot argument to __vmalloc mm: remove the prot argument to __vmalloc_node mm: remove both instances of __vmalloc_node_flags mm: remove __vmalloc_node_flags_caller mm: switch the test_vmalloc module to use __vmalloc_node mm: remove vmalloc_user_node_flags arm64: use __vmalloc_node in arch_alloc_vmap_stack powerpc: use __vmalloc_node in alloc_vm_stack s390: use __vmalloc_node in stack_alloc Joerg Roedel <jroedel@suse.de>: Patch series "mm: Get rid of vmalloc_sync_(un)mappings()", v3: mm: add functions to track page directory modifications mm/vmalloc: track which page-table levels were modified mm/ioremap: track which page-table levels were modified x86/mm/64: implement arch_sync_kernel_mappings() x86/mm/32: implement arch_sync_kernel_mappings() mm: remove vmalloc_sync_(un)mappings() x86/mm: remove vmalloc faulting Subsystem: mm/kasan Andrey Konovalov <andreyknvl@google.com>: kasan: fix clang compilation warning due to stack protector Kees Cook <keescook@chromium.org>: ubsan: entirely disable alignment checks under UBSAN_TRAP Jing Xia <jing.xia@unisoc.com>: mm/mm_init.c: report kasan-tag information stored in page->flags Andrey Konovalov <andreyknvl@google.com>: kasan: move kasan_report() into report.c Documentation/admin-guide/cgroup-v2.rst | 24 + Documentation/core-api/cachetlb.rst | 2 Documentation/filesystems/locking.rst | 6 Documentation/filesystems/proc.rst | 4 Documentation/filesystems/vfs.rst | 15 Documentation/vm/slub.rst | 2 arch/arm/configs/omap2plus_defconfig | 2 arch/arm64/include/asm/pgtable.h | 3 arch/arm64/include/asm/vmap_stack.h | 6 arch/arm64/mm/dump.c | 2 arch/parisc/include/asm/pgtable.h | 2 arch/powerpc/include/asm/io.h | 10 arch/powerpc/include/asm/pci-bridge.h | 2 arch/powerpc/kernel/irq.c | 5 arch/powerpc/kernel/isa-bridge.c | 28 + arch/powerpc/kernel/pci_64.c | 56 +- arch/powerpc/mm/ioremap_64.c | 50 -- arch/riscv/include/asm/pgtable.h | 4 arch/riscv/mm/ptdump.c | 2 arch/s390/kernel/setup.c | 9 arch/sh/kernel/cpu/sh4/sq.c | 3 arch/x86/hyperv/hv_init.c | 5 arch/x86/include/asm/kvm_host.h | 3 arch/x86/include/asm/pgtable-2level_types.h | 2 arch/x86/include/asm/pgtable-3level_types.h | 2 arch/x86/include/asm/pgtable_64_types.h | 2 arch/x86/include/asm/pgtable_types.h | 8 arch/x86/include/asm/switch_to.h | 23 - arch/x86/kernel/irq_64.c | 2 arch/x86/kernel/setup_percpu.c | 6 arch/x86/kvm/svm/sev.c | 3 arch/x86/mm/dump_pagetables.c | 35 + arch/x86/mm/fault.c | 196 ---------- arch/x86/mm/init_64.c | 5 arch/x86/mm/pti.c | 8 arch/x86/mm/tlb.c | 37 - block/blk-core.c | 1 drivers/acpi/apei/ghes.c | 6 drivers/base/node.c | 2 drivers/block/drbd/drbd_bitmap.c | 4 drivers/block/loop.c | 2 drivers/dax/device.c | 1 drivers/gpu/drm/drm_scatter.c | 11 drivers/gpu/drm/etnaviv/etnaviv_dump.c | 4 drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c | 2 drivers/lightnvm/pblk-init.c | 5 drivers/md/dm-bufio.c | 4 drivers/md/md-bitmap.c | 12 drivers/media/common/videobuf2/videobuf2-dma-sg.c | 3 drivers/media/common/videobuf2/videobuf2-vmalloc.c | 3 drivers/media/pci/ivtv/ivtv-udma.c | 19 - drivers/media/pci/ivtv/ivtv-yuv.c | 17 drivers/media/pci/ivtv/ivtvfb.c | 4 drivers/mtd/ubi/io.c | 4 drivers/pcmcia/electra_cf.c | 45 -- drivers/scsi/sd_zbc.c | 3 drivers/staging/android/ion/ion_heap.c | 4 drivers/staging/media/ipu3/ipu3-css-pool.h | 4 drivers/staging/media/ipu3/ipu3-dmamap.c | 30 - fs/block_dev.c | 7 fs/btrfs/disk-io.c | 4 fs/btrfs/extent_io.c | 64 --- fs/btrfs/extent_io.h | 3 fs/btrfs/inode.c | 39 -- fs/buffer.c | 23 - fs/erofs/data.c | 41 -- fs/erofs/decompressor.c | 2 fs/erofs/zdata.c | 31 - fs/exfat/inode.c | 7 fs/ext2/inode.c | 10 fs/ext4/ext4.h | 5 fs/ext4/inode.c | 25 - fs/ext4/readpage.c | 25 - fs/ext4/verity.c | 35 - fs/f2fs/data.c | 56 +- fs/f2fs/f2fs.h | 14 fs/f2fs/verity.c | 35 - fs/fat/inode.c | 7 fs/file_table.c | 1 fs/fs-writeback.c | 1 fs/fuse/file.c | 100 +---- fs/gfs2/aops.c | 23 - fs/gfs2/dir.c | 9 fs/gfs2/quota.c | 2 fs/hpfs/file.c | 7 fs/iomap/buffered-io.c | 113 +---- fs/iomap/trace.h | 2 fs/isofs/inode.c | 7 fs/jfs/inode.c | 7 fs/mpage.c | 38 -- fs/nfs/blocklayout/extent_tree.c | 2 fs/nfs/internal.h | 10 fs/nfs/write.c | 4 fs/nfsd/vfs.c | 9 fs/nilfs2/inode.c | 15 fs/ntfs/aops.c | 2 fs/ntfs/malloc.h | 2 fs/ntfs/mft.c | 2 fs/ocfs2/aops.c | 34 - fs/ocfs2/dlm/dlmmaster.c | 1 fs/ocfs2/ocfs2.h | 4 fs/ocfs2/slot_map.c | 46 +- fs/ocfs2/super.c | 21 + fs/omfs/file.c | 7 fs/open.c | 3 fs/orangefs/inode.c | 32 - fs/proc/meminfo.c | 3 fs/proc/task_mmu.c | 16 fs/qnx6/inode.c | 7 fs/reiserfs/inode.c | 8 fs/squashfs/block.c | 273 +++++++------- fs/squashfs/decompressor.h | 5 fs/squashfs/decompressor_multi.c | 9 fs/squashfs/decompressor_multi_percpu.c | 17 fs/squashfs/decompressor_single.c | 9 fs/squashfs/lz4_wrapper.c | 17 fs/squashfs/lzo_wrapper.c | 17 fs/squashfs/squashfs.h | 4 fs/squashfs/xz_wrapper.c | 51 +- fs/squashfs/zlib_wrapper.c | 63 +-- fs/squashfs/zstd_wrapper.c | 62 +-- fs/sync.c | 6 fs/ubifs/debug.c | 2 fs/ubifs/lprops.c | 2 fs/ubifs/lpt_commit.c | 4 fs/ubifs/orphan.c | 2 fs/udf/inode.c | 7 fs/xfs/kmem.c | 2 fs/xfs/xfs_aops.c | 13 fs/xfs/xfs_buf.c | 2 fs/zonefs/super.c | 7 include/asm-generic/5level-fixup.h | 5 include/asm-generic/pgtable.h | 27 + include/linux/buffer_head.h | 8 include/linux/fs.h | 18 include/linux/iomap.h | 3 include/linux/memcontrol.h | 4 include/linux/mm.h | 67 ++- include/linux/mm_types.h | 6 include/linux/mmzone.h | 1 include/linux/mpage.h | 4 include/linux/page_counter.h | 8 include/linux/pagemap.h | 193 ++++++++++ include/linux/ptdump.h | 3 include/linux/sched.h | 3 include/linux/swap.h | 17 include/linux/vmalloc.h | 49 +- include/linux/zsmalloc.h | 2 include/trace/events/erofs.h | 6 include/trace/events/f2fs.h | 6 include/trace/events/writeback.h | 5 kernel/bpf/core.c | 6 kernel/bpf/syscall.c | 29 - kernel/dma/remap.c | 48 -- kernel/groups.c | 2 kernel/module.c | 3 kernel/notifier.c | 1 kernel/sys.c | 2 kernel/trace/trace.c | 12 lib/Kconfig.ubsan | 2 lib/ioremap.c | 46 +- lib/test_vmalloc.c | 26 - mm/Kconfig | 4 mm/debug.c | 56 ++ mm/fadvise.c | 6 mm/filemap.c | 1 mm/gup.c | 77 +++- mm/internal.h | 14 mm/kasan/Makefile | 21 - mm/kasan/common.c | 19 - mm/kasan/report.c | 22 + mm/memcontrol.c | 198 +++++++--- mm/memory-failure.c | 15 mm/memory.c | 2 mm/migrate.c | 9 mm/mm_init.c | 16 mm/nommu.c | 52 +- mm/page-writeback.c | 62 ++- mm/page_alloc.c | 7 mm/percpu.c | 2 mm/ptdump.c | 17 mm/readahead.c | 349 ++++++++++-------- mm/slab_common.c | 3 mm/slub.c | 67 ++- mm/swap_state.c | 5 mm/swapfile.c | 194 ++++++---- mm/util.c | 2 mm/vmalloc.c | 399 ++++++++------------- mm/vmscan.c | 4 mm/vmstat.c | 11 mm/zsmalloc.c | 12 net/bridge/netfilter/ebtables.c | 6 net/ceph/ceph_common.c | 3 sound/core/memalloc.c | 2 sound/core/pcm_memory.c | 2 195 files changed, 2292 insertions(+), 2288 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-02 4:44 incoming Andrew Morton @ 2020-06-02 20:08 ` Andrew Morton 2020-06-02 20:45 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-06-02 20:08 UTC (permalink / raw) To: Linus Torvalds, mm-commits, linux-mm The local_lock merge made rather a mess of all of this. I'm cooking up a full resend of the same material. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-02 20:08 ` incoming Andrew Morton @ 2020-06-02 20:45 ` Linus Torvalds 2020-06-02 21:38 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-06-02 20:45 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Tue, Jun 2, 2020 at 1:08 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > The local_lock merge made rather a mess of all of this. I'm > cooking up a full resend of the same material. Hmm. I have no issues with conflicts, and already took your previous series. I've pushed it out now - does my tree match what you expect? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-02 20:45 ` incoming Linus Torvalds @ 2020-06-02 21:38 ` Andrew Morton 2020-06-02 22:18 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-06-02 21:38 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, Linux-MM On Tue, 2 Jun 2020 13:45:49 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, Jun 2, 2020 at 1:08 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > The local_lock merge made rather a mess of all of this. I'm > > cooking up a full resend of the same material. > > Hmm. I have no issues with conflicts, and already took your previous series. Well that's odd. > I've pushed it out now - does my tree match what you expect? Yup, thanks. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-06-02 21:38 ` incoming Andrew Morton @ 2020-06-02 22:18 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-06-02 22:18 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Tue, Jun 2, 2020 at 2:38 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > On Tue, 2 Jun 2020 13:45:49 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > > > > Hmm. I have no issues with conflicts, and already took your previous series. > > Well that's odd. I meant "I saw the conflicts and had no issue with them". Nothing odd. And I actually much prefer seeing conflicts from your series (against other pulls I've done) over having you delay your patch bombs because of any fear for them. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-05-28 5:20 Andrew Morton 2020-05-28 20:10 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-05-28 5:20 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 5 fixes, based on 444fc5cde64330661bf59944c43844e7d4c2ccd8: Qian Cai <cai@lca.pw>: mm/z3fold: silence kmemleak false positives of slots Hugh Dickins <hughd@google.com>: mm,thp: stop leaking unreleased file pages Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm: remove VM_BUG_ON(PageSlab()) from page_mapcount() Alexander Potapenko <glider@google.com>: fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info() Arnd Bergmann <arnd@arndb.de>: include/asm-generic/topology.h: guard cpumask_of_node() macro argument fs/binfmt_elf.c | 2 +- include/asm-generic/topology.h | 2 +- include/linux/mm.h | 19 +++++++++++++++---- mm/khugepaged.c | 1 + mm/z3fold.c | 3 +++ 5 files changed, 21 insertions(+), 6 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-05-28 5:20 incoming Andrew Morton @ 2020-05-28 20:10 ` Linus Torvalds 2020-05-29 20:31 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-05-28 20:10 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM Hmm.. On Wed, May 27, 2020 at 10:20 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > fs/binfmt_elf.c | 2 +- > include/asm-generic/topology.h | 2 +- > include/linux/mm.h | 19 +++++++++++++++---- > mm/khugepaged.c | 1 + > mm/z3fold.c | 3 +++ > 5 files changed, 21 insertions(+), 6 deletions(-) I wonder how you generate that diffstat. The change to <linux/mm.h> simply doesn't match what you sent me. The patch you sent me that changed mm.h had this: include/linux/mm.h | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (note 15 lines changed: it's +13 and -2) but now suddenly in your overall diffstat you have that include/linux/mm.h | 19 +++++++++++++++---- with +15/-4. So your diffstat simply doesn't match what you are sending. What's going on? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-05-28 20:10 ` incoming Linus Torvalds @ 2020-05-29 20:31 ` Andrew Morton 2020-05-29 20:38 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-05-29 20:31 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, Linux-MM On Thu, 28 May 2020 13:10:18 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > Hmm.. > > On Wed, May 27, 2020 at 10:20 PM Andrew Morton > <akpm@linux-foundation.org> wrote: > > > > fs/binfmt_elf.c | 2 +- > > include/asm-generic/topology.h | 2 +- > > include/linux/mm.h | 19 +++++++++++++++---- > > mm/khugepaged.c | 1 + > > mm/z3fold.c | 3 +++ > > 5 files changed, 21 insertions(+), 6 deletions(-) > > I wonder how you generate that diffstat. > > The change to <linux/mm.h> simply doesn't match what you sent me. The > patch you sent me that changed mm.h had this: > > include/linux/mm.h | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > (note 15 lines changed: it's +13 and -2) but now suddenly in your > overall diffstat you have that > > include/linux/mm.h | 19 +++++++++++++++---- > > with +15/-4. > > So your diffstat simply doesn't match what you are sending. What's going on? > Bah. I got lazy (didn't want to interrupt an ongoing build) so I generated the diffstat prior to folding two patches into a single one. Evidently diffstat isn't as smart as I had assumed! ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-05-29 20:31 ` incoming Andrew Morton @ 2020-05-29 20:38 ` Linus Torvalds 2020-05-29 21:12 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-05-29 20:38 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Fri, May 29, 2020 at 1:31 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > Bah. I got lazy (didn't want to interrupt an ongoing build) so I > generated the diffstat prior to folding two patches into a single one. > Evidently diffstat isn't as smart as I had assumed! Ahh. Yes - given two patches, diffstat just adds up the line number counts for the individual diffs, it doesn't count some kind of "combined diff result" line counts. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-05-29 20:38 ` incoming Linus Torvalds @ 2020-05-29 21:12 ` Andrew Morton 2020-05-29 21:20 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-05-29 21:12 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, Linux-MM On Fri, 29 May 2020 13:38:35 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Fri, May 29, 2020 at 1:31 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > Bah. I got lazy (didn't want to interrupt an ongoing build) so I > > generated the diffstat prior to folding two patches into a single one. > > Evidently diffstat isn't as smart as I had assumed! > > Ahh. Yes - given two patches, diffstat just adds up the line number > counts for the individual diffs, it doesn't count some kind of > "combined diff result" line counts. Stupid diffstat. Means that basically all my diffstats are very wrong. Thanks for spotting it. I can fix that... ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-05-29 21:12 ` incoming Andrew Morton @ 2020-05-29 21:20 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-05-29 21:20 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Fri, May 29, 2020 at 2:12 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > Stupid diffstat. Means that basically all my diffstats are very wrong. I'm actually used to diffstats not matching 100%/ Usually it's not due to this issue - a "git diff --stat" *will* give the stat from the actual combined diff result - but with git diffstats the issue is that I might have gotten a patch from another source. So the diffstat I see after-the-merge is possibly different from the pre-merge diffstat simply due to merge issues. So then I usually take a look at "ok, why did that diffstat differ" and go "Ahh". In your case, when I looked at the diffstat, I couldn't for the life of me see how you would have gotten the diffstat you did, since I only saw a single patch with no merge issues. > Thanks for spotting it. > > I can fix that... I can also just live with it, knowing what your workflow is. The diffstat matching exactly just isn't that important - in fact, different versions of "diff" can give slightly different output anyway depending on diff algorithms even when they are looking at the exact same before/after state. There's not necessarily always only one way to generate a valid diff. So to me, the diffstat is more of a guide than a hard thing, and I want to see the rough outline, In fact, one reason I want to see it in pull requests is actually just that I want to get a feel for what changes even before I do the pull or merge, so it's not just a "match against what I get" thing. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-05-23 5:22 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-05-23 5:22 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 11 fixes, based on 444565650a5fe9c63ddf153e6198e31705dedeb2: David Hildenbrand <david@redhat.com>: device-dax: don't leak kernel memory to user space after unloading kmem Nick Desaulniers <ndesaulniers@google.com>: x86: bitops: fix build regression John Hubbard <jhubbard@nvidia.com>: rapidio: fix an error in get_user_pages_fast() error handling selftests/vm/.gitignore: add mremap_dontunmap selftests/vm/write_to_hugetlbfs.c: fix unused variable warning Marco Elver <elver@google.com>: kasan: disable branch tracing for core runtime Arnd Bergmann <arnd@arndb.de>: sh: include linux/time_types.h for sockios Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>: MAINTAINERS: update email address for Naoya Horiguchi Mike Rapoport <rppt@linux.ibm.com>: sparc32: use PUD rather than PGD to get PMD in srmmu_nocache_init() Uladzislau Rezki <uladzislau.rezki@sony.com>: z3fold: fix use-after-free when freeing handles Baoquan He <bhe@redhat.com>: MAINTAINERS: add files related to kdump MAINTAINERS | 7 ++++++- arch/sh/include/uapi/asm/sockios.h | 2 ++ arch/sparc/mm/srmmu.c | 2 +- arch/x86/include/asm/bitops.h | 12 ++++++------ drivers/dax/kmem.c | 14 +++++++++++--- drivers/rapidio/devices/rio_mport_cdev.c | 5 +++++ mm/kasan/Makefile | 16 ++++++++-------- mm/kasan/generic.c | 1 - mm/kasan/tags.c | 1 - mm/z3fold.c | 11 ++++++----- tools/testing/selftests/vm/.gitignore | 1 + tools/testing/selftests/vm/write_to_hugetlbfs.c | 2 -- 12 files changed, 46 insertions(+), 28 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-05-14 0:50 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-05-14 0:50 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 7 fixes, based on 24085f70a6e1b0cb647ec92623284641d8270637: Yafang Shao <laoar.shao@gmail.com>: mm, memcg: fix inconsistent oom event behavior Roman Penyaev <rpenyaev@suse.de>: epoll: call final ep_events_available() check under the lock Peter Xu <peterx@redhat.com>: mm/gup: fix fixup_user_fault() on multiple retries Brian Geffon <bgeffon@google.com>: userfaultfd: fix remap event with MREMAP_DONTUNMAP Vasily Averin <vvs@virtuozzo.com>: ipc/util.c: sysvipc_find_ipc() incorrectly updates position index Andrey Konovalov <andreyknvl@google.com>: kasan: consistently disable debugging features kasan: add missing functions declarations to kasan.h fs/eventpoll.c | 48 ++++++++++++++++++++++++++------------------- include/linux/memcontrol.h | 2 + ipc/util.c | 12 +++++------ mm/gup.c | 12 ++++++----- mm/kasan/Makefile | 15 +++++++++----- mm/kasan/kasan.h | 34 ++++++++++++++++++++++++++++++- mm/mremap.c | 2 - 7 files changed, 86 insertions(+), 39 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-05-08 1:35 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-05-08 1:35 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 14 fixes and one selftest to verify the ipc fixes herein. 15 patches, based on a811c1fa0a02c062555b54651065899437bacdbe: Oleg Nesterov <oleg@redhat.com>: ipc/mqueue.c: change __do_notify() to bypass check_kill_permission() Yafang Shao <laoar.shao@gmail.com>: mm, memcg: fix error return value of mem_cgroup_css_alloc() David Hildenbrand <david@redhat.com>: mm/page_alloc: fix watchdog soft lockups during set_zone_contiguous() Maciej Grochowski <maciej.grochowski@pm.me>: kernel/kcov.c: fix typos in kcov_remote_start documentation Ivan Delalande <colona@arista.com>: scripts/decodecode: fix trapping instruction formatting Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>: arch/x86/kvm/svm/sev.c: change flag passed to GUP fast in sev_pin_memory() Khazhismel Kumykov <khazhy@google.com>: eventpoll: fix missing wakeup for ovflist in ep_poll_callback Aymeric Agon-Rambosson <aymeric.agon@yandex.com>: scripts/gdb: repair rb_first() and rb_last() Waiman Long <longman@redhat.com>: mm/slub: fix incorrect interpretation of s->offset Filipe Manana <fdmanana@suse.com>: percpu: make pcpu_alloc() aware of current gfp context Roman Penyaev <rpenyaev@suse.de>: kselftests: introduce new epoll60 testcase for catching lost wakeups epoll: atomically remove wait entry on wake up Qiwu Chen <qiwuchen55@gmail.com>: mm/vmscan: remove unnecessary argument description of isolate_lru_pages() Kees Cook <keescook@chromium.org>: ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST Henry Willard <henry.willard@oracle.com>: mm: limit boost_watermark on small zones arch/x86/kvm/svm/sev.c | 2 fs/eventpoll.c | 61 ++-- ipc/mqueue.c | 34 +- kernel/kcov.c | 4 lib/Kconfig.ubsan | 15 - mm/memcontrol.c | 15 - mm/page_alloc.c | 9 mm/percpu.c | 14 mm/slub.c | 45 ++- mm/vmscan.c | 1 scripts/decodecode | 2 scripts/gdb/linux/rbtree.py | 4 tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 146 ++++++++++ tools/testing/selftests/wireguard/qemu/debug.config | 1 14 files changed, 275 insertions(+), 78 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-04-21 1:13 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-04-21 1:13 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 15 fixes, based on ae83d0b416db002fe95601e7f97f64b59514d936: Masahiro Yamada <masahiroy@kernel.org>: sh: fix build error in mm/init.c Kees Cook <keescook@chromium.org>: slub: avoid redzone when choosing freepointer location Peter Xu <peterx@redhat.com>: mm/userfaultfd: disable userfaultfd-wp on x86_32 Bartosz Golaszewski <bgolaszewski@baylibre.com>: MAINTAINERS: add an entry for kfifo Longpeng <longpeng2@huawei.com>: mm/hugetlb: fix a addressing exception caused by huge_pte_offset Michal Hocko <mhocko@suse.com>: mm, gup: return EINTR when gup is interrupted by fatal signals Christophe JAILLET <christophe.jaillet@wanadoo.fr>: checkpatch: fix a typo in the regex for $allocFunctions George Burgess IV <gbiv@google.com>: tools/build: tweak unused value workaround Muchun Song <songmuchun@bytedance.com>: mm/ksm: fix NULL pointer dereference when KSM zero page is enabled Hugh Dickins <hughd@google.com>: mm/shmem: fix build without THP Jann Horn <jannh@google.com>: vmalloc: fix remap_vmalloc_range() bounds checks Hugh Dickins <hughd@google.com>: shmem: fix possible deadlocks on shmlock_user_lock Yang Shi <yang.shi@linux.alibaba.com>: mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path Sudip Mukherjee <sudipm.mukherjee@gmail.com>: coredump: fix null pointer dereference on coredump Lucas Stach <l.stach@pengutronix.de>: tools/vm: fix cross-compile build MAINTAINERS | 7 +++++++ arch/sh/mm/init.c | 2 +- arch/x86/Kconfig | 2 +- fs/coredump.c | 2 ++ fs/proc/vmcore.c | 5 +++-- include/linux/vmalloc.h | 2 +- mm/gup.c | 2 +- mm/hugetlb.c | 14 ++++++++------ mm/ksm.c | 12 ++++++++++-- mm/shmem.c | 13 ++++++++----- mm/slub.c | 12 ++++++++++-- mm/vmalloc.c | 16 +++++++++++++--- samples/vfio-mdev/mdpy.c | 2 +- scripts/checkpatch.pl | 2 +- tools/build/feature/test-sync-compare-and-swap.c | 2 +- tools/vm/Makefile | 2 ++ 16 files changed, 70 insertions(+), 27 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-04-12 7:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-04-12 7:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm A straggler. This patch caused a lot of build errors on a lot of architectures for a long time, but Anshuman believes it's all fixed up now. 1 patch, based on GIT b032227c62939b5481bcd45442b36dfa263f4a7c. Anshuman Khandual <anshuman.khandual@arm.com>: mm/debug: add tests validating architecture page table helpers Documentation/features/debug/debug-vm-pgtable/arch-support.txt | 34 arch/arc/Kconfig | 1 arch/arm64/Kconfig | 1 arch/powerpc/Kconfig | 1 arch/s390/Kconfig | 1 arch/x86/Kconfig | 1 arch/x86/include/asm/pgtable_64.h | 6 include/linux/mmdebug.h | 5 init/main.c | 2 lib/Kconfig.debug | 26 mm/Makefile | 1 mm/debug_vm_pgtable.c | 392 ++++++++++ 12 files changed, 471 insertions(+) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-04-10 21:30 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-04-10 21:30 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm Almost all of the rest of MM. Various other things. 35 patches, based on c0cc271173b2e1c2d8d0ceaef14e4dfa79eefc0d. Subsystems affected by this patch series: hfs mm/memcg mm/slab-generic mm/slab mm/pagealloc mm/gup ocfs2 mm/hugetlb mm/pagemap mm/memremap kmod misc seqfile Subsystem: hfs Simon Gander <simon@tuxera.com>: hfsplus: fix crash and filesystem corruption when deleting files Subsystem: mm/memcg Jakub Kicinski <kuba@kernel.org>: mm, memcg: do not high throttle allocators based on wraparound Subsystem: mm/slab-generic Qiujun Huang <hqjagain@gmail.com>: mm, slab_common: fix a typo in comment "eariler"->"earlier" Subsystem: mm/slab Mauro Carvalho Chehab <mchehab+huawei@kernel.org>: docs: mm: slab.h: fix a broken cross-reference Subsystem: mm/pagealloc Randy Dunlap <rdunlap@infradead.org>: mm/page_alloc.c: fix kernel-doc warning Jason Yan <yanaijie@huawei.com>: mm/page_alloc: make pcpu_drain_mutex and pcpu_drain static Subsystem: mm/gup Miles Chen <miles.chen@mediatek.com>: mm/gup: fix null pointer dereference detected by coverity Subsystem: ocfs2 Changwei Ge <chge@linux.alibaba.com>: ocfs2: no need try to truncate file beyond i_size Subsystem: mm/hugetlb Aslan Bakirov <aslan@fb.com>: mm: cma: NUMA node interface Roman Gushchin <guro@fb.com>: mm: hugetlb: optionally allocate gigantic hugepages using cma Subsystem: mm/pagemap Jaewon Kim <jaewon31.kim@samsung.com>: mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area Arjun Roy <arjunroy@google.com>: mm/memory.c: refactor insert_page to prepare for batched-lock insert mm: bring sparc pte_index() semantics inline with other platforms mm: define pte_index as macro for x86 mm/memory.c: add vm_insert_pages() Anshuman Khandual <anshuman.khandual@arm.com>: mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS mm/vma: introduce VM_ACCESS_FLAGS mm/special: create generic fallbacks for pte_special() and pte_mkspecial() Subsystem: mm/memremap Logan Gunthorpe <logang@deltatee.com>: Patch series "Allow setting caching mode in arch_add_memory() for P2PDMA", v4: mm/memory_hotplug: drop the flags field from struct mhp_restrictions mm/memory_hotplug: rename mhp_restrictions to mhp_params x86/mm: thread pgprot_t through init_memory_mapping() x86/mm: introduce __set_memory_prot() powerpc/mm: thread pgprot_t through create_section_mapping() mm/memory_hotplug: add pgprot_t to mhp_params mm/memremap: set caching mode for PCI P2PDMA memory to WC Subsystem: kmod Eric Biggers <ebiggers@google.com>: Patch series "module autoloading fixes and cleanups", v5: kmod: make request_module() return an error when autoloading is disabled fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() docs: admin-guide: document the kernel.modprobe sysctl selftests: kmod: fix handling test numbers above 9 selftests: kmod: test disabling module autoloading Subsystem: misc Pali Rohár <pali@kernel.org>: change email address for Pali Rohár kbuild test robot <lkp@intel.com>: drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings Subsystem: seqfile Vasily Averin <vvs@virtuozzo.com>: Patch series "seq_file .next functions should increase position index": fs/seq_file.c: seq_read(): add info message about buggy .next functions kernel/gcov/fs.c: gcov_seq_next() should increase position index ipc/util.c: sysvipc_find_ipc() should increase position index Documentation/ABI/testing/sysfs-platform-dell-laptop | 8 Documentation/admin-guide/kernel-parameters.txt | 8 Documentation/admin-guide/sysctl/kernel.rst | 21 ++ MAINTAINERS | 16 - arch/alpha/include/asm/page.h | 3 arch/alpha/include/asm/pgtable.h | 2 arch/arc/include/asm/page.h | 2 arch/arm/include/asm/page.h | 4 arch/arm/include/asm/pgtable-2level.h | 2 arch/arm/include/asm/pgtable.h | 15 - arch/arm/mach-omap2/omap-secure.c | 2 arch/arm/mach-omap2/omap-secure.h | 2 arch/arm/mach-omap2/omap-smc.S | 2 arch/arm/mm/fault.c | 2 arch/arm/mm/mmu.c | 14 + arch/arm64/include/asm/page.h | 4 arch/arm64/mm/fault.c | 2 arch/arm64/mm/init.c | 6 arch/arm64/mm/mmu.c | 7 arch/c6x/include/asm/page.h | 5 arch/csky/include/asm/page.h | 3 arch/csky/include/asm/pgtable.h | 3 arch/h8300/include/asm/page.h | 2 arch/hexagon/include/asm/page.h | 3 arch/hexagon/include/asm/pgtable.h | 2 arch/ia64/include/asm/page.h | 5 arch/ia64/include/asm/pgtable.h | 2 arch/ia64/mm/init.c | 7 arch/m68k/include/asm/mcf_pgtable.h | 10 - arch/m68k/include/asm/motorola_pgtable.h | 2 arch/m68k/include/asm/page.h | 3 arch/m68k/include/asm/sun3_pgtable.h | 2 arch/microblaze/include/asm/page.h | 2 arch/microblaze/include/asm/pgtable.h | 4 arch/mips/include/asm/page.h | 5 arch/mips/include/asm/pgtable.h | 44 +++- arch/nds32/include/asm/page.h | 3 arch/nds32/include/asm/pgtable.h | 9 - arch/nds32/mm/fault.c | 2 arch/nios2/include/asm/page.h | 3 arch/nios2/include/asm/pgtable.h | 3 arch/openrisc/include/asm/page.h | 5 arch/openrisc/include/asm/pgtable.h | 2 arch/parisc/include/asm/page.h | 3 arch/parisc/include/asm/pgtable.h | 2 arch/powerpc/include/asm/book3s/64/hash.h | 3 arch/powerpc/include/asm/book3s/64/radix.h | 3 arch/powerpc/include/asm/page.h | 9 - arch/powerpc/include/asm/page_64.h | 7 arch/powerpc/include/asm/sparsemem.h | 3 arch/powerpc/mm/book3s64/hash_utils.c | 5 arch/powerpc/mm/book3s64/pgtable.c | 7 arch/powerpc/mm/book3s64/pkeys.c | 2 arch/powerpc/mm/book3s64/radix_pgtable.c | 18 +- arch/powerpc/mm/mem.c | 12 - arch/riscv/include/asm/page.h | 3 arch/s390/include/asm/page.h | 3 arch/s390/mm/fault.c | 2 arch/s390/mm/init.c | 9 - arch/sh/include/asm/page.h | 3 arch/sh/mm/init.c | 7 arch/sparc/include/asm/page_32.h | 3 arch/sparc/include/asm/page_64.h | 3 arch/sparc/include/asm/pgtable_32.h | 7 arch/sparc/include/asm/pgtable_64.h | 10 - arch/um/include/asm/pgtable.h | 10 - arch/unicore32/include/asm/page.h | 3 arch/unicore32/include/asm/pgtable.h | 3 arch/unicore32/mm/fault.c | 2 arch/x86/include/asm/page_types.h | 7 arch/x86/include/asm/pgtable.h | 6 arch/x86/include/asm/set_memory.h | 1 arch/x86/kernel/amd_gart_64.c | 3 arch/x86/kernel/setup.c | 4 arch/x86/mm/init.c | 9 - arch/x86/mm/init_32.c | 19 +- arch/x86/mm/init_64.c | 42 ++-- arch/x86/mm/mm_internal.h | 3 arch/x86/mm/pat/set_memory.c | 13 + arch/x86/mm/pkeys.c | 2 arch/x86/platform/uv/bios_uv.c | 3 arch/x86/um/asm/vm-flags.h | 10 - arch/xtensa/include/asm/page.h | 3 arch/xtensa/include/asm/pgtable.h | 3 drivers/char/hw_random/omap3-rom-rng.c | 4 drivers/dma/tegra20-apb-dma.c | 1 drivers/hwmon/dell-smm-hwmon.c | 4 drivers/platform/x86/dell-laptop.c | 4 drivers/platform/x86/dell-rbtn.c | 4 drivers/platform/x86/dell-rbtn.h | 2 drivers/platform/x86/dell-smbios-base.c | 4 drivers/platform/x86/dell-smbios-smm.c | 2 drivers/platform/x86/dell-smbios.h | 2 drivers/platform/x86/dell-smo8800.c | 2 drivers/platform/x86/dell-wmi.c | 4 drivers/power/supply/bq2415x_charger.c | 4 drivers/power/supply/bq27xxx_battery.c | 2 drivers/power/supply/isp1704_charger.c | 2 drivers/power/supply/rx51_battery.c | 4 drivers/staging/gasket/gasket_core.c | 2 fs/filesystems.c | 4 fs/hfsplus/attributes.c | 4 fs/ocfs2/alloc.c | 4 fs/seq_file.c | 7 fs/udf/ecma_167.h | 2 fs/udf/osta_udf.h | 2 include/linux/cma.h | 14 + include/linux/hugetlb.h | 12 + include/linux/memblock.h | 3 include/linux/memory_hotplug.h | 21 +- include/linux/mm.h | 34 +++ include/linux/power/bq2415x_charger.h | 2 include/linux/slab.h | 2 ipc/util.c | 2 kernel/gcov/fs.c | 2 kernel/kmod.c | 4 mm/cma.c | 16 + mm/gup.c | 3 mm/hugetlb.c | 109 ++++++++++++ mm/memblock.c | 2 mm/memcontrol.c | 3 mm/memory.c | 168 +++++++++++++++++-- mm/memory_hotplug.c | 13 - mm/memremap.c | 17 + mm/mmap.c | 4 mm/mprotect.c | 4 mm/page_alloc.c | 5 mm/slab_common.c | 2 tools/laptop/freefall/freefall.c | 2 tools/testing/selftests/kmod/kmod.sh | 43 ++++ 130 files changed, 710 insertions(+), 370 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-04-07 3:02 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-04-07 3:02 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits - a lot more of MM, quite a bit more yet to come. - various other subsystems 166 patches based on 7e63420847ae5f1036e4f7c42f0b3282e73efbc2. Subsystems affected by this patch series: mm/memcg mm/pagemap mm/vmalloc mm/pagealloc mm/migration mm/thp mm/ksm mm/madvise mm/virtio mm/userfaultfd mm/memory-hotplug mm/shmem mm/rmap mm/zswap mm/zsmalloc mm/cleanups procfs misc MAINTAINERS bitops lib checkpatch epoll binfmt kallsyms reiserfs kmod gcov kconfig kcov ubsan fault-injection ipc Subsystem: mm/memcg Chris Down <chris@chrisdown.name>: mm, memcg: bypass high reclaim iteration for cgroup hierarchy root Subsystem: mm/pagemap Li Xinhai <lixinhai.lxh@gmail.com>: Patch series "mm: Fix misuse of parent anon_vma in dup_mmap path": mm: don't prepare anon_vma if vma has VM_WIPEONFORK Revert "mm/rmap.c: reuse mergeable anon_vma as parent when fork" mm: set vm_next and vm_prev to NULL in vm_area_dup() Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/vma: Use all available wrappers when possible", v2: mm/vma: add missing VMA flag readable name for VM_SYNC mm/vma: make vma_is_accessible() available for general use mm/vma: replace all remaining open encodings with is_vm_hugetlb_page() mm/vma: replace all remaining open encodings with vma_is_anonymous() mm/vma: append unlikely() while testing VMA access permissions Subsystem: mm/vmalloc Qiujun Huang <hqjagain@gmail.com>: mm/vmalloc: fix a typo in comment Subsystem: mm/pagealloc Michal Hocko <mhocko@suse.com>: mm: make it clear that gfp reclaim modifiers are valid only for sleepable allocations Subsystem: mm/migration Wei Yang <richardw.yang@linux.intel.com>: Patch series "cleanup on do_pages_move()", v5: mm/migrate.c: no need to check for i > start in do_pages_move() mm/migrate.c: wrap do_move_pages_to_node() and store_status() mm/migrate.c: check pagelist in move_pages_and_store_status() mm/migrate.c: unify "not queued for migration" handling in do_pages_move() Yang Shi <yang.shi@linux.alibaba.com>: mm/migrate.c: migrate PG_readahead flag Subsystem: mm/thp David Rientjes <rientjes@google.com>: mm, shmem: add vmstat for hugepage fallback mm, thp: track fallbacks due to failed memcg charges separately "Matthew Wilcox (Oracle)" <willy@infradead.org>: include/linux/pagemap.h: optimise find_subpage for !THP mm: remove CONFIG_TRANSPARENT_HUGE_PAGECACHE Subsystem: mm/ksm Li Chen <chenli@uniontech.com>: mm/ksm.c: update get_user_pages() argument in comment Subsystem: mm/madvise Huang Ying <ying.huang@intel.com>: mm: code cleanup for MADV_FREE Subsystem: mm/virtio Alexander Duyck <alexander.h.duyck@linux.intel.com>: Patch series "mm / virtio: Provide support for free page reporting", v17: mm: adjust shuffle code to allow for future coalescing mm: use zone and order instead of free area in free_list manipulators mm: add function __putback_isolated_page mm: introduce Reported pages virtio-balloon: pull page poisoning config out of free page hinting virtio-balloon: add support for providing free page reports to host mm/page_reporting: rotate reported pages to the tail of the list mm/page_reporting: add budget limit on how many pages can be reported per pass mm/page_reporting: add free page reporting documentation David Hildenbrand <david@redhat.com>: virtio-balloon: switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM Subsystem: mm/userfaultfd Shaohua Li <shli@fb.com>: Patch series "userfaultfd: write protection support", v6: userfaultfd: wp: add helper for writeprotect check Andrea Arcangeli <aarcange@redhat.com>: userfaultfd: wp: hook userfault handler to write protection fault userfaultfd: wp: add WP pagetable tracking to x86 userfaultfd: wp: userfaultfd_pte/huge_pmd_wp() helpers userfaultfd: wp: add UFFDIO_COPY_MODE_WP Peter Xu <peterx@redhat.com>: mm: merge parameters for change_protection() userfaultfd: wp: apply _PAGE_UFFD_WP bit userfaultfd: wp: drop _PAGE_UFFD_WP properly when fork userfaultfd: wp: add pmd_swp_*uffd_wp() helpers userfaultfd: wp: support swap and page migration khugepaged: skip collapse if uffd-wp detected Shaohua Li <shli@fb.com>: userfaultfd: wp: support write protection for userfault vma range Andrea Arcangeli <aarcange@redhat.com>: userfaultfd: wp: add the writeprotect API to userfaultfd ioctl Shaohua Li <shli@fb.com>: userfaultfd: wp: enabled write protection in userfaultfd API Peter Xu <peterx@redhat.com>: userfaultfd: wp: don't wake up when doing write protect Martin Cracauer <cracauer@cons.org>: userfaultfd: wp: UFFDIO_REGISTER_MODE_WP documentation update Peter Xu <peterx@redhat.com>: userfaultfd: wp: declare _UFFDIO_WRITEPROTECT conditionally userfaultfd: selftests: refactor statistics userfaultfd: selftests: add write-protect test Subsystem: mm/memory-hotplug David Hildenbrand <david@redhat.com>: Patch series "mm: drop superfluous section checks when onlining/offlining": drivers/base/memory.c: drop section_count drivers/base/memory.c: drop pages_correctly_probed() mm/page_ext.c: drop pfn_present() check when onlining Baoquan He <bhe@redhat.com>: mm/memory_hotplug.c: only respect mem= parameter during boot stage David Hildenbrand <david@redhat.com>: mm/memory_hotplug.c: simplify calculation of number of pages in __remove_pages() mm/memory_hotplug.c: cleanup __add_pages() Baoquan He <bhe@redhat.com>: Patch series "mm/hotplug: Only use subsection map for VMEMMAP", v4: mm/sparse.c: introduce new function fill_subsection_map() mm/sparse.c: introduce a new function clear_subsection_map() mm/sparse.c: only use subsection map in VMEMMAP case mm/sparse.c: add note about only VMEMMAP supporting sub-section hotplug mm/sparse.c: move subsection_map related functions together David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: allow to specify a default online_type", v3: drivers/base/memory: rename MMOP_ONLINE_KEEP to MMOP_ONLINE drivers/base/memory: map MMOP_OFFLINE to 0 drivers/base/memory: store mapping between MMOP_* and string in an array powernv/memtrace: always online added memory blocks hv_balloon: don't check for memhp_auto_online manually mm/memory_hotplug: unexport memhp_auto_online mm/memory_hotplug: convert memhp_auto_online to store an online_type mm/memory_hotplug: allow to specify a default online_type chenqiwu <chenqiwu@xiaomi.com>: mm/memory_hotplug.c: use __pfn_to_section() instead of open-coding Subsystem: mm/shmem Kees Cook <keescook@chromium.org>: mm/shmem.c: distribute switch variables for initialization Mateusz Nosek <mateusznosek0@gmail.com>: mm/shmem.c: clean code by removing unnecessary assignment Hugh Dickins <hughd@google.com>: mm: huge tmpfs: try to split_huge_page() when punching hole Subsystem: mm/rmap Palmer Dabbelt <palmerdabbelt@google.com>: mm: prevent a warning when casting void* -> enum Subsystem: mm/zswap "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>: mm/zswap: allow setting default status, compressor and allocator in Kconfig Subsystem: mm/zsmalloc Subsystem: mm/cleanups Jules Irenge <jbi.octave@gmail.com>: mm/compaction: add missing annotation for compact_lock_irqsave mm/hugetlb: add missing annotation for gather_surplus_pages() mm/mempolicy: add missing annotation for queue_pages_pmd() mm/slub: add missing annotation for get_map() mm/slub: add missing annotation for put_map() mm/zsmalloc: add missing annotation for migrate_read_lock() mm/zsmalloc: add missing annotation for migrate_read_unlock() mm/zsmalloc: add missing annotation for pin_tag() mm/zsmalloc: add missing annotation for unpin_tag() chenqiwu <chenqiwu@xiaomi.com>: mm: fix ambiguous comments for better code readability Mateusz Nosek <mateusznosek0@gmail.com>: mm/mm_init.c: clean code. Use BUILD_BUG_ON when comparing compile time constant Joe Perches <joe@perches.com>: mm: use fallthrough; Steven Price <steven.price@arm.com>: include/linux/swapops.h: correct guards for non_swap_entry() Ira Weiny <ira.weiny@intel.com>: include/linux/memremap.h: remove stale comments Mateusz Nosek <mateusznosek0@gmail.com>: mm/dmapool.c: micro-optimisation remove unnecessary branch Waiman Long <longman@redhat.com>: mm: remove dummy struct bootmem_data/bootmem_data_t Subsystem: procfs Jules Irenge <jbi.octave@gmail.com>: fs/proc/inode.c: annotate close_pdeo() for sparse Alexey Dobriyan <adobriyan@gmail.com>: proc: faster open/read/close with "permanent" files proc: speed up /proc/*/statm "Matthew Wilcox (Oracle)" <willy@infradead.org>: proc: inline vma_stop into m_stop proc: remove m_cache_vma proc: use ppos instead of m->version seq_file: remove m->version proc: inline m_next_vma into m_next Subsystem: misc Michal Simek <michal.simek@xilinx.com>: asm-generic: fix unistd_32.h generation format Nathan Chancellor <natechancellor@gmail.com>: kernel/extable.c: use address-of operator on section symbols Masahiro Yamada <masahiroy@kernel.org>: sparc,x86: vdso: remove meaningless undefining CONFIG_OPTIMIZE_INLINING compiler: remove CONFIG_OPTIMIZE_INLINING entirely Vegard Nossum <vegard.nossum@oracle.com>: compiler.h: fix error in BUILD_BUG_ON() reporting Subsystem: MAINTAINERS Joe Perches <joe@perches.com>: MAINTAINERS: list the section entries in the preferred order Subsystem: bitops Josh Poimboeuf <jpoimboe@redhat.com>: bitops: always inline sign extension helpers Subsystem: lib Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: lib/test_lockup: test module to generate lockups Colin Ian King <colin.king@canonical.com>: lib/test_lockup.c: fix spelling mistake "iteraions" -> "iterations" Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: lib/test_lockup.c: add parameters for locking generic vfs locks "Gustavo A. R. Silva" <gustavo@embeddedor.com>: lib/bch.c: replace zero-length array with flexible-array member lib/ts_bm.c: replace zero-length array with flexible-array member lib/ts_fsm.c: replace zero-length array with flexible-array member lib/ts_kmp.c: replace zero-length array with flexible-array member Geert Uytterhoeven <geert+renesas@glider.be>: lib/scatterlist: fix sg_copy_buffer() kerneldoc Kees Cook <keescook@chromium.org>: lib: test_stackinit.c: XFAIL switch variable init tests Alexander Potapenko <glider@google.com>: lib/stackdepot.c: check depot_index before accessing the stack slab lib/stackdepot.c: fix a condition in stack_depot_fetch() lib/stackdepot.c: build with -fno-builtin kasan: stackdepot: move filter_irq_stacks() to stackdepot.c Qian Cai <cai@lca.pw>: percpu_counter: fix a data race at vm_committed_as Andy Shevchenko <andriy.shevchenko@linux.intel.com>: lib/test_bitmap.c: make use of EXP2_IN_BITS chenqiwu <chenqiwu@xiaomi.com>: lib/rbtree: fix coding style of assignments Dan Carpenter <dan.carpenter@oracle.com>: lib/test_kmod.c: remove a NULL test Rikard Falkeborn <rikard.falkeborn@gmail.com>: linux/bits.h: add compile time sanity check of GENMASK inputs Chris Wilson <chris@chris-wilson.co.uk>: lib/list: prevent compiler reloads inside 'safe' list iteration Nathan Chancellor <natechancellor@gmail.com>: lib/dynamic_debug.c: use address-of operator on section symbols Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: remove email address comment from email address comparisons Lubomir Rintel <lkundrak@v3.sk>: checkpatch: check SPDX tags in YAML files John Hubbard <jhubbard@nvidia.com>: checkpatch: support "base-commit:" format Joe Perches <joe@perches.com>: checkpatch: prefer fallthrough; over fallthrough comments Antonio Borneo <borneo.antonio@gmail.com>: checkpatch: fix minor typo and mixed space+tab in indentation checkpatch: fix multiple const * types checkpatch: add command-line option for TAB size Joe Perches <joe@perches.com>: checkpatch: improve Gerrit Change-Id: test Lubomir Rintel <lkundrak@v3.sk>: checkpatch: check proper licensing of Devicetree bindings Joe Perches <joe@perches.com>: checkpatch: avoid warning about uninitialized_var() Subsystem: epoll Roman Penyaev <rpenyaev@suse.de>: kselftest: introduce new epoll test case Jason Baron <jbaron@akamai.com>: fs/epoll: make nesting accounting safe for -rt kernel Subsystem: binfmt Alexey Dobriyan <adobriyan@gmail.com>: fs/binfmt_elf.c: delete "loc" variable fs/binfmt_elf.c: allocate less for static executable fs/binfmt_elf.c: don't free interpreter's ELF pheaders on common path Subsystem: kallsyms Will Deacon <will@kernel.org>: Patch series "Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()": samples/hw_breakpoint: drop HW_BREAKPOINT_R when reporting writes samples/hw_breakpoint: drop use of kallsyms_lookup_name() kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol() Subsystem: reiserfs Colin Ian King <colin.king@canonical.com>: reiserfs: clean up several indentation issues Subsystem: kmod Qiujun Huang <hqjagain@gmail.com>: kernel/kmod.c: fix a typo "assuems" -> "assumes" Subsystem: gcov "Gustavo A. R. Silva" <gustavo@embeddedor.com>: gcov: gcc_4_7: replace zero-length array with flexible-array member gcov: gcc_3_4: replace zero-length array with flexible-array member kernel/gcov/fs.c: replace zero-length array with flexible-array member Subsystem: kconfig Krzysztof Kozlowski <krzk@kernel.org>: init/Kconfig: clean up ANON_INODES and old IO schedulers options Subsystem: kcov Andrey Konovalov <andreyknvl@google.com>: Patch series "kcov: collect coverage from usb soft interrupts", v4: kcov: cleanup debug messages kcov: fix potential use-after-free in kcov_remote_start kcov: move t->kcov assignments into kcov_start/stop kcov: move t->kcov_sequence assignment kcov: use t->kcov_mode as enabled indicator kcov: collect coverage from interrupts usb: core: kcov: collect coverage from usb complete callback Subsystem: ubsan Kees Cook <keescook@chromium.org>: Patch series "ubsan: Split out bounds checker", v5: ubsan: add trap instrumentation option ubsan: split "bounds" checker from other options drivers/misc/lkdtm/bugs.c: add arithmetic overflow and array bounds checks ubsan: check panic_on_warn kasan: unset panic_on_warn before calling panic() ubsan: include bug type in report header Subsystem: fault-injection Qiujun Huang <hqjagain@gmail.com>: lib/Kconfig.debug: fix a typo "capabilitiy" -> "capability" Subsystem: ipc Somala Swaraj <somalaswaraj@gmail.com>: ipc/mqueue.c: fix a brace coding style issue Jason Yan <yanaijie@huawei.com>: ipc/shm.c: make compat_ksys_shmctl() static Documentation/admin-guide/kernel-parameters.txt | 13 Documentation/admin-guide/mm/transhuge.rst | 14 Documentation/admin-guide/mm/userfaultfd.rst | 51 Documentation/dev-tools/kcov.rst | 17 Documentation/vm/free_page_reporting.rst | 41 Documentation/vm/zswap.rst | 20 MAINTAINERS | 35 arch/alpha/include/asm/mmzone.h | 2 arch/alpha/kernel/syscalls/syscallhdr.sh | 2 arch/csky/mm/fault.c | 4 arch/ia64/kernel/syscalls/syscallhdr.sh | 2 arch/ia64/kernel/vmlinux.lds.S | 2 arch/m68k/mm/fault.c | 4 arch/microblaze/kernel/syscalls/syscallhdr.sh | 2 arch/mips/kernel/syscalls/syscallhdr.sh | 3 arch/mips/mm/fault.c | 4 arch/nds32/kernel/vmlinux.lds.S | 1 arch/parisc/kernel/syscalls/syscallhdr.sh | 2 arch/powerpc/kernel/syscalls/syscallhdr.sh | 3 arch/powerpc/kvm/e500_mmu_host.c | 2 arch/powerpc/mm/fault.c | 2 arch/powerpc/platforms/powernv/memtrace.c | 14 arch/sh/kernel/syscalls/syscallhdr.sh | 2 arch/sh/mm/fault.c | 2 arch/sparc/kernel/syscalls/syscallhdr.sh | 2 arch/sparc/vdso/vdso32/vclock_gettime.c | 4 arch/x86/Kconfig | 1 arch/x86/configs/i386_defconfig | 1 arch/x86/configs/x86_64_defconfig | 1 arch/x86/entry/vdso/vdso32/vclock_gettime.c | 4 arch/x86/include/asm/pgtable.h | 67 + arch/x86/include/asm/pgtable_64.h | 8 arch/x86/include/asm/pgtable_types.h | 12 arch/x86/mm/fault.c | 2 arch/xtensa/kernel/syscalls/syscallhdr.sh | 2 drivers/base/memory.c | 138 -- drivers/hv/hv_balloon.c | 25 drivers/misc/lkdtm/bugs.c | 75 + drivers/misc/lkdtm/core.c | 3 drivers/misc/lkdtm/lkdtm.h | 3 drivers/usb/core/hcd.c | 3 drivers/virtio/Kconfig | 1 drivers/virtio/virtio_balloon.c | 190 ++- fs/binfmt_elf.c | 56 fs/eventpoll.c | 64 - fs/proc/array.c | 39 fs/proc/cpuinfo.c | 1 fs/proc/generic.c | 31 fs/proc/inode.c | 188 ++- fs/proc/internal.h | 6 fs/proc/kmsg.c | 1 fs/proc/stat.c | 1 fs/proc/task_mmu.c | 97 - fs/reiserfs/do_balan.c | 2 fs/reiserfs/ioctl.c | 11 fs/reiserfs/namei.c | 10 fs/seq_file.c | 28 fs/userfaultfd.c | 116 + include/asm-generic/pgtable.h | 1 include/asm-generic/pgtable_uffd.h | 66 + include/asm-generic/tlb.h | 3 include/linux/bitops.h | 4 include/linux/bits.h | 22 include/linux/compiler.h | 2 include/linux/compiler_types.h | 11 include/linux/gfp.h | 2 include/linux/huge_mm.h | 2 include/linux/list.h | 50 include/linux/memory.h | 1 include/linux/memory_hotplug.h | 13 include/linux/memremap.h | 2 include/linux/mm.h | 25 include/linux/mm_inline.h | 15 include/linux/mm_types.h | 4 include/linux/mmzone.h | 47 include/linux/page-flags.h | 16 include/linux/page_reporting.h | 26 include/linux/pagemap.h | 4 include/linux/percpu_counter.h | 4 include/linux/proc_fs.h | 17 include/linux/sched.h | 3 include/linux/seq_file.h | 1 include/linux/shmem_fs.h | 10 include/linux/stackdepot.h | 2 include/linux/swapops.h | 5 include/linux/userfaultfd_k.h | 42 include/linux/vm_event_item.h | 5 include/trace/events/huge_memory.h | 1 include/trace/events/mmflags.h | 1 include/trace/events/vmscan.h | 2 include/uapi/linux/userfaultfd.h | 40 include/uapi/linux/virtio_balloon.h | 1 init/Kconfig | 8 ipc/mqueue.c | 5 ipc/shm.c | 2 ipc/util.c | 1 kernel/configs/tiny.config | 1 kernel/events/core.c | 3 kernel/extable.c | 3 kernel/fork.c | 10 kernel/gcov/fs.c | 2 kernel/gcov/gcc_3_4.c | 6 kernel/gcov/gcc_4_7.c | 2 kernel/kallsyms.c | 2 kernel/kcov.c | 282 +++- kernel/kmod.c | 2 kernel/module.c | 1 kernel/sched/fair.c | 2 lib/Kconfig.debug | 35 lib/Kconfig.ubsan | 51 lib/Makefile | 8 lib/bch.c | 2 lib/dynamic_debug.c | 2 lib/rbtree.c | 4 lib/scatterlist.c | 2 lib/stackdepot.c | 39 lib/test_bitmap.c | 2 lib/test_kmod.c | 2 lib/test_lockup.c | 601 +++++++++- lib/test_stackinit.c | 28 lib/ts_bm.c | 2 lib/ts_fsm.c | 2 lib/ts_kmp.c | 2 lib/ubsan.c | 47 mm/Kconfig | 135 ++ mm/Makefile | 1 mm/compaction.c | 3 mm/dmapool.c | 4 mm/filemap.c | 14 mm/gup.c | 9 mm/huge_memory.c | 36 mm/hugetlb.c | 1 mm/hugetlb_cgroup.c | 6 mm/internal.h | 2 mm/kasan/common.c | 23 mm/kasan/report.c | 10 mm/khugepaged.c | 39 mm/ksm.c | 5 mm/list_lru.c | 2 mm/memcontrol.c | 5 mm/memory-failure.c | 2 mm/memory.c | 42 mm/memory_hotplug.c | 53 mm/mempolicy.c | 11 mm/migrate.c | 122 +- mm/mm_init.c | 2 mm/mmap.c | 10 mm/mprotect.c | 76 - mm/page_alloc.c | 174 ++ mm/page_ext.c | 5 mm/page_isolation.c | 6 mm/page_reporting.c | 384 ++++++ mm/page_reporting.h | 54 mm/rmap.c | 23 mm/shmem.c | 168 +- mm/shuffle.c | 12 mm/shuffle.h | 6 mm/slab_common.c | 1 mm/slub.c | 3 mm/sparse.c | 236 ++- mm/swap.c | 20 mm/swapfile.c | 1 mm/userfaultfd.c | 98 + mm/vmalloc.c | 2 mm/vmscan.c | 12 mm/vmstat.c | 3 mm/zsmalloc.c | 10 mm/zswap.c | 24 samples/hw_breakpoint/data_breakpoint.c | 11 scripts/Makefile.ubsan | 16 scripts/checkpatch.pl | 155 +- tools/lib/rbtree.c | 4 tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 67 + tools/testing/selftests/vm/userfaultfd.c | 233 +++ 174 files changed, 3990 insertions(+), 1399 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-04-02 4:01 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-04-02 4:01 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits A large amount of MM, plenty more to come. 155 patches, based on GIT 1a323ea5356edbb3073dc59d51b9e6b86908857d Subsystems affected by this patch series: tools kthread kbuild scripts ocfs2 vfs mm/slub mm/kmemleak mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/mremap mm/sparsemem mm/kasan mm/pagealloc mm/vmscan mm/compaction mm/mempolicy mm/hugetlbfs mm/hugetlb Subsystem: tools David Ahern <dsahern@kernel.org>: tools/accounting/getdelays.c: fix netlink attribute length Subsystem: kthread Petr Mladek <pmladek@suse.com>: kthread: mark timer used by delayed kthread works as IRQ safe Subsystem: kbuild Masahiro Yamada <masahiroy@kernel.org>: asm-generic: make more kernel-space headers mandatory Subsystem: scripts Jonathan Neuschäfer <j.neuschaefer@gmx.net>: scripts/spelling.txt: add syfs/sysfs pattern Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ocfs2 Alex Shi <alex.shi@linux.alibaba.com>: ocfs2: remove FS_OCFS2_NM ocfs2: remove unused macros ocfs2: use OCFS2_SEC_BITS in macro ocfs2: remove dlm_lock_is_remote wangyan <wangyan122@huawei.com>: ocfs2: there is no need to log twice in several functions ocfs2: correct annotation from "l_next_rec" to "l_next_free_rec" Alex Shi <alex.shi@linux.alibaba.com>: ocfs2: remove useless err Jules Irenge <jbi.octave@gmail.com>: ocfs2: Add missing annotations for ocfs2_refcount_cache_lock() and ocfs2_refcount_cache_unlock() "Gustavo A. R. Silva" <gustavo@embeddedor.com>: ocfs2: replace zero-length array with flexible-array member ocfs2: cluster: replace zero-length array with flexible-array member ocfs2: dlm: replace zero-length array with flexible-array member ocfs2: ocfs2_fs.h: replace zero-length array with flexible-array member wangjian <wangjian161@huawei.com>: ocfs2: roll back the reference count modification of the parent directory if an error occurs Takashi Iwai <tiwai@suse.de>: ocfs2: use scnprintf() for avoiding potential buffer overflow "Matthew Wilcox (Oracle)" <willy@infradead.org>: ocfs2: use memalloc_nofs_save instead of memalloc_noio_save Subsystem: vfs Kees Cook <keescook@chromium.org>: fs_parse: Remove pr_notice() about each validation Subsystem: mm/slub chenqiwu <chenqiwu@xiaomi.com>: mm/slub.c: replace cpu_slab->partial with wrapped APIs mm/slub.c: replace kmem_cache->cpu_partial with wrapped APIs Kees Cook <keescook@chromium.org>: slub: improve bit diffusion for freelist ptr obfuscation slub: relocate freelist pointer to middle of object Vlastimil Babka <vbabka@suse.cz>: Revert "topology: add support for node_to_mem_node() to determine the fallback node" Subsystem: mm/kmemleak Nathan Chancellor <natechancellor@gmail.com>: mm/kmemleak.c: use address-of operator on section symbols Qian Cai <cai@lca.pw>: mm/Makefile: disable KCSAN for kmemleak Subsystem: mm/pagecache Jan Kara <jack@suse.cz>: mm/filemap.c: don't bother dropping mmap_sem for zero size readahead Mauricio Faria de Oliveira <mfo@canonical.com>: mm/page-writeback.c: write_cache_pages(): deduplicate identical checks Xianting Tian <xianting_tian@126.com>: mm/filemap.c: clear page error before actual read Souptick Joarder <jrdr.linux@gmail.com>: mm/filemap.c: remove unused argument from shrink_readahead_size_eio() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm/filemap.c: use vm_fault error code directly include/linux/pagemap.h: rename arguments to find_subpage mm/page-writeback.c: use VM_BUG_ON_PAGE in clear_page_dirty_for_io mm/filemap.c: unexport find_get_entry mm/filemap.c: rewrite pagecache_get_page documentation Subsystem: mm/gup John Hubbard <jhubbard@nvidia.com>: Patch series "mm/gup: track FOLL_PIN pages", v6: mm/gup: split get_user_pages_remote() into two routines mm/gup: pass a flags arg to __gup_device_* functions mm: introduce page_ref_sub_return() mm/gup: pass gup flags to two more routines mm/gup: require FOLL_GET for get_user_pages_fast() mm/gup: track FOLL_PIN pages mm/gup: page->hpage_pinned_refcount: exact pin counts for huge pages mm/gup: /proc/vmstat: pin_user_pages (FOLL_PIN) reporting mm/gup_benchmark: support pin_user_pages() and related calls selftests/vm: run_vmtests: invoke gup_benchmark with basic FOLL_PIN coverage "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: improve dump_page() for compound pages John Hubbard <jhubbard@nvidia.com>: mm: dump_page(): additional diagnostics for huge pinned pages Claudio Imbrenda <imbrenda@linux.ibm.com>: mm/gup/writeback: add callbacks for inaccessible pages Pingfan Liu <kernelfans@gmail.com>: mm/gup: rename nr as nr_pinned in get_user_pages_fast() mm/gup: fix omission of check on FOLL_LONGTERM in gup fast path Subsystem: mm/swap Chen Wandun <chenwandun@huawei.com>: mm/swapfile.c: fix comments for swapcache_prepare Wei Yang <richardw.yang@linux.intel.com>: mm/swap.c: not necessary to export __pagevec_lru_add() Qian Cai <cai@lca.pw>: mm/swapfile: fix data races in try_to_unuse() Wei Yang <richard.weiyang@linux.alibaba.com>: mm/swap_slots.c: assign|reset cache slot by value directly Yang Shi <yang.shi@linux.alibaba.com>: mm: swap: make page_evictable() inline mm: swap: use smp_mb__after_atomic() to order LRU bit set Wei Yang <richard.weiyang@gmail.com>: mm/swap_state.c: use the same way to count page in [add_to|delete_from]_swap_cache Subsystem: mm/memcg Yafang Shao <laoar.shao@gmail.com>: mm, memcg: fix build error around the usage of kmem_caches Kirill Tkhai <ktkhai@virtuozzo.com>: mm/memcontrol.c: allocate shrinker_map on appropriate NUMA node Roman Gushchin <guro@fb.com>: mm: memcg/slab: use mem_cgroup_from_obj() Patch series "mm: memcg: kmem API cleanup", v2: mm: kmem: cleanup (__)memcg_kmem_charge_memcg() arguments mm: kmem: cleanup memcg_kmem_uncharge_memcg() arguments mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page() mm: kmem: switch to nr_pages in (__)memcg_kmem_charge_memcg() mm: memcg/slab: cache page number in memcg_(un)charge_slab() mm: kmem: rename (__)memcg_kmem_(un)charge_memcg() to __memcg_kmem_(un)charge() Johannes Weiner <hannes@cmpxchg.org>: Patch series "mm: memcontrol: recursive memory.low protection", v3: mm: memcontrol: fix memory.low proportional distribution mm: memcontrol: clean up and document effective low/min calculations mm: memcontrol: recursive memory.low protection Shakeel Butt <shakeelb@google.com>: memcg: css_tryget_online cleanups Vincenzo Frascino <vincenzo.frascino@arm.com>: mm/memcontrol.c: make mem_cgroup_id_get_many() __maybe_unused Chris Down <chris@chrisdown.name>: mm, memcg: prevent memory.high load/store tearing mm, memcg: prevent memory.max load tearing mm, memcg: prevent memory.low load/store tearing mm, memcg: prevent memory.min load/store tearing mm, memcg: prevent memory.swap.max load tearing mm, memcg: prevent mem_cgroup_protected store tearing Roman Gushchin <guro@fb.com>: mm: memcg: make memory.oom.group tolerable to task migration Subsystem: mm/pagemap Thomas Hellstrom <thellstrom@vmware.com>: mm/mapping_dirty_helpers: Update huge page-table entry callbacks Anshuman Khandual <anshuman.khandual@arm.com>: Patch series "mm/vma: some more minor changes", v2: mm/vma: move VM_NO_KHUGEPAGED into generic header mm/vma: make vma_is_foreign() available for general use mm/vma: make is_vma_temporary_stack() available for general use "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: add pagemap.h to the fine documentation Peter Xu <peterx@redhat.com>: Patch series "mm: Page fault enhancements", v6: mm/gup: rename "nonblocking" to "locked" where proper mm/gup: fix __get_user_pages() on fault retry of hugetlb mm: introduce fault_signal_pending() x86/mm: use helper fault_signal_pending() arc/mm: use helper fault_signal_pending() arm64/mm: use helper fault_signal_pending() powerpc/mm: use helper fault_signal_pending() sh/mm: use helper fault_signal_pending() mm: return faster for non-fatal signals in user mode faults userfaultfd: don't retake mmap_sem to emulate NOPAGE mm: introduce FAULT_FLAG_DEFAULT mm: introduce FAULT_FLAG_INTERRUPTIBLE mm: allow VM_FAULT_RETRY for multiple times mm/gup: allow VM_FAULT_RETRY for multiple times mm/gup: allow to react to fatal signals mm/userfaultfd: honor FAULT_FLAG_KILLABLE in fault path WANG Wenhu <wenhu.wang@vivo.com>: mm: clarify a confusing comment for remap_pfn_range() Wang Wenhu <wenhu.wang@vivo.com>: mm/memory.c: clarify a confusing comment for vm_iomap_memory Jaewon Kim <jaewon31.kim@samsung.com>: Patch series "mm: mmap: add mmap trace point", v3: mmap: remove inline of vm_unmapped_area mm: mmap: add trace point of vm_unmapped_area Subsystem: mm/mremap Brian Geffon <bgeffon@google.com>: mm/mremap: add MREMAP_DONTUNMAP to mremap() selftests: add MREMAP_DONTUNMAP selftest Subsystem: mm/sparsemem Wei Yang <richardw.yang@linux.intel.com>: mm/sparsemem: get address to page struct instead of address to pfn Pingfan Liu <kernelfans@gmail.com>: mm/sparse: rename pfn_present() to pfn_in_present_section() Baoquan He <bhe@redhat.com>: mm/sparse.c: use kvmalloc/kvfree to alloc/free memmap for the classic sparse mm/sparse.c: allocate memmap preferring the given node Subsystem: mm/kasan Walter Wu <walter-zh.wu@mediatek.com>: Patch series "fix the missing underflow in memory operation function", v4: kasan: detect negative size in memory operation function kasan: add test for invalid size in memmove Subsystem: mm/pagealloc Joel Savitz <jsavitz@redhat.com>: mm/page_alloc: increase default min_free_kbytes bound Mateusz Nosek <mateusznosek0@gmail.com>: mm, pagealloc: micro-optimisation: save two branches on hot page allocation path chenqiwu <chenqiwu@xiaomi.com>: mm/page_alloc.c: use free_area_empty() instead of open-coding Mateusz Nosek <mateusznosek0@gmail.com>: mm/page_alloc.c: micro-optimisation Remove unnecessary branch chenqiwu <chenqiwu@xiaomi.com>: mm/page_alloc: simplify page_is_buddy() for better code readability Subsystem: mm/vmscan Yang Shi <yang.shi@linux.alibaba.com>: mm: vmpressure: don't need call kfree if kstrndup fails mm: vmpressure: use mem_cgroup_is_root API mm: vmscan: replace open codings to NUMA_NO_NODE Wei Yang <richardw.yang@linux.intel.com>: mm/vmscan.c: remove cpu online notification for now Qian Cai <cai@lca.pw>: mm/vmscan.c: fix data races using kswapd_classzone_idx Mateusz Nosek <mateusznosek0@gmail.com>: mm/vmscan.c: Clean code by removing unnecessary assignment Kirill Tkhai <ktkhai@virtuozzo.com>: mm/vmscan.c: make may_enter_fs bool in shrink_page_list() Mateusz Nosek <mateusznosek0@gmail.com>: mm/vmscan.c: do_try_to_free_pages(): clean code by removing unnecessary assignment Michal Hocko <mhocko@suse.com>: selftests: vm: drop dependencies on page flags from mlock2 tests Subsystem: mm/compaction Rik van Riel <riel@surriel.com>: Patch series "fix THP migration for CMA allocations", v2: mm,compaction,cma: add alloc_contig flag to compact_control mm,thp,compaction,cma: allow THP migration for CMA allocations Vlastimil Babka <vbabka@suse.cz>: mm, compaction: fully assume capture is not NULL in compact_zone_order() Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/compaction: really limit compact_unevictable_allowed to 0 and 1 mm/compaction: Disable compact_unevictable_allowed on RT Mateusz Nosek <mateusznosek0@gmail.com>: mm/compaction.c: clean code by removing unnecessary assignment Subsystem: mm/mempolicy Li Xinhai <lixinhai.lxh@gmail.com>: mm/mempolicy: support MPOL_MF_STRICT for huge page mapping mm/mempolicy: check hugepage migration is supported by arch in vma_migratable() Yang Shi <yang.shi@linux.alibaba.com>: mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk() Randy Dunlap <rdunlap@infradead.org>: mm: mempolicy: require at least one nodeid for MPOL_PREFERRED Colin Ian King <colin.king@canonical.com>: mm/memblock.c: remove redundant assignment to variable max_addr Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: Patch series "hugetlbfs: use i_mmap_rwsem for more synchronization", v2: hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race Subsystem: mm/hugetlb Mina Almasry <almasrymina@google.com>: hugetlb_cgroup: add hugetlb_cgroup reservation counter hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations mm/hugetlb_cgroup: fix hugetlb_cgroup migration hugetlb_cgroup: add reservation accounting for private mappings hugetlb: disable region_add file_region coalescing hugetlb_cgroup: add accounting for shared mappings hugetlb_cgroup: support noreserve mappings hugetlb: support file_region coalescing again hugetlb_cgroup: add hugetlb_cgroup reservation tests hugetlb_cgroup: add hugetlb_cgroup reservation docs Mateusz Nosek <mateusznosek0@gmail.com>: mm/hugetlb.c: clean code by removing unnecessary initialization Vlastimil Babka <vbabka@suse.cz>: mm/hugetlb: remove unnecessary memory fetch in PageHeadHuge() Christophe Leroy <christophe.leroy@c-s.fr>: selftests/vm: fix map_hugetlb length used for testing read and write mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS "Matthew Wilcox (Oracle)" <willy@infradead.org>: include/linux/huge_mm.h: check PageTail in hpage_nr_pages even when !THP Documentation/admin-guide/cgroup-v1/hugetlb.rst | 103 +- Documentation/admin-guide/cgroup-v2.rst | 11 Documentation/admin-guide/sysctl/vm.rst | 3 Documentation/core-api/mm-api.rst | 3 Documentation/core-api/pin_user_pages.rst | 86 + arch/alpha/include/asm/Kbuild | 11 arch/alpha/mm/fault.c | 6 arch/arc/include/asm/Kbuild | 21 arch/arc/mm/fault.c | 37 arch/arm/include/asm/Kbuild | 12 arch/arm/mm/fault.c | 7 arch/arm64/include/asm/Kbuild | 18 arch/arm64/mm/fault.c | 26 arch/c6x/include/asm/Kbuild | 37 arch/csky/include/asm/Kbuild | 36 arch/h8300/include/asm/Kbuild | 46 arch/hexagon/include/asm/Kbuild | 33 arch/hexagon/mm/vm_fault.c | 5 arch/ia64/include/asm/Kbuild | 7 arch/ia64/mm/fault.c | 5 arch/m68k/include/asm/Kbuild | 24 arch/m68k/mm/fault.c | 7 arch/microblaze/include/asm/Kbuild | 29 arch/microblaze/mm/fault.c | 5 arch/mips/include/asm/Kbuild | 13 arch/mips/mm/fault.c | 5 arch/nds32/include/asm/Kbuild | 37 arch/nds32/mm/fault.c | 5 arch/nios2/include/asm/Kbuild | 38 arch/nios2/mm/fault.c | 7 arch/openrisc/include/asm/Kbuild | 36 arch/openrisc/mm/fault.c | 5 arch/parisc/include/asm/Kbuild | 18 arch/parisc/mm/fault.c | 8 arch/powerpc/include/asm/Kbuild | 4 arch/powerpc/mm/book3s64/pkeys.c | 12 arch/powerpc/mm/fault.c | 20 arch/powerpc/platforms/pseries/hotplug-memory.c | 2 arch/riscv/include/asm/Kbuild | 28 arch/riscv/mm/fault.c | 9 arch/s390/include/asm/Kbuild | 15 arch/s390/mm/fault.c | 10 arch/sh/include/asm/Kbuild | 16 arch/sh/mm/fault.c | 13 arch/sparc/include/asm/Kbuild | 14 arch/sparc/mm/fault_32.c | 5 arch/sparc/mm/fault_64.c | 5 arch/um/kernel/trap.c | 3 arch/unicore32/include/asm/Kbuild | 34 arch/unicore32/mm/fault.c | 8 arch/x86/include/asm/Kbuild | 2 arch/x86/include/asm/mmu_context.h | 15 arch/x86/mm/fault.c | 32 arch/xtensa/include/asm/Kbuild | 26 arch/xtensa/mm/fault.c | 5 drivers/base/node.c | 2 drivers/gpu/drm/ttm/ttm_bo_vm.c | 12 fs/fs_parser.c | 2 fs/hugetlbfs/inode.c | 30 fs/ocfs2/alloc.c | 3 fs/ocfs2/cluster/heartbeat.c | 12 fs/ocfs2/cluster/netdebug.c | 4 fs/ocfs2/cluster/tcp.c | 27 fs/ocfs2/cluster/tcp.h | 2 fs/ocfs2/dir.c | 4 fs/ocfs2/dlm/dlmcommon.h | 8 fs/ocfs2/dlm/dlmdebug.c | 100 - fs/ocfs2/dlm/dlmmaster.c | 2 fs/ocfs2/dlm/dlmthread.c | 3 fs/ocfs2/dlmglue.c | 2 fs/ocfs2/journal.c | 2 fs/ocfs2/namei.c | 15 fs/ocfs2/ocfs2_fs.h | 18 fs/ocfs2/refcounttree.c | 2 fs/ocfs2/reservations.c | 3 fs/ocfs2/stackglue.c | 2 fs/ocfs2/suballoc.c | 5 fs/ocfs2/super.c | 46 fs/pipe.c | 2 fs/userfaultfd.c | 64 - include/asm-generic/Kbuild | 52 + include/linux/cgroup-defs.h | 5 include/linux/fs.h | 5 include/linux/gfp.h | 6 include/linux/huge_mm.h | 10 include/linux/hugetlb.h | 76 + include/linux/hugetlb_cgroup.h | 175 +++ include/linux/kasan.h | 2 include/linux/kthread.h | 3 include/linux/memcontrol.h | 66 - include/linux/mempolicy.h | 29 include/linux/mm.h | 243 +++- include/linux/mm_types.h | 7 include/linux/mmzone.h | 6 include/linux/page_ref.h | 9 include/linux/pagemap.h | 29 include/linux/sched/signal.h | 18 include/linux/swap.h | 1 include/linux/topology.h | 17 include/trace/events/mmap.h | 48 include/uapi/linux/mman.h | 5 kernel/cgroup/cgroup.c | 17 kernel/fork.c | 9 kernel/sysctl.c | 31 lib/test_kasan.c | 19 mm/Makefile | 1 mm/compaction.c | 31 mm/debug.c | 54 - mm/filemap.c | 77 - mm/gup.c | 682 ++++++++++--- mm/gup_benchmark.c | 71 + mm/huge_memory.c | 29 mm/hugetlb.c | 866 ++++++++++++----- mm/hugetlb_cgroup.c | 347 +++++- mm/internal.h | 32 mm/kasan/common.c | 26 mm/kasan/generic.c | 9 mm/kasan/generic_report.c | 11 mm/kasan/kasan.h | 2 mm/kasan/report.c | 5 mm/kasan/tags.c | 9 mm/kasan/tags_report.c | 11 mm/khugepaged.c | 4 mm/kmemleak.c | 2 mm/list_lru.c | 12 mm/mapping_dirty_helpers.c | 42 mm/memblock.c | 2 mm/memcontrol.c | 378 ++++--- mm/memory-failure.c | 29 mm/memory.c | 4 mm/mempolicy.c | 73 + mm/migrate.c | 25 mm/mmap.c | 32 mm/mremap.c | 92 + mm/page-writeback.c | 19 mm/page_alloc.c | 82 - mm/page_counter.c | 29 mm/page_ext.c | 2 mm/rmap.c | 39 mm/shuffle.c | 2 mm/slab.h | 32 mm/slab_common.c | 2 mm/slub.c | 27 mm/sparse.c | 33 mm/swap.c | 5 mm/swap_slots.c | 12 mm/swap_state.c | 2 mm/swapfile.c | 10 mm/userfaultfd.c | 11 mm/vmpressure.c | 8 mm/vmscan.c | 111 -- mm/vmstat.c | 2 scripts/spelling.txt | 21 tools/accounting/getdelays.c | 2 tools/testing/selftests/vm/.gitignore | 1 tools/testing/selftests/vm/Makefile | 2 tools/testing/selftests/vm/charge_reserved_hugetlb.sh | 575 +++++++++++ tools/testing/selftests/vm/gup_benchmark.c | 15 tools/testing/selftests/vm/hugetlb_reparenting_test.sh | 244 ++++ tools/testing/selftests/vm/map_hugetlb.c | 14 tools/testing/selftests/vm/mlock2-tests.c | 233 ---- tools/testing/selftests/vm/mremap_dontunmap.c | 313 ++++++ tools/testing/selftests/vm/run_vmtests | 37 tools/testing/selftests/vm/write_hugetlb_memory.sh | 23 tools/testing/selftests/vm/write_to_hugetlbfs.c | 242 ++++ 165 files changed, 5020 insertions(+), 2376 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-03-29 2:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-03-29 2:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 5 fixes, based on 83fd69c93340177dcd66fd26ce6441fb581c1dbf: Naohiro Aota <naohiro.aota@wdc.com>: mm/swapfile.c: move inode_lock out of claim_swapfile David Hildenbrand <david@redhat.com>: drivers/base/memory.c: indicate all memory blocks as removable Mina Almasry <almasrymina@google.com>: hugetlb_cgroup: fix illegal access to memory Roman Gushchin <guro@fb.com>: mm: fork: fix kernel_stack memcg stats for various stack implementations "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: mm/sparse: fix kernel crash with pfn_section_valid check drivers/base/memory.c | 23 +++-------------------- include/linux/memcontrol.h | 12 ++++++++++++ kernel/fork.c | 4 ++-- mm/hugetlb_cgroup.c | 3 +-- mm/memcontrol.c | 38 ++++++++++++++++++++++++++++++++++++++ mm/sparse.c | 6 ++++++ mm/swapfile.c | 41 ++++++++++++++++++++--------------------- 7 files changed, 82 insertions(+), 45 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-03-22 1:19 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-03-22 1:19 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 10 fixes, based on c63c50fc2ec9afc4de21ef9ead2eac64b178cce1: Chunguang Xu <brookxu@tencent.com>: memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event Baoquan He <bhe@redhat.com>: mm/hotplug: fix hot remove failure in SPARSEMEM|!VMEMMAP case Qian Cai <cai@lca.pw>: page-flags: fix a crash at SetPageError(THP_SWAP) Chris Down <chris@chrisdown.name>: mm, memcg: fix corruption on 64-bit divisor in memory.high throttling mm, memcg: throttle allocators based on ancestral memory.high Michal Hocko <mhocko@suse.com>: mm: do not allow MADV_PAGEOUT for CoW pages Roman Penyaev <rpenyaev@suse.de>: epoll: fix possible lost wakeup on epoll_ctl() path Qian Cai <cai@lca.pw>: mm/mmu_notifier: silence PROVE_RCU_LIST warnings Vlastimil Babka <vbabka@suse.cz>: mm, slub: prevent kmalloc_node crashes and memory leaks Joerg Roedel <jroedel@suse.de>: x86/mm: split vmalloc_sync_all() arch/x86/mm/fault.c | 26 ++++++++++- drivers/acpi/apei/ghes.c | 2 fs/eventpoll.c | 8 +-- include/linux/page-flags.h | 2 include/linux/vmalloc.h | 5 +- kernel/notifier.c | 2 mm/madvise.c | 12 +++-- mm/memcontrol.c | 105 ++++++++++++++++++++++++++++----------------- mm/mmu_notifier.c | 27 +++++++---- mm/nommu.c | 10 +++- mm/slub.c | 26 +++++++---- mm/sparse.c | 8 ++- mm/vmalloc.c | 11 +++- 13 files changed, 165 insertions(+), 79 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-03-06 6:27 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-03-06 6:27 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 7 fixes, based on 9f65ed5fe41ce08ed1cb1f6a950f9ec694c142ad: Mel Gorman <mgorman@techsingularity.net>: mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa Huang Ying <ying.huang@intel.com>: mm: fix possible PMD dirty bit lost in set_pmd_migration_entry() "Kirill A. Shutemov" <kirill@shutemov.name>: mm: avoid data corruption on CoW fault into PFN-mapped VMA OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>: fat: fix uninit-memory access for partial initialized inode Sebastian Andrzej Siewior <bigeasy@linutronix.de>: mm/z3fold.c: do not include rwlock.h directly Vlastimil Babka <vbabka@suse.cz>: mm, hotplug: fix page online with DEBUG_PAGEALLOC compiled but not enabled Miroslav Benes <mbenes@suse.cz>: arch/Kconfig: update HAVE_RELIABLE_STACKTRACE description arch/Kconfig | 5 +++-- fs/fat/inode.c | 19 +++++++------------ include/linux/mm.h | 4 ++++ mm/huge_memory.c | 3 +-- mm/memory.c | 35 +++++++++++++++++++++++++++-------- mm/memory_hotplug.c | 8 +++++++- mm/mprotect.c | 38 ++++++++++++++++++++++++++++++++++++-- mm/z3fold.c | 1 - 8 files changed, 85 insertions(+), 28 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-02-21 4:00 Andrew Morton 2020-02-21 4:03 ` incoming Andrew Morton 2020-02-21 18:21 ` incoming Linus Torvalds 0 siblings, 2 replies; 530+ messages in thread From: Andrew Morton @ 2020-02-21 4:00 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits - A few y2038 fixes which missed the merge window whiole dependencies in NFS were being sorted out. - A bunch of fixes. Some minor, some not. Subsystems affected by this patch series: Arnd Bergmann <arnd@arndb.de>: y2038: remove ktime to/from timespec/timeval conversion y2038: remove unused time32 interfaces y2038: hide timeval/timespec/itimerval/itimerspec types Ioanna Alifieraki <ioanna-maria.alifieraki@canonical.com>: Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()" Christian Borntraeger <borntraeger@de.ibm.com>: include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for swap SeongJae Park <sjpark@amazon.de>: selftests/vm: add missed tests in run_vmtests Joe Perches <joe@perches.com>: get_maintainer: remove uses of P: for maintainer name Douglas Anderson <dianders@chromium.org>: scripts/get_maintainer.pl: deprioritize old Fixes: addresses Christoph Hellwig <hch@lst.de>: mm/swapfile.c: fix a comment in sys_swapon() Vasily Averin <vvs@virtuozzo.com>: mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps() Alexandru Ardelean <alexandru.ardelean@analog.com>: lib/string.c: update match_string() doc-strings with correct behavior Gavin Shan <gshan@redhat.com>: mm/vmscan.c: don't round up scan size for online memory cgroup Wei Yang <richardw.yang@linux.intel.com>: mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM Alexander Potapenko <glider@google.com>: lib/stackdepot.c: fix global out-of-bounds in stack_slabs Randy Dunlap <rdunlap@infradead.org>: MAINTAINERS: use tabs for SAFESETID MAINTAINERS | 8 - include/linux/compat.h | 29 ------ include/linux/ktime.h | 37 ------- include/linux/time32.h | 154 --------------------------------- include/linux/timekeeping32.h | 32 ------ include/linux/types.h | 5 - include/uapi/asm-generic/posix_types.h | 2 include/uapi/linux/swab.h | 4 include/uapi/linux/time.h | 22 ++-- ipc/sem.c | 6 - kernel/compat.c | 64 ------------- kernel/time/time.c | 43 --------- lib/stackdepot.c | 8 + lib/string.c | 16 +++ mm/memcontrol.c | 4 mm/sparse.c | 2 mm/swapfile.c | 2 mm/vmscan.c | 9 + scripts/get_maintainer.pl | 32 ------ tools/testing/selftests/vm/run_vmtests | 33 +++++++ 20 files changed, 93 insertions(+), 419 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-21 4:00 incoming Andrew Morton @ 2020-02-21 4:03 ` Andrew Morton 2020-02-21 18:21 ` incoming Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-02-21 4:03 UTC (permalink / raw) To: Linus Torvalds, linux-mm, mm-commits On Thu, 20 Feb 2020 20:00:30 -0800 Andrew Morton <akpm@linux-foundation.org> wrote: > - A few y2038 fixes which missed the merge window whiole dependencies > in NFS were being sorted out. > > - A bunch of fixes. Some minor, some not. 15 patches, based on ca7e1fd1026c5af6a533b4b5447e1d2f153e28f2 ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-21 4:00 incoming Andrew Morton 2020-02-21 4:03 ` incoming Andrew Morton @ 2020-02-21 18:21 ` Linus Torvalds 2020-02-21 18:32 ` incoming Konstantin Ryabitsev 2020-02-21 19:33 ` incoming Linus Torvalds 1 sibling, 2 replies; 530+ messages in thread From: Linus Torvalds @ 2020-02-21 18:21 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits On Thu, Feb 20, 2020 at 8:00 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - A few y2038 fixes which missed the merge window whiole dependencies > in NFS were being sorted out. > > - A bunch of fixes. Some minor, some not. Hmm. Konstantin's nice lore script _used_ to pick up your patches, but now they don't. I'm not sure what changed. It worked with your big series of 118 patches. It doesn't work with this smaller series of fixes. I think the difference is that you've done something bad to your patch sending. That big series was properly threaded with each of the patches being a reply to the 'incoming' message. This series is not. Please, Andrew, can you make your email flow more consistent so that I can actually use the nice new tool to download a patch series? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-21 18:21 ` incoming Linus Torvalds @ 2020-02-21 18:32 ` Konstantin Ryabitsev 2020-02-27 9:59 ` incoming Vlastimil Babka 2020-02-21 19:33 ` incoming Linus Torvalds 1 sibling, 1 reply; 530+ messages in thread From: Konstantin Ryabitsev @ 2020-02-21 18:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, Linux-MM, mm-commits On Fri, Feb 21, 2020 at 10:21:19AM -0800, Linus Torvalds wrote: > On Thu, Feb 20, 2020 at 8:00 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > - A few y2038 fixes which missed the merge window whiole dependencies > > in NFS were being sorted out. > > > > - A bunch of fixes. Some minor, some not. > > Hmm. Konstantin's nice lore script _used_ to pick up your patches, but > now they don't. > > I'm not sure what changed. It worked with your big series of 118 patches. > > It doesn't work with this smaller series of fixes. > > I think the difference is that you've done something bad to your patch > sending. That big series was properly threaded with each of the > patches being a reply to the 'incoming' message. > > This series is not. This is correct -- each patch is posted without an in-reply-to, so public-inbox doesn't group them into a thread. E.g.: https://lore.kernel.org/linux-mm/20200221040350.84HaG%25akpm@linux-foundation.org/ > > Please, Andrew, can you make your email flow more consistent so that I > can actually use the nice new tool to download a patch series? Andrew, I'll be happy to provide you with a helper tool if you can describe me your workflow. E.g. if you have a quilt directory of patches plus a series file, it could easily be a tiny wrapper like: send-patches --base-commit 1234abcd --cover cover.txt patchdir/series -K ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-21 18:32 ` incoming Konstantin Ryabitsev @ 2020-02-27 9:59 ` Vlastimil Babka 0 siblings, 0 replies; 530+ messages in thread From: Vlastimil Babka @ 2020-02-27 9:59 UTC (permalink / raw) To: Konstantin Ryabitsev, Linus Torvalds; +Cc: Andrew Morton, Linux-MM, mm-commits On 2/21/20 7:32 PM, Konstantin Ryabitsev wrote: > On Fri, Feb 21, 2020 at 10:21:19AM -0800, Linus Torvalds wrote: >> On Thu, Feb 20, 2020 at 8:00 PM Andrew Morton <akpm@linux-foundation.org> wrote: >> > >> > - A few y2038 fixes which missed the merge window whiole dependencies >> > in NFS were being sorted out. >> > >> > - A bunch of fixes. Some minor, some not. >> >> Hmm. Konstantin's nice lore script _used_ to pick up your patches, but >> now they don't. >> >> I'm not sure what changed. It worked with your big series of 118 patches. >> >> It doesn't work with this smaller series of fixes. >> >> I think the difference is that you've done something bad to your patch >> sending. That big series was properly threaded with each of the >> patches being a reply to the 'incoming' message. >> >> This series is not. > > This is correct -- each patch is posted without an in-reply-to, so > public-inbox doesn't group them into a thread. > > E.g.: > https://lore.kernel.org/linux-mm/20200221040350.84HaG%25akpm@linux-foundation.org/ > >> >> Please, Andrew, can you make your email flow more consistent so that I >> can actually use the nice new tool to download a patch series? > > Andrew, I'll be happy to provide you with a helper tool if you can > describe me your workflow. E.g. if you have a quilt directory of patches > plus a series file, it could easily be a tiny wrapper like: > > send-patches --base-commit 1234abcd --cover cover.txt patchdir/series Once/if there is such tool, could it perhaps instead of mass e-mailing create git commits, push them to korg repo and send a pull request? Thanks, Vlastimil > -K > ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-21 18:21 ` incoming Linus Torvalds 2020-02-21 18:32 ` incoming Konstantin Ryabitsev @ 2020-02-21 19:33 ` Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-02-21 19:33 UTC (permalink / raw) To: Andrew Morton, Konstantin Ryabitsev; +Cc: Linux-MM, mm-commits Side note: I've obviously picked it up the old-fashioned way, but I had been looking forward to seeing if I could just automate this more. Linus On Fri, Feb 21, 2020 at 10:21 AM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Please, Andrew, can you make your email flow more consistent so that I > can actually use the nice new tool to download a patch series? > > Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-02-04 1:33 Andrew Morton 2020-02-04 2:27 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-02-04 1:33 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm The rest of MM and the rest of everything else. Subsystems affected by this patch series: hotfixes mm/pagealloc mm/memory-hotplug ipc misc mm/cleanups mm/pagemap procfs lib cleanups arm Subsystem: hotfixes Gang He <GHe@suse.com>: ocfs2: fix oops when writing cloned file David Hildenbrand <david@redhat.com>: Patch series "mm: fix max_pfn not falling on section boundary", v2: mm/page_alloc.c: fix uninitialized memmaps on a partially populated last section fs/proc/page.c: allow inspection of last section and fix end detection mm/page_alloc.c: initialize memmap of unavailable memory directly Subsystem: mm/pagealloc David Hildenbrand <david@redhat.com>: mm/page_alloc: fix and rework pfn handling in memmap_init_zone() mm: factor out next_present_section_nr() Subsystem: mm/memory-hotplug "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "mm/memory_hotplug: Shrink zones before removing memory", v6: mm/memmap_init: update variable name in memmap_init_zone David Hildenbrand <david@redhat.com>: mm/memory_hotplug: poison memmap in remove_pfn_range_from_zone() mm/memory_hotplug: we always have a zone in find_(smallest|biggest)_section_pfn mm/memory_hotplug: don't check for "all holes" in shrink_zone_span() mm/memory_hotplug: drop local variables in shrink_zone_span() mm/memory_hotplug: cleanup __remove_pages() mm/memory_hotplug: drop valid_start/valid_end from test_pages_in_a_zone() Subsystem: ipc Manfred Spraul <manfred@colorfullife.com>: smp_mb__{before,after}_atomic(): update Documentation Davidlohr Bueso <dave@stgolabs.net>: ipc/mqueue.c: remove duplicated code Manfred Spraul <manfred@colorfullife.com>: ipc/mqueue.c: update/document memory barriers ipc/msg.c: update and document memory barriers ipc/sem.c: document and update memory barriers Lu Shuaibing <shuaibinglu@126.com>: ipc/msg.c: consolidate all xxxctl_down() functions drivers/block/null_blk_main.c: fix layout Subsystem: misc Andrew Morton <akpm@linux-foundation.org>: drivers/block/null_blk_main.c: fix layout drivers/block/null_blk_main.c: fix uninitialized var warnings Randy Dunlap <rdunlap@infradead.org>: pinctrl: fix pxa2xx.c build warnings Subsystem: mm/cleanups Florian Westphal <fw@strlen.de>: mm: remove __krealloc Subsystem: mm/pagemap Steven Price <steven.price@arm.com>: Patch series "Generic page walk and ptdump", v17: mm: add generic p?d_leaf() macros arc: mm: add p?d_leaf() definitions arm: mm: add p?d_leaf() definitions arm64: mm: add p?d_leaf() definitions mips: mm: add p?d_leaf() definitions powerpc: mm: add p?d_leaf() definitions riscv: mm: add p?d_leaf() definitions s390: mm: add p?d_leaf() definitions sparc: mm: add p?d_leaf() definitions x86: mm: add p?d_leaf() definitions mm: pagewalk: add p4d_entry() and pgd_entry() mm: pagewalk: allow walking without vma mm: pagewalk: don't lock PTEs for walk_page_range_novma() mm: pagewalk: fix termination condition in walk_pte_range() mm: pagewalk: add 'depth' parameter to pte_hole x86: mm: point to struct seq_file from struct pg_state x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct x86: mm: convert ptdump_walk_pgd_level_debugfs() to take an mm_struct mm: add generic ptdump x86: mm: convert dump_pagetables to use walk_page_range arm64: mm: convert mm/dump.c to use walk_page_range() arm64: mm: display non-present entries in ptdump mm: ptdump: reduce level numbers by 1 in note_page() x86: mm: avoid allocating struct mm_struct on the stack "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "Fixup page directory freeing", v4: powerpc/mmu_gather: enable RCU_TABLE_FREE even for !SMP case Peter Zijlstra <peterz@infradead.org>: mm/mmu_gather: invalidate TLB correctly on batch allocation failure and flush asm-generic/tlb: avoid potential double flush asm-gemeric/tlb: remove stray function declarations asm-generic/tlb: add missing CONFIG symbol asm-generic/tlb: rename HAVE_RCU_TABLE_FREE asm-generic/tlb: rename HAVE_MMU_GATHER_PAGE_SIZE asm-generic/tlb: rename HAVE_MMU_GATHER_NO_GATHER asm-generic/tlb: provide MMU_GATHER_TABLE_FREE Subsystem: procfs Alexey Dobriyan <adobriyan@gmail.com>: proc: decouple proc from VFS with "struct proc_ops" proc: convert everything to "struct proc_ops" Subsystem: lib Yury Norov <yury.norov@gmail.com>: Patch series "lib: rework bitmap_parse", v5: lib/string: add strnchrnul() bitops: more BITS_TO_* macros lib: add test for bitmap_parse() lib: make bitmap_parse_user a wrapper on bitmap_parse lib: rework bitmap_parse() lib: new testcases for bitmap_parse{_user} include/linux/cpumask.h: don't calculate length of the input string Subsystem: cleanups Masahiro Yamada <masahiroy@kernel.org>: treewide: remove redundant IS_ERR() before error code check Subsystem: arm Chen-Yu Tsai <wens@csie.org>: ARM: dma-api: fix max_pfn off-by-one error in __dma_supported() Documentation/memory-barriers.txt | 14 arch/Kconfig | 17 arch/alpha/kernel/srm_env.c | 17 arch/arc/include/asm/pgtable.h | 1 arch/arm/Kconfig | 2 arch/arm/include/asm/pgtable-2level.h | 1 arch/arm/include/asm/pgtable-3level.h | 1 arch/arm/include/asm/tlb.h | 6 arch/arm/kernel/atags_proc.c | 8 arch/arm/mm/alignment.c | 14 arch/arm/mm/dma-mapping.c | 2 arch/arm64/Kconfig | 3 arch/arm64/Kconfig.debug | 19 arch/arm64/include/asm/pgtable.h | 2 arch/arm64/include/asm/ptdump.h | 8 arch/arm64/mm/Makefile | 4 arch/arm64/mm/dump.c | 152 ++---- arch/arm64/mm/mmu.c | 4 arch/arm64/mm/ptdump_debugfs.c | 2 arch/ia64/kernel/salinfo.c | 24 - arch/m68k/kernel/bootinfo_proc.c | 8 arch/mips/include/asm/pgtable.h | 5 arch/mips/lasat/picvue_proc.c | 31 - arch/powerpc/Kconfig | 7 arch/powerpc/include/asm/book3s/32/pgalloc.h | 8 arch/powerpc/include/asm/book3s/64/pgalloc.h | 2 arch/powerpc/include/asm/book3s/64/pgtable.h | 3 arch/powerpc/include/asm/nohash/pgalloc.h | 8 arch/powerpc/include/asm/tlb.h | 11 arch/powerpc/kernel/proc_powerpc.c | 10 arch/powerpc/kernel/rtas-proc.c | 70 +-- arch/powerpc/kernel/rtas_flash.c | 34 - arch/powerpc/kernel/rtasd.c | 14 arch/powerpc/mm/book3s64/pgtable.c | 7 arch/powerpc/mm/numa.c | 12 arch/powerpc/platforms/pseries/lpar.c | 24 - arch/powerpc/platforms/pseries/lparcfg.c | 14 arch/powerpc/platforms/pseries/reconfig.c | 8 arch/powerpc/platforms/pseries/scanlog.c | 15 arch/riscv/include/asm/pgtable-64.h | 7 arch/riscv/include/asm/pgtable.h | 7 arch/s390/Kconfig | 4 arch/s390/include/asm/pgtable.h | 2 arch/sh/mm/alignment.c | 17 arch/sparc/Kconfig | 3 arch/sparc/include/asm/pgtable_64.h | 2 arch/sparc/include/asm/tlb_64.h | 11 arch/sparc/kernel/led.c | 15 arch/um/drivers/mconsole_kern.c | 9 arch/um/kernel/exitcode.c | 15 arch/um/kernel/process.c | 15 arch/x86/Kconfig | 3 arch/x86/Kconfig.debug | 20 arch/x86/include/asm/pgtable.h | 10 arch/x86/include/asm/tlb.h | 4 arch/x86/kernel/cpu/mtrr/if.c | 21 arch/x86/mm/Makefile | 4 arch/x86/mm/debug_pagetables.c | 18 arch/x86/mm/dump_pagetables.c | 418 +++++------------- arch/x86/platform/efi/efi_32.c | 2 arch/x86/platform/efi/efi_64.c | 4 arch/x86/platform/uv/tlb_uv.c | 14 arch/xtensa/platforms/iss/simdisk.c | 10 crypto/af_alg.c | 2 drivers/acpi/battery.c | 15 drivers/acpi/proc.c | 15 drivers/acpi/scan.c | 2 drivers/base/memory.c | 9 drivers/block/null_blk_main.c | 58 +- drivers/char/hw_random/bcm2835-rng.c | 2 drivers/char/hw_random/omap-rng.c | 4 drivers/clk/clk.c | 2 drivers/dma/mv_xor_v2.c | 2 drivers/firmware/efi/arm-runtime.c | 2 drivers/gpio/gpiolib-devres.c | 2 drivers/gpio/gpiolib-of.c | 8 drivers/gpio/gpiolib.c | 2 drivers/hwmon/dell-smm-hwmon.c | 15 drivers/i2c/busses/i2c-mv64xxx.c | 5 drivers/i2c/busses/i2c-synquacer.c | 2 drivers/ide/ide-proc.c | 19 drivers/input/input.c | 28 - drivers/isdn/capi/kcapi_proc.c | 6 drivers/macintosh/via-pmu.c | 17 drivers/md/md.c | 15 drivers/misc/sgi-gru/gruprocfs.c | 42 - drivers/mtd/ubi/build.c | 2 drivers/net/wireless/cisco/airo.c | 126 ++--- drivers/net/wireless/intel/ipw2x00/libipw_module.c | 15 drivers/net/wireless/intersil/hostap/hostap_hw.c | 4 drivers/net/wireless/intersil/hostap/hostap_proc.c | 14 drivers/net/wireless/intersil/hostap/hostap_wlan.h | 2 drivers/net/wireless/ray_cs.c | 20 drivers/of/device.c | 2 drivers/parisc/led.c | 17 drivers/pci/controller/pci-tegra.c | 2 drivers/pci/proc.c | 25 - drivers/phy/phy-core.c | 4 drivers/pinctrl/pxa/pinctrl-pxa2xx.c | 1 drivers/platform/x86/thinkpad_acpi.c | 15 drivers/platform/x86/toshiba_acpi.c | 60 +- drivers/pnp/isapnp/proc.c | 9 drivers/pnp/pnpbios/proc.c | 17 drivers/s390/block/dasd_proc.c | 15 drivers/s390/cio/blacklist.c | 14 drivers/s390/cio/css.c | 11 drivers/scsi/esas2r/esas2r_main.c | 9 drivers/scsi/scsi_devinfo.c | 15 drivers/scsi/scsi_proc.c | 29 - drivers/scsi/sg.c | 30 - drivers/spi/spi-orion.c | 3 drivers/staging/rtl8192u/ieee80211/ieee80211_module.c | 14 drivers/tty/sysrq.c | 8 drivers/usb/gadget/function/rndis.c | 17 drivers/video/fbdev/imxfb.c | 2 drivers/video/fbdev/via/viafbdev.c | 105 ++-- drivers/zorro/proc.c | 9 fs/cifs/cifs_debug.c | 108 ++-- fs/cifs/dfs_cache.c | 13 fs/cifs/dfs_cache.h | 2 fs/ext4/super.c | 2 fs/f2fs/node.c | 2 fs/fscache/internal.h | 2 fs/fscache/object-list.c | 11 fs/fscache/proc.c | 2 fs/jbd2/journal.c | 13 fs/jfs/jfs_debug.c | 14 fs/lockd/procfs.c | 12 fs/nfsd/nfsctl.c | 13 fs/nfsd/stats.c | 12 fs/ocfs2/file.c | 14 fs/ocfs2/suballoc.c | 2 fs/proc/cpuinfo.c | 12 fs/proc/generic.c | 38 - fs/proc/inode.c | 76 +-- fs/proc/internal.h | 5 fs/proc/kcore.c | 13 fs/proc/kmsg.c | 14 fs/proc/page.c | 54 +- fs/proc/proc_net.c | 32 - fs/proc/proc_sysctl.c | 2 fs/proc/root.c | 2 fs/proc/stat.c | 12 fs/proc/task_mmu.c | 4 fs/proc/vmcore.c | 10 fs/sysfs/group.c | 2 include/asm-generic/pgtable.h | 20 include/asm-generic/tlb.h | 138 +++-- include/linux/bitmap.h | 8 include/linux/bitops.h | 4 include/linux/cpumask.h | 4 include/linux/memory_hotplug.h | 4 include/linux/mm.h | 6 include/linux/mmzone.h | 10 include/linux/pagewalk.h | 49 +- include/linux/proc_fs.h | 23 include/linux/ptdump.h | 24 - include/linux/seq_file.h | 13 include/linux/slab.h | 1 include/linux/string.h | 1 include/linux/sunrpc/stats.h | 4 ipc/mqueue.c | 123 ++++- ipc/msg.c | 62 +- ipc/sem.c | 66 +- ipc/util.c | 14 kernel/configs.c | 9 kernel/irq/proc.c | 42 - kernel/kallsyms.c | 12 kernel/latencytop.c | 14 kernel/locking/lockdep_proc.c | 15 kernel/module.c | 12 kernel/profile.c | 24 - kernel/sched/psi.c | 48 +- lib/bitmap.c | 195 ++++---- lib/string.c | 17 lib/test_bitmap.c | 105 ++++ mm/Kconfig.debug | 21 mm/Makefile | 1 mm/gup.c | 2 mm/hmm.c | 66 +- mm/memory_hotplug.c | 104 +--- mm/memremap.c | 2 mm/migrate.c | 5 mm/mincore.c | 1 mm/mmu_gather.c | 158 ++++-- mm/page_alloc.c | 75 +-- mm/pagewalk.c | 167 +++++-- mm/ptdump.c | 159 ++++++ mm/slab_common.c | 37 - mm/sparse.c | 10 mm/swapfile.c | 14 net/atm/mpoa_proc.c | 17 net/atm/proc.c | 8 net/core/dev.c | 2 net/core/filter.c | 2 net/core/pktgen.c | 44 - net/ipv4/ipconfig.c | 10 net/ipv4/netfilter/ipt_CLUSTERIP.c | 16 net/ipv4/route.c | 24 - net/netfilter/xt_recent.c | 17 net/sunrpc/auth_gss/svcauth_gss.c | 10 net/sunrpc/cache.c | 45 - net/sunrpc/stats.c | 21 net/xfrm/xfrm_policy.c | 2 samples/kfifo/bytestream-example.c | 11 samples/kfifo/inttype-example.c | 11 samples/kfifo/record-example.c | 11 scripts/coccinelle/free/devm_free.cocci | 4 sound/core/info.c | 34 - sound/soc/codecs/ak4104.c | 3 sound/soc/codecs/cs4270.c | 3 sound/soc/codecs/tlv320aic32x4.c | 6 sound/soc/sunxi/sun4i-spdif.c | 2 tools/include/linux/bitops.h | 9 214 files changed, 2589 insertions(+), 2227 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-04 1:33 incoming Andrew Morton @ 2020-02-04 2:27 ` Linus Torvalds 2020-02-04 2:46 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2020-02-04 2:27 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Tue, Feb 4, 2020 at 1:33 AM Andrew Morton <akpm@linux-foundation.org> wrote: > > The rest of MM and the rest of everything else. What's the base? You've changed your scripts or something, and that information is no longer in your cover letter.. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-04 2:27 ` incoming Linus Torvalds @ 2020-02-04 2:46 ` Andrew Morton 2020-02-04 3:11 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2020-02-04 2:46 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, Linux-MM On Tue, 4 Feb 2020 02:27:48 +0000 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Tue, Feb 4, 2020 at 1:33 AM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > The rest of MM and the rest of everything else. > > What's the base? You've changed your scripts or something, and that > information is no longer in your cover letter.. > Crap, sorry, geriatric. d4e9056daedca3891414fe3c91de3449a5dad0f2 ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2020-02-04 2:46 ` incoming Andrew Morton @ 2020-02-04 3:11 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2020-02-04 3:11 UTC (permalink / raw) To: Andrew Morton; +Cc: mm-commits, Linux-MM On Tue, Feb 4, 2020 at 2:46 AM Andrew Morton <akpm@linux-foundation.org> wrote: > > On Tue, 4 Feb 2020 02:27:48 +0000 Linus Torvalds <torvalds@linux-foundation.org> wrote: > > > What's the base? You've changed your scripts or something, and that > > information is no longer in your cover letter.. > > Crap, sorry, geriatric. > > d4e9056daedca3891414fe3c91de3449a5dad0f2 Ok, I've tentatively applied it with the MIME decoding fixes I found, and I'll guess I'll let it build and sit for a while before merging it into my tree. I didn't find anything else odd in there. But... Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-01-31 6:10 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-01-31 6:10 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits Most of -mm and quite a number of other subsystems. MM is fairly quiet this time. Holidays, I assume. 119 patches, based on 39bed42de2e7d74686a2d5a45638d6a5d7e7d473: Subsystems affected by this patch series: hotfixes scripts ocfs2 mm/slub mm/kmemleak mm/debug mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/tracing mm/kasan mm/initialization mm/pagealloc mm/vmscan mm/tools mm/memblock mm/oom-kill mm/hugetlb mm/migration mm/mmap mm/memory-hotplug mm/zswap mm/cleanups mm/zram misc lib binfmt init reiserfs exec dma-mapping kcov Subsystem: hotfixes Andy Shevchenko <andriy.shevchenko@linux.intel.com>: lib/test_bitmap: correct test data offsets for 32-bit "Theodore Ts'o" <tytso@mit.edu>: memcg: fix a crash in wb_workfn when a device disappears Dan Carpenter <dan.carpenter@oracle.com>: mm/mempolicy.c: fix out of bounds write in mpol_parse_str() Pingfan Liu <kernelfans@gmail.com>: mm/sparse.c: reset section's mem_map when fully deactivated Wei Yang <richardw.yang@linux.intel.com>: mm/migrate.c: also overwrite error when it is bigger than zero Dan Williams <dan.j.williams@intel.com>: mm/memory_hotplug: fix remove_memory() lockdep splat Wei Yang <richardw.yang@linux.intel.com>: mm: thp: don't need care deferred split queue in memcg charge move path Yang Shi <yang.shi@linux.alibaba.com>: mm: move_pages: report the number of non-attempted pages Subsystem: scripts Xiong <xndchn@gmail.com>: scripts/spelling.txt: add more spellings to spelling.txt Luca Ceresoli <luca@lucaceresoli.net>: scripts/spelling.txt: add "issus" typo Subsystem: ocfs2 Aditya Pakki <pakki001@umn.edu>: fs: ocfs: remove unnecessary assertion in dlm_migrate_lockres zhengbin <zhengbin13@huawei.com>: ocfs2: remove unneeded semicolons Masahiro Yamada <masahiroy@kernel.org>: ocfs2: make local header paths relative to C files Colin Ian King <colin.king@canonical.com>: ocfs2/dlm: remove redundant assignment to ret Andy Shevchenko <andriy.shevchenko@linux.intel.com>: ocfs2/dlm: move BITS_TO_BYTES() to bitops.h for wider use wangyan <wangyan122@huawei.com>: ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans() ocfs2: use ocfs2_update_inode_fsync_trans() to access t_tid in handle->h_transaction Subsystem: mm/slub Yu Zhao <yuzhao@google.com>: mm/slub.c: avoid slub allocation while holding list_lock Subsystem: mm/kmemleak He Zhe <zhe.he@windriver.com>: mm/kmemleak: turn kmemleak_lock and object->lock to raw_spinlock_t Subsystem: mm/debug Vlastimil Babka <vbabka@suse.cz>: mm/debug.c: always print flags in dump_page() Subsystem: mm/pagecache Ira Weiny <ira.weiny@intel.com>: mm/filemap.c: clean up filemap_write_and_wait() Subsystem: mm/gup Qiujun Huang <hqjagain@gmail.com>: mm: fix gup_pud_range Wei Yang <richardw.yang@linux.intel.com>: mm/gup.c: use is_vm_hugetlb_page() to check whether to follow huge John Hubbard <jhubbard@nvidia.com>: Patch series "mm/gup: prereqs to track dma-pinned pages: FOLL_PIN", v12: mm/gup: factor out duplicate code from four routines mm/gup: move try_get_compound_head() to top, fix minor issues Dan Williams <dan.j.williams@intel.com>: mm: Cleanup __put_devmap_managed_page() vs ->page_free() John Hubbard <jhubbard@nvidia.com>: mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages goldish_pipe: rename local pin_user_pages() routine mm: fix get_user_pages_remote()'s handling of FOLL_LONGTERM vfio: fix FOLL_LONGTERM use, simplify get_user_pages_remote() call mm/gup: allow FOLL_FORCE for get_user_pages_fast() IB/umem: use get_user_pages_fast() to pin DMA pages media/v4l2-core: set pages dirty upon releasing DMA buffers mm/gup: introduce pin_user_pages*() and FOLL_PIN goldish_pipe: convert to pin_user_pages() and put_user_page() IB/{core,hw,umem}: set FOLL_PIN via pin_user_pages*(), fix up ODP mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() drm/via: set FOLL_PIN via pin_user_pages_fast() fs/io_uring: set FOLL_PIN via pin_user_pages() net/xdp: set FOLL_PIN via pin_user_pages() media/v4l2-core: pin_user_pages (FOLL_PIN) and put_user_page() conversion vfio, mm: pin_user_pages (FOLL_PIN) and put_user_page() conversion powerpc: book3s64: convert to pin_user_pages() and put_user_page() mm/gup_benchmark: use proper FOLL_WRITE flags instead of hard-coding "1" mm, tree-wide: rename put_user_page*() to unpin_user_page*() Subsystem: mm/swap Vasily Averin <vvs@virtuozzo.com>: mm/swapfile.c: swap_next should increase position index Subsystem: mm/memcg Kaitao Cheng <pilgrimtao@gmail.com>: mm/memcontrol.c: cleanup some useless code Subsystem: mm/pagemap Li Xinhai <lixinhai.lxh@gmail.com>: mm/page_vma_mapped.c: explicitly compare pfn for normal, hugetlbfs and THP page Subsystem: mm/tracing Junyong Sun <sunjy516@gmail.com>: mm, tracing: print symbol name for kmem_alloc_node call_site events Subsystem: mm/kasan "Gustavo A. R. Silva" <gustavo@embeddedor.com>: lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() Subsystem: mm/initialization Andy Shevchenko <andriy.shevchenko@linux.intel.com>: mm/early_ioremap.c: use %pa to print resource_size_t variables Subsystem: mm/pagealloc "Kirill A. Shutemov" <kirill@shutemov.name>: mm/page_alloc: skip non present sections on zone initialization David Hildenbrand <david@redhat.com>: mm: remove the memory isolate notifier mm: remove "count" parameter from has_unmovable_pages() Subsystem: mm/vmscan Liu Song <liu.song11@zte.com.cn>: mm/vmscan.c: remove unused return value of shrink_node Alex Shi <alex.shi@linux.alibaba.com>: mm/vmscan: remove prefetch_prev_lru_page mm/vmscan: remove unused RECLAIM_OFF/RECLAIM_ZONE Subsystem: mm/tools Daniel Wagner <dwagner@suse.de>: tools/vm/slabinfo: fix sanity checks enabling Subsystem: mm/memblock Anshuman Khandual <anshuman.khandual@arm.com>: mm/memblock: define memblock_physmem_add() memblock: Use __func__ in remaining memblock_dbg() call sites Subsystem: mm/oom-kill David Rientjes <rientjes@google.com>: mm, oom: dump stack of victim when reaping failed Subsystem: mm/hugetlb Wei Yang <richardw.yang@linux.intel.com>: mm/huge_memory.c: use head to check huge zero page mm/huge_memory.c: use head to emphasize the purpose of page mm/huge_memory.c: reduce critical section protected by split_queue_lock Subsystem: mm/migration Ralph Campbell <rcampbell@nvidia.com>: mm/migrate: remove useless mask of start address mm/migrate: clean up some minor coding style mm/migrate: add stable check in migrate_vma_insert_page() David Rientjes <rientjes@google.com>: mm, thp: fix defrag setting if newline is not used Subsystem: mm/mmap Miaohe Lin <linmiaohe@huawei.com>: mm/mmap.c: get rid of odd jump labels in find_mergeable_anon_vma() Subsystem: mm/memory-hotplug David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: pass in nid to online_pages()": mm/memory_hotplug: pass in nid to online_pages() Qian Cai <cai@lca.pw>: mm/hotplug: silence a lockdep splat with printk() mm/page_isolation: fix potential warning from user Subsystem: mm/zswap Vitaly Wool <vitaly.wool@konsulko.com>: mm/zswap.c: add allocation hysteresis if pool limit is hit Dan Carpenter <dan.carpenter@oracle.com>: zswap: potential NULL dereference on error in init_zswap() Subsystem: mm/cleanups Yu Zhao <yuzhao@google.com>: include/linux/mm.h: clean up obsolete check on space in page->flags Wei Yang <richardw.yang@linux.intel.com>: include/linux/mm.h: remove dead code totalram_pages_set() Anshuman Khandual <anshuman.khandual@arm.com>: include/linux/memory.h: drop fields 'hw' and 'phys_callback' from struct memory_block Hao Lee <haolee.swjtu@gmail.com>: mm: fix comments related to node reclaim Subsystem: mm/zram Taejoon Song <taejoon.song@lge.com>: zram: try to avoid worst-case scenario on same element pages Colin Ian King <colin.king@canonical.com>: drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store Subsystem: misc Akinobu Mita <akinobu.mita@gmail.com>: Patch series "add header file for kelvin to/from Celsius conversion: include/linux/units.h: add helpers for kelvin to/from Celsius conversion ACPI: thermal: switch to use <linux/units.h> helpers platform/x86: asus-wmi: switch to use <linux/units.h> helpers platform/x86: intel_menlow: switch to use <linux/units.h> helpers thermal: int340x: switch to use <linux/units.h> helpers thermal: intel_pch: switch to use <linux/units.h> helpers nvme: hwmon: switch to use <linux/units.h> helpers thermal: remove kelvin to/from Celsius conversion helpers from <linux/thermal.h> iwlegacy: use <linux/units.h> helpers iwlwifi: use <linux/units.h> helpers thermal: armada: remove unused TO_MCELSIUS macro iio: adc: qcom-vadc-common: use <linux/units.h> helpers Subsystem: lib Mikhail Zaslonko <zaslonko@linux.ibm.com>: Patch series "S390 hardware support for kernel zlib", v3: lib/zlib: add s390 hardware support for kernel zlib_deflate s390/boot: rename HEAP_SIZE due to name collision lib/zlib: add s390 hardware support for kernel zlib_inflate s390/boot: add dfltcc= kernel command line parameter lib/zlib: add zlib_deflate_dfltcc_enabled() function btrfs: use larger zlib buffer for s390 hardware compression Nathan Chancellor <natechancellor@gmail.com>: lib/scatterlist.c: adjust indentation in __sg_alloc_table Yury Norov <yury.norov@gmail.com>: uapi: rename ext2_swab() to swab() and share globally in swab.h lib/find_bit.c: join _find_next_bit{_le} lib/find_bit.c: uninline helper _find_next_bit() Subsystem: binfmt Alexey Dobriyan <adobriyan@gmail.com>: fs/binfmt_elf.c: smaller code generation around auxv vector fill fs/binfmt_elf.c: fix ->start_code calculation fs/binfmt_elf.c: don't copy ELF header around fs/binfmt_elf.c: better codegen around current->mm fs/binfmt_elf.c: make BAD_ADDR() unlikely fs/binfmt_elf.c: coredump: allocate core ELF header on stack fs/binfmt_elf.c: coredump: delete duplicated overflow check fs/binfmt_elf.c: coredump: allow process with empty address space to coredump Subsystem: init Arvind Sankar <nivedita@alum.mit.edu>: init/main.c: log arguments and environment passed to init init/main.c: remove unnecessary repair_env_string in do_initcall_level Patch series "init/main.c: minor cleanup/bugfix of envvar handling", v2: init/main.c: fix quoted value handling in unknown_bootoption Christophe Leroy <christophe.leroy@c-s.fr>: init/main.c: fix misleading "This architecture does not have kernel memory protection" message Subsystem: reiserfs Yunfeng Ye <yeyunfeng@huawei.com>: reiserfs: prevent NULL pointer dereference in reiserfs_insert_item() Subsystem: exec Alexey Dobriyan <adobriyan@gmail.com>: execve: warn if process starts with executable stack Subsystem: dma-mapping Andy Shevchenko <andriy.shevchenko@linux.intel.com>: include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc() Subsystem: kcov Dmitry Vyukov <dvyukov@google.com>: kcov: ignore fault-inject and stacktrace Documentation/admin-guide/kernel-parameters.txt | 12 Documentation/core-api/index.rst | 1 Documentation/core-api/pin_user_pages.rst | 234 +++++ Documentation/vm/zswap.rst | 13 arch/powerpc/mm/book3s64/iommu_api.c | 14 arch/s390/boot/compressed/decompressor.c | 8 arch/s390/boot/ipl_parm.c | 14 arch/s390/include/asm/setup.h | 7 arch/s390/kernel/setup.c | 14 drivers/acpi/thermal.c | 34 drivers/base/memory.c | 25 drivers/block/zram/zram_drv.c | 10 drivers/gpu/drm/via/via_dmablit.c | 6 drivers/iio/adc/qcom-vadc-common.c | 6 drivers/iio/adc/qcom-vadc-common.h | 1 drivers/infiniband/core/umem.c | 21 drivers/infiniband/core/umem_odp.c | 13 drivers/infiniband/hw/hfi1/user_pages.c | 4 drivers/infiniband/hw/mthca/mthca_memfree.c | 8 drivers/infiniband/hw/qib/qib_user_pages.c | 4 drivers/infiniband/hw/qib/qib_user_sdma.c | 8 drivers/infiniband/hw/usnic/usnic_uiom.c | 4 drivers/infiniband/sw/siw/siw_mem.c | 4 drivers/media/v4l2-core/videobuf-dma-sg.c | 20 drivers/net/ethernet/broadcom/bnx2x/bnx2x_init.h | 1 drivers/net/wireless/intel/iwlegacy/4965-mac.c | 3 drivers/net/wireless/intel/iwlegacy/4965.c | 17 drivers/net/wireless/intel/iwlegacy/common.h | 3 drivers/net/wireless/intel/iwlwifi/dvm/dev.h | 5 drivers/net/wireless/intel/iwlwifi/dvm/devices.c | 6 drivers/nvdimm/pmem.c | 6 drivers/nvme/host/hwmon.c | 13 drivers/platform/goldfish/goldfish_pipe.c | 39 drivers/platform/x86/asus-wmi.c | 7 drivers/platform/x86/intel_menlow.c | 9 drivers/thermal/armada_thermal.c | 2 drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c | 7 drivers/thermal/intel/intel_pch_thermal.c | 3 drivers/vfio/vfio_iommu_type1.c | 39 fs/binfmt_elf.c | 154 +-- fs/btrfs/compression.c | 2 fs/btrfs/zlib.c | 135 ++ fs/exec.c | 5 fs/fs-writeback.c | 2 fs/io_uring.c | 6 fs/ocfs2/cluster/quorum.c | 2 fs/ocfs2/dlm/Makefile | 2 fs/ocfs2/dlm/dlmast.c | 8 fs/ocfs2/dlm/dlmcommon.h | 4 fs/ocfs2/dlm/dlmconvert.c | 8 fs/ocfs2/dlm/dlmdebug.c | 8 fs/ocfs2/dlm/dlmdomain.c | 8 fs/ocfs2/dlm/dlmlock.c | 8 fs/ocfs2/dlm/dlmmaster.c | 10 fs/ocfs2/dlm/dlmrecovery.c | 10 fs/ocfs2/dlm/dlmthread.c | 8 fs/ocfs2/dlm/dlmunlock.c | 8 fs/ocfs2/dlmfs/Makefile | 2 fs/ocfs2/dlmfs/dlmfs.c | 4 fs/ocfs2/dlmfs/userdlm.c | 6 fs/ocfs2/dlmglue.c | 2 fs/ocfs2/journal.h | 8 fs/ocfs2/namei.c | 3 fs/reiserfs/stree.c | 3 include/linux/backing-dev.h | 10 include/linux/bitops.h | 1 include/linux/fs.h | 6 include/linux/io-mapping.h | 5 include/linux/memblock.h | 7 include/linux/memory.h | 29 include/linux/memory_hotplug.h | 3 include/linux/mm.h | 116 +- include/linux/mmzone.h | 2 include/linux/page-isolation.h | 8 include/linux/swab.h | 1 include/linux/thermal.h | 11 include/linux/units.h | 84 + include/linux/zlib.h | 6 include/trace/events/kmem.h | 4 include/trace/events/writeback.h | 37 include/uapi/linux/swab.h | 10 include/uapi/linux/sysctl.h | 2 init/main.c | 36 kernel/Makefile | 1 lib/Kconfig | 7 lib/Makefile | 2 lib/decompress_inflate.c | 13 lib/find_bit.c | 82 - lib/scatterlist.c | 2 lib/test_bitmap.c | 9 lib/test_kasan.c | 1 lib/zlib_deflate/deflate.c | 85 + lib/zlib_deflate/deflate_syms.c | 1 lib/zlib_deflate/deftree.c | 54 - lib/zlib_deflate/defutil.h | 134 ++ lib/zlib_dfltcc/Makefile | 13 lib/zlib_dfltcc/dfltcc.c | 57 + lib/zlib_dfltcc/dfltcc.h | 155 +++ lib/zlib_dfltcc/dfltcc_deflate.c | 280 ++++++ lib/zlib_dfltcc/dfltcc_inflate.c | 149 +++ lib/zlib_dfltcc/dfltcc_syms.c | 17 lib/zlib_dfltcc/dfltcc_util.h | 123 ++ lib/zlib_inflate/inflate.c | 32 lib/zlib_inflate/inflate.h | 8 lib/zlib_inflate/infutil.h | 18 mm/Makefile | 1 mm/backing-dev.c | 1 mm/debug.c | 18 mm/early_ioremap.c | 8 mm/filemap.c | 34 mm/gup.c | 503 ++++++----- mm/gup_benchmark.c | 9 mm/huge_memory.c | 44 mm/kmemleak.c | 112 +- mm/memblock.c | 22 mm/memcontrol.c | 25 mm/memory_hotplug.c | 24 mm/mempolicy.c | 6 mm/memremap.c | 95 -- mm/migrate.c | 77 + mm/mmap.c | 30 mm/oom_kill.c | 2 mm/page_alloc.c | 83 + mm/page_isolation.c | 69 - mm/page_vma_mapped.c | 12 mm/process_vm_access.c | 32 mm/slub.c | 88 + mm/sparse.c | 2 mm/swap.c | 27 mm/swapfile.c | 2 mm/vmscan.c | 24 mm/zswap.c | 88 + net/xdp/xdp_umem.c | 4 scripts/spelling.txt | 14 tools/testing/selftests/vm/gup_benchmark.c | 6 tools/vm/slabinfo.c | 4 136 files changed, 2790 insertions(+), 1358 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-01-14 0:28 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-01-14 0:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 11 MM fixes, based on b3a987b0264d3ddbb24293ebff10eddfc472f653: Vlastimil Babka <vbabka@suse.cz>: mm, thp: tweak reclaim/compaction effort of local-only and all-node allocations David Hildenbrand <david@redhat.com>: mm/memory_hotplug: don't free usage map when removing a re-added early section "Kirill A. Shutemov" <kirill@shutemov.name>: Patch series "Fix two above-47bit hint address vs. THP bugs": mm/huge_memory.c: thp: fix conflict of above-47bit hint address and PMD alignment mm/shmem.c: thp, shmem: fix conflict of above-47bit hint address and PMD alignment Roman Gushchin <guro@fb.com>: mm: memcg/slab: fix percpu slab vmstats flushing Vlastimil Babka <vbabka@suse.cz>: mm, debug_pagealloc: don't rely on static keys too early Wen Yang <wenyang@linux.alibaba.com>: Patch series "use div64_ul() instead of div_u64() if the divisor is: mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio() mm/page-writeback.c: use div64_ul() for u64-by-unsigned-long divide mm/page-writeback.c: improve arithmetic divisions Adrian Huang <ahuang12@lenovo.com>: mm: memcg/slab: call flush_memcg_workqueue() only if memcg workqueue is valid Yang Shi <yang.shi@linux.alibaba.com>: mm: khugepaged: add trace status description for SCAN_PAGE_HAS_PRIVATE include/linux/mm.h | 18 +++++++++- include/linux/mmzone.h | 5 +-- include/trace/events/huge_memory.h | 3 + init/main.c | 1 mm/huge_memory.c | 38 ++++++++++++++--------- mm/memcontrol.c | 37 +++++----------------- mm/mempolicy.c | 10 ++++-- mm/page-writeback.c | 10 +++--- mm/page_alloc.c | 61 ++++++++++--------------------------- mm/shmem.c | 7 ++-- mm/slab.c | 4 +- mm/slab_common.c | 3 + mm/slub.c | 2 - mm/sparse.c | 9 ++++- mm/vmalloc.c | 4 +- 15 files changed, 102 insertions(+), 110 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2020-01-04 20:55 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2020-01-04 20:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 17 fixes, base on 5613970af3f5f8372c596b138bd64f3918513515: David Hildenbrand <david@redhat.com>: mm/memory_hotplug: shrink zones when offlining memory Chanho Min <chanho.min@lge.com>: mm/zsmalloc.c: fix the migrated zspage statistics. Andrey Konovalov <andreyknvl@google.com>: kcov: fix struct layout for kcov_remote_arg Shakeel Butt <shakeelb@google.com>: memcg: account security cred as well to kmemcg Yang Shi <yang.shi@linux.alibaba.com>: mm: move_pages: return valid node id in status if the page is already on the target node Eric Biggers <ebiggers@google.com>: fs/direct-io.c: include fs/internal.h for missing prototype fs/nsfs.c: include headers for missing declarations fs/namespace.c: make to_mnt_ns() static Nick Desaulniers <ndesaulniers@google.com>: hexagon: parenthesize registers in asm predicates hexagon: work around compiler crash Randy Dunlap <rdunlap@infradead.org>: fs/posix_acl.c: fix kernel-doc warnings Ilya Dryomov <idryomov@gmail.com>: mm/oom: fix pgtables units mismatch in Killed process message Navid Emamdoost <navid.emamdoost@gmail.com>: mm/gup: fix memory leak in __gup_benchmark_ioctl Waiman Long <longman@redhat.com>: mm/hugetlb: defer freeing of huge pages if in non-task context Kai Li <li.kai4@h3c.com>: ocfs2: call journal flush to mark journal as empty after journal recovery when mount Gang He <GHe@suse.com>: ocfs2: fix the crash due to call ocfs2_get_dlm_debug once less Nick Desaulniers <ndesaulniers@google.com>: hexagon: define ioremap_uc Documentation/dev-tools/kcov.rst | 10 +++---- arch/arm64/mm/mmu.c | 4 -- arch/hexagon/include/asm/atomic.h | 8 ++--- arch/hexagon/include/asm/bitops.h | 8 ++--- arch/hexagon/include/asm/cmpxchg.h | 2 - arch/hexagon/include/asm/futex.h | 6 ++-- arch/hexagon/include/asm/io.h | 1 arch/hexagon/include/asm/spinlock.h | 20 +++++++------- arch/hexagon/kernel/stacktrace.c | 4 -- arch/hexagon/kernel/vm_entry.S | 2 - arch/ia64/mm/init.c | 4 -- arch/powerpc/mm/mem.c | 3 -- arch/s390/mm/init.c | 4 -- arch/sh/mm/init.c | 4 -- arch/x86/mm/init_32.c | 4 -- arch/x86/mm/init_64.c | 4 -- fs/direct-io.c | 2 + fs/namespace.c | 2 - fs/nsfs.c | 3 ++ fs/ocfs2/dlmglue.c | 1 fs/ocfs2/journal.c | 8 +++++ fs/posix_acl.c | 7 +++- include/linux/memory_hotplug.h | 7 +++- include/uapi/linux/kcov.h | 10 +++---- kernel/cred.c | 6 ++-- mm/gup_benchmark.c | 8 ++++- mm/hugetlb.c | 51 +++++++++++++++++++++++++++++++++++- mm/memory_hotplug.c | 31 +++++++++++---------- mm/memremap.c | 2 - mm/migrate.c | 23 ++++++++++++---- mm/oom_kill.c | 2 - mm/zsmalloc.c | 5 +++ 32 files changed, 166 insertions(+), 90 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-12-18 4:50 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-12-18 4:50 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-mm, mm-commits 6 fixes based on 2187f215ebaac73ddbd814696d7c7fa34f0c3de0: Andrey Ryabinin <aryabinin@virtuozzo.com>: kasan: fix crashes on access to memory mapped by vm_map_ram() Daniel Axtens <dja@axtens.net>: mm/memory.c: add apply_to_existing_page_range() helper kasan: use apply_to_existing_page_range() for releasing vmalloc shadow kasan: don't assume percpu shadow allocations will succeed Yang Shi <yang.shi@linux.alibaba.com>: mm: vmscan: protect shrinker idr replace with CONFIG_MEMCG Changbin Du <changbin.du@gmail.com>: lib/Kconfig.debug: fix some messed up configurations include/linux/kasan.h | 15 +++-- include/linux/mm.h | 3 + lib/Kconfig.debug | 100 ++++++++++++++++++------------------ mm/kasan/common.c | 36 ++++++++----- mm/memory.c | 136 ++++++++++++++++++++++++++++++++++---------------- mm/vmalloc.c | 133 ++++++++++++++++++++++++++++-------------------- mm/vmscan.c | 2 7 files changed, 260 insertions(+), 165 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-12-05 0:48 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-12-05 0:48 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm Most of the rest of MM and various other things. Some Kconfig rework still awaits merges of dependent trees from linux-next. 86 patches, based on 63de37476ebd1e9bab6a9e17186dc5aa1da9ea99. Subsystems affected by this patch series: mm/hotfixes mm/memcg mm/vmstat mm/thp procfs sysctl misc notifiers core-kernel bitops lib checkpatch epoll binfmt init rapidio uaccess kcov ubsan ipc bitmap mm/pagemap Subsystem: mm/hotfixes zhong jiang <zhongjiang@huawei.com>: mm/kasan/common.c: fix compile error Subsystem: mm/memcg Roman Gushchin <guro@fb.com>: mm: memcg/slab: wait for !root kmem_cache refcnt killing on root kmem_cache destruction Subsystem: mm/vmstat Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm/vmstat: add helpers to get vmstat item names for each enum type mm/memcontrol: use vmstat names for printing statistics Subsystem: mm/thp Yu Zhao <yuzhao@google.com>: mm/memory.c: replace is_zero_pfn with is_huge_zero_pmd for thp Subsystem: procfs Alexey Dobriyan <adobriyan@gmail.com>: proc: change ->nlink under proc_subdir_lock fs/proc/generic.c: delete useless "len" variable fs/proc/internal.h: shuffle "struct pde_opener" Miaohe Lin <linmiaohe@huawei.com>: include/linux/proc_fs.h: fix confusing macro arg name Krzysztof Kozlowski <krzk@kernel.org>: fs/proc/Kconfig: fix indentation Subsystem: sysctl Alessio Balsini <balsini@android.com>: include/linux/sysctl.h: inline braces for ctl_table and ctl_table_header Subsystem: misc Stephen Boyd <swboyd@chromium.org>: .gitattributes: use 'dts' diff driver for dts files Rikard Falkeborn <rikard.falkeborn@gmail.com>: linux/build_bug.h: change type to int Masahiro Yamada <yamada.masahiro@socionext.com>: linux/scc.h: make uapi linux/scc.h self-contained Krzysztof Kozlowski <krzk@kernel.org>: arch/Kconfig: fix indentation Joe Perches <joe@perches.com>: scripts/get_maintainer.pl: add signatures from Fixes: <badcommit> lines in commit message Andy Shevchenko <andriy.shevchenko@linux.intel.com>: kernel.h: update comment about simple_strto<foo>() functions auxdisplay: charlcd: deduplicate simple_strtoul() Subsystem: notifiers Xiaoming Ni <nixiaoming@huawei.com>: kernel/notifier.c: intercept duplicate registrations to avoid infinite loops kernel/notifier.c: remove notifier_chain_cond_register() kernel/notifier.c: remove blocking_notifier_chain_cond_register() Subsystem: core-kernel Nathan Chancellor <natechancellor@gmail.com>: kernel/profile.c: use cpumask_available to check for NULL cpumask Joe Perches <joe@perches.com>: kernel/sys.c: avoid copying possible padding bytes in copy_to_user Subsystem: bitops William Breathitt Gray <vilhelm.gray@gmail.com>: bitops: introduce the for_each_set_clump8 macro lib/test_bitmap.c: add for_each_set_clump8 test cases gpio: 104-dio-48e: utilize for_each_set_clump8 macro gpio: 104-idi-48: utilize for_each_set_clump8 macro gpio: gpio-mm: utilize for_each_set_clump8 macro gpio: ws16c48: utilize for_each_set_clump8 macro gpio: pci-idio-16: utilize for_each_set_clump8 macro gpio: pcie-idio-24: utilize for_each_set_clump8 macro gpio: uniphier: utilize for_each_set_clump8 macro gpio: 74x164: utilize the for_each_set_clump8 macro thermal: intel: intel_soc_dts_iosf: Utilize for_each_set_clump8 macro gpio: pisosr: utilize the for_each_set_clump8 macro gpio: max3191x: utilize the for_each_set_clump8 macro gpio: pca953x: utilize the for_each_set_clump8 macro Subsystem: lib Wei Yang <richardw.yang@linux.intel.com>: lib/rbtree: set successor's parent unconditionally lib/rbtree: get successor's color directly Laura Abbott <labbott@redhat.com>: lib/test_meminit.c: add bulk alloc/free tests Trent Piepho <tpiepho@gmail.com>: lib/math/rational.c: fix possible incorrect result from rational fractions helper Huang Shijie <sjhuang@iluvatar.ai>: lib/genalloc.c: export symbol addr_in_gen_pool lib/genalloc.c: rename addr_in_gen_pool to gen_pool_has_addr Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: improve ignoring CamelCase SI style variants like mA checkpatch: reduce is_maintained_obsolete lookup runtime Subsystem: epoll Jason Baron <jbaron@akamai.com>: epoll: simplify ep_poll_safewake() for CONFIG_DEBUG_LOCK_ALLOC Heiher <r@hev.cc>: fs/epoll: remove unnecessary wakeups of nested epoll selftests: add epoll selftests Subsystem: binfmt Alexey Dobriyan <adobriyan@gmail.com>: fs/binfmt_elf.c: delete unused "interp_map_addr" argument fs/binfmt_elf.c: extract elf_read() function Subsystem: init Krzysztof Kozlowski <krzk@kernel.org>: init/Kconfig: fix indentation Subsystem: rapidio "Ben Dooks (Codethink)" <ben.dooks@codethink.co.uk>: drivers/rapidio/rio-driver.c: fix missing include of <linux/rio_drv.h> drivers/rapidio/rio-access.c: fix missing include of <linux/rio_drv.h> Subsystem: uaccess Daniel Vetter <daniel.vetter@ffwll.ch>: drm: limit to INT_MAX in create_blob ioctl Kees Cook <keescook@chromium.org>: uaccess: disallow > INT_MAX copy sizes Subsystem: kcov Andrey Konovalov <andreyknvl@google.com>: Patch series " kcov: collect coverage from usb and vhost", v3: kcov: remote coverage support usb, kcov: collect coverage from hub_event vhost, kcov: collect coverage from vhost_worker Subsystem: ubsan Julien Grall <julien.grall@arm.com>: lib/ubsan: don't serialize UBSAN report Subsystem: ipc Masahiro Yamada <yamada.masahiro@socionext.com>: arch: ipcbuf.h: make uapi asm/ipcbuf.h self-contained arch: msgbuf.h: make uapi asm/msgbuf.h self-contained arch: sembuf.h: make uapi asm/sembuf.h self-contained Subsystem: bitmap Andy Shevchenko <andriy.shevchenko@linux.intel.com>: Patch series "gpio: pca953x: Convert to bitmap (extended) API", v2: lib/test_bitmap: force argument of bitmap_parselist_user() to proper address space lib/test_bitmap: undefine macros after use lib/test_bitmap: name EXP_BYTES properly lib/test_bitmap: rename exp to exp1 to avoid ambiguous name lib/test_bitmap: move exp1 and exp2 upper for others to use lib/test_bitmap: fix comment about this file lib/bitmap: introduce bitmap_replace() helper gpio: pca953x: remove redundant variable and check in IRQ handler gpio: pca953x: use input from regs structure in pca953x_irq_pending() gpio: pca953x: convert to use bitmap API gpio: pca953x: tighten up indentation Subsystem: mm/pagemap Mike Rapoport <rppt@linux.ibm.com>: Patch series "mm: remove __ARCH_HAS_4LEVEL_HACK", v13: alpha: use pgtable-nopud instead of 4level-fixup arm: nommu: use pgtable-nopud instead of 4level-fixup c6x: use pgtable-nopud instead of 4level-fixup m68k: nommu: use pgtable-nopud instead of 4level-fixup m68k: mm: use pgtable-nopXd instead of 4level-fixup microblaze: use pgtable-nopmd instead of 4level-fixup nds32: use pgtable-nopmd instead of 4level-fixup parisc: use pgtable-nopXd instead of 4level-fixup Helge Deller <deller@gmx.de>: parisc/hugetlb: use pgtable-nopXd instead of 4level-fixup Mike Rapoport <rppt@linux.ibm.com>: sparc32: use pgtable-nopud instead of 4level-fixup um: remove unused pxx_offset_proc() and addr_pte() functions um: add support for folded p4d page tables mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h .gitattributes | 2 Documentation/core-api/genalloc.rst | 2 Documentation/dev-tools/kcov.rst | 129 arch/Kconfig | 22 arch/alpha/include/asm/mmzone.h | 1 arch/alpha/include/asm/pgalloc.h | 4 arch/alpha/include/asm/pgtable.h | 24 arch/alpha/mm/init.c | 12 arch/arm/include/asm/pgtable.h | 2 arch/arm/mm/dma-mapping.c | 2 arch/c6x/include/asm/pgtable.h | 2 arch/m68k/include/asm/mcf_pgalloc.h | 7 arch/m68k/include/asm/mcf_pgtable.h | 28 arch/m68k/include/asm/mmu_context.h | 12 arch/m68k/include/asm/motorola_pgalloc.h | 4 arch/m68k/include/asm/motorola_pgtable.h | 32 arch/m68k/include/asm/page.h | 9 arch/m68k/include/asm/pgtable_mm.h | 11 arch/m68k/include/asm/pgtable_no.h | 2 arch/m68k/include/asm/sun3_pgalloc.h | 5 arch/m68k/include/asm/sun3_pgtable.h | 18 arch/m68k/kernel/sys_m68k.c | 10 arch/m68k/mm/init.c | 6 arch/m68k/mm/kmap.c | 39 arch/m68k/mm/mcfmmu.c | 16 arch/m68k/mm/motorola.c | 17 arch/m68k/sun3x/dvma.c | 7 arch/microblaze/include/asm/page.h | 3 arch/microblaze/include/asm/pgalloc.h | 16 arch/microblaze/include/asm/pgtable.h | 32 arch/microblaze/kernel/signal.c | 10 arch/microblaze/mm/init.c | 7 arch/microblaze/mm/pgtable.c | 13 arch/mips/include/uapi/asm/msgbuf.h | 1 arch/mips/include/uapi/asm/sembuf.h | 2 arch/nds32/include/asm/page.h | 3 arch/nds32/include/asm/pgalloc.h | 3 arch/nds32/include/asm/pgtable.h | 12 arch/nds32/include/asm/tlb.h | 1 arch/nds32/kernel/pm.c | 4 arch/nds32/mm/fault.c | 16 arch/nds32/mm/init.c | 11 arch/nds32/mm/mm-nds32.c | 6 arch/nds32/mm/proc.c | 26 arch/parisc/include/asm/page.h | 30 arch/parisc/include/asm/pgalloc.h | 41 arch/parisc/include/asm/pgtable.h | 52 arch/parisc/include/asm/tlb.h | 2 arch/parisc/include/uapi/asm/msgbuf.h | 1 arch/parisc/include/uapi/asm/sembuf.h | 1 arch/parisc/kernel/cache.c | 13 arch/parisc/kernel/pci-dma.c | 9 arch/parisc/mm/fixmap.c | 10 arch/parisc/mm/hugetlbpage.c | 18 arch/powerpc/include/uapi/asm/msgbuf.h | 2 arch/powerpc/include/uapi/asm/sembuf.h | 2 arch/s390/include/uapi/asm/ipcbuf.h | 2 arch/sparc/include/asm/pgalloc_32.h | 6 arch/sparc/include/asm/pgtable_32.h | 28 arch/sparc/include/uapi/asm/ipcbuf.h | 2 arch/sparc/include/uapi/asm/msgbuf.h | 2 arch/sparc/include/uapi/asm/sembuf.h | 2 arch/sparc/mm/fault_32.c | 11 arch/sparc/mm/highmem.c | 6 arch/sparc/mm/io-unit.c | 6 arch/sparc/mm/iommu.c | 6 arch/sparc/mm/srmmu.c | 51 arch/um/include/asm/pgtable-2level.h | 1 arch/um/include/asm/pgtable-3level.h | 1 arch/um/include/asm/pgtable.h | 3 arch/um/kernel/mem.c | 8 arch/um/kernel/skas/mmu.c | 12 arch/um/kernel/skas/uaccess.c | 7 arch/um/kernel/tlb.c | 85 arch/um/kernel/trap.c | 4 arch/x86/include/uapi/asm/msgbuf.h | 3 arch/x86/include/uapi/asm/sembuf.h | 2 arch/xtensa/include/uapi/asm/ipcbuf.h | 2 arch/xtensa/include/uapi/asm/msgbuf.h | 2 arch/xtensa/include/uapi/asm/sembuf.h | 1 drivers/auxdisplay/charlcd.c | 34 drivers/base/node.c | 9 drivers/gpio/gpio-104-dio-48e.c | 75 drivers/gpio/gpio-104-idi-48.c | 36 drivers/gpio/gpio-74x164.c | 19 drivers/gpio/gpio-gpio-mm.c | 75 drivers/gpio/gpio-max3191x.c | 19 drivers/gpio/gpio-pca953x.c | 209 drivers/gpio/gpio-pci-idio-16.c | 75 drivers/gpio/gpio-pcie-idio-24.c | 111 drivers/gpio/gpio-pisosr.c | 12 drivers/gpio/gpio-uniphier.c | 13 drivers/gpio/gpio-ws16c48.c | 73 drivers/gpu/drm/drm_property.c | 2 drivers/misc/sram-exec.c | 2 drivers/rapidio/rio-access.c | 2 drivers/rapidio/rio-driver.c | 1 drivers/thermal/intel/intel_soc_dts_iosf.c | 31 drivers/thermal/intel/intel_soc_dts_iosf.h | 2 drivers/usb/core/hub.c | 5 drivers/vhost/vhost.c | 6 drivers/vhost/vhost.h | 1 fs/binfmt_elf.c | 56 fs/eventpoll.c | 52 fs/proc/Kconfig | 8 fs/proc/generic.c | 37 fs/proc/internal.h | 2 include/asm-generic/4level-fixup.h | 39 include/asm-generic/bitops/find.h | 17 include/linux/bitmap.h | 51 include/linux/bitops.h | 12 include/linux/build_bug.h | 4 include/linux/genalloc.h | 2 include/linux/kcov.h | 23 include/linux/kernel.h | 19 include/linux/mm.h | 10 include/linux/notifier.h | 4 include/linux/proc_fs.h | 4 include/linux/rbtree_augmented.h | 6 include/linux/sched.h | 8 include/linux/sysctl.h | 6 include/linux/thread_info.h | 2 include/linux/vmstat.h | 54 include/uapi/asm-generic/ipcbuf.h | 2 include/uapi/asm-generic/msgbuf.h | 2 include/uapi/asm-generic/sembuf.h | 1 include/uapi/linux/kcov.h | 28 include/uapi/linux/scc.h | 1 init/Kconfig | 78 kernel/dma/remap.c | 2 kernel/kcov.c | 547 + kernel/notifier.c | 45 kernel/profile.c | 6 kernel/sys.c | 4 lib/bitmap.c | 12 lib/find_bit.c | 14 lib/genalloc.c | 7 lib/math/rational.c | 63 lib/test_bitmap.c | 206 lib/test_meminit.c | 20 lib/ubsan.c | 64 mm/kasan/common.c | 1 mm/memcontrol.c | 52 mm/memory.c | 10 mm/slab_common.c | 12 mm/vmstat.c | 60 net/sunrpc/rpc_pipe.c | 2 scripts/checkpatch.pl | 13 scripts/get_maintainer.pl | 38 tools/testing/selftests/Makefile | 1 tools/testing/selftests/filesystems/epoll/.gitignore | 1 tools/testing/selftests/filesystems/epoll/Makefile | 7 tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 3074 ++++++++++ usr/include/Makefile | 4 154 files changed, 5270 insertions(+), 1360 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-12-01 1:47 Andrew Morton 2019-12-01 5:17 ` incoming James Bottomley 2019-12-01 21:07 ` incoming Linus Torvalds 0 siblings, 2 replies; 530+ messages in thread From: Andrew Morton @ 2019-12-01 1:47 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - a small number of updates to scripts/, ocfs2 and fs/buffer.c - most of MM. I still have quite a lot of material (mostly not MM) staged after linux-next due to -next dependencies. I'll send thos across next week as the preprequisites get merged up. 158 patches, based on 32ef9553635ab1236c33951a8bd9b5af1c3b1646. Subsystems affected by this patch series: scripts ocfs2 vfs mm/slab mm/slub mm/pagecache mm/gup mm/swap mm/memcg mm/pagemap mm/memfd mm/memory-failure mm/memory-hotplug mm/sparsemem mm/vmalloc mm/kasan mm/pagealloc mm/vmscan mm/proc mm/z3fold mm/mempolicy mm/memblock mm/hugetlbfs mm/hugetlb mm/migration mm/thp mm/cma mm/autonuma mm/page-poison mm/mmap mm/madvise mm/userfaultfd mm/shmem mm/cleanups mm/support Subsystem: scripts Colin Ian King <colin.king@canonical.com>: scripts/spelling.txt: add more spellings to spelling.txt Subsystem: ocfs2 Ding Xiang <dingxiang@cmss.chinamobile.com>: ocfs2: fix passing zero to 'PTR_ERR' warning Subsystem: vfs Saurav Girepunje <saurav.girepunje@gmail.com>: fs/buffer.c: fix use true/false for bool type Ben Dooks <ben.dooks@codethink.co.uk>: fs/buffer.c: include internal.h for missing declarations Subsystem: mm/slab Pengfei Li <lpf.vector@gmail.com>: Patch series "mm, slab: Make kmalloc_info[] contain all types of names", v6: mm, slab: make kmalloc_info[] contain all types of names mm, slab: remove unused kmalloc_size() mm, slab_common: use enum kmalloc_cache_type to iterate over kmalloc caches Subsystem: mm/slub Miles Chen <miles.chen@mediatek.com>: mm: slub: print the offset of fault addresses Yu Zhao <yuzhao@google.com>: mm/slub.c: update comments mm/slub.c: clean up validate_slab() Subsystem: mm/pagecache Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm/filemap.c: remove redundant cache invalidation after async direct-io write fs/direct-io.c: keep dio_warn_stale_pagecache() when CONFIG_BLOCK=n mm/filemap.c: warn if stale pagecache is left after direct write Subsystem: mm/gup zhong jiang <zhongjiang@huawei.com>: mm/gup.c: allow CMA migration to propagate errors back to caller Liu Xiang <liuxiang_1999@126.com>: mm/gup.c: fix comments of __get_user_pages() and get_user_pages_remote() Subsystem: mm/swap Naohiro Aota <naohiro.aota@wdc.com>: mm, swap: disallow swapon() on zoned block devices Fengguang Wu <fengguang.wu@intel.com>: mm/swap.c: trivial mark_page_accessed() cleanup Subsystem: mm/memcg Yafang Shao <laoar.shao@gmail.com>: mm, memcg: clean up reclaim iter array Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: remove dead code from memory_max_write() mm: memcontrol: try harder to set a new memory.high Hao Lee <haolee.swjtu@gmail.com>: include/linux/memcontrol.h: fix comments based on per-node memcg Shakeel Butt <shakeelb@google.com>: mm: vmscan: memcontrol: remove mem_cgroup_select_victim_node() Chris Down <chris@chrisdown.name>: Documentation/admin-guide/cgroup-v2.rst: document why inactive_X + active_X may not equal X Subsystem: mm/pagemap Johannes Weiner <hannes@cmpxchg.org>: mm: drop mmap_sem before calling balance_dirty_pages() in write fault "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: shmem: pin the file in shmem_fault() if mmap_sem is dropped "Joel Fernandes (Google)" <joel@joelfernandes.org>: mm: emit tracepoint when RSS changes rss_stat: add support to detect RSS updates of external mm Wei Yang <richardw.yang@linux.intel.com>: mm/mmap.c: remove a never-triggered warning in __vma_adjust() Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm/swap.c: piggyback lru_add_drain_all() calls Wei Yang <richardw.yang@linux.intel.com>: mm/mmap.c: prev could be retrieved from vma->vm_prev mm/mmap.c: __vma_unlink_prev() is not necessary now mm/mmap.c: extract __vma_unlink_list() as counterpart for __vma_link_list() mm/mmap.c: rb_parent is not necessary in __vma_link_list() mm/rmap.c: don't reuse anon_vma if we just want a copy mm/rmap.c: reuse mergeable anon_vma as parent when fork Gaowei Pu <pugaowei@gmail.com>: mm/mmap.c: use IS_ERR_VALUE to check return value of get_unmapped_area Vineet Gupta <Vineet.Gupta1@synopsys.com>: Patch series "elide extraneous generated code for folded p4d/pud/pmd", v3: ARC: mm: remove __ARCH_USE_5LEVEL_HACK asm-generic/tlb: stub out pud_free_tlb() if nopud ... asm-generic/tlb: stub out p4d_free_tlb() if nop4d ... asm-generic/tlb: stub out pmd_free_tlb() if nopmd asm-generic/mm: stub out p{4,u}d_clear_bad() if __PAGETABLE_P{4,U}D_FOLDED Miles Chen <miles.chen@mediatek.com>: mm/rmap.c: fix outdated comment in page_get_anon_vma() Yang Shi <yang.shi@linux.alibaba.com>: mm/rmap.c: use VM_BUG_ON_PAGE() in __page_check_anon_rmap() Thomas Hellstrom <thellstrom@vmware.com>: mm: move the backup x_devmap() functions to asm-generic/pgtable.h mm/memory.c: fix a huge pud insertion race during faulting Steven Price <steven.price@arm.com>: Patch series "Generic page walk and ptdump", v15: mm: add generic p?d_leaf() macros arc: mm: add p?d_leaf() definitions arm: mm: add p?d_leaf() definitions arm64: mm: add p?d_leaf() definitions mips: mm: add p?d_leaf() definitions powerpc: mm: add p?d_leaf() definitions riscv: mm: add p?d_leaf() definitions s390: mm: add p?d_leaf() definitions sparc: mm: add p?d_leaf() definitions x86: mm: add p?d_leaf() definitions mm: pagewalk: add p4d_entry() and pgd_entry() mm: pagewalk: allow walking without vma mm: pagewalk: add test_p?d callbacks mm: pagewalk: add 'depth' parameter to pte_hole x86: mm: point to struct seq_file from struct pg_state x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct x86: mm: convert ptdump_walk_pgd_level_debugfs() to take an mm_struct x86: mm: convert ptdump_walk_pgd_level_core() to take an mm_struct mm: add generic ptdump x86: mm: convert dump_pagetables to use walk_page_range arm64: mm: convert mm/dump.c to use walk_page_range() arm64: mm: display non-present entries in ptdump mm: ptdump: reduce level numbers by 1 in note_page() Subsystem: mm/memfd Nicolas Geoffray <ngeoffray@google.com>: mm, memfd: fix COW issue on MAP_PRIVATE and F_SEAL_FUTURE_WRITE mappings "Joel Fernandes (Google)" <joel@joelfernandes.org>: memfd: add test for COW on MAP_PRIVATE and F_SEAL_FUTURE_WRITE mappings Subsystem: mm/memory-failure Jane Chu <jane.chu@oracle.com>: mm/memory-failure.c clean up around tk pre-allocation Naoya Horiguchi <nao.horiguchi@gmail.com>: mm, soft-offline: convert parameter to pfn Yunfeng Ye <yeyunfeng@huawei.com>: mm/memory-failure.c: use page_shift() in add_to_kill() Subsystem: mm/memory-hotplug Anshuman Khandual <anshuman.khandual@arm.com>: mm/hotplug: reorder memblock_[free|remove]() calls in try_remove_memory() Alastair D'Silva <alastair@d-silva.org>: mm/memory_hotplug.c: add a bounds check to __add_pages() David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: Export generic_online_page()": mm/memory_hotplug: export generic_online_page() hv_balloon: use generic_online_page() mm/memory_hotplug: remove __online_page_free() and __online_page_increment_counters() Patch series "mm: Memory offlining + page isolation cleanups", v2: mm/page_alloc.c: don't set pages PageReserved() when offlining mm/page_isolation.c: convert SKIP_HWPOISON to MEMORY_OFFLINE "Ben Dooks (Codethink)" <ben.dooks@codethink.co.uk>: include/linux/memory_hotplug.h: move definitions of {set,clear}_zone_contiguous David Hildenbrand <david@redhat.com>: drivers/base/memory.c: drop the mem_sysfs_mutex mm/memory_hotplug.c: don't allow to online/offline memory blocks with holes Subsystem: mm/sparsemem Vincent Whitchurch <vincent.whitchurch@axis.com>: mm/sparse: consistently do not zero memmap Ilya Leoshkevich <iii@linux.ibm.com>: mm/sparse.c: mark populate_section_memmap as __meminit Michal Hocko <mhocko@suse.com>: mm/sparse.c: do not waste pre allocated memmap space Subsystem: mm/vmalloc Liu Xiang <liuxiang_1999@126.com>: mm/vmalloc.c: remove unnecessary highmem_mask from parameter of gfpflags_allow_blocking() "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: remove preempt_disable/enable when doing preloading mm/vmalloc: respect passed gfp_mask when doing preloading mm/vmalloc: add more comments to the adjust_va_to_fit_type() Anders Roxell <anders.roxell@linaro.org>: selftests: vm: add fragment CONFIG_TEST_VMALLOC "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: rework vmap_area_lock Subsystem: mm/kasan Daniel Axtens <dja@axtens.net>: Patch series "kasan: support backing vmalloc space with real shadow: kasan: support backing vmalloc space with real shadow memory kasan: add test for vmalloc fork: support VMAP_STACK with KASAN_VMALLOC x86/kasan: support KASAN_VMALLOC Subsystem: mm/pagealloc Anshuman Khandual <anshuman.khandual@arm.com>: mm/page_alloc: add alloc_contig_pages() Mel Gorman <mgorman@techsingularity.net>: mm, pcp: share common code between memory hotplug and percpu sysctl handler mm, pcpu: make zone pcp updates and reset internal to the mm Hao Lee <haolee.swjtu@gmail.com>: include/linux/mmzone.h: fix comment for ISOLATE_UNMAPPED macro lijiazi <jqqlijiazi@gmail.com>: mm/page_alloc.c: print reserved_highatomic info Subsystem: mm/vmscan Andrey Ryabinin <aryabinin@virtuozzo.com>: mm/vmscan: remove unused lru_pages argument Yang Shi <yang.shi@linux.alibaba.com>: mm/vmscan.c: remove unused scan_control parameter from pageout() Johannes Weiner <hannes@cmpxchg.org>: Patch series "mm: vmscan: cgroup-related cleanups": mm: vmscan: simplify lruvec_lru_size() mm: clean up and clarify lruvec lookup procedure mm: vmscan: move inactive_list_is_low() swap check to the caller mm: vmscan: naming fixes: global_reclaim() and sane_reclaim() mm: vmscan: replace shrink_node() loop with a retry jump mm: vmscan: turn shrink_node_memcg() into shrink_lruvec() mm: vmscan: split shrink_node() into node part and memcgs part mm: vmscan: harmonize writeback congestion tracking for nodes & memcgs Patch series "mm: fix page aging across multiple cgroups": mm: vmscan: move file exhaustion detection to the node level mm: vmscan: detect file thrashing at the reclaim root mm: vmscan: enforce inactive:active ratio at the reclaim root Xianting Tian <xianting_tian@126.com>: mm/vmscan.c: fix typo in comment Subsystem: mm/proc Johannes Weiner <hannes@cmpxchg.org>: kernel: sysctl: make drop_caches write-only Subsystem: mm/z3fold Vitaly Wool <vitaly.wool@konsulko.com>: mm/z3fold.c: add inter-page compaction Subsystem: mm/mempolicy Li Xinhai <lixinhai.lxh@gmail.com>: Patch series "mm: Fix checking unmapped holes for mbind", v4: mm/mempolicy.c: check range first in queue_pages_test_walk mm/mempolicy.c: fix checking unmapped holes for mbind Subsystem: mm/memblock Cao jin <caoj.fnst@cn.fujitsu.com>: mm/memblock.c: cleanup doc mm/memblock: correct doc for function Yunfeng Ye <yeyunfeng@huawei.com>: mm: support memblock alloc on the exact node for sparse_buffer_init() Subsystem: mm/hugetlbfs Mike Kravetz <mike.kravetz@oracle.com>: hugetlbfs: hugetlb_fault_mutex_hash() cleanup mm/hugetlbfs: fix error handling when setting up mounts Patch series "hugetlbfs: convert macros to static inline, fix sparse warning": powerpc/mm: remove pmd_huge/pud_huge stubs and include hugetlb.h hugetlbfs: convert macros to static inline, fix sparse warning Piotr Sarna <p.sarna@tlen.pl>: hugetlbfs: add O_TMPFILE support Waiman Long <longman@redhat.com>: hugetlbfs: take read_lock on i_mmap for PMD sharing Subsystem: mm/hugetlb Mina Almasry <almasrymina@google.com>: hugetlb: region_chg provides only cache entry hugetlb: remove duplicated code Wei Yang <richardw.yang@linux.intel.com>: hugetlb: remove unused hstate in hugetlb_fault_mutex_hash() Zhigang Lu <tonnylu@tencent.com>: mm/hugetlb: avoid looping to the same hugepage if !pages and !vmas zhong jiang <zhongjiang@huawei.com>: mm/huge_memory.c: split_huge_pages_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE Subsystem: mm/migration Yang Shi <yang.shi@linux.alibaba.com>: mm/migrate.c: handle freed page at the first place Subsystem: mm/thp "Kirill A. Shutemov" <kirill@shutemov.name>: mm, thp: do not queue fully unmapped pages for deferred split Song Liu <songliubraving@fb.com>: mm/thp: flush file for !is_shmem PageDirty() case in collapse_file() Subsystem: mm/cma Yunfeng Ye <yeyunfeng@huawei.com>: mm/cma.c: switch to bitmap_zalloc() for cma bitmap allocation zhong jiang <zhongjiang@huawei.com>: mm/cma_debug.c: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops Subsystem: mm/autonuma Huang Ying <ying.huang@intel.com>: autonuma: fix watermark checking in migrate_balanced_pgdat() autonuma: reduce cache footprint when scanning page tables Subsystem: mm/page-poison zhong jiang <zhongjiang@huawei.com>: mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops Subsystem: mm/mmap Wei Yang <richardw.yang@linux.intel.com>: mm/mmap.c: make vma_merge() comment more easy to understand Subsystem: mm/madvise Yunfeng Ye <yeyunfeng@huawei.com>: mm/madvise.c: replace with page_size() in madvise_inject_error() Wei Yang <richardw.yang@linux.intel.com>: mm/madvise.c: use PAGE_ALIGN[ED] for range checking Subsystem: mm/userfaultfd Wei Yang <richardw.yang@linux.intel.com>: userfaultfd: use vma_pagesize for all huge page size calculation userfaultfd: remove unnecessary WARN_ON() in __mcopy_atomic_hugetlb() userfaultfd: wrap the common dst_vma check into an inlined function Andrea Arcangeli <aarcange@redhat.com>: fs/userfaultfd.c: wp: clear VM_UFFD_MISSING or VM_UFFD_WP during userfaultfd_register() Mike Rapoport <rppt@linux.ibm.com>: userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK Subsystem: mm/shmem Colin Ian King <colin.king@canonical.com>: mm/shmem.c: make array 'values' static const, makes object smaller Yang Shi <yang.shi@linux.alibaba.com>: mm: shmem: use proper gfp flags for shmem_writepage() Chen Jun <chenjun102@huawei.com>: mm/shmem.c: cast the type of unmap_start to u64 Subsystem: mm/cleanups Hao Lee <haolee.swjtu@gmail.com>: mm: fix struct member name in function comments Wei Yang <richardw.yang@linux.intel.com>: mm: fix typos in comments when calling __SetPageUptodate() Souptick Joarder <jrdr.linux@gmail.com>: mm/memory_hotplug.c: remove __online_page_set_limits() Krzysztof Kozlowski <krzk@kernel.org>: mm/Kconfig: fix indentation Randy Dunlap <rdunlap@infradead.org>: mm/Kconfig: fix trivial help text punctuation Subsystem: mm/support Minchan Kim <minchan@google.com>: mm/page_io.c: annotate refault stalls from swap_readpage Documentation/admin-guide/cgroup-v2.rst | 7 Documentation/dev-tools/kasan.rst | 63 + arch/Kconfig | 9 arch/arc/include/asm/pgtable.h | 2 arch/arc/mm/fault.c | 10 arch/arc/mm/highmem.c | 4 arch/arm/include/asm/pgtable-2level.h | 1 arch/arm/include/asm/pgtable-3level.h | 1 arch/arm64/Kconfig | 1 arch/arm64/Kconfig.debug | 19 arch/arm64/include/asm/pgtable.h | 2 arch/arm64/include/asm/ptdump.h | 8 arch/arm64/mm/Makefile | 4 arch/arm64/mm/dump.c | 148 +--- arch/arm64/mm/mmu.c | 4 arch/arm64/mm/ptdump_debugfs.c | 2 arch/mips/include/asm/pgtable.h | 5 arch/powerpc/include/asm/book3s/64/pgtable-4k.h | 3 arch/powerpc/include/asm/book3s/64/pgtable-64k.h | 3 arch/powerpc/include/asm/book3s/64/pgtable.h | 30 arch/powerpc/mm/book3s64/radix_pgtable.c | 1 arch/riscv/include/asm/pgtable-64.h | 7 arch/riscv/include/asm/pgtable.h | 7 arch/s390/include/asm/pgtable.h | 2 arch/sparc/include/asm/pgtable_64.h | 2 arch/x86/Kconfig | 2 arch/x86/Kconfig.debug | 20 arch/x86/include/asm/pgtable.h | 10 arch/x86/mm/Makefile | 4 arch/x86/mm/debug_pagetables.c | 8 arch/x86/mm/dump_pagetables.c | 431 +++--------- arch/x86/mm/kasan_init_64.c | 61 + arch/x86/platform/efi/efi_32.c | 2 arch/x86/platform/efi/efi_64.c | 4 drivers/base/memory.c | 40 - drivers/firmware/efi/arm-runtime.c | 2 drivers/hv/hv_balloon.c | 4 drivers/xen/balloon.c | 1 fs/buffer.c | 6 fs/direct-io.c | 21 fs/hugetlbfs/inode.c | 67 + fs/ocfs2/acl.c | 4 fs/proc/task_mmu.c | 4 fs/userfaultfd.c | 21 include/asm-generic/4level-fixup.h | 1 include/asm-generic/5level-fixup.h | 1 include/asm-generic/pgtable-nop4d.h | 2 include/asm-generic/pgtable-nopmd.h | 2 include/asm-generic/pgtable-nopud.h | 2 include/asm-generic/pgtable.h | 71 ++ include/asm-generic/tlb.h | 4 include/linux/fs.h | 6 include/linux/gfp.h | 2 include/linux/hugetlb.h | 142 +++- include/linux/kasan.h | 31 include/linux/memblock.h | 3 include/linux/memcontrol.h | 51 - include/linux/memory_hotplug.h | 11 include/linux/mm.h | 42 - include/linux/mmzone.h | 34 include/linux/moduleloader.h | 2 include/linux/page-isolation.h | 4 include/linux/pagewalk.h | 42 - include/linux/ptdump.h | 22 include/linux/slab.h | 20 include/linux/string.h | 2 include/linux/swap.h | 2 include/linux/vmalloc.h | 12 include/trace/events/kmem.h | 53 + kernel/events/uprobes.c | 2 kernel/fork.c | 4 kernel/sysctl.c | 2 lib/Kconfig.kasan | 16 lib/test_kasan.c | 26 lib/vsprintf.c | 40 - mm/Kconfig | 40 - mm/Kconfig.debug | 21 mm/Makefile | 1 mm/cma.c | 6 mm/cma_debug.c | 10 mm/filemap.c | 56 - mm/gup.c | 40 - mm/hmm.c | 8 mm/huge_memory.c | 2 mm/hugetlb.c | 298 ++------ mm/hwpoison-inject.c | 4 mm/internal.h | 27 mm/kasan/common.c | 233 ++++++ mm/kasan/generic_report.c | 3 mm/kasan/kasan.h | 1 mm/khugepaged.c | 18 mm/madvise.c | 14 mm/memblock.c | 113 ++- mm/memcontrol.c | 167 ---- mm/memory-failure.c | 61 - mm/memory.c | 56 + mm/memory_hotplug.c | 86 +- mm/mempolicy.c | 59 + mm/migrate.c | 21 mm/mincore.c | 1 mm/mmap.c | 75 -- mm/mprotect.c | 8 mm/mremap.c | 4 mm/nommu.c | 10 mm/page_alloc.c | 137 +++ mm/page_io.c | 15 mm/page_isolation.c | 12 mm/pagewalk.c | 126 ++- mm/pgtable-generic.c | 9 mm/ptdump.c | 167 ++++ mm/rmap.c | 65 + mm/shmem.c | 29 mm/slab.c | 7 mm/slab.h | 6 mm/slab_common.c | 101 +- mm/slub.c | 36 - mm/sparse.c | 22 mm/swap.c | 29 mm/swapfile.c | 7 mm/userfaultfd.c | 77 +- mm/util.c | 22 mm/vmalloc.c | 196 +++-- mm/vmscan.c | 798 +++++++++++------------ mm/workingset.c | 75 +- mm/z3fold.c | 375 ++++++++-- scripts/spelling.txt | 28 tools/testing/selftests/memfd/memfd_test.c | 36 + tools/testing/selftests/vm/config | 1 128 files changed, 3409 insertions(+), 2121 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-12-01 1:47 incoming Andrew Morton @ 2019-12-01 5:17 ` James Bottomley 2019-12-01 21:07 ` incoming Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: James Bottomley @ 2019-12-01 5:17 UTC (permalink / raw) To: Andrew Morton, Linus Torvalds; +Cc: mm-commits, linux-mm On Sat, 2019-11-30 at 17:47 -0800, Andrew Morton wrote: > - a small number of updates to scripts/, ocfs2 and fs/buffer.c > > - most of MM. I still have quite a lot of material (mostly not MM) > staged after linux-next due to -next dependencies. I'll send thos > across next week as the preprequisites get merged up. > > 158 patches, based on 32ef9553635ab1236c33951a8bd9b5af1c3b1646. Hey, Andrew, would it be at all possible for you to thread these patches under something like this incoming message? The selfish reason I'm asking is so I can mark the thread as read instead of having to do it individually for 158 messages ... my thumb would thank you for this. Regards, James ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-12-01 1:47 incoming Andrew Morton 2019-12-01 5:17 ` incoming James Bottomley @ 2019-12-01 21:07 ` Linus Torvalds 2019-12-02 8:21 ` incoming Steven Price 1 sibling, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2019-12-01 21:07 UTC (permalink / raw) To: Andrew Morton, Steven Price; +Cc: mm-commits, Linux-MM On Sat, Nov 30, 2019 at 5:47 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > Steven Price <steven.price@arm.com>: > Patch series "Generic page walk and ptdump", v15: > mm: add generic p?d_leaf() macros > arc: mm: add p?d_leaf() definitions > arm: mm: add p?d_leaf() definitions > arm64: mm: add p?d_leaf() definitions > mips: mm: add p?d_leaf() definitions > powerpc: mm: add p?d_leaf() definitions > riscv: mm: add p?d_leaf() definitions > s390: mm: add p?d_leaf() definitions > sparc: mm: add p?d_leaf() definitions > x86: mm: add p?d_leaf() definitions > mm: pagewalk: add p4d_entry() and pgd_entry() > mm: pagewalk: allow walking without vma > mm: pagewalk: add test_p?d callbacks > mm: pagewalk: add 'depth' parameter to pte_hole > x86: mm: point to struct seq_file from struct pg_state > x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct > x86: mm: convert ptdump_walk_pgd_level_debugfs() to take an mm_struct > x86: mm: convert ptdump_walk_pgd_level_core() to take an mm_struct > mm: add generic ptdump > x86: mm: convert dump_pagetables to use walk_page_range > arm64: mm: convert mm/dump.c to use walk_page_range() > arm64: mm: display non-present entries in ptdump > mm: ptdump: reduce level numbers by 1 in note_page() I've dropped these, and since they clearly weren't ready I don't want to see them re-sent for 5.5. If somebody figures out the bug, trying again for 5.6 sounds fine. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-12-01 21:07 ` incoming Linus Torvalds @ 2019-12-02 8:21 ` Steven Price 0 siblings, 0 replies; 530+ messages in thread From: Steven Price @ 2019-12-02 8:21 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, mm-commits, Linux-MM On Sun, Dec 01, 2019 at 09:07:47PM +0000, Linus Torvalds wrote: > On Sat, Nov 30, 2019 at 5:47 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > Steven Price <steven.price@arm.com>: > > Patch series "Generic page walk and ptdump", v15: > > mm: add generic p?d_leaf() macros > > arc: mm: add p?d_leaf() definitions > > arm: mm: add p?d_leaf() definitions > > arm64: mm: add p?d_leaf() definitions > > mips: mm: add p?d_leaf() definitions > > powerpc: mm: add p?d_leaf() definitions > > riscv: mm: add p?d_leaf() definitions > > s390: mm: add p?d_leaf() definitions > > sparc: mm: add p?d_leaf() definitions > > x86: mm: add p?d_leaf() definitions > > mm: pagewalk: add p4d_entry() and pgd_entry() > > mm: pagewalk: allow walking without vma > > mm: pagewalk: add test_p?d callbacks > > mm: pagewalk: add 'depth' parameter to pte_hole > > x86: mm: point to struct seq_file from struct pg_state > > x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct > > x86: mm: convert ptdump_walk_pgd_level_debugfs() to take an mm_struct > > x86: mm: convert ptdump_walk_pgd_level_core() to take an mm_struct > > mm: add generic ptdump > > x86: mm: convert dump_pagetables to use walk_page_range > > arm64: mm: convert mm/dump.c to use walk_page_range() > > arm64: mm: display non-present entries in ptdump > > mm: ptdump: reduce level numbers by 1 in note_page() > > I've dropped these, and since they clearly weren't ready I don't want > to see them re-sent for 5.5. Sorry about this, I'll try to track down the cause of this and hopefully resubmit for 5.6. Thanks, Steve > If somebody figures out the bug, trying again for 5.6 sounds fine. > > Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-11-22 1:53 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-11-22 1:53 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 4 fixes, based on 81429eb8d9ca40b0c65bb739d29fa856c5d5e958: Vincent Whitchurch <vincent.whitchurch@axis.com>: mm/sparse: consistently do not zero memmap Joseph Qi <joseph.qi@linux.alibaba.com>: Revert "fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry()" David Hildenbrand <david@redhat.com>: mm/memory_hotplug: don't access uninitialized memmaps in shrink_zone_span() Andrey Ryabinin <aryabinin@virtuozzo.com>: mm/ksm.c: don't WARN if page is still mapped in remove_stable_node() fs/ocfs2/xattr.c | 56 ++++++++++++++++++++++++++++++---------------------- mm/ksm.c | 14 ++++++------- mm/memory_hotplug.c | 16 ++++++++++++-- mm/sparse.c | 2 - 4 files changed, 54 insertions(+), 34 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-11-16 1:34 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-11-16 1:34 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 11 fixes, based on 875fef493f21e54d20d71a581687990aaa50268c: Yang Shi <yang.shi@linux.alibaba.com>: mm: mempolicy: fix the wrong return value and potential pages leak of mbind zhong jiang <zhongjiang@huawei.com>: mm: fix trying to reclaim unevictable lru page when calling madvise_pageout Lasse Collin <lasse.collin@tukaani.org>: lib/xz: fix XZ_DYNALLOC to avoid useless memory reallocations Roman Gushchin <guro@fb.com>: mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm() mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup() Laura Abbott <labbott@redhat.com>: mm: slub: really fix slab walking for init_on_free Song Liu <songliubraving@fb.com>: mm,thp: recheck each page before collapsing file THP David Hildenbrand <david@redhat.com>: mm/memory_hotplug: fix try_offline_node() Vinayak Menon <vinmenon@codeaurora.org>: mm/page_io.c: do not free shared swap slots Ralph Campbell <rcampbell@nvidia.com>: mm/debug.c: __dump_page() prints an extra line mm/debug.c: PageAnon() is true for PageKsm() pages drivers/base/memory.c | 36 ++++++++++++++++++++++++++++++++++++ include/linux/memory.h | 1 + lib/xz/xz_dec_lzma2.c | 1 + mm/debug.c | 33 ++++++++++++++++++--------------- mm/hugetlb_cgroup.c | 2 +- mm/khugepaged.c | 28 ++++++++++++++++------------ mm/madvise.c | 16 ++++++++++++---- mm/memcontrol.c | 2 +- mm/memory_hotplug.c | 47 +++++++++++++++++++++++++++++------------------ mm/mempolicy.c | 14 +++++++++----- mm/page_io.c | 6 +++--- mm/slub.c | 39 +++++++++------------------------------ 12 files changed, 136 insertions(+), 89 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-11-06 5:16 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-11-06 5:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 17 fixes, based on 26bc672134241a080a83b2ab9aa8abede8d30e1c: Shakeel Butt <shakeelb@google.com>: mm: memcontrol: fix NULL-ptr deref in percpu stats flush John Hubbard <jhubbard@nvidia.com>: mm/gup_benchmark: fix MAP_HUGETLB case Mel Gorman <mgorman@techsingularity.net>: mm, meminit: recalculate pcpu batch and high limits after init completes Yang Shi <yang.shi@linux.alibaba.com>: mm: thp: handle page cache THP correctly in PageTransCompoundMap Shuning Zhang <sunny.s.zhang@oracle.com>: ocfs2: protect extent tree in ocfs2_prepare_inode_for_write() Jason Gunthorpe <jgg@mellanox.com>: mm/mmu_notifiers: use the right return code for WARN_ON Michal Hocko <mhocko@suse.com>: mm, vmstat: hide /proc/pagetypeinfo from normal users mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo Ville Syrjälä <ville.syrjala@linux.intel.com>: mm/khugepaged: fix might_sleep() warn with CONFIG_HIGHPTE=y Johannes Weiner <hannes@cmpxchg.org>: mm/page_alloc.c: ratelimit allocation failure warnings more aggressively Vitaly Wool <vitaly.wool@konsulko.com>: zswap: add Vitaly to the maintainers list Kevin Hao <haokexin@gmail.com>: dump_stack: avoid the livelock of the dump_lock Song Liu <songliubraving@fb.com>: MAINTAINERS: update information for "MEMORY MANAGEMENT" Roman Gushchin <guro@fb.com>: mm: slab: make page_cgroup_ino() to recognize non-compound slab pages properly Ilya Leoshkevich <iii@linux.ibm.com>: scripts/gdb: fix debugging modules compiled with hot/cold partitioning David Hildenbrand <david@redhat.com>: mm/memory_hotplug: fix updating the node span Johannes Weiner <hannes@cmpxchg.org>: mm: memcontrol: fix network errors from failing __GFP_ATOMIC charges MAINTAINERS | 5 + fs/ocfs2/file.c | 125 ++++++++++++++++++++++------- include/linux/mm.h | 5 - include/linux/mm_types.h | 5 + include/linux/page-flags.h | 20 ++++ lib/dump_stack.c | 7 + mm/khugepaged.c | 7 - mm/memcontrol.c | 23 +++-- mm/memory_hotplug.c | 8 + mm/mmu_notifier.c | 2 mm/page_alloc.c | 17 ++- mm/slab.h | 4 mm/vmstat.c | 25 ++++- scripts/gdb/linux/symbols.py | 3 tools/testing/selftests/vm/gup_benchmark.c | 2 15 files changed, 197 insertions(+), 61 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-10-19 3:19 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-10-19 3:19 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm Rather a lot of fixes, almost all affecting mm/. 26 patches, based on b9959c7a347d6adbb558fba7e36e9fef3cba3b07: David Hildenbrand <david@redhat.com>: drivers/base/memory.c: don't access uninitialized memmaps in soft_offline_page_store() fs/proc/page.c: don't access uninitialized memmaps in fs/proc/page.c mm/memory-failure.c: don't access uninitialized memmaps in memory_failure() Joel Colledge <joel.colledge@linbit.com>: scripts/gdb: fix lx-dmesg when CONFIG_PRINTK_CALLER is set Qian Cai <cai@lca.pw>: mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo David Hildenbrand <david@redhat.com>: mm/memory_hotplug: don't access uninitialized memmaps in shrink_pgdat_span() "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>: Patch series "mm/memory_hotplug: Shrink zones before removing memory", v6: mm/memunmap: don't access uninitialized memmap in memunmap_pages() Roman Gushchin <guro@fb.com>: mm: memcg/slab: fix panic in __free_slab() caused by premature memcg pointer release Chengguang Xu <cgxu519@mykernel.net>: ocfs2: fix error handling in ocfs2_setattr() John Hubbard <jhubbard@nvidia.com>: mm/gup_benchmark: add a missing "w" to getopt string mm/gup: fix a misnamed "write" argument, and a related bug Honglei Wang <honglei.wang@oracle.com>: mm: memcg: get number of pages on the LRU list in memcgroup base on lru_zone_size Mike Rapoport <rppt@linux.ibm.com>: mm: memblock: do not enforce current limit for memblock_phys* family David Hildenbrand <david@redhat.com>: hugetlbfs: don't access uninitialized memmaps in pfn_range_valid_gigantic() Yi Li <yilikernel@gmail.com>: ocfs2: fix panic due to ocfs2_wq is null Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm/memcontrol: update lruvec counters in mem_cgroup_move_account Chenwandun <chenwandun@huawei.com>: zram: fix race between backing_dev_show and backing_dev_store Ben Dooks <ben.dooks@codethink.co.uk>: mm: include <linux/huge_mm.h> for is_vma_temporary_stack mm/filemap.c: include <linux/ramfs.h> for generic_file_vm_ops definition "Ben Dooks (Codethink)" <ben.dooks@codethink.co.uk>: mm/init-mm.c: include <linux/mman.h> for vm_committed_as_batch "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: Patch series "Fixes for THP in page cache", v2: proc/meminfo: fix output alignment mm/thp: fix node page state in split_huge_page_to_list() William Kucharski <william.kucharski@oracle.com>: mm/vmscan.c: support removing arbitrary sized pages from mapping "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>: mm/thp: allow dropping THP from page cache Song Liu <songliubraving@fb.com>: kernel/events/uprobes.c: only do FOLL_SPLIT_PMD for uprobe register Ilya Leoshkevich <iii@linux.ibm.com>: scripts/gdb: fix debugging modules on s390 drivers/base/memory.c | 3 + drivers/block/zram/zram_drv.c | 5 + fs/ocfs2/file.c | 2 fs/ocfs2/journal.c | 3 - fs/ocfs2/localalloc.c | 3 - fs/proc/meminfo.c | 4 - fs/proc/page.c | 28 ++++++---- kernel/events/uprobes.c | 13 ++++- mm/filemap.c | 1 mm/gup.c | 14 +++-- mm/huge_memory.c | 9 ++- mm/hugetlb.c | 5 - mm/init-mm.c | 1 mm/memblock.c | 6 +- mm/memcontrol.c | 18 ++++--- mm/memory-failure.c | 14 +++-- mm/memory_hotplug.c | 74 ++++++----------------------- mm/memremap.c | 11 ++-- mm/page_owner.c | 5 + mm/rmap.c | 1 mm/slab_common.c | 9 +-- mm/truncate.c | 12 ++++ mm/vmscan.c | 14 ++--- scripts/gdb/linux/dmesg.py | 16 ++++-- scripts/gdb/linux/symbols.py | 8 ++- scripts/gdb/linux/utils.py | 25 +++++---- tools/testing/selftests/vm/gup_benchmark.c | 2 27 files changed, 166 insertions(+), 140 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-10-14 21:11 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-10-14 21:11 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm The usual shower of hotfixes and some followups to the recently merged page_owner enhancements. 16 patches, based on 2abd839aa7e615f2bbc50c8ba7deb9e40d186768. Subsystems affected by this patch series: Vlastimil Babka <vbabka@suse.cz>: Patch series "followups to debug_pagealloc improvements through page_owner", v3: mm, page_owner: fix off-by-one error in __set_page_owner_handle() mm, page_owner: decouple freeing stack trace from debug_pagealloc mm, page_owner: rename flag indicating that page is allocated Qian Cai <cai@lca.pw>: mm/slub: fix a deadlock in show_slab_objects() Eric Biggers <ebiggers@google.com>: lib/generic-radix-tree.c: add kmemleak annotations Alexander Potapenko <glider@google.com>: mm/slub.c: init_on_free=1 should wipe freelist ptr for bulk allocations lib/test_meminit: add a kmem_cache_alloc_bulk() test David Rientjes <rientjes@google.com>: mm, hugetlb: allow hugepage allocations to reclaim as needed Vlastimil Babka <vbabka@suse.cz>: mm, compaction: fix wrong pfn handling in __reset_isolation_pfn() Randy Dunlap <rdunlap@infradead.org>: fs/direct-io.c: fix kernel-doc warning fs/libfs.c: fix kernel-doc warning fs/fs-writeback.c: fix kernel-doc warning bitmap.h: fix kernel-doc warning and typo xarray.h: fix kernel-doc warning mm/slab.c: fix kernel-doc warning for __ksize() Jane Chu <jane.chu@oracle.com>: mm/memory-failure: poison read receives SIGKILL instead of SIGBUS if mmaped more than once Documentation/dev-tools/kasan.rst | 3 ++ fs/direct-io.c | 3 -- fs/fs-writeback.c | 2 - fs/libfs.c | 3 -- include/linux/bitmap.h | 3 +- include/linux/page_ext.h | 10 ++++++ include/linux/xarray.h | 4 +- lib/generic-radix-tree.c | 32 +++++++++++++++++----- lib/test_meminit.c | 27 ++++++++++++++++++ mm/compaction.c | 7 ++-- mm/memory-failure.c | 22 ++++++++------- mm/page_alloc.c | 6 ++-- mm/page_ext.c | 23 ++++++--------- mm/page_owner.c | 55 +++++++++++++------------------------- mm/slab.c | 3 ++ mm/slub.c | 35 ++++++++++++++++++------ 16 files changed, 152 insertions(+), 86 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-10-07 0:57 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-10-07 0:57 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm The usual shower of hotfixes. Chris's memcg patches aren't actually fixes - they're mature but a few niggling review issues were late to arrive. The ocfs2 fixes are quite old - those took some time to get reviewer attention. 18 patches, based on 4ea655343ce4180fe9b2c7ec8cb8ef9884a47901. Subsystems affected by this patch series: ocfs2 hotfixes mm/memcg mm/slab-generic Subsystem: ocfs2 Jia Guo <guojia12@huawei.com>: ocfs2: clear zero in unaligned direct IO Jia-Ju Bai <baijiaju1990@gmail.com>: fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry() fs: ocfs2: fix a possible null-pointer dereference in ocfs2_write_end_nolock() fs: ocfs2: fix a possible null-pointer dereference in ocfs2_info_scan_inode_alloc() Subsystem: hotfixes Will Deacon <will@kernel.org>: panic: ensure preemption is disabled during panic() Anshuman Khandual <anshuman.khandual@arm.com>: mm/memremap: drop unused SECTION_SIZE and SECTION_MASK Tejun Heo <tj@kernel.org>: writeback: fix use-after-free in finish_writeback_work() Yi Wang <wang.yi59@zte.com.cn>: mm: fix -Wmissing-prototypes warnings Baoquan He <bhe@redhat.com>: memcg: only record foreign writebacks with dirty pages when memcg is not disabled Michal Hocko <mhocko@suse.com>: kernel/sysctl.c: do not override max_threads provided by userspace Vitaly Wool <vitalywool@gmail.com>: mm/z3fold.c: claim page in the beginning of free Qian Cai <cai@lca.pw>: mm/page_alloc.c: fix a crash in free_pages_prepare() Dan Carpenter <dan.carpenter@oracle.com>: mm/vmpressure.c: fix a signedness bug in vmpressure_register_event() Subsystem: mm/memcg Chris Down <chris@chrisdown.name>: mm, memcg: proportional memory.{low,min} reclaim mm, memcg: make memory.emin the baseline for utilisation determination mm, memcg: make scan aggression always exclude protection Subsystem: mm/slab-generic Vlastimil Babka <vbabka@suse.cz>: Patch series "guarantee natural alignment for kmalloc()", v2: mm, sl[ou]b: improve memory accounting mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two) Documentation/admin-guide/cgroup-v2.rst | 20 +- Documentation/core-api/memory-allocation.rst | 4 fs/fs-writeback.c | 9 - fs/ocfs2/aops.c | 25 +++ fs/ocfs2/ioctl.c | 2 fs/ocfs2/xattr.c | 56 +++---- include/linux/memcontrol.h | 67 ++++++--- include/linux/slab.h | 4 kernel/fork.c | 4 kernel/panic.c | 1 mm/memcontrol.c | 5 mm/memremap.c | 2 mm/page_alloc.c | 8 - mm/shuffle.c | 2 mm/slab_common.c | 19 ++ mm/slob.c | 62 ++++++-- mm/slub.c | 14 + mm/sparse.c | 2 mm/vmpressure.c | 20 +- mm/vmscan.c | 198 +++++++++++++++++---------- mm/z3fold.c | 10 + 21 files changed, 363 insertions(+), 171 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-09-25 23:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-09-25 23:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - almost all of the rest of -mm - various other subsystems 76 patches, based on 351c8a09b00b5c51c8f58b016fffe51f87e2d820: Subsystems affected by this patch series: memcg misc core-kernel lib checkpatch reiserfs fat fork cpumask kexec uaccess kconfig kgdb bug ipc lzo kasan madvise cleanups pagemap Subsystem: memcg Michal Hocko <mhocko@suse.com>: memcg, kmem: do not fail __GFP_NOFAIL charges Subsystem: misc Masahiro Yamada <yamada.masahiro@socionext.com>: linux/coff.h: add include guard Subsystem: core-kernel Valdis Kletnieks <valdis.kletnieks@vt.edu>: kernel/elfcore.c: include proper prototypes Subsystem: lib Michel Lespinasse <walken@google.com>: rbtree: avoid generating code twice for the cached versions (tools copy) Patch series "make RB_DECLARE_CALLBACKS more generic", v3: augmented rbtree: add comments for RB_DECLARE_CALLBACKS macro augmented rbtree: add new RB_DECLARE_CALLBACKS_MAX macro augmented rbtree: rework the RB_DECLARE_CALLBACKS macro definition Joe Perches <joe@perches.com>: kernel-doc: core-api: include string.h into core-api Qian Cai <cai@lca.pw>: include/trace/events/writeback.h: fix -Wstringop-truncation warnings Kees Cook <keescook@chromium.org>: strscpy: reject buffer sizes larger than INT_MAX Valdis Kletnieks <valdis.kletnieks@vt.edu>: lib/generic-radix-tree.c: make 2 functions static inline lib/extable.c: add missing prototypes Stephen Boyd <swboyd@chromium.org>: lib/hexdump: make print_hex_dump_bytes() a nop on !DEBUG builds Subsystem: checkpatch Joe Perches <joe@perches.com>: checkpatch: don't interpret stack dumps as commit IDs checkpatch: improve SPDX license checking Matteo Croce <mcroce@redhat.com>: checkpatch.pl: warn on invalid commit id Brendan Jackman <brendan.jackman@bluwireless.co.uk>: checkpatch: exclude sizeof sub-expressions from MACRO_ARG_REUSE Joe Perches <joe@perches.com>: checkpatch: prefer __section over __attribute__((section(...))) checkpatch: allow consecutive close braces Sean Christopherson <sean.j.christopherson@intel.com>: checkpatch: remove obsolete period from "ambiguous SHA1" query Joe Perches <joe@perches.com>: checkpatch: make git output use LANGUAGE=en_US.utf8 Subsystem: reiserfs Jia-Ju Bai <baijiaju1990@gmail.com>: fs: reiserfs: remove unnecessary check of bh in remove_from_transaction() zhengbin <zhengbin13@huawei.com>: fs/reiserfs/journal.c: remove set but not used variables fs/reiserfs/stree.c: remove set but not used variables fs/reiserfs/lbalance.c: remove set but not used variables fs/reiserfs/objectid.c: remove set but not used variables fs/reiserfs/prints.c: remove set but not used variables fs/reiserfs/fix_node.c: remove set but not used variables fs/reiserfs/do_balan.c: remove set but not used variables Jason Yan <yanaijie@huawei.com>: fs/reiserfs/journal.c: remove set but not used variable fs/reiserfs/do_balan.c: remove set but not used variable Subsystem: fat Markus Elfring <elfring@users.sourceforge.net>: fat: delete an unnecessary check before brelse() Subsystem: fork Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>: fork: improve error message for corrupted page tables Subsystem: cpumask Alexey Dobriyan <adobriyan@gmail.com>: cpumask: nicer for_each_cpumask_and() signature Subsystem: kexec Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>: kexec: bail out upon SIGKILL when allocating memory. Vasily Gorbik <gor@linux.ibm.com>: kexec: restore arch_kexec_kernel_image_probe declaration Subsystem: uaccess Kees Cook <keescook@chromium.org>: uaccess: add missing __must_check attributes Subsystem: kconfig Masahiro Yamada <yamada.masahiro@socionext.com>: compiler: enable CONFIG_OPTIMIZE_INLINING forcibly Subsystem: kgdb Douglas Anderson <dianders@chromium.org>: kgdb: don't use a notifier to enter kgdb at panic; call directly scripts/gdb: handle split debug Subsystem: bug Kees Cook <keescook@chromium.org>: Patch series "Clean up WARN() "cut here" handling", v2: bug: refactor away warn_slowpath_fmt_taint() bug: rename __WARN_printf_taint() to __WARN_printf() bug: consolidate warn_slowpath_fmt() usage bug: lift "cut here" out of __warn() bug: clean up helper macros to remove __WARN_TAINT() bug: consolidate __WARN_FLAGS usage bug: move WARN_ON() "cut here" into exception handler Subsystem: ipc Markus Elfring <elfring@users.sourceforge.net>: ipc/mqueue.c: delete an unnecessary check before the macro call dev_kfree_skb() ipc/mqueue: improve exception handling in do_mq_notify() "Joel Fernandes (Google)" <joel@joelfernandes.org>: ipc/sem.c: convert to use built-in RCU list checking Subsystem: lzo Dave Rodgman <dave.rodgman@arm.com>: lib/lzo/lzo1x_compress.c: fix alignment bug in lzo-rle Subsystem: kasan Andrey Konovalov <andreyknvl@google.com>: Patch series "arm64: untag user pointers passed to the kernel", v19: lib: untag user pointers in strn*_user mm: untag user pointers passed to memory syscalls mm: untag user pointers in mm/gup.c mm: untag user pointers in get_vaddr_frames fs/namespace: untag user pointers in copy_mount_options userfaultfd: untag user pointers drm/amdgpu: untag user pointers drm/radeon: untag user pointers in radeon_gem_userptr_ioctl media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get tee/shm: untag user pointers in tee_shm_register vfio/type1: untag user pointers in vaddr_get_pfn Catalin Marinas <catalin.marinas@arm.com>: mm: untag user pointers in mmap/munmap/mremap/brk Subsystem: madvise Minchan Kim <minchan@kernel.org>: Patch series "Introduce MADV_COLD and MADV_PAGEOUT", v7: mm: introduce MADV_COLD mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REFRECLAIM mm: introduce MADV_PAGEOUT mm: factor out common parts between MADV_COLD and MADV_PAGEOUT Subsystem: cleanups Mike Rapoport <rppt@linux.ibm.com>: hexagon: drop empty and unused free_initrd_mem Denis Efremov <efremov@linux.com>: checkpatch: check for nested (un)?likely() calls xen/events: remove unlikely() from WARN() condition fs: remove unlikely() from WARN_ON() condition wimax/i2400m: remove unlikely() from WARN*() condition xfs: remove unlikely() from WARN_ON() condition IB/hfi1: remove unlikely() from IS_ERR*() condition ntfs: remove (un)?likely() from IS_ERR() conditions Subsystem: pagemap Mark Rutland <mark.rutland@arm.com>: mm: treewide: clarify pgtable_page_{ctor,dtor}() naming Documentation/core-api/kernel-api.rst | 3 Documentation/vm/split_page_table_lock.rst | 10 arch/alpha/include/uapi/asm/mman.h | 3 arch/arc/include/asm/pgalloc.h | 4 arch/arm/include/asm/tlb.h | 2 arch/arm/mm/mmu.c | 2 arch/arm64/include/asm/tlb.h | 2 arch/arm64/mm/mmu.c | 2 arch/csky/include/asm/pgalloc.h | 2 arch/hexagon/include/asm/pgalloc.h | 2 arch/hexagon/mm/init.c | 13 arch/m68k/include/asm/mcf_pgalloc.h | 6 arch/m68k/include/asm/motorola_pgalloc.h | 6 arch/m68k/include/asm/sun3_pgalloc.h | 2 arch/mips/include/asm/pgalloc.h | 2 arch/mips/include/uapi/asm/mman.h | 3 arch/nios2/include/asm/pgalloc.h | 2 arch/openrisc/include/asm/pgalloc.h | 6 arch/parisc/include/uapi/asm/mman.h | 3 arch/powerpc/mm/pgtable-frag.c | 6 arch/riscv/include/asm/pgalloc.h | 2 arch/s390/mm/pgalloc.c | 6 arch/sh/include/asm/pgalloc.h | 2 arch/sparc/include/asm/pgtable_64.h | 5 arch/sparc/mm/init_64.c | 4 arch/sparc/mm/srmmu.c | 4 arch/um/include/asm/pgalloc.h | 2 arch/unicore32/include/asm/tlb.h | 2 arch/x86/mm/pat_rbtree.c | 19 arch/x86/mm/pgtable.c | 2 arch/xtensa/include/asm/pgalloc.h | 4 arch/xtensa/include/uapi/asm/mman.h | 3 drivers/block/drbd/drbd_interval.c | 29 - drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 2 drivers/gpu/drm/radeon/radeon_gem.c | 2 drivers/infiniband/hw/hfi1/verbs.c | 2 drivers/media/v4l2-core/videobuf-dma-contig.c | 9 drivers/net/wimax/i2400m/tx.c | 3 drivers/tee/tee_shm.c | 1 drivers/vfio/vfio_iommu_type1.c | 2 drivers/xen/events/events_base.c | 2 fs/fat/dir.c | 4 fs/namespace.c | 2 fs/ntfs/mft.c | 12 fs/ntfs/namei.c | 2 fs/ntfs/runlist.c | 2 fs/ntfs/super.c | 2 fs/open.c | 2 fs/reiserfs/do_balan.c | 15 fs/reiserfs/fix_node.c | 6 fs/reiserfs/journal.c | 22 fs/reiserfs/lbalance.c | 3 fs/reiserfs/objectid.c | 3 fs/reiserfs/prints.c | 3 fs/reiserfs/stree.c | 4 fs/userfaultfd.c | 22 fs/xfs/xfs_buf.c | 4 include/asm-generic/bug.h | 71 +- include/asm-generic/pgalloc.h | 8 include/linux/cpumask.h | 14 include/linux/interval_tree_generic.h | 22 include/linux/kexec.h | 2 include/linux/kgdb.h | 2 include/linux/mm.h | 4 include/linux/mm_types_task.h | 4 include/linux/printk.h | 22 include/linux/rbtree_augmented.h | 114 +++- include/linux/string.h | 5 include/linux/swap.h | 2 include/linux/thread_info.h | 2 include/linux/uaccess.h | 21 include/trace/events/writeback.h | 38 - include/uapi/asm-generic/mman-common.h | 3 include/uapi/linux/coff.h | 5 ipc/mqueue.c | 22 ipc/sem.c | 3 kernel/debug/debug_core.c | 31 - kernel/elfcore.c | 1 kernel/fork.c | 16 kernel/kexec_core.c | 2 kernel/panic.c | 48 - lib/Kconfig.debug | 4 lib/bug.c | 11 lib/extable.c | 1 lib/generic-radix-tree.c | 4 lib/hexdump.c | 21 lib/lzo/lzo1x_compress.c | 14 lib/rbtree_test.c | 37 - lib/string.c | 12 lib/strncpy_from_user.c | 3 lib/strnlen_user.c | 3 mm/frame_vector.c | 2 mm/gup.c | 4 mm/internal.h | 2 mm/madvise.c | 562 ++++++++++++++++------- mm/memcontrol.c | 10 mm/mempolicy.c | 3 mm/migrate.c | 2 mm/mincore.c | 2 mm/mlock.c | 4 mm/mmap.c | 34 - mm/mprotect.c | 2 mm/mremap.c | 13 mm/msync.c | 2 mm/oom_kill.c | 2 mm/swap.c | 42 + mm/vmalloc.c | 5 mm/vmscan.c | 62 ++ scripts/checkpatch.pl | 69 ++ scripts/gdb/linux/symbols.py | 4 tools/include/linux/rbtree.h | 71 +- tools/include/linux/rbtree_augmented.h | 145 +++-- tools/lib/rbtree.c | 37 - 114 files changed, 1195 insertions(+), 754 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-09-23 22:31 Andrew Morton 2019-09-24 0:55 ` incoming Linus Torvalds 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2019-09-23 22:31 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm - a few hot fixes - ocfs2 updates - almost all of -mm, as below. 134 patches, based on 619e17cf75dd58905aa67ccd494a6ba5f19d6cc6: Subsystems affected by this patch series: hotfixes ocfs2 slab-generic slab slub kmemleak kasan cleanups debug pagecache memcg gup pagemap memory-hotplug sparsemem vmalloc initialization z3fold compaction mempolicy oom-kill hugetlb migration thp mmap madvise shmem zswap zsmalloc Subsystem: hotfixes OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>: fat: work around race with userspace's read via blockdev while mounting Vitaly Wool <vitalywool@gmail.com>: Revert "mm/z3fold.c: fix race between migration and destruction" Arnd Bergmann <arnd@arndb.de>: mm: add dummy can_do_mlock() helper Vitaly Wool <vitalywool@gmail.com>: z3fold: fix retry mechanism in page reclaim Greg Thelen <gthelen@google.com>: kbuild: clean compressed initramfs image Subsystem: ocfs2 Joseph Qi <joseph.qi@linux.alibaba.com>: ocfs2: use jbd2_inode dirty range scoping jbd2: remove jbd2_journal_inode_add_[write|wait] Greg Kroah-Hartman <gregkh@linuxfoundation.org>: ocfs2: further debugfs cleanups Guozhonghua <guozhonghua@h3c.com>: ocfs2: remove unused ocfs2_calc_tree_trunc_credits() ocfs2: remove unused ocfs2_orphan_scan_exit() declaration zhengbin <zhengbin13@huawei.com>: fs/ocfs2/namei.c: remove set but not used variables fs/ocfs2/file.c: remove set but not used variables fs/ocfs2/dir.c: remove set but not used variables Markus Elfring <elfring@users.sourceforge.net>: ocfs2: delete unnecessary checks before brelse() Changwei Ge <gechangwei@live.cn>: ocfs2: wait for recovering done after direct unlock request ocfs2: checkpoint appending truncate log transaction before flushing Colin Ian King <colin.king@canonical.com>: ocfs2: fix spelling mistake "ambigous" -> "ambiguous" Subsystem: slab-generic Waiman Long <longman@redhat.com>: mm, slab: extend slab/shrink to shrink all memcg caches Subsystem: slab Waiman Long <longman@redhat.com>: mm, slab: move memcg_cache_params structure to mm/slab.h Subsystem: slub Qian Cai <cai@lca.pw>: mm/slub.c: fix -Wunused-function compiler warnings Subsystem: kmemleak Nicolas Boichat <drinkcat@chromium.org>: kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K Catalin Marinas <catalin.marinas@arm.com>: Patch series "mm: kmemleak: Use a memory pool for kmemleak object: mm: kmemleak: make the tool tolerant to struct scan_area allocation failures mm: kmemleak: simple memory allocation pool for kmemleak objects mm: kmemleak: use the memory pool for early allocations Qian Cai <cai@lca.pw>: mm/kmemleak.c: record the current memory pool size mm/kmemleak: increase the max mem pool to 1M Subsystem: kasan Walter Wu <walter-zh.wu@mediatek.com>: kasan: add memory corruption identification for software tag-based mode Mark Rutland <mark.rutland@arm.com>: lib/test_kasan.c: add roundtrip tests Subsystem: cleanups Christophe JAILLET <christophe.jaillet@wanadoo.fr>: mm/page_poison.c: fix a typo in a comment YueHaibing <yuehaibing@huawei.com>: mm/rmap.c: remove set but not used variable 'cstart' Matthew Wilcox (Oracle) <willy@infradead.org>: Patch series "Make working with compound pages easier", v2: mm: introduce page_size() "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: introduce page_shift() Matthew Wilcox (Oracle) <willy@infradead.org>: mm: introduce compound_nr() Yu Zhao <yuzhao@google.com>: mm: replace list_move_tail() with add_page_to_lru_list_tail() Subsystem: debug Vlastimil Babka <vbabka@suse.cz>: Patch series "debug_pagealloc improvements through page_owner", v2: mm, page_owner: record page owner for each subpage mm, page_owner: keep owner info when freeing the page mm, page_owner, debug_pagealloc: save and dump freeing stack trace Subsystem: pagecache Konstantin Khlebnikov <khlebnikov@yandex-team.ru>: mm/filemap.c: don't initiate writeback if mapping has no dirty pages mm/filemap.c: rewrite mapping_needs_writeback in less fancy manner "Matthew Wilcox (Oracle)" <willy@infradead.org>: mm: page cache: store only head pages in i_pages Subsystem: memcg Chris Down <chris@chrisdown.name>: mm, memcg: throttle allocators when failing reclaim over memory.high Roman Gushchin <guro@fb.com>: mm: memcontrol: switch to rcu protection in drain_all_stock() Johannes Weiner <hannes@cmpxchg.org>: mm: vmscan: do not share cgroup iteration between reclaimers Subsystem: gup [11~From: John Hubbard <jhubbard@nvidia.com>: Patch series "mm/gup: add make_dirty arg to put_user_pages_dirty_lock()",: mm/gup: add make_dirty arg to put_user_pages_dirty_lock() John Hubbard <jhubbard@nvidia.com>: drivers/gpu/drm/via: convert put_page() to put_user_page*() net/xdp: convert put_page() to put_user_page*() Subsystem: pagemap Wei Yang <richardw.yang@linux.intel.com>: mm: remove redundant assignment of entry Minchan Kim <minchan@kernel.org>: mm: release the spinlock on zap_pte_range Nicholas Piggin <npiggin@gmail.com>: Patch series "mm: remove quicklist page table caches": mm: remove quicklist page table caches Mike Rapoport <rppt@linux.ibm.com>: ia64: switch to generic version of pte allocation sh: switch to generic version of pte allocation microblaze: switch to generic version of pte allocation mm: consolidate pgtable_cache_init() and pgd_cache_init() Kefeng Wang <wangkefeng.wang@huawei.com>: mm: do not hash address in print_bad_pte() Subsystem: memory-hotplug David Hildenbrand <david@redhat.com>: mm/memory_hotplug: remove move_pfn_range() drivers/base/node.c: simplify unregister_memory_block_under_nodes() drivers/base/memory.c: fixup documentation of removable/phys_index/block_size_bytes driver/base/memory.c: validate memory block size early drivers/base/memory.c: don't store end_section_nr in memory blocks Wei Yang <richardw.yang@linux.intel.com>: mm/memory_hotplug.c: prevent memory leak when reusing pgdat David Hildenbrand <david@redhat.com>: Patch series "mm/memory_hotplug: online_pages() cleanups", v2: mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range() mm/memory_hotplug: drop PageReserved() check in online_pages_range() mm/memory_hotplug: simplify online_pages_range() mm/memory_hotplug: make sure the pfn is aligned to the order when onlining mm/memory_hotplug: online_pages cannot be 0 in online_pages() Alastair D'Silva <alastair@d-silva.org>: Patch series "Add bounds check for Hotplugged memory", v3: mm/memory_hotplug.c: add a bounds check to check_hotplug_memory_range() mm/memremap.c: add a bounds check in devm_memremap_pages() Souptick Joarder <jrdr.linux@gmail.com>: mm/memory_hotplug.c: s/is/if Subsystem: sparsemem Lecopzer Chen <lecopzer.chen@mediatek.com>: mm/sparse.c: fix memory leak of sparsemap_buf in aligned memory mm/sparse.c: fix ALIGN() without power of 2 in sparse_buffer_alloc() Wei Yang <richardw.yang@linux.intel.com>: mm/sparse.c: use __nr_to_section(section_nr) to get mem_section Alastair D'Silva <alastair@d-silva.org>: mm/sparse.c: don't manually decrement num_poisoned_pages "Alastair D'Silva" <alastair@d-silva.org>: mm/sparse.c: remove NULL check in clear_hwpoisoned_pages() Subsystem: vmalloc "Uladzislau Rezki (Sony)" <urezki@gmail.com>: mm/vmalloc: do not keep unpurged areas in the busy tree Pengfei Li <lpf.vector@gmail.com>: mm/vmalloc: modify struct vmap_area to reduce its size Austin Kim <austindh.kim@gmail.com>: mm/vmalloc.c: move 'area->pages' after if statement Subsystem: initialization Mike Rapoport <rppt@linux.ibm.com>: mm: use CPU_BITS_NONE to initialize init_mm.cpu_bitmask Qian Cai <cai@lca.pw>: mm: silence -Woverride-init/initializer-overrides Subsystem: z3fold Vitaly Wool <vitalywool@gmail.com>: z3fold: fix memory leak in kmem cache Subsystem: compaction Yafang Shao <laoar.shao@gmail.com>: mm/compaction.c: clear total_{migrate,free}_scanned before scanning a new zone Pengfei Li <lpf.vector@gmail.com>: mm/compaction.c: remove unnecessary zone parameter in isolate_migratepages() Subsystem: mempolicy Kefeng Wang <wangkefeng.wang@huawei.com>: mm/mempolicy.c: remove unnecessary nodemask check in kernel_migrate_pages() Subsystem: oom-kill Joel Savitz <jsavitz@redhat.com>: mm/oom_kill.c: add task UID to info message on an oom kill Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>: memcg, oom: don't require __GFP_FS when invoking memcg OOM killer Edward Chron <echron@arista.com>: mm/oom: add oom_score_adj and pgtables to Killed process message Yi Wang <wang.yi59@zte.com.cn>: mm/oom_kill.c: fix oom_cpuset_eligible() comment Michal Hocko <mhocko@suse.com>: mm, oom: consider present pages for the node size Qian Cai <cai@lca.pw>: mm/memcontrol.c: fix a -Wunused-function warning Michal Hocko <mhocko@suse.com>: memcg, kmem: deprecate kmem.limit_in_bytes Subsystem: hugetlb Hillf Danton <hdanton@sina.com>: Patch series "address hugetlb page allocation stalls", v2: mm, reclaim: make should_continue_reclaim perform dryrun detection Vlastimil Babka <vbabka@suse.cz>: mm, reclaim: cleanup should_continue_reclaim() mm, compaction: raise compaction priority after it withdrawns Mike Kravetz <mike.kravetz@oracle.com>: hugetlbfs: don't retry when pool page allocations start to fail Subsystem: migration Pingfan Liu <kernelfans@gmail.com>: mm/migrate.c: clean up useless code in migrate_vma_collect_pmd() Subsystem: thp Kefeng Wang <wangkefeng.wang@huawei.com>: thp: update split_huge_page_pmd() comment Song Liu <songliubraving@fb.com>: Patch series "Enable THP for text section of non-shmem files", v10;: filemap: check compound_head(page)->mapping in filemap_fault() filemap: check compound_head(page)->mapping in pagecache_get_page() filemap: update offset check in filemap_fault() mm,thp: stats for file backed THP khugepaged: rename collapse_shmem() and khugepaged_scan_shmem() mm,thp: add read-only THP support for (non-shmem) FS mm,thp: avoid writes to file with THP in pagecache Yang Shi <yang.shi@linux.alibaba.com>: Patch series "Make deferred split shrinker memcg aware", v6: mm: thp: extract split_queue_* into a struct mm: move mem_cgroup_uncharge out of __page_cache_release() mm: shrinker: make shrinker not depend on memcg kmem mm: thp: make deferred split shrinker memcg aware Song Liu <songliubraving@fb.com>: Patch series "THP aware uprobe", v13: mm: move memcmp_pages() and pages_identical() uprobe: use original page when all uprobes are removed mm, thp: introduce FOLL_SPLIT_PMD uprobe: use FOLL_SPLIT_PMD instead of FOLL_SPLIT khugepaged: enable collapse pmd for pte-mapped THP uprobe: collapse THP pmd after removing all uprobes Subsystem: mmap Alexandre Ghiti <alex@ghiti.fr>: Patch series "Provide generic top-down mmap layout functions", v6: mm, fs: move randomize_stack_top from fs to mm arm64: make use of is_compat_task instead of hardcoding this test arm64: consider stack randomization for mmap base only when necessary arm64, mm: move generic mmap layout functions to mm arm64, mm: make randomization selected by generic topdown mmap layout arm: properly account for stack randomization and stack guard gap arm: use STACK_TOP when computing mmap base address arm: use generic mmap top-down layout and brk randomization mips: properly account for stack randomization and stack guard gap mips: use STACK_TOP when computing mmap base address mips: adjust brk randomization offset to fit generic version mips: replace arch specific way to determine 32bit task with generic version mips: use generic mmap top-down layout and brk randomization riscv: make mmap allocation top-down by default Wei Yang <richardw.yang@linux.intel.com>: mm/mmap.c: refine find_vma_prev() with rb_last() Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>: mm: mmap: increase sockets maximum memory size pgoff for 32bits Subsystem: madvise Mike Rapoport <rppt@linux.ibm.com>: mm/madvise: reduce code duplication in error handling paths Subsystem: shmem Miles Chen <miles.chen@mediatek.com>: shmem: fix obsolete comment in shmem_getpage_gfp() Subsystem: zswap Hui Zhu <teawaterz@linux.alibaba.com>: zpool: add malloc_support_movable to zpool_driver zswap: use movable memory if zpool support allocate movable memory Vitaly Wool <vitalywool@gmail.com>: zswap: do not map same object twice Subsystem: zsmalloc Qian Cai <cai@lca.pw>: mm/zsmalloc.c: fix a -Wunused-function warning Documentation/ABI/testing/sysfs-kernel-slab | 13 Documentation/admin-guide/cgroup-v1/memory.rst | 4 Documentation/admin-guide/kernel-parameters.txt | 2 arch/Kconfig | 11 arch/alpha/include/asm/pgalloc.h | 2 arch/alpha/include/asm/pgtable.h | 5 arch/arc/include/asm/pgalloc.h | 1 arch/arc/include/asm/pgtable.h | 5 arch/arm/Kconfig | 1 arch/arm/include/asm/pgalloc.h | 2 arch/arm/include/asm/pgtable-nommu.h | 5 arch/arm/include/asm/pgtable.h | 2 arch/arm/include/asm/processor.h | 2 arch/arm/kernel/process.c | 5 arch/arm/mm/flush.c | 7 arch/arm/mm/mmap.c | 80 ----- arch/arm64/Kconfig | 2 arch/arm64/include/asm/pgalloc.h | 2 arch/arm64/include/asm/pgtable.h | 2 arch/arm64/include/asm/processor.h | 2 arch/arm64/kernel/process.c | 8 arch/arm64/mm/flush.c | 3 arch/arm64/mm/mmap.c | 84 ----- arch/arm64/mm/pgd.c | 2 arch/c6x/include/asm/pgtable.h | 5 arch/csky/include/asm/pgalloc.h | 2 arch/csky/include/asm/pgtable.h | 5 arch/h8300/include/asm/pgtable.h | 6 arch/hexagon/include/asm/pgalloc.h | 2 arch/hexagon/include/asm/pgtable.h | 3 arch/hexagon/mm/Makefile | 2 arch/hexagon/mm/pgalloc.c | 10 arch/ia64/Kconfig | 4 arch/ia64/include/asm/pgalloc.h | 64 ---- arch/ia64/include/asm/pgtable.h | 5 arch/ia64/mm/init.c | 2 arch/m68k/include/asm/pgtable_mm.h | 7 arch/m68k/include/asm/pgtable_no.h | 7 arch/microblaze/include/asm/pgalloc.h | 128 -------- arch/microblaze/include/asm/pgtable.h | 7 arch/microblaze/mm/pgtable.c | 4 arch/mips/Kconfig | 2 arch/mips/include/asm/pgalloc.h | 2 arch/mips/include/asm/pgtable.h | 5 arch/mips/include/asm/processor.h | 5 arch/mips/mm/mmap.c | 124 +------- arch/nds32/include/asm/pgalloc.h | 2 arch/nds32/include/asm/pgtable.h | 2 arch/nios2/include/asm/pgalloc.h | 2 arch/nios2/include/asm/pgtable.h | 2 arch/openrisc/include/asm/pgalloc.h | 2 arch/openrisc/include/asm/pgtable.h | 5 arch/parisc/include/asm/pgalloc.h | 2 arch/parisc/include/asm/pgtable.h | 2 arch/powerpc/include/asm/pgalloc.h | 2 arch/powerpc/include/asm/pgtable.h | 1 arch/powerpc/mm/book3s64/hash_utils.c | 2 arch/powerpc/mm/book3s64/iommu_api.c | 7 arch/powerpc/mm/hugetlbpage.c | 2 arch/riscv/Kconfig | 12 arch/riscv/include/asm/pgalloc.h | 4 arch/riscv/include/asm/pgtable.h | 5 arch/s390/include/asm/pgtable.h | 6 arch/sh/include/asm/pgalloc.h | 56 --- arch/sh/include/asm/pgtable.h | 5 arch/sh/mm/Kconfig | 3 arch/sh/mm/nommu.c | 4 arch/sparc/include/asm/pgalloc_32.h | 2 arch/sparc/include/asm/pgalloc_64.h | 2 arch/sparc/include/asm/pgtable_32.h | 5 arch/sparc/include/asm/pgtable_64.h | 1 arch/sparc/mm/init_32.c | 1 arch/um/include/asm/pgalloc.h | 2 arch/um/include/asm/pgtable.h | 2 arch/unicore32/include/asm/pgalloc.h | 2 arch/unicore32/include/asm/pgtable.h | 2 arch/x86/include/asm/pgtable_32.h | 2 arch/x86/include/asm/pgtable_64.h | 3 arch/x86/mm/pgtable.c | 6 arch/xtensa/include/asm/pgtable.h | 1 arch/xtensa/include/asm/tlbflush.h | 3 drivers/base/memory.c | 44 +- drivers/base/node.c | 55 +-- drivers/crypto/chelsio/chtls/chtls_io.c | 5 drivers/gpu/drm/via/via_dmablit.c | 10 drivers/infiniband/core/umem.c | 5 drivers/infiniband/hw/hfi1/user_pages.c | 5 drivers/infiniband/hw/qib/qib_user_pages.c | 5 drivers/infiniband/hw/usnic/usnic_uiom.c | 5 drivers/infiniband/sw/siw/siw_mem.c | 10 drivers/staging/android/ion/ion_system_heap.c | 4 drivers/target/tcm_fc/tfc_io.c | 3 drivers/vfio/vfio_iommu_spapr_tce.c | 8 fs/binfmt_elf.c | 20 - fs/fat/dir.c | 13 fs/fat/fatent.c | 3 fs/inode.c | 3 fs/io_uring.c | 2 fs/jbd2/journal.c | 2 fs/jbd2/transaction.c | 12 fs/ocfs2/alloc.c | 20 + fs/ocfs2/aops.c | 13 fs/ocfs2/blockcheck.c | 26 - fs/ocfs2/cluster/heartbeat.c | 109 +------ fs/ocfs2/dir.c | 3 fs/ocfs2/dlm/dlmcommon.h | 1 fs/ocfs2/dlm/dlmdebug.c | 55 --- fs/ocfs2/dlm/dlmdebug.h | 16 - fs/ocfs2/dlm/dlmdomain.c | 7 fs/ocfs2/dlm/dlmunlock.c | 23 + fs/ocfs2/dlmglue.c | 29 - fs/ocfs2/extent_map.c | 3 fs/ocfs2/file.c | 13 fs/ocfs2/inode.c | 2 fs/ocfs2/journal.h | 42 -- fs/ocfs2/namei.c | 2 fs/ocfs2/ocfs2.h | 3 fs/ocfs2/super.c | 10 fs/open.c | 8 fs/proc/meminfo.c | 8 fs/proc/task_mmu.c | 6 include/asm-generic/pgalloc.h | 5 include/asm-generic/pgtable.h | 7 include/linux/compaction.h | 22 + include/linux/fs.h | 32 ++ include/linux/huge_mm.h | 9 include/linux/hugetlb.h | 2 include/linux/jbd2.h | 2 include/linux/khugepaged.h | 12 include/linux/memcontrol.h | 23 - include/linux/memory.h | 7 include/linux/memory_hotplug.h | 1 include/linux/mm.h | 37 ++ include/linux/mm_types.h | 1 include/linux/mmzone.h | 14 include/linux/page_ext.h | 1 include/linux/pagemap.h | 10 include/linux/quicklist.h | 94 ------ include/linux/shrinker.h | 7 include/linux/slab.h | 62 ---- include/linux/vmalloc.h | 20 - include/linux/zpool.h | 3 init/main.c | 6 kernel/events/uprobes.c | 81 ++++- kernel/resource.c | 4 kernel/sched/idle.c | 1 kernel/sysctl.c | 6 lib/Kconfig.debug | 15 lib/Kconfig.kasan | 8 lib/iov_iter.c | 2 lib/show_mem.c | 5 lib/test_kasan.c | 41 ++ mm/Kconfig | 16 - mm/Kconfig.debug | 4 mm/Makefile | 4 mm/compaction.c | 50 +-- mm/filemap.c | 168 ++++------ mm/gup.c | 125 +++----- mm/huge_memory.c | 129 ++++++-- mm/hugetlb.c | 89 +++++ mm/hugetlb_cgroup.c | 2 mm/init-mm.c | 2 mm/kasan/common.c | 32 +- mm/kasan/kasan.h | 14 mm/kasan/report.c | 44 ++ mm/kasan/tags_report.c | 24 + mm/khugepaged.c | 372 ++++++++++++++++++++---- mm/kmemleak.c | 338 +++++---------------- mm/ksm.c | 18 - mm/madvise.c | 52 +-- mm/memcontrol.c | 188 ++++++++++-- mm/memfd.c | 2 mm/memory.c | 21 + mm/memory_hotplug.c | 120 ++++--- mm/mempolicy.c | 4 mm/memremap.c | 5 mm/migrate.c | 13 mm/mmap.c | 12 mm/mmu_gather.c | 2 mm/nommu.c | 2 mm/oom_kill.c | 30 + mm/page_alloc.c | 27 + mm/page_owner.c | 127 +++++--- mm/page_poison.c | 2 mm/page_vma_mapped.c | 3 mm/quicklist.c | 103 ------ mm/rmap.c | 25 - mm/shmem.c | 12 mm/slab.h | 64 ++++ mm/slab_common.c | 37 ++ mm/slob.c | 2 mm/slub.c | 22 - mm/sparse.c | 25 + mm/swap.c | 16 - mm/swap_state.c | 6 mm/util.c | 126 +++++++- mm/vmalloc.c | 84 +++-- mm/vmscan.c | 163 ++++------ mm/vmstat.c | 2 mm/z3fold.c | 154 ++------- mm/zpool.c | 16 + mm/zsmalloc.c | 23 - mm/zswap.c | 15 net/xdp/xdp_umem.c | 9 net/xdp/xsk.c | 2 usr/Makefile | 3 206 files changed, 2385 insertions(+), 2533 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-23 22:31 incoming Andrew Morton @ 2019-09-24 0:55 ` Linus Torvalds 2019-09-24 4:31 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2019-09-24 0:55 UTC (permalink / raw) To: Andrew Morton, David Rientjes, Vlastimil Babka, Michal Hocko, Andrea Arcangeli Cc: mm-commits, Linux-MM On Mon, Sep 23, 2019 at 3:31 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - almost all of -mm, as below. I was hoping that we could at least test the THP locality thing? Is it in your queue at all, or am I supposed to just do it myself? Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-24 0:55 ` incoming Linus Torvalds @ 2019-09-24 4:31 ` Andrew Morton 2019-09-24 7:48 ` incoming Michal Hocko 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2019-09-24 4:31 UTC (permalink / raw) To: Linus Torvalds Cc: David Rientjes, Vlastimil Babka, Michal Hocko, Andrea Arcangeli, mm-commits, Linux-MM On Mon, 23 Sep 2019 17:55:24 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Mon, Sep 23, 2019 at 3:31 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > - almost all of -mm, as below. > > I was hoping that we could at least test the THP locality thing? Is it > in your queue at all, or am I supposed to just do it myself? > Confused. I saw a privately emailed patch from David which nobody seems to have tested yet. I parked that for consideration after -rc1. Or are you referring to something else? This thing keeps stalling. It would be nice to push this along and get something nailed down which we can at least get into 5.4-rc, perhaps with a backport-this tag? ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-24 4:31 ` incoming Andrew Morton @ 2019-09-24 7:48 ` Michal Hocko 2019-09-24 15:34 ` incoming Linus Torvalds 2019-09-24 19:55 ` incoming Vlastimil Babka 0 siblings, 2 replies; 530+ messages in thread From: Michal Hocko @ 2019-09-24 7:48 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, David Rientjes, Vlastimil Babka, Andrea Arcangeli, mm-commits, Linux-MM On Mon 23-09-19 21:31:53, Andrew Morton wrote: > On Mon, 23 Sep 2019 17:55:24 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > > > On Mon, Sep 23, 2019 at 3:31 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > > > - almost all of -mm, as below. > > > > I was hoping that we could at least test the THP locality thing? Is it > > in your queue at all, or am I supposed to just do it myself? > > > > Confused. I saw a privately emailed patch from David which nobody > seems to have tested yet. I parked that for consideration after -rc1. > Or are you referring to something else? > > This thing keeps stalling. It would be nice to push this along and get > something nailed down which we can at least get into 5.4-rc, perhaps > with a backport-this tag? The patch proposed by David is really non trivial wrt. potential side effects. I have provided my review feedback [1] and it didn't get any reaction. I really believe that we need to debug this properly. A reproducer would be useful for others to work on that. There is a more fundamental problem here and we need to address it rather than to duck tape it and whack a mole afterwards. [1] http://lkml.kernel.org/r/20190909193020.GD2063@dhcp22.suse.cz -- Michal Hocko SUSE Labs ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-24 7:48 ` incoming Michal Hocko @ 2019-09-24 15:34 ` Linus Torvalds 2019-09-25 6:36 ` incoming Michal Hocko 2019-09-24 19:55 ` incoming Vlastimil Babka 1 sibling, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2019-09-24 15:34 UTC (permalink / raw) To: Michal Hocko Cc: Andrew Morton, David Rientjes, Vlastimil Babka, Andrea Arcangeli, mm-commits, Linux-MM On Tue, Sep 24, 2019 at 12:48 AM Michal Hocko <mhocko@kernel.org> wrote: > > The patch proposed by David is really non trivial wrt. potential side > effects. The thing is, that's not an argument when we know that the current state is garbage and has a lot of these non-trivial side effects that are bad. So the patch by David _fixes_ a non-trivial bad side effect. You can't then say "there may be other non-trivial side effects that I don't even know about" as an argument for saying it's bad. David at least has numbers and an argument for his patch. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-24 15:34 ` incoming Linus Torvalds @ 2019-09-25 6:36 ` Michal Hocko 0 siblings, 0 replies; 530+ messages in thread From: Michal Hocko @ 2019-09-25 6:36 UTC (permalink / raw) To: Linus Torvalds Cc: Andrew Morton, David Rientjes, Vlastimil Babka, Andrea Arcangeli, mm-commits, Linux-MM On Tue 24-09-19 08:34:20, Linus Torvalds wrote: > On Tue, Sep 24, 2019 at 12:48 AM Michal Hocko <mhocko@kernel.org> wrote: > > > > The patch proposed by David is really non trivial wrt. potential side > > effects. > > The thing is, that's not an argument when we know that the current > state is garbage and has a lot of these non-trivial side effects that > are bad. > > So the patch by David _fixes_ a non-trivial bad side effect. > > You can't then say "there may be other non-trivial side effects that I > don't even know about" as an argument for saying it's bad. David at > least has numbers and an argument for his patch. All I am saying is that I am not able to wrap my head around this patch to provide a competent Ack. I also believe that the fix is targetting a wrong layer of the problem as explained in my review feedback. Appart from reclaim/compaction interaction mentioned by Vlastimil, it seems that it is an overly eager fallback to a remote node in the fast path that is causing a large part of the problem as well. Kcompactd is not eager enough to keep high order allocations ready for the fast path. This is not specific to THP we have many other high order allocations which are going to follow the same pattern, likely not visible in any counters but still having performance implications. Let's discuss technical details in the respective email thread -- Michal Hocko SUSE Labs ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-09-24 7:48 ` incoming Michal Hocko 2019-09-24 15:34 ` incoming Linus Torvalds @ 2019-09-24 19:55 ` Vlastimil Babka 1 sibling, 0 replies; 530+ messages in thread From: Vlastimil Babka @ 2019-09-24 19:55 UTC (permalink / raw) To: Michal Hocko, Andrew Morton Cc: Linus Torvalds, David Rientjes, Andrea Arcangeli, mm-commits, Linux-MM On 9/24/19 9:48 AM, Michal Hocko wrote: > On Mon 23-09-19 21:31:53, Andrew Morton wrote: >> On Mon, 23 Sep 2019 17:55:24 -0700 Linus Torvalds >> <torvalds@linux-foundation.org> wrote: >> >>> On Mon, Sep 23, 2019 at 3:31 PM Andrew Morton >>> <akpm@linux-foundation.org> wrote: >>>> >>>> - almost all of -mm, as below. >>> >>> I was hoping that we could at least test the THP locality thing? >>> Is it in your queue at all, or am I supposed to just do it >>> myself? >>> >> >> Confused. I saw a privately emailed patch from David which nobody >> seems to have tested yet. I parked that for consideration after >> -rc1. Or are you referring to something else? >> >> This thing keeps stalling. It would be nice to push this along and >> get something nailed down which we can at least get into 5.4-rc, >> perhaps with a backport-this tag? > > The patch proposed by David is really non trivial wrt. potential > side effects. I have provided my review feedback [1] and it didn't > get any reaction. I really believe that we need to debug this > properly. A reproducer would be useful for others to work on that. > > There is a more fundamental problem here and we need to address it > rather than to duck tape it and whack a mole afterwards. I believe we found a problem when investigating over-reclaim in this thread [1] where it seems madvised THP allocation attempt can result in 4MB reclaimed, if there is a small zone such as ZONE_DMA on the node. As it happens, the patch "[patch 090/134] mm, reclaim: make should_continue_reclaim perform dryrun detection" in Andrew's pile should change this 4MB to 32 pages reclaimed (as a side-effect), but that has to be tested. I'm also working on a patch to not reclaim even those few pages. Of course there might be more fundamental issues with reclaim/compaction interaction, but this one seems to become hopefully clear now. [1] https://lore.kernel.org/linux-mm/4b4ba042-3741-7b16-2292-198c569da2aa@profihost.ag/ > [1] http://lkml.kernel.org/r/20190909193020.GD2063@dhcp22.suse.cz > ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-08-30 23:04 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-08-30 23:04 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 7 fixes, based on 846d2db3e00048da3f650e0cfb0b8d67669cec3e: Roman Gushchin <guro@fb.com>: mm: memcontrol: flush percpu slab vmstats on kmem offlining Andrew Morton <akpm@linux-foundation.org>: mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n Roman Gushchin <guro@fb.com>: mm, memcg: partially revert "mm/memcontrol.c: keep local VM counters in sync with the hierarchical ones" "Gustavo A. R. Silva" <gustavo@embeddedor.com>: mm/z3fold.c: fix lock/unlock imbalance in z3fold_page_isolate Dmitry Safonov <dima@arista.com>: mailmap: add aliases for Dmitry Safonov Michal Hocko <mhocko@suse.com>: mm, memcg: do not set reclaim_state on soft limit reclaim Shakeel Butt <shakeelb@google.com>: mm: memcontrol: fix percpu vmstats and vmevents flush .mailmap | 3 ++ include/linux/mmzone.h | 5 ++-- mm/memcontrol.c | 53 ++++++++++++++++++++++++++++++++----------------- mm/vmscan.c | 5 ++-- mm/z3fold.c | 1 mm/zsmalloc.c | 2 + 6 files changed, 47 insertions(+), 22 deletions(-) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2019-08-25 0:54 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2019-08-25 0:54 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits, linux-mm 11 fixes, based on 361469211f876e67d7ca3d3d29e6d1c3e313d0f1: Henry Burns <henryburns@google.com>: mm/z3fold.c: fix race between migration and destruction David Rientjes <rientjes@google.com>: mm, page_alloc: move_freepages should not examine struct page of reserved memory Qian Cai <cai@lca.pw>: parisc: fix compilation errrors Roman Gushchin <guro@fb.com>: mm: memcontrol: flush percpu vmstats before releasing memcg mm: memcontrol: flush percpu vmevents before releasing memcg Jason Xing <kerneljasonxing@linux.alibaba.com>: psi: get poll_work to run when calling poll syscall next time Oleg Nesterov <oleg@redhat.com>: userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx Vlastimil Babka <vbabka@suse.cz>: mm, page_owner: handle THP splits correctly Henry Burns <henryburns@google.com>: mm/zsmalloc.c: migration can leave pages in ZS_EMPTY indefinitely mm/zsmalloc.c: fix race condition in zs_destroy_pool Andrey Ryabinin <aryabinin@virtuozzo.com>: mm/kasan: fix false positive invalid-free reports with CONFIG_KASAN_SW_TAGS=y ^ permalink raw reply [flat|nested] 530+ messages in thread
[parent not found: <20190718155613.546f9056bbb57f486ab64307@linux-foundation.org>]
* Re: incoming [not found] <20190718155613.546f9056bbb57f486ab64307@linux-foundation.org> @ 2019-07-19 10:42 ` Vlastimil Babka 0 siblings, 0 replies; 530+ messages in thread From: Vlastimil Babka @ 2019-07-19 10:42 UTC (permalink / raw) To: linux-kernel, Linus Torvalds, Andrew Morton On 7/19/19 12:56 AM, Andrew Morton wrote: > > The rest of MM and a kernel-wide procfs cleanup. > > > > Summary of the more significant patches: Thanks for that! Perhaps now it would be nice if this went also to linux-mm and lkml, as mm-commits is sort of hidden. Vlastimil ^ permalink raw reply [flat|nested] 530+ messages in thread
[parent not found: <20190716162536.bb52b8f34a8ecf5331a86a42@linux-foundation.org>]
* Re: incoming [not found] <20190716162536.bb52b8f34a8ecf5331a86a42@linux-foundation.org> @ 2019-07-17 8:47 ` Vlastimil Babka 2019-07-17 8:57 ` incoming Bhaskar Chowdhury 2019-07-17 16:13 ` incoming Linus Torvalds 0 siblings, 2 replies; 530+ messages in thread From: Vlastimil Babka @ 2019-07-17 8:47 UTC (permalink / raw) To: linux-kernel, Linus Torvalds Cc: linux-mm, Jonathan Corbet, Thorsten Leemhuis, LKML On 7/17/19 1:25 AM, Andrew Morton wrote: > > Most of the rest of MM and just about all of the rest of everything > else. Hi, as I've mentioned at LSF/MM [1], I think it would be nice if mm pull requests had summaries similar to other subsystems. I see they are now more structured (thanks!), but they are now probably hitting the limit of what scripting can do to produce a high-level summary for human readers (unless patch authors themselves provide a blurb that can be extracted later?). So I've tried now to provide an example what I had in mind, below. Maybe it's too concise - if there were "larger" features in this pull request, they would probably benefit from more details. I'm CCing the known (to me) consumers of these mails to judge :) Note I've only covered mm, and core stuff that I think will be interesting to wide audience (change in LIST_POISON2 value? I'm sure as hell glad to know about that one :) Feel free to include this in the merge commit, if you find it useful. Thanks, Vlastimil [1] https://lwn.net/Articles/787705/ ----- - z3fold fixes and enhancements by Henry Burns and Vitaly Wool - more accurate reclaimed slab caches calculations by Yafang Shao - fix MAP_UNINITIALIZED UAPI symbol to not depend on config, by Christoph Hellwig - !CONFIG_MMU fixes by Christoph Hellwig - new novmcoredd parameter to omit device dumps from vmcore, by Kairui Song - new test_meminit module for testing heap and pagealloc initialization, by Alexander Potapenko - ioremap improvements for huge mappings, by Anshuman Khandual - generalize kprobe page fault handling, by Anshuman Khandual - device-dax hotplug fixes and improvements, by Pavel Tatashin - enable synchronous DAX fault on powerpc, by Aneesh Kumar K.V - add pte_devmap() support for arm64, by Robin Murphy - unify locked_vm accounting with a helper, by Daniel Jordan - several misc fixes core/lib - new typeof_member() macro including some users, by Alexey Dobriyan - make BIT() and GENMASK() available in asm, by Masahiro Yamada - changed LIST_POISON2 on x86_64 to 0xdead000000000122 for better code generation, by Alexey Dobriyan - rbtree code size optimizations, by Michel Lespinasse - convert struct pid count to refcount_t, by Joel Fernandes get_maintainer.pl - add --no-moderated switch to skip moderated ML's, by Joe Perches ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-07-17 8:47 ` incoming Vlastimil Babka @ 2019-07-17 8:57 ` Bhaskar Chowdhury 2019-07-17 16:13 ` incoming Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: Bhaskar Chowdhury @ 2019-07-17 8:57 UTC (permalink / raw) To: Vlastimil Babka Cc: linux-kernel, Linus Torvalds, linux-mm, Jonathan Corbet, Thorsten Leemhuis [-- Attachment #1: Type: text/plain, Size: 2496 bytes --] Cool !! On 10:47 Wed 17 Jul , Vlastimil Babka wrote: >On 7/17/19 1:25 AM, Andrew Morton wrote: >> >> Most of the rest of MM and just about all of the rest of everything >> else. > >Hi, > >as I've mentioned at LSF/MM [1], I think it would be nice if mm pull >requests had summaries similar to other subsystems. I see they are now >more structured (thanks!), but they are now probably hitting the limit >of what scripting can do to produce a high-level summary for human >readers (unless patch authors themselves provide a blurb that can be >extracted later?). > >So I've tried now to provide an example what I had in mind, below. Maybe >it's too concise - if there were "larger" features in this pull request, >they would probably benefit from more details. I'm CCing the known (to >me) consumers of these mails to judge :) Note I've only covered mm, and >core stuff that I think will be interesting to wide audience (change in >LIST_POISON2 value? I'm sure as hell glad to know about that one :) > >Feel free to include this in the merge commit, if you find it useful. > >Thanks, >Vlastimil > >[1] https://lwn.net/Articles/787705/ > >----- > >- z3fold fixes and enhancements by Henry Burns and Vitaly Wool >- more accurate reclaimed slab caches calculations by Yafang Shao >- fix MAP_UNINITIALIZED UAPI symbol to not depend on config, by >Christoph Hellwig >- !CONFIG_MMU fixes by Christoph Hellwig >- new novmcoredd parameter to omit device dumps from vmcore, by Kairui Song >- new test_meminit module for testing heap and pagealloc initialization, >by Alexander Potapenko >- ioremap improvements for huge mappings, by Anshuman Khandual >- generalize kprobe page fault handling, by Anshuman Khandual >- device-dax hotplug fixes and improvements, by Pavel Tatashin >- enable synchronous DAX fault on powerpc, by Aneesh Kumar K.V >- add pte_devmap() support for arm64, by Robin Murphy >- unify locked_vm accounting with a helper, by Daniel Jordan >- several misc fixes > >core/lib >- new typeof_member() macro including some users, by Alexey Dobriyan >- make BIT() and GENMASK() available in asm, by Masahiro Yamada >- changed LIST_POISON2 on x86_64 to 0xdead000000000122 for better code >generation, by Alexey Dobriyan >- rbtree code size optimizations, by Michel Lespinasse >- convert struct pid count to refcount_t, by Joel Fernandes > >get_maintainer.pl >- add --no-moderated switch to skip moderated ML's, by Joe Perches > > [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 488 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-07-17 8:47 ` incoming Vlastimil Babka @ 2019-07-17 16:13 ` Linus Torvalds 2019-07-17 16:13 ` incoming Linus Torvalds 1 sibling, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2019-07-17 16:13 UTC (permalink / raw) To: Vlastimil Babka Cc: Linux List Kernel Mailing, linux-mm, Jonathan Corbet, Thorsten Leemhuis On Wed, Jul 17, 2019 at 1:47 AM Vlastimil Babka <vbabka@suse.cz> wrote: > > So I've tried now to provide an example what I had in mind, below. I'll take it as a trial. I added one-line notes about coda and the PTRACE_GET_SYSCALL_INFO interface too. I do hope that eventually I'll just get pull requests, and they'll have more of a "theme" than this all (*) Linus (*) Although in many ways, the theme for Andrew is "falls through the cracks otherwise" so I'm not really complaining. This has been working for years and years. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2019-07-17 16:13 ` Linus Torvalds 0 siblings, 0 replies; 530+ messages in thread From: Linus Torvalds @ 2019-07-17 16:13 UTC (permalink / raw) To: Vlastimil Babka Cc: Linux List Kernel Mailing, linux-mm, Jonathan Corbet, Thorsten Leemhuis On Wed, Jul 17, 2019 at 1:47 AM Vlastimil Babka <vbabka@suse.cz> wrote: > > So I've tried now to provide an example what I had in mind, below. I'll take it as a trial. I added one-line notes about coda and the PTRACE_GET_SYSCALL_INFO interface too. I do hope that eventually I'll just get pull requests, and they'll have more of a "theme" than this all (*) Linus (*) Although in many ways, the theme for Andrew is "falls through the cracks otherwise" so I'm not really complaining. This has been working for years and years. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-07-17 16:13 ` incoming Linus Torvalds (?) @ 2019-07-17 17:09 ` Christian Brauner -1 siblings, 0 replies; 530+ messages in thread From: Christian Brauner @ 2019-07-17 17:09 UTC (permalink / raw) To: Linus Torvalds Cc: Vlastimil Babka, Linux List Kernel Mailing, linux-mm, Jonathan Corbet, Thorsten Leemhuis On Wed, Jul 17, 2019 at 09:13:26AM -0700, Linus Torvalds wrote: > On Wed, Jul 17, 2019 at 1:47 AM Vlastimil Babka <vbabka@suse.cz> wrote: > > > > So I've tried now to provide an example what I had in mind, below. > > I'll take it as a trial. I added one-line notes about coda and the > PTRACE_GET_SYSCALL_INFO interface too. > > I do hope that eventually I'll just get pull requests, and they'll > have more of a "theme" than this all (*) > > Linus > > (*) Although in many ways, the theme for Andrew is "falls through the > cracks otherwise" so I'm not really complaining. This has been working I put all pid{fd}/clone{3} which is mostly related to pid.c, exit.c, fork.c into my tree and try to give it a consistent theme for the prs I sent. And that at least from my perspective that worked and was pretty easy to coordinate with Andrew. That should hopefully make it a little easier to theme the -mm tree overall going forward. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2019-07-17 16:13 ` incoming Linus Torvalds (?) (?) @ 2019-07-17 18:13 ` Vlastimil Babka -1 siblings, 0 replies; 530+ messages in thread From: Vlastimil Babka @ 2019-07-17 18:13 UTC (permalink / raw) To: Linus Torvalds Cc: Linux List Kernel Mailing, linux-mm, Jonathan Corbet, Thorsten Leemhuis On 7/17/19 6:13 PM, Linus Torvalds wrote: > On Wed, Jul 17, 2019 at 1:47 AM Vlastimil Babka <vbabka@suse.cz> wrote: >> >> So I've tried now to provide an example what I had in mind, below. > > I'll take it as a trial. I added one-line notes about coda and the > PTRACE_GET_SYSCALL_INFO interface too. Thanks. > I do hope that eventually I'll just get pull requests, Very much agree, that was also discussed at length in the LSF/MM mm process session I've linked. > and they'll > have more of a "theme" than this all (*) I'll check if the first patch bomb would be more amenable to that, as I plan to fill in the mm part for 5.3 on LinuxChanges wiki, but for a merge commit it's too late. > Linus > > (*) Although in many ways, the theme for Andrew is "falls through the > cracks otherwise" so I'm not really complaining. This has been working > for years and years. Nevermind the misc stuff that much, but I think mm itself is more important and deserves what other subsystems have. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2018-02-06 23:34 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2018-02-06 23:34 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - kasan updates - procfs - lib/bitmap updates - other lib/ updates - checkpatch tweaks - rapidio - ubsan - pipe fixes and cleanups - lots of other misc bits 114 patches, based on e237f98a9c134c3d600353f21e07db915516875b: Subject: kasan: don't emit builtin calls when sanitization is off Subject: kasan: add compiler support for clang Subject: kasan/Makefile: support LLVM style asan parameters Subject: kasan: support alloca() poisoning Subject: kasan: add tests for alloca poisoning Subject: kasan: add functions for unpoisoning stack variables Subject: kasan: detect invalid frees for large objects Subject: kasan: don't use __builtin_return_address(1) Subject: kasan: detect invalid frees for large mempool objects Subject: kasan: unify code between kasan_slab_free() and kasan_poison_kfree() Subject: kasan: detect invalid frees Subject: kasan: fix prototype author email address Subject: kasan: clean up KASAN_SHADOW_SCALE_SHIFT usage Subject: kasan: remove redundant initialization of variable 'real_size' Subject: proc: use %u for pid printing and slightly less stack Subject: proc: don't use READ_ONCE/WRITE_ONCE for /proc/*/fail-nth Subject: proc: fix /proc/*/map_files lookup Subject: fs/proc/vmcore.c: simpler /proc/vmcore cleanup Subject: proc: less memory for /proc/*/map_files readdir Subject: fs/proc/array.c: delete children_seq_release() Subject: fs/proc/kcore.c: use probe_kernel_read() instead of memcpy() Subject: fs/proc/internal.h: rearrange struct proc_dir_entry Subject: fs/proc/internal.h: fix up comment Subject: fs/proc: use __ro_after_init Subject: proc: spread likely/unlikely a bit Subject: proc: rearrange args Subject: fs/proc/consoles.c: use seq_putc() in show_console_dev() Subject: Makefile: move stack-protector compiler breakage test earlier Subject: Makefile: move stack-protector availability out of Kconfig Subject: Makefile: introduce CONFIG_CC_STACKPROTECTOR_AUTO Subject: uuid: cleanup <uapi/linux/uuid.h> Subject: tools/lib/subcmd/pager.c: do not alias select() params Subject: kernel/async.c: revert "async: simplify lowest_in_progress()" Subject: MAINTAINERS: update sboyd's email address Subject: bitmap: new bitmap_copy_safe and bitmap_{from,to}_arr32 Subject: bitmap: replace bitmap_{from,to}_u32array Subject: lib/test_bitmap.c: add bitmap_zero()/bitmap_clear() test cases Subject: lib/test_bitmap.c: add bitmap_fill()/bitmap_set() test cases Subject: lib/test_bitmap.c: clean up test_zero_fill_copy() test case and rename Subject: include/linux/bitmap.h: make bitmap_fill() and bitmap_zero() consistent Subject: lib/stackdepot.c: use a non-instrumented version of memcmp() Subject: lib/test_find_bit.c: rename to find_bit_benchmark.c Subject: lib/find_bit_benchmark.c: improvements Subject: lib: optimize cpumask_next_and() Subject: lib/: make RUNTIME_TESTS a menuconfig to ease disabling it all Subject: lib/test_sort.c: add module unload support Subject: checkpatch: allow long lines containing URL Subject: checkpatch: ignore some octal permissions of 0 Subject: checkpatch: improve quoted string and line continuation test Subject: checkpatch: add a few DEVICE_ATTR style tests Subject: checkpatch: improve the TABSTOP test to include declarations Subject: checkpatch: exclude drivers/staging from if with unnecessary parentheses test Subject: checkpatch: avoid some false positives for TABSTOP declaration test Subject: checkpatch: improve OPEN_BRACE test Subject: elf: fix NT_FILE integer overflow Subject: kallsyms: let print_ip_sym() print raw addresses Subject: nilfs2: use time64_t internally Subject: hfsplus: honor setgid flag on directories Subject: <asm-generic/siginfo.h>: fix language in comments Subject: kernel/fork.c: check error and return early Subject: kernel/fork.c: add comment about usage of CLONE_FS flags and namespaces Subject: cpumask: make cpumask_size() return "unsigned int" Subject: rapidio: delete an error message for a failed memory allocation in rio_init_mports() Subject: rapidio: adjust 12 checks for null pointers Subject: rapidio: adjust five function calls together with a variable assignment Subject: rapidio: improve a size determination in five functions Subject: rapidio: delete an unnecessary variable initialisation in three functions Subject: rapidio: return an error code only as a constant in two functions Subject: rapidio: move 12 EXPORT_SYMBOL_GPL() calls to function implementations Subject: drivers/rapidio/devices/tsi721_dma.c: delete an error message for a failed memory allocation in tsi721_alloc_chan_resources() Subject: drivers/rapidio/devices/tsi721_dma.c: delete an unnecessary variable initialisation in tsi721_alloc_chan_resources() Subject: drivers/rapidio/devices/tsi721_dma.c: adjust six checks for null pointers Subject: pids: introduce find_get_task_by_vpid() helper Subject: pps: parport: use timespec64 instead of timespec Subject: kernel/relay.c: revert "kernel/relay.c: fix potential memory leak" Subject: kcov: detect double association with a single task Subject: include/linux/genl_magic_func.h: remove own BUILD_BUG_ON*() defines Subject: build_bug.h: remove BUILD_BUG_ON_NULL() Subject: lib/ubsan.c: s/missaligned/misaligned/ Subject: lib/ubsan: add type mismatch handler for new GCC/Clang Subject: lib/ubsan: remove returns-nonnull-attribute checks Subject: ipc: fix ipc data structures inconsistency Subject: ipc/mqueue.c: have RT tasks queue in by priority in wq_add() Subject: arch/score/kernel/setup.c: combine two seq_printf() calls into one call in show_cpuinfo() Subject: vfs: remove might_sleep() from clear_inode() Subject: mm/userfaultfd.c: remove duplicate include Subject: mm: remove unneeded kallsyms include Subject: hrtimer: remove unneeded kallsyms include Subject: genirq: remove unneeded kallsyms include Subject: mm/memblock: memblock_is_map/region_memory can be boolean Subject: lib/lockref: __lockref_is_dead can be boolean Subject: kernel/cpuset: current_cpuset_is_being_rebound can be boolean Subject: kernel/resource: iomem_is_exclusive can be boolean Subject: kernel/module: module_is_live can be boolean Subject: kernel/mutex: mutex_is_locked can be boolean Subject: crash_dump: is_kdump_kernel can be boolean Subject: kasan: rework Kconfig settings Subject: pipe, sysctl: drop 'min' parameter from pipe-max-size converter Subject: pipe, sysctl: remove pipe_proc_fn() Subject: pipe: actually allow root to exceed the pipe buffer limits Subject: pipe: fix off-by-one error when checking buffer limits Subject: pipe: reject F_SETPIPE_SZ with size over UINT_MAX Subject: pipe: simplify round_pipe_size() Subject: pipe: read buffer limits atomically Subject: mm: docs: fixup punctuation Subject: mm: docs: fix parameter names mismatch Subject: mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors Subject: MAINTAINERS: remove ANDROID ION pattern Subject: MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern Subject: MAINTAINERS: update Cortina/Gemini patterns Subject: MAINTAINERS: update "ARM/OXNAS platform support" patterns Subject: MAINTAINERS: update various PALM patterns Subject: MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns Subject: Documentation/sysctl/user.txt: fix typo ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2018-02-01 0:13 Andrew Morton 2018-02-01 0:25 ` incoming Andrew Morton 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2018-02-01 0:13 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - misc fixes - ocfs2 updates - most of MM 119 patches, based on 7b1cd95d65eb3b1e13f8a90eb757e0ea232c7899: Subject: fs/dax.c: release PMD lock even when there is no PMD support in DAX Subject: tools: fix cross-compile var clobbering Subject: scripts/decodecode: make it take multiline Code line Subject: scripts/tags.sh: change find_other_sources() for include directories Subject: m32r: remove abort() Subject: fs/ocfs2/dlm/dlmmaster.c: clean up dead code Subject: ocfs2/cluster: neaten a member of o2net_msg_handler Subject: ocfs2: give an obvious tip for mismatched cluster names Subject: ocfs2/cluster: close a race that fence can't be triggered Subject: ocfs2: use the OCFS2_XATTR_ROOT_SIZE macro in ocfs2_reflink_xattr_header() Subject: ocfs2: clean dead code in suballoc.c Subject: ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid Subject: ocfs2: try a blocking lock before return AOP_TRUNCATED_PAGE Subject: ocfs2/xattr: assign errno to 'ret' in ocfs2_calc_xattr_init() Subject: ocfs2: clean up dead code in alloc.c Subject: ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute Subject: ocfs2: make metadata estimation accurate and clear Subject: ocfs2: try to reuse extent block in dealloc without meta_alloc Subject: ocfs2: add trimfs dlm lock resource Subject: ocfs2: add trimfs lock to avoid duplicated trims in cluster Subject: ocfs2: add ocfs2_try_rw_lock() and ocfs2_try_inode_lock() Subject: ocfs2: add ocfs2_overwrite_io() Subject: ocfs2: nowait aio support Subject: ocfs2: unlock bh_state if bg check fails Subject: ocfs2: return error when we attempt to access a dirty bh in jbd2 Subject: mm/slab_common.c: make calculate_alignment() static Subject: mm/slab.c: remove redundant assignments for slab_state Subject: mm/slub.c: fix wrong address during slab padding restoration Subject: slub: remove obsolete comments of put_cpu_partial() Subject: include/linux/sched/mm.h: uninline mmdrop_async(), etc Subject: mm: kmemleak: remove unused hardirq.h Subject: zswap: same-filled pages handling Subject: mm: relax deferred struct page requirements Subject: mm/mempolicy: remove redundant check in get_nodes Subject: mm/mempolicy: fix the check of nodemask from user Subject: mm/mempolicy: add nodes_empty check in SYSC_migrate_pages Subject: mm: drop hotplug lock from lru_add_drain_all() Subject: mm: show total hugetlb memory consumption in /proc/meminfo Subject: mm: use sc->priority for slab shrink targets Subject: mm: split deferred_init_range into initializing and freeing parts Subject: mm/filemap.c: remove include of hardirq.h Subject: mm: memcontrol: eliminate raw access to stat and event counters Subject: mm: memcontrol: implement lruvec stat functions on top of each other Subject: mm: memcontrol: fix excessive complexity in memory.stat reporting Subject: mm/page_owner.c: use PTR_ERR_OR_ZERO() Subject: mm/page_alloc.c: fix comment in __get_free_pages() Subject: mm: do not stall register_shrinker() Subject: selftests/vm: move 128TB mmap boundary test to generic directory Subject: mm/interval_tree.c: use vma_pages() helper Subject: mm: remove unused pgdat_reclaimable_pages() Subject: mm, hugetlb: remove hugepages_treat_as_movable sysctl Subject: mm/memory_hotplug.c: remove unnecesary check from register_page_bootmem_info_section() Subject: mm: update comment describing tlb_gather_mmu Subject: fs/proc/task_mmu.c: do not show VmExe bigger than total executable virtual memory Subject: mm: memory_hotplug: remove second __nr_to_section in register_page_bootmem_info_section() Subject: mm/huge_memory.c: fix comment in __split_huge_pmd_locked Subject: mm, userfaultfd, THP: avoid waiting when PMD under THP migration Subject: mm: add unmap_mapping_pages() Subject: mm: get 7% more pages in a pagevec Subject: asm-generic: provide generic_pmdp_establish() Subject: arc: use generic_pmdp_establish as pmdp_establish Subject: arm/mm: provide pmdp_establish() helper Subject: arm64: provide pmdp_establish() helper Subject: mips: use generic_pmdp_establish as pmdp_establish Subject: powerpc/mm: update pmdp_invalidate to return old pmd value Subject: s390/mm: modify pmdp_invalidate to return old value. Subject: sparc64: update pmdp_invalidate() to return old pmd value Subject: x86/mm: provide pmdp_establish() helper Subject: mm: do not lose dirty and accessed bits in pmdp_invalidate() Subject: mm: use updated pmdp_invalidate() interface to track dirty/accessed bits Subject: mm/thp: remove pmd_huge_split_prepare() Subject: mm: thp: use down_read_trylock() in khugepaged to avoid long block Subject: mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks Subject: mm, oom: avoid reaping only for mm's with blockable invalidate callbacks Subject: mm/zsmalloc: simplify shrinker init/destroy Subject: mm: align struct page more aesthetically Subject: mm: de-indent struct page Subject: mm: remove misleading alignment claims Subject: mm: improve comment on page->mapping Subject: mm: introduce _slub_counter_t Subject: mm: store compound_dtor / compound_order as bytes Subject: mm: document how to use struct page Subject: mm: remove reference to PG_buddy Subject: shmem: unexport shmem_add_seals()/shmem_get_seals() Subject: shmem: rename functions that are memfd-related Subject: hugetlb: expose hugetlbfs_inode_info in header Subject: hugetlb: implement memfd sealing Subject: shmem: add sealing support to hugetlb-backed memfd Subject: memfd-test: test hugetlbfs sealing Subject: memfd-test: add 'memfd-hugetlb:' prefix when testing hugetlbfs Subject: memfd-test: move common code to a shared unit Subject: memfd-test: run fuse test on hugetlb backend memory Subject: userfaultfd: convert to use anon_inode_getfd() Subject: mm: pin address_space before dereferencing it while isolating an LRU page Subject: mm/fadvise: discard partial page if endbyte is also EOF Subject: zswap: only save zswap header when necessary Subject: memcg: refactor mem_cgroup_resize_limit() Subject: mm/page_alloc.c: fix typos in comments Subject: mm/page_owner.c: clean up init_pages_in_zone() Subject: zsmalloc: use U suffix for negative literals being shifted Subject: mm/page_ext.c: make page_ext_init a noop when CONFIG_PAGE_EXTENSION but nothing uses it Subject: mm/compaction.c: fix comment for try_to_compact_pages() Subject: include/linux/mmzone.h: fix explanation of lower bits in the SPARSEMEM mem_map pointer Subject: mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd() Subject: mm/memcontrol.c: make local symbol static Subject: mm/memcontrol.c: try harder to decrease [memory,memsw].limit_in_bytes Subject: mm, hugetlb: unify core page allocation accounting and initialization Subject: mm, hugetlb: integrate giga hugetlb more naturally to the allocation path Subject: mm, hugetlb: do not rely on overcommit limit during migration Subject: mm, hugetlb: get rid of surplus page accounting tricks Subject: mm, hugetlb: further simplify hugetlb allocation API Subject: hugetlb, mempolicy: fix the mbind hugetlb migration Subject: hugetlb, mbind: fall back to default policy if vma is NULL Subject: mm: numa: do not trap faults on shared data section pages. Subject: mm: correct comments regarding do_fault_around() Subject: mm, memory_hotplug: fix memmap initialization Subject: mm/swap.c: make functions and their kernel-doc agree Subject: tools, vm: new option to specify kpageflags file Subject: mm: remove PG_highmem description ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2018-02-01 0:13 incoming Andrew Morton @ 2018-02-01 0:25 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2018-02-01 0:25 UTC (permalink / raw) To: Linus Torvalds, mm-commits And... [002/119] seems to have just disappeared. It was a standalone thing, I'll resend next time. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2018-01-19 0:33 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2018-01-19 0:33 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 6 fixes, based on dda3e15231b35840fe6f0973f803cc70ddb86281: Subject: mm/memory.c: release locked page in do_swap_page() Subject: mm/page_owner.c: remove drain_all_pages from init_early_allocated_pages Subject: scripts/decodecode: fix decoding for AArch64 (arm64) instructions Subject: scripts/gdb/linux/tasks.py: fix get_thread_info Subject: proc: fix coredump vs read /proc/*/stat race Subject: sparse doesn't support struct randomization ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2018-01-13 0:52 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2018-01-13 0:52 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 4 fixes, based on 1545dec46db3858bbce84c2065b579e2925706ab: Subject: MAINTAINERS, nilfs2: change project home URLs Subject: kmemleak: allow to coexist with fault injection Subject: kdump: write correct address of mem_section into vmcoreinfo Subject: tools/objtool/Makefile: don't assume sync-check.sh is executable ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2018-01-05 0:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2018-01-05 0:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 9 fixes, based on e1915c8195b38393005be9b74bfa6a3a367c83b3: Subject: mm: check pfn_valid first in zero_resv_unavail Subject: kernel/acct.c: fix the acct->needcheck check in check_free_space() Subject: mm/mprotect: add a cond_resched() inside change_pmd_range() Subject: kernel/exit.c: export abort() to modules Subject: mm/debug.c: provide useful debugging information for VM_BUG Subject: mm/zsmalloc.c: include fs.h Subject: mm/sparse.c: wrong allocation for mem_section Subject: userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails Subject: mailmap: update Mark Yao's email address ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-12-14 23:32 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-12-14 23:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 17 fixes, based on 7c5cac1bc7170bfc726a69eb64947c55658d16ad: Subject: include/linux/idr.h: add #include <linux/bug.h> Subject: lib/rbtree,drm/mm: add rbtree_replace_node_cached() Subject: mm/kmemleak.c: make cond_resched() rate-limiting more efficient Subject: string.h: workaround for increased stack usage Subject: autofs: fix careless error in recent commit Subject: exec: avoid gcc-8 warning for get_task_comm Subject: Documentation/vm/zswap.txt: update with same-value filled page feature Subject: scripts/faddr2line: fix CROSS_COMPILE unset error Subject: mm/memory.c: mark wp_huge_pmd() inline to prevent build failure Subject: mm/page_alloc.c: avoid excessive IRQ disabled times in free_unref_page_list() Subject: mm/slab.c: do not hash pointers when debugging slab Subject: kcov: fix comparison callback signature Subject: tools/slabinfo-gnuplot: force to use bash shell Subject: mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()' Subject: kernel: make groups_sort calling a responsibility group_info allocators Subject: mm, oom_reaper: fix memory corruption Subject: arch: define weak abort() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-11-30 0:09 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-11-30 0:09 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 28 fixes, based on 43570f0383d6d5879ae585e6c3cf027ba321546f: Subject: mm, memory_hotplug: do not back off draining pcp free pages from kworker context Subject: mm, oom_reaper: gather each vma to prevent leaking TLB entry Subject: mm/cma: fix alloc_contig_range ret code/potential leak Subject: mm: fix device-dax pud write-faults triggered by get_user_pages() Subject: mm: switch to 'define pmd_write' instead of __HAVE_ARCH_PMD_WRITE Subject: mm: replace pud_write with pud_access_permitted in fault + gup paths Subject: mm: replace pmd_write with pmd_access_permitted in fault + gup paths Subject: mm: replace pte_write with pte_access_permitted in fault + gup paths Subject: scripts/faddr2line: extend usage on generic arch Subject: mm, hugetlbfs: introduce ->split() to vm_operations_struct Subject: device-dax: implement ->split() to catch invalid munmap attempts Subject: mm: introduce get_user_pages_longterm Subject: mm: fail get_vaddr_frames() for filesystem-dax mappings Subject: v4l2: disable filesystem-dax mapping support Subject: IB/core: disable memory registration of filesystem-dax vmas Subject: exec: avoid RLIMIT_STACK races with prlimit() Subject: mm/madvise.c: fix madvise() infinite loop under special circumstances Subject: Revert "mm/page-writeback.c: print a warning if the vm dirtiness settings are illogical" Subject: fs/mbcache.c: make count_objects() more robust Subject: scripts/bloat-o-meter: don't fail with division by 0 Subject: kmemleak: add scheduling point to kmemleak_scan() Subject: mm: migrate: fix an incorrect call of prep_transhuge_page() Subject: mm, memcg: fix mem_cgroup_swapout() for THPs Subject: fs/fat/inode.c: fix sb_rdonly() change Subject: autofs: revert "autofs: take more care to not update last_used on path walk" Subject: autofs: revert "autofs: fix AT_NO_AUTOMOUNT not being honored" Subject: mm/hugetlb: fix NULL-pointer dereference on 5-level paging machine Subject: fs/hugetlbfs/inode.c: change put_page/unlock_page order in hugetlbfs_fallocate() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-11-17 23:25 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-11-17 23:25 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a bit more MM - procfs updates - dynamic-debug fixes - lib/ updates - checkpatch - epoll - nilfs2 - signals - rapidio - PID management cleanup and optimization - kcov updates - sysvipc updates - quite a few misc things all over the place 94 patches, based on a3841f94c7ecb3ede0f888d3fcfe8fb6368ddd7a: Subject: mm: fix nodemask printing Subject: mm/z3fold.c: use kref to prevent page free/compact race Subject: lib/dma-debug.c: fix incorrect pfn calculation Subject: mm: shmem: remove unused info variable Subject: mm, compaction: kcompactd should not ignore pageblock skip Subject: mm, compaction: persistently skip hugetlbfs pageblocks Subject: mm, compaction: extend pageblock_skip_persistent() to all compound pages Subject: mm, compaction: split off flag for not updating skip hints Subject: mm, compaction: remove unneeded pageblock_skip_persistent() checks Subject: proc, coredump: add CoreDumping flag to /proc/pid/status Subject: proc: : uninline name_to_int() Subject: proc: use do-while in name_to_int() Subject: spelling.txt: add "unnecessary" typo variants Subject: sh/boot: add static stack-protector to pre-kernel Subject: kernel debug: support resetting WARN*_ONCE Subject: kernel debug: support resetting WARN_ONCE for all architectures Subject: parse-maintainers: add ability to specify filenames Subject: iopoll: avoid -Wint-in-bool-context warning Subject: lkdtm: include WARN format string Subject: bug: define the "cut here" string in a single place Subject: bug: fix "cut here" location for __WARN_TAINT architectures Subject: include/linux/compiler-clang.h: handle randomizable anonymous structs Subject: kernel/umh.c: optimize 'proc_cap_handler()' Subject: dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 Subject: dynamic_debug documentation: minor fixes Subject: get_maintainer: add --self-test for internal consistency tests Subject: get_maintainer: add more --self-test options Subject: include/linux/bitfield.h: include <linux/build_bug.h> instead of <linux/bug.h> Subject: include/linux/radix-tree.h: remove unneeded #include <linux/bug.h> Subject: lib: add module support to string tests Subject: lib/test: delete five error messages for failed memory allocations Subject: lib/int_sqrt: optimize small argument Subject: lib/int_sqrt: optimize initial value compute Subject: lib/int_sqrt: adjust comments Subject: lib/genalloc.c: make the avail variable an atomic_long_t Subject: lib/nmi_backtrace.c: fix kernel text address leak Subject: tools/lib/traceevent/parse-filter.c: clean up clang build warning Subject: lib/rbtree-test: lower default params Subject: lib: test module for find_*_bit() functions Subject: checkpatch: support function pointers for unnamed function definition arguments Subject: scripts/checkpatch.pl: avoid false warning missing break Subject: checkpatch: printks always need a KERN_<LEVEL> Subject: checkpatch: allow DEFINE_PER_CPU definitions to exceed line length Subject: checkpatch: add TP_printk to list of logging functions Subject: checkpatch: add --strict test for lines ending in [ or ( Subject: checkpatch: do not check missing blank line before builtin_*_driver Subject: epoll: account epitem and eppoll_entry to kmemcg Subject: epoll: avoid calling ep_call_nested() from ep_poll_safewake() Subject: epoll: remove ep_call_nested() from ep_eventpoll_poll() Subject: init/version.c: include <linux/export.h> instead of <linux/module.h> Subject: autofs: don't fail mount for transient error Subject: pipe: match pipe_max_size data type with procfs Subject: pipe: avoid round_pipe_size() nr_pages overflow on 32-bit Subject: pipe: add proc_dopipe_max_size() to safely assign pipe_max_size Subject: sysctl: check for UINT_MAX before unsigned int min/max Subject: fs/nilfs2: convert timers to use timer_setup() Subject: nilfs2: fix race condition that causes file system corruption Subject: fs, nilfs: convert nilfs_root.count from atomic_t to refcount_t Subject: nilfs2: align block comments of nilfs_sufile_truncate_range() at * Subject: nilfs2: use octal for unreadable permission macro Subject: nilfs2: remove inode->i_version initialization Subject: hfs/hfsplus: clean up unused variables in bnode.c Subject: fat: remove redundant assignment of 0 to slots Subject: kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL Subject: kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals Subject: kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal() Subject: kdump: print a message in case parse_crashkernel_mem resulted in zero bytes Subject: rapidio: constify rio_device_id Subject: drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()' Subject: drivers/rapidio/devices/rio_mport_cdev.c: fix error handling in 'rio_dma_transfer()' Subject: Documentation/sysctl/vm.txt: fix typo Subject: kernel/sysctl.c: code cleanups Subject: pid: replace pid bitmap implementation with IDR API Subject: pid: remove pidhash Subject: kernel/panic.c: add TAINT_AUX Subject: kcov: remove pointless current != NULL check Subject: kcov: support comparison operands collection Subject: Makefile: support flag -fsanitizer-coverage=trace-cmp Subject: kcov: update documentation Subject: kernel/reboot.c: add devm_register_reboot_notifier() Subject: drivers/watchdog: make use of devm_register_reboot_notifier() Subject: initramfs: use time64_t timestamps Subject: sysvipc: unteach ids->next_id for !CHECKPOINT_RESTORE Subject: sysvipc: duplicate lock comments wrt ipc_addid() Subject: sysvipc: properly name ipc_addid() limit parameter Subject: sysvipc: make get_maxid O(1) again Subject: mm: add infrastructure for get_user_pages_fast() benchmarking Subject: drivers/pcmcia/sa1111_badge4.c: avoid unused function warning Subject: arch/ia64/include/asm/topology.h: remove unused parent_node() macro Subject: arch/sh/include/asm/topology.h: remove unused parent_node() macro Subject: arch/sparc/include/asm/topology_64.h: remove unused parent_node() macro Subject: arch/tile/include/asm/topology.h: remove unused parent_node() macro Subject: include/asm-generic/topology.h: remove unused parent_node() macro Subject: EXPERT Kconfig menu: fix broken EXPERT menu ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-11-16 1:29 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-11-16 1:29 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few misc bits - ocfs2 updates - almost all of MM 131 patches, based on c9b012e5f4a1d01dfa8abc6318211a67ba7d5db2: Subject: bloat-o-meter: provide 3 different arguments for data, function and All Subject: m32r: fix endianness constraints Subject: ocfs2: remove unused declaration ocfs2_publish_get_mount_state() Subject: ocfs2: no need flush workqueue before destroying it Subject: ocfs2: cleanup unused func declaration and assignment Subject: ocfs2: fix cluster hang after a node dies Subject: ocfs2: clean up some unused function declarations Subject: ocfs2: should wait dio before inode lock in ocfs2_setattr() Subject: ocfs2: ip_alloc_sem should be taken in ocfs2_get_block() Subject: ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent Subject: ocfs2/dlm: get mle inuse only when it is initialized Subject: ocfs2: remove unneeded goto in ocfs2_reserve_cluster_bitmap_bits() Subject: tools: slabinfo: add "-U" option to show unreclaimable slabs only Subject: mm: slabinfo: remove CONFIG_SLABINFO Subject: mm: oom: show unreclaimable slab info when unreclaimable slabs > user memory Subject: mm/slob.c: remove an unnecessary check for __GFP_ZERO Subject: mm/slab.c: only set __GFP_RECLAIMABLE once Subject: slab, slub, slob: add slab_flags_t Subject: slab, slub, slob: convert slab_flags_t to 32-bit Subject: slub: fix sysfs duplicate filename creation when slub_debug=O Subject: include/linux/slab.h: add kmalloc_array_node() and kcalloc_node() Subject: block/blk-mq.c: use kmalloc_array_node() Subject: drivers/infiniband/hw/qib/qib_init.c: use kmalloc_array_node() Subject: drivers/infiniband/sw/rdmavt/qp.c: use kmalloc_array_node() Subject: mm/mempool.c: use kmalloc_array_node() Subject: net/rds/ib_fmr.c: use kmalloc_array_node() Subject: mm: update comments for struct page.mapping Subject: zram: set BDI_CAP_STABLE_WRITES once Subject: bdi: introduce BDI_CAP_SYNCHRONOUS_IO Subject: mm, swap: introduce SWP_SYNCHRONOUS_IO Subject: mm, swap: skip swapcache for swapin of synchronous device Subject: mm: swap: SWP_SYNCHRONOUS_IO: skip swapcache only if swapped page has no other reference Subject: mm, swap: fix false error message in __swp_swapcount() Subject: mm/page-writeback.c: remove unused parameter from balance_dirty_pages() Subject: mm: drop migrate type checks from has_unmovable_pages Subject: mm: distinguish CMA and MOVABLE isolation in has_unmovable_pages() Subject: mm, page_alloc: fail has_unmovable_pages when seeing reserved pages Subject: mm, memory_hotplug: do not fail offlining too early Subject: mm, memory_hotplug: remove timeout from __offline_memory Subject: mm/memblock.c: make the index explicit argument of for_each_memblock_type Subject: mm/page-writeback.c: print a warning if the vm dirtiness settings are illogical Subject: zram: add zstd to the supported algorithms list Subject: zram: remove zlib from the list of recommended algorithms Subject: fs/hugetlbfs/inode.c: remove redundant -ENIVAL return from hugetlbfs_setattr() Subject: mm/hmm: constify hmm_devmem_page_get_drvdata() parameter Subject: zsmalloc: calling zs_map_object() from irq is a bug Subject: mm/mmu_notifier: avoid double notification when it is useless Subject: mm/mmu_notifier: avoid call to invalidate_range() in range_end() Subject: mm: remove unused pgdat->inactive_ratio Subject: mm/swap_slots.c: fix race conditions in swap_slots cache init Subject: mm, arch: remove empty_bad_page* Subject: mm/cma.c: change pr_info to pr_err for cma_alloc fail log Subject: mm/page_owner.c: reduce page_owner structure size Subject: mm: implement find_get_pages_range_tag() Subject: btrfs: use pagevec_lookup_range_tag() Subject: ceph: use pagevec_lookup_range_tag() Subject: ext4: use pagevec_lookup_range_tag() Subject: f2fs: use pagevec_lookup_range_tag() Subject: f2fs: simplify page iteration loops Subject: f2fs: use find_get_pages_tag() for looking up single page Subject: gfs2: use pagevec_lookup_range_tag() Subject: nilfs2: use pagevec_lookup_range_tag() Subject: mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range() Subject: mm: use pagevec_lookup_range_tag() in write_cache_pages() Subject: mm: add variant of pagevec_lookup_range_tag() taking number of pages Subject: ceph: use pagevec_lookup_range_nr_tag() Subject: mm: remove nr_pages argument from pagevec_lookup_{,range}_tag() Subject: afs: use find_get_pages_range_tag() Subject: cifs: use find_get_pages_range_tag() Subject: kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644 Subject: mm: account pud page tables Subject: mm: introduce wrappers to access mm->nr_ptes Subject: mm: consolidate page table accounting Subject: fs, mm: account filp cache to kmemcg Subject: mm/rmap.c: remove redundant variable cend Subject: kmemcheck: remove annotations Subject: kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK Subject: kmemcheck: remove whats left of NOTRACK flags Subject: kmemcheck: rip it out Subject: mm/swap_state.c: declare a few variables as __read_mostly Subject: mm: deferred_init_memmap improvements Subject: x86/mm: set fields in deferred pages Subject: sparc64/mm: set fields in deferred pages Subject: sparc64: simplify vmemmap_populate Subject: mm: define memblock_virt_alloc_try_nid_raw Subject: mm: zero reserved and unavailable struct pages Subject: x86/mm/kasan: don't use vmemmap_populate() to initialize shadow Subject: arm64/mm/kasan: don't use vmemmap_populate() to initialize shadow Subject: mm: stop zeroing memory during allocation in vmemmap Subject: sparc64: optimize struct page zeroing Subject: mm/page_alloc: make sure __rmqueue() etc are always inline Subject: userfaultfd: use mmgrab instead of open-coded increment of mm_count Subject: mm, soft_offline: improve hugepage soft offlining error log Subject: mm/page-writeback.c: convert timers to use timer_setup() Subject: drivers/block/zram/zram_drv.c: make zram_page_end_io() static Subject: mm: speed up cancel_dirty_page() for clean pages Subject: mm: refactor truncate_complete_page() Subject: mm: factor out page cache page freeing into a separate function Subject: mm: move accounting updates before page_cache_tree_delete() Subject: mm: move clearing of page->mapping to page_cache_tree_delete() Subject: mm: factor out checks and accounting from __delete_from_page_cache() Subject: mm: batch radix tree operations when truncating pages Subject: mm, page_alloc: enable/disable IRQs once when freeing a list of pages Subject: mm, truncate: do not check mapping for every page being truncated Subject: mm, truncate: remove all exceptional entries from pagevec under one lock Subject: mm: only drain per-cpu pagevecs once per pagevec usage Subject: mm, pagevec: remove cold parameter for pagevecs Subject: mm: remove cold parameter for release_pages Subject: mm: remove cold parameter from free_hot_cold_page* Subject: mm: remove __GFP_COLD Subject: mm, page_alloc: simplify list handling in rmqueue_bulk() Subject: mm, pagevec: rename pagevec drained field Subject: Unify migrate_pages and move_pages access checks Subject: shmem: convert shmem_init_inodecache() to void Subject: mm, sysctl: make NUMA stats configurable Subject: mm: mlock: remove lru_add_drain_all() Subject: mm, page_alloc: fix potential false positive in __zone_watermark_ok Subject: fs: fuse: account fuse_inode slab memory as reclaimable Subject: mm: don't warn about allocations which stall for too long Subject: mm/page_alloc.c: broken deferred calculation Subject: mm/shmem.c: mark expected switch fall-through Subject: mm/list_lru.c: mark expected switch fall-through Subject: mm/hmm: remove redundant variable align_end Subject: mm, sparse: do not swamp log with huge vmemmap allocation failures Subject: mm: do not rely on preempt_count in print_vma_addr Subject: writeback: remove unused function parameter Subject: mm/page_ext.c: check if page_ext is not prepared Subject: mm,oom_reaper: remove pointless kthread_run() error check Subject: mm: simplify nodemask printing Subject: mm: make alloc_node_mem_map a void call if we don't have CONFIG_FLAT_NODE_MEM_MAP Subject: memory hotplug: fix comments when adding section ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-11-09 21:38 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-11-09 21:38 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 2 fixes, based on 3fefc31843cfe2b5f072efe11ed9ccaf6a7a5092: Subject: sysctl: add register_sysctl() dummy helper Subject: MAINTAINERS: update TPM driver infrastructure changes ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-11-02 22:59 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-11-02 22:59 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 7 fixes, based on 5cb0512c02ecd7e6214e912e4c150f4219ac78e0: Subject: userfaultfd: hugetlbfs: prevent UFFDIO_COPY to fill beyond the end of i_size Subject: mm, /proc/pid/pagemap: fix soft dirty marking for PMD migration entry Subject: ocfs2: fstrim: Fix start offset of first cluster group during fstrim Subject: fs/hugetlbfs/inode.c: fix hwpoison reserve accounting Subject: initramfs: fix initramfs rebuilds w/ compression after disabling Subject: mm/huge_memory.c: deposit page table when copying a PMD migration entry Subject: mm, swap: fix race between swap count continuation operations ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-10-13 22:57 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-10-13 22:57 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 18 fixes, based on 997301a860fca1a05ab8e383a8039b65f8abeb1e: Subject: mm/migrate: fix indexing bug (off by one) and avoid out of bound access Subject: lib/Kconfig.debug: kernel hacking menu: runtime testing: keep tests together Subject: mm/madvise.c: add description for MADV_WIPEONFORK and MADV_KEEPONFORK Subject: include/linux/of.h: provide of_n_{addr,size}_cells wrappers for !CONFIG_OF Subject: mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter Subject: mm: remove unnecessary WARN_ONCE in page_vma_mapped_walk(). Subject: mm: only display online cpus of the numa node Subject: userfaultfd: selftest: exercise -EEXIST only in background transfer Subject: scripts/kallsyms.c: ignore symbol type 'n' Subject: mm/cma.c: take __GFP_NOWARN into account in cma_alloc() Subject: Revert "vmalloc: back off when the current task is killed" Subject: tty: fall back to N_NULL if switching to N_TTY fails during hangup Subject: linux/kernel.h: add/correct kernel-doc notation Subject: fs/mpage.c: fix mpage_writepage() for pages with buffers Subject: fs/binfmt_misc.c: node could be NULL when evicting inode Subject: kmemleak: clear stale pointers from task stacks Subject: mm: page_vma_mapped: ensure pmd is loaded with READ_ONCE outside of lock Subject: mm, swap: use page-cluster as max window of VMA based swap readahead ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-10-03 23:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-10-03 23:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits A lot of stuff, sorry about that. A week on a beach, then a bunch of time catching up then more time letting it bake in -next. Shan't do that again! 51 fixes, based on d81fa669e3de7eb8a631d7d95dac5fbcb2bf9d4e: Subject: alpha: fix build failures Subject: kernel/params.c: align add_sysfs_param documentation with code Subject: scripts/spelling.txt: add more spelling mistakes to spelling.txt Subject: include/linux/mm.h: fix typo in VM_MPX definition Subject: ksm: fix unlocked iteration over vmas in cmp_and_merge_page() Subject: mm, hugetlb, soft_offline: save compound page order before page migration Subject: sh: sh7722: remove nonexistent GPIO_PTQ7 to fix pinctrl registration Subject: sh: sh7757: remove nonexistent GPIO_PT[JLNQ]7_RESV to fix pinctrl registration Subject: sh: sh7264: remove nonexistent GPIO_PH[0-7] to fix pinctrl registration Subject: sh: sh7269: remove nonexistent GPIO_PH[0-7] to fix pinctrl registration Subject: z3fold: fix potential race in z3fold_reclaim_page Subject: mm, oom_reaper: skip mm structs with mmu notifiers Subject: mm, memcg: remove hotplug locking from try_charge Subject: mm/memcg: avoid page count check for zone device Subject: android: binder: drop lru lock in isolate callback Subject: mm,compaction: serialize waitqueue_active() checks (for real) Subject: z3fold: fix stale list handling Subject: mm: meminit: mark init_reserved_page as __meminit Subject: rapidio: remove global irq spinlocks from the subsystem Subject: mm: fix RODATA_TEST failure "rodata_test: test data was not read only" Subject: zram: fix null dereference of handle Subject: m32r: define CPU_BIG_ENDIAN Subject: mm: have filemap_check_and_advance_wb_err clear AS_EIO/AS_ENOSPC Subject: mm: avoid marking swap cached page as lazyfree Subject: mm: fix data corruption caused by lazyfree page Subject: mm/device-public-memory: fix edge case in _vm_normal_page() Subject: userfaultfd: non-cooperative: fix fork use after free Subject: exec: load_script: kill the onstack interp[BINPRM_BUF_SIZE] array Subject: exec: binfmt_misc: don't nullify Node->dentry in kill_node() Subject: exec: binfmt_misc: shift filp_close(interp_file) from kill_node() to bm_evict_inode() Subject: exec: binfmt_misc: remove the confusing e->interp_file != NULL checks Subject: exec: binfmt_misc: fix race between load_misc_binary() and kill_node() Subject: exec: binfmt_misc: kill the onstack iname[BINPRM_BUF_SIZE] array Subject: lib/lz4: make arrays static const, reduces object code size Subject: include/linux/bitfield.h: remove 32bit from FIELD_GET comment block Subject: kernel/sysctl.c: remove duplicate UINT_MAX check on do_proc_douintvec_conv() Subject: mm: memcontrol: use vmalloc fallback for large kmem memcg arrays Subject: lib/idr.c: fix comment for idr_replace() Subject: mm, memory_hotplug: add scheduling point to __add_pages Subject: mm, page_alloc: add scheduling point to memmap_init_zone Subject: memremap: add scheduling point to devm_memremap_pages Subject: kernel/kcmp.c: drop branch leftover typo Subject: mm/memory_hotplug: change pfn_to_section_nr/section_nr_to_pfn macro to inline function Subject: mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long Subject: kernel/params.c: fix the maximum length in param_get_string Subject: kernel/params.c: fix an overflow in param_attr_show Subject: kernel/params.c: improve STANDARD_PARAM_DEF readability Subject: lib/ratelimit.c: use deferred printk() version Subject: m32r: fix build failure Subject: checkpatch: fix ignoring cover-letter logic Subject: include/linux/fs.h: fix comment about struct address_space ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-09-13 23:28 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-09-13 23:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits A few leftovers. Now with fixed up locale stuff, fingers crossed. 9 patches, based on 46c1e79fee417f151547aa46fae04ab06cb666f4: Subject: idr: remove WARN_ON_ONCE() when trying to replace negative ID Subject: drivers/media/cec/cec-adap.c: fix build with gcc-4.4.4 Subject: procfs: remove unused variable Subject: lib/test_bitmap.c: use ULL suffix for 64-bit constants Subject: fscache: fix fscache_objlist_show format processing Subject: IB/mlx4: fix sprintf format warning Subject: mm: treewide: remove GFP_TEMPORARY allocation flag Subject: arm64: stacktrace: avoid listing stacktrace functions in stacktrace Subject: mm, page_owner: skip unnecessary stack_trace entries ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-09-08 23:10 Andrew Morton [not found] ` <CA+55aFwRXB5_kSuN7o+tqN6Eft6w5oZuLG3B8Rns=0ZZa2ihgA@mail.gmail.com> 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2017-09-08 23:10 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 126 patches, based on 015a9e66b9b8c1f28097ed09bf9350708e26249a: - most of the rest of MM - a small number of misc things - lib/ updates - checkpatch - autofs updates - ipc/ updates Subject: mm: mempolicy: add queue_pages_required() Subject: mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1 Subject: mm: thp: introduce separate TTU flag for thp freezing Subject: mm: thp: introduce CONFIG_ARCH_ENABLE_THP_MIGRATION Subject: mm: thp: enable thp migration in generic path Subject: mm: thp: check pmd migration entry in common path Subject: mm: soft-dirty: keep soft-dirty bits over thp migration Subject: mm: mempolicy: mbind and migrate_pages support thp migration Subject: mm: migrate: move_pages() supports thp migration Subject: mm: memory_hotplug: memory hotremove supports thp migration Subject: hmm: heterogeneous memory management documentation Subject: mm/hmm: heterogeneous memory management (HMM for short) Subject: mm/hmm/mirror: mirror process address space on device with HMM helpers Subject: mm/hmm/mirror: helper to snapshot CPU page table Subject: mm/hmm/mirror: device page fault handler Subject: mm/memory_hotplug: introduce add_pages Subject: mm/ZONE_DEVICE: new type of ZONE_DEVICE for unaddressable memory Subject: mm/ZONE_DEVICE: special case put_page() for device private pages Subject: mm/memcontrol: allow to uncharge page without using page->lru field Subject: mm/memcontrol: support MEMORY_DEVICE_PRIVATE Subject: mm/hmm/devmem: device memory hotplug using ZONE_DEVICE Subject: mm/hmm/devmem: dummy HMM device for ZONE_DEVICE memory Subject: mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY Subject: mm/migrate: new memory migration helper for use with device memory Subject: mm/migrate: migrate_vma() unmap page from vma while collecting pages Subject: mm/migrate: support un-addressable ZONE_DEVICE page in migration Subject: mm/migrate: allow migrate_vma() to alloc new page on empty entry Subject: mm/device-public-memory: device memory cache coherent with CPU Subject: mm/hmm: add new helper to hotplug CDM memory region Subject: mm/hmm: avoid bloating arch that do not make use of HMM Subject: mm/hmm: fix build when HMM is disabled Subject: mm: remove useless vma parameter to offset_il_node Subject: userfaultfd: non-cooperative: closing the uffd without triggering SIGBUS Subject: mm/memory.c: remove reduntant check for write access Subject: mm: change the call sites of numa statistics items Subject: mm: update NUMA counter threshold size Subject: mm: consider the number in local CPUs when reading NUMA stats Subject: mm/mlock.c: use page_zone() instead of page_zone_id() Subject: mm/zsmalloc.c: change stat type parameter to int Subject: mm: fadvise: avoid fadvise for fs without backing device Subject: mm: memcontrol: use per-cpu stocks for socket memory uncharging Subject: mm/memory.c: fix mem_cgroup_oom_disable() call missing Subject: mm/sparse.c: fix typo in online_mem_sections Subject: tools/testing/selftests/kcmp/kcmp_test.c: add KCMP_EPOLL_TFD testing Subject: mm/page_alloc.c: apply gfp_allowed_mask before the first allocation attempt Subject: mm: kvfree the swap cluster info if the swap file is unsatisfactory Subject: mm/swapfile.c: fix swapon frontswap_map memory leak on error Subject: mm/mempolicy.c: remove BUG_ON() checks for VMA inside mpol_misplaced() Subject: fs, proc: remove priv argument from is_stack Subject: proc: uninline proc_create() Subject: fs, proc: unconditional cond_resched when reading smaps Subject: linux/kernel.h: move DIV_ROUND_DOWN_ULL() macro Subject: lib/string.c: add multibyte memset functions Subject: lib/string.c: add testcases for memset16/32/64 Subject: x86: implement memset16, memset32 & memset64 Subject: ARM: implement memset32 & memset64 Subject: alpha: add support for memset16 Subject: drivers/block/zram/zram_drv.c: convert to using memset_l Subject: drivers/scsi/sym53c8xx_2/sym_hipd.c: convert to use memset32 Subject: vga: optimise console scrolling Subject: treewide: make "nr_cpu_ids" unsigned Subject: arch: define CPU_BIG_ENDIAN for all fixed big endian archs Subject: arch/microblaze: add choice for endianness and update Makefile Subject: include: warn for inconsistent endian config definition Subject: bitops: avoid integer overflow in GENMASK(_ULL) Subject: rbtree: cache leftmost node internally Subject: rbtree: optimize root-check during rebalancing loop Subject: rbtree: add some additional comments for rebalancing cases Subject: lib/rbtree_test.c: make input module parameters Subject: lib/rbtree_test.c: add (inorder) traversal test Subject: lib/rbtree_test.c: support rb_root_cached Subject: sched/fair: replace cfs_rq->rb_leftmost Subject: sched/deadline: replace earliest dl and rq leftmost caching Subject: locking/rtmutex: replace top-waiter and pi_waiters leftmost caching Subject: block/cfq: replace cfq_rb_root leftmost caching Subject: lib/interval_tree: fast overlap detection Subject: lib/interval-tree: correct comment wrt generic flavor Subject: procfs: use faster rb_first_cached() Subject: fs/epoll: use faster rb_first_cached() Subject: mem/memcg: cache rightmost node Subject: block/cfq: cache rightmost rb_node Subject: lib/hexdump.c: return -EINVAL in case of error in hex2bin() Subject: lib: add test module for CONFIG_DEBUG_VIRTUAL Subject: lib/bitmap.c: make bitmap_parselist() thread-safe and much faster Subject: lib/test_bitmap.c: add test for bitmap_parselist() Subject: bitmap: introduce BITMAP_FROM_U64() Subject: lib/rhashtable: fix comment on locks_mul default value Subject: lib/string.c: check for kmalloc() failure Subject: lib/cmdline.c: remove meaningless comment Subject: radix-tree: must check __radix_tree_preload() return value Subject: lib/oid_registry.c: X.509: fix the buffer overflow in the utility function for OID string Subject: checkpatch: add --strict check for ifs with unnecessary parentheses Subject: checkpatch: fix typo in comment Subject: checkpatch: rename variables to avoid confusion Subject: checkpatch: add 6 missing types to --list-types Subject: binfmt_flat: delete two error messages for a failed memory allocation in decompress_exec() Subject: init: move stack canary initialization after setup_arch Subject: init/main.c: extract early boot entropy from the passed cmdline Subject: autofs: fix AT_NO_AUTOMOUNT not being honored Subject: autofs: make disc device user accessible Subject: autofs: make dev ioctl version and ismountpoint user accessible Subject: autofs: remove unused AUTOFS_IOC_EXPIRE_DIRECT/INDIRECT Subject: autofs: non functional header inclusion cleanup Subject: autofs: use AUTOFS_DEV_IOCTL_SIZE Subject: autofs: drop wrong comment Subject: autofs: use unsigned int/long instead of uint/ulong for ioctl args Subject: vfat: deduplicate hex2bin() Subject: test_kmod: remove paranoid UINT_MAX check on uint range processing Subject: test_kmod: flip INT checks to be consistent Subject: kmod: split out umh code into its own file Subject: MAINTAINERS: clarify kmod is just a kernel module loader Subject: kmod: split off umh headers into its own file Subject: kmod: move #ifdef CONFIG_MODULES wrapper to Makefile Subject: cpumask: make cpumask_next() out-of-line Subject: drivers/pps: aesthetic tweaks to PPS-related content Subject: drivers/pps: use surrounding "if PPS" to remove numerous dependency checks Subject: m32r: defconfig: cleanup from old Kconfig options Subject: mn10300: defconfig: cleanup from old Kconfig options Subject: sh: defconfig: cleanup from old Kconfig options Subject: kcov: support compat processes Subject: ipc: convert ipc_namespace.count from atomic_t to refcount_t Subject: ipc: convert sem_undo_list.refcnt from atomic_t to refcount_t Subject: ipc: convert kern_ipc_perm.refcount from atomic_t to refcount_t Subject: ipc/sem: drop sem_checkid helper Subject: ipc/sem: play nicer with large nsops allocations Subject: ipc: optimize semget/shmget/msgget for lots of keys ^ permalink raw reply [flat|nested] 530+ messages in thread
[parent not found: <CA+55aFwRXB5_kSuN7o+tqN6Eft6w5oZuLG3B8Rns=0ZZa2ihgA@mail.gmail.com>]
[parent not found: <CA+55aFw+z3HDT4s1C41j=d5_0QTSu8NLSSpnk_jxZ39w34xgnA@mail.gmail.com>]
* Re: incoming [not found] ` <CA+55aFw+z3HDT4s1C41j=d5_0QTSu8NLSSpnk_jxZ39w34xgnA@mail.gmail.com> @ 2017-09-09 18:09 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-09-09 18:09 UTC (permalink / raw) To: Linus Torvalds; +Cc: Stephen Rothwell, mm-commits On Sat, 9 Sep 2017 10:40:21 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote: > On Fri, Sep 8, 2017 at 6:27 PM, Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > Git does all of this right. Your quilt scripts are garbage. Please > > please start fixing this. > > > > I've worked around it by just editing the patch, but.. > > .. and I just realized that your patches must obviously be ok in your > tree, since you can apply them, and apparently Stephen can apply them > in linux-next. > > I'm assuming Stephen applies them from your quilt series directly, and > thus never saw the problem with bad locale conversion. > > Maybe we should just change the workflow, with you sending me a raw > tar-ball of the quilt series (or whatever the equivalent quilt > "bundle" is) as an attachment and we forego the traditional > patch-bombing model? > > That would avoid the locale issues with email. > Leave it with me - I need to sit down and have fiddle for a while. For some reason I can't recall I had LOCALE=C set, and using en_US.UTF-8 changes things quite a lot. And I need to figure out why the heck I did this: iconv -f latin1 | mailx -s "$subject" "$all" ! ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-09-06 23:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-09-06 23:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - various misc bits - DAX updates - OCFS2 - most of MM 119 patches, based on e7d0c41ecc2e372a81741a30894f556afec24315: Subject: metag/numa: remove the unused parent_node() macro Subject: mm: add vm_insert_mixed_mkwrite() Subject: dax: relocate some dax functions Subject: dax: use common 4k zero page for dax mmap reads Subject: dax: remove DAX code from page_cache_tree_insert() Subject: dax: move all DAX radix tree defs to fs/dax.c Subject: dax: explain how read(2)/write(2) addresses are validated Subject: dax: use PG_PMD_COLOUR instead of open coding Subject: dax: initialize variable pfn before using it Subject: modpost: simplify sec_name() Subject: ocfs2: make ocfs2_set_acl() static Subject: ocfs2: clean up some dead code Subject: slub: tidy up initialization ordering Subject: mm: add SLUB free list pointer obfuscation Subject: mm/slub.c: add a naive detection of double free or corruption Subject: mm: track actual nr_scanned during shrink_slab() Subject: drm/i915: wire up shrinkctl->nr_scanned Subject: mm/memory_hotplug: just build zonelist for newly added node Subject: mm, memory_hotplug: display allowed zones in the preferred ordering Subject: mm, memory_hotplug: remove zone restrictions Subject: zram: clean up duplicated codes in __zram_bvec_write Subject: zram: inline zram_compress Subject: zram: rename zram_decompress_page to __zram_bvec_read Subject: zram: add interface to specif backing device Subject: zram: add free space management in backing device Subject: zram: identify asynchronous IO's return value Subject: zram: write incompressible pages to backing device Subject: zram: read page from backing device Subject: zram: add config and doc file for writeback feature Subject: mm, page_alloc: rip out ZONELIST_ORDER_ZONE Subject: mm, page_alloc: remove boot pageset initialization from memory hotplug Subject: mm, page_alloc: do not set_cpu_numa_mem on empty nodes initialization Subject: mm, memory_hotplug: drop zone from build_all_zonelists Subject: mm, memory_hotplug: remove explicit build_all_zonelists from try_online_node Subject: mm, page_alloc: simplify zonelist initialization Subject: mm, page_alloc: remove stop_machine from build_all_zonelists Subject: mm, memory_hotplug: get rid of zonelists_mutex Subject: mm, sparse, page_ext: drop ugly N_HIGH_MEMORY branches for allocations Subject: mm, page_owner: make init_pages_in_zone() faster Subject: mm, page_ext: periodically reschedule during page_ext_init() Subject: mm, page_owner: don't grab zone->lock for init_pages_in_zone() Subject: mm/mremap: fail map duplication attempts for private mappings Subject: mm/gup: make __gup_device_* require THP Subject: mm/hugetlb.c: make huge_pte_offset() consistent and document behaviour Subject: mm: always flush VMA ranges affected by zap_page_range Subject: zsmalloc: zs_page_migrate: skip unnecessary loops but not return -EBUSY if zspage is not inuse Subject: mm, vmscan: do not loop on too_many_isolated for ever Subject: fscache: remove unused ->now_uncached callback Subject: mm: make pagevec_lookup() update index Subject: mm: implement find_get_pages_range() Subject: fs: fix performance regression in clean_bdev_aliases() Subject: ext4: use pagevec_lookup_range() in ext4_find_unwritten_pgoff() Subject: ext4: use pagevec_lookup_range() in writeback code Subject: hugetlbfs: use pagevec_lookup_range() in remove_inode_hugepages() Subject: fs: use pagevec_lookup_range() in page_cache_seek_hole_data() Subject: mm: use find_get_pages_range() in filemap_range_has_page() Subject: mm: remove nr_pages argument from pagevec_lookup{,_range}() Subject: mm, memcg: reset memory.low during memcg offlining Subject: cgroup: revert fa06235b8eb0 ("cgroup: reset css on destruction") Subject: mm/ksm.c: constify attribute_group structures Subject: mm/slub.c: constify attribute_group structures Subject: mm/page_idle.c: constify attribute_group structures Subject: mm/huge_memory.c: constify attribute_group structures Subject: mm/hugetlb.c: constify attribute_group structures Subject: mm: memcontrol: use int for event/state parameter in several functions Subject: mm, THP, swap: support to clear swap cache flag for THP swapped out Subject: mm, THP, swap: support to reclaim swap space for THP swapped out Subject: mm, THP, swap: make reuse_swap_page() works for THP swapped out Subject: mm, THP, swap: don't allocate huge cluster for file backed swap device Subject: block, THP: make block_device_operations.rw_page support THP Subject: mm: test code to write THP to swap device as a whole Subject: mm, THP, swap: support splitting THP for THP swap out Subject: memcg, THP, swap: support move mem cgroup charge for THP swapped out Subject: memcg, THP, swap: avoid to duplicated charge THP in swap cache Subject: memcg, THP, swap: make mem_cgroup_swapout() support THP Subject: mm, THP, swap: delay splitting THP after swapped out Subject: mm, THP, swap: add THP swapping out fallback counting Subject: shmem: shmem_charge: verify max_block is not exceeded before inode update Subject: shmem: introduce shmem_inode_acct_block Subject: userfaultfd: shmem: add shmem_mfill_zeropage_pte for userfaultfd support Subject: userfaultfd: mcopy_atomic: introduce mfill_atomic_pte helper Subject: userfaultfd: shmem: wire up shmem_mfill_zeropage_pte Subject: userfaultfd: report UFFDIO_ZEROPAGE as available for shmem VMAs Subject: userfaultfd: selftest: enable testing of UFFDIO_ZEROPAGE for shmem Subject: fs/sync.c: remove unnecessary NULL f_mapping check in sync_file_range Subject: include/linux/fs.h: remove unneeded forward definition of mm_struct Subject: mm: hugetlb: define system call hugetlb size encodings in single file Subject: mm: arch: consolidate mmap hugetlb size encodings Subject: mm: shm: use new hugetlb size encoding definitions Subject: mm: rename global_page_state to global_zone_page_state Subject: mm: userfaultfd: add feature to request for a signal delivery Subject: userfaultfd: selftest: add tests for UFFD_FEATURE_SIGBUS feature Subject: userfaultfd: selftest: exercise UFFDIO_COPY/ZEROPAGE -EEXIST Subject: userfaultfd: selftest: explicit failure if the SIGBUS test failed Subject: userfaultfd: call userfaultfd_unmap_prep only if __split_vma succeeds Subject: userfaultfd: provide pid in userfault msg Subject: userfaultfd: provide pid in userfault msg - add feat union Subject: mm, hugetlb: do not allocate non-migrateable gigantic pages from movable zones Subject: mm/vmstat: fix divide error at __fragmentation_index Subject: mm/vmalloc.c: halve the number of comparisons performed in pcpu_get_vm_areas() Subject: mm, devm_memremap_pages: use multi-order radix for ZONE_DEVICE lookups Subject: mm/shmem: add hugetlbfs support to memfd_create() Subject: selftests/memfd: add memfd_create hugetlbfs selftest Subject: mm/vmstat.c: fix wrong comment Subject: mm/vmalloc.c: don't reinvent the wheel but use existing llist API Subject: mm, swap: add swap readahead hit statistics Subject: mm, swap: fix swap readahead marking Subject: mm, swap: VMA based swap readahead Subject: mm, swap: add sysfs interface for VMA based swap readahead Subject: mm, swap: don't use VMA based swap readahead if HDD is used as swap Subject: z3fold: use per-cpu unbuddied lists Subject: mm, oom: do not rely on TIF_MEMDIE for memory reserves access Subject: mm: replace TIF_MEMDIE checks by tsk_is_oom_victim Subject: swap: choose swap device according to numa node Subject: mm: oom: let oom_reap_task and exit_mmap run concurrently Subject: mm: hugetlb: clear target sub-page last when clearing huge page Subject: mm: add /proc/pid/smaps_rollup Subject: x86,mpx: make mpx depend on x86-64 to free up VMA flag Subject: mm,fork: introduce MADV_WIPEONFORK ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-08-31 23:15 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-08-31 23:15 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 6 fixes, baed on 42ff72cf27027fa28dd79acabe01d9196f1480a7: Subject: mm,page_alloc: don't call __node_reclaim() with oom_lock held. Subject: kernel/kthread.c: kthread_worker: don't hog the cpu Subject: mm, uprobes: fix multiple free of ->uprobes_state.xol_area Subject: mm, madvise: ensure poisoned pages are removed from per-cpu lists Subject: include/linux/compiler.h: don't perform compiletime_assert with -O0 Subject: scripts/dtc: fix '%zx' warning ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-08-25 22:55 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-08-25 22:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 6 fixes, based on 90a6cd503982bfd33ce8c70eb49bd2dd33bc6325: Subject: PM/hibernate: touch NMI watchdog when creating snapshot Subject: mm, shmem: fix handling /sys/kernel/mm/transparent_hugepage/shmem_enabled Subject: dax: fix deadlock due to misaligned PMD faults Subject: mm/madvise.c: fix freeing of locked page with MADV_FREE Subject: fork: fix incorrect fput of ->exe_file causing use-after-free Subject: mm/memblock.c: reversed logic in memblock_discard() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-08-18 22:15 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-08-18 22:15 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 14 fixes, based on 039a8e38473323ed9f6c4415b4c3a36777efac34: Subject: mm: memcontrol: fix NULL pointer crash in test_clear_page_writeback() Subject: kernel/watchdog: fix Kconfig constraints for perf hardlockup watchdog Subject: wait: add wait_event_killable_timeout() Subject: kmod: fix wait on recursive loop Subject: test_kmod: fix description for -s -and -c parameters Subject: mm: discard memblock data later Subject: slub: fix per memcg cache leak on css offline Subject: mm: fix double mmap_sem unlock on MMF_UNSTABLE enforced SIGBUS Subject: mm, oom: fix potential data corruption when oom_reaper races with writer Subject: signal: don't remove SIGNAL_UNKILLABLE for traced tasks. Subject: mm/cma_debug.c: fix stack corruption due to sprintf usage Subject: mm/mempolicy: fix use after free when calling get_mempolicy Subject: mm/vmalloc.c: don't unconditonally use __GFP_HIGHMEM Subject: mm: revert x86_64 and arm64 ELF_ET_DYN_BASE base changes ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-08-10 22:23 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-08-10 22:23 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 21 fixes, based on 26273939ace935dd7553b31d279eab30b40f7b9a: Subject: mm: fix global NR_SLAB_.*CLAIMABLE counter reads Subject: mm: ratelimit PFNs busy info message Subject: userfaultfd: hugetlbfs: remove superfluous page unlock in VM_SHARED case Subject: test_kmod: fix spelling mistake: "EMTPY" -> "EMPTY" Subject: test_kmod: fix bug which allows negative values on two config options Subject: test_kmod: fix the lock in register_test_dev_kmod() Subject: test_kmod: fix small memory leak on filesystem tests Subject: fault-inject: fix wrong should_fail() decision in task context Subject: mm: migrate: prevent racy access to tlb_flush_pending Subject: mm: migrate: fix barriers around tlb_flush_pending Subject: Revert "mm: numa: defer TLB flush for THP migration as long as possible" Subject: mm: refactor TLB gathering API Subject: mm: make tlb_flush_pending global Subject: mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem Subject: mm: fix KSM data corruption Subject: MAINTAINERS: copy virtio on balloon_compaction.c Subject: mm/balloon_compaction.c: don't zero ballooned pages Subject: mm: fix list corruptions on shmem shrinklist Subject: rmap: do not call mmu_notifier_invalidate_page() under ptl Subject: zram: rework copy of compressor name in comp_algorithm_store() Subject: userfaultfd: replace ENOSPC with ESRCH in case mm has gone during copy/zeropage ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-08-02 20:31 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-08-02 20:31 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 16 fixes, based on 4d3f5d04d69e9479a3df88ceb0e2cd8188a49366: Subject: mm/hugetlb.c: __get_user_pages ignores certain follow_hugetlb_page errors Subject: pid: kill pidhash_size in pidhash_init() Subject: mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries Subject: userfaultfd: non-cooperative: notify about unmap of destination during mremap Subject: kasan: avoid -Wmaybe-uninitialized warning Subject: kthread: fix documentation build warning Subject: zram: do not free pool->size_class Subject: fortify: use WARN instead of BUG for now Subject: mm/page_io.c: fix oops during block io poll in swapin path Subject: mm: take memory hotplug lock within numa_zonelist_order_handler() Subject: userfaultfd_zeropage: return -ENOSPC in case mm has gone Subject: cpuset: fix a deadlock due to incomplete patching of cpusets_enabled() Subject: ipc: add missing container_of()s for randstruct Subject: userfaultfd: non-cooperative: flush event_wqh at release time Subject: mm: allow page_cache_get_speculative in interrupt context Subject: ocfs2: don't clear SGID when inheriting ACLs ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-07-14 21:46 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-07-14 21:46 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few leftovers - fault-injector rework - add a module loader test driver 13 patches, based on b86faee6d111294fa95a2e89b5f771b2da3c9782: Subject: mm: fix overflow check in expand_upwards() Subject: lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int Subject: MAINTAINERS: move the befs tree to kernel.org Subject: kernel/watchdog.c: use better pr_fmt prefix Subject: fault-inject: automatically detect the number base for fail-nth write interface Subject: fault-inject: parse as natural 1-based value for fail-nth write interface Subject: fault-inject: make fail-nth read/write interface symmetric Subject: fault-inject: simplify access check for fail-nth Subject: fault-inject: add /proc/<pid>/fail-nth Subject: xtensa: use generic fb.h Subject: MAINTAINERS: give kmod some maintainer love Subject: kmod: add test driver to stress test the module loader Subject: kmod: throttle kmod thread limit ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-07-12 21:32 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-07-12 21:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - various misc things - kexec updates - sysctl core updates - scripts/gdb udpates - checkpoint-restart updates - ipc updates - kernel/watchdog updates - Kees's "rough equivalent to the glibc _FORTIFY_SOURCE=1 feature" - "stackprotector: ascii armor the stack canary" - more MM bits - checkpatch updates 96 patches, based on 235b84fc862ae2637dc0dabada18d97f1bfc18e1: Subject: include/linux/dcache.h: use unsigned chars in struct name_snapshot Subject: kernel.h: handle pointers to arrays better in container_of() Subject: mm/memory.c: mark create_huge_pmd() inline to prevent build failure Subject: kernel/fork.c: virtually mapped stacks: do not disable interrupts Subject: kexec: move vmcoreinfo out of the kernel's .bss section Subject: powerpc/fadump: use the correct VMCOREINFO_NOTE_SIZE for phdr Subject: kdump: protect vmcoreinfo data under the crash memory Subject: kexec/kdump: minor Documentation updates for arm64 and Image Subject: sysctl: fix lax sysctl_check_table() sanity check Subject: sysctl: kdoc'ify sysctl_writes_strict Subject: sysctl: fold sysctl_writes_strict checks into helper Subject: sysctl: simplify unsigned int support Subject: sysctl: add unsigned int range support Subject: test_sysctl: add dedicated proc sysctl test driver Subject: test_sysctl: add generic script to expand on tests Subject: test_sysctl: test against PAGE_SIZE for int Subject: test_sysctl: add simple proc_dointvec() case Subject: test_sysctl: add simple proc_douintvec() case Subject: test_sysctl: test against int proc_dointvec() array support Subject: kernel/sysctl_binary.c: check name array length in deprecated_sysctl_warning() Subject: random: do not ignore early device randomness Subject: bfs: fix sanity checks for empty files Subject: fs/Kconfig: kill CONFIG_PERCPU_RWSEM some more Subject: scripts/gdb: add lx-fdtdump command Subject: scripts/gdb: lx-dmesg: cast log_buf to void* for addr fetch Subject: scripts/gdb: lx-dmesg: use explicit encoding=utf8 errors=replace Subject: kfifo: clean up example to not use page_link Subject: procfs: fdinfo: extend information about epoll target files Subject: kcmp: add KCMP_EPOLL_TFD mode to compare epoll target files Subject: kcmp: fs/epoll: wrap kcmp code with CONFIG_CHECKPOINT_RESTORE Subject: fault-inject: support systematic fault injection Subject: ipc/sem.c: remove sem_base, embed struct sem Subject: ipc: merge ipc_rcu and kern_ipc_perm Subject: include/linux/sem.h: correctly document sem_ctime Subject: ipc: drop non-RCU allocation Subject: ipc/sem: do not use ipc_rcu_free() Subject: ipc/shm: do not use ipc_rcu_free() Subject: ipc/msg: do not use ipc_rcu_free() Subject: ipc/util: drop ipc_rcu_free() Subject: ipc/sem: avoid ipc_rcu_alloc() Subject: ipc/shm: avoid ipc_rcu_alloc() Subject: ipc/msg: avoid ipc_rcu_alloc() Subject: ipc/util: drop ipc_rcu_alloc() Subject: ipc/sem.c: avoid ipc_rcu_putref for failed ipc_addid() Subject: ipc/shm.c: avoid ipc_rcu_putref for failed ipc_addid() Subject: ipc/msg.c: avoid ipc_rcu_putref for failed ipc_addid() Subject: ipc: move atomic_set() to where it is needed Subject: ipc/shm: remove special shm_alloc/free Subject: ipc/msg: remove special msg_alloc/free Subject: ipc/sem: drop __sem_free() Subject: ipc/util.h: update documentation for ipc_getref() and ipc_putref() Subject: net/netfilter/x_tables.c: use kvmalloc() in xt_alloc_table_info() Subject: kernel/watchdog: remove unused declaration Subject: kernel/watchdog: introduce arch_touch_nmi_watchdog() Subject: kernel/watchdog: split up config options Subject: kernel/watchdog: provide watchdog_nmi_reconfigure() for arch watchdogs Subject: powerpc/64s: implement arch-specific hardlockup watchdog Subject: efi: avoid fortify checks in EFI stub Subject: kexec_file: adjust declaration of kexec_purgatory Subject: IB/rxe: do not copy extra stack memory to skb Subject: powerpc: don't fortify prom_init Subject: powerpc: make feature-fixup tests fortify-safe Subject: include/linux/string.h: add the option of fortified string.h functions Subject: sh: mark end of BUG() implementation as unreachable Subject: random,stackprotect: introduce get_random_canary function Subject: fork,random: use get_random_canary() to set tsk->stack_canary Subject: x86: ascii armor the x86_64 boot init stack canary Subject: arm64: ascii armor the arm64 boot init stack canary Subject: sh64: ascii armor the sh64 boot init stack canary Subject: x86/mmap: properly account for stack randomization in mmap_base Subject: arm64/mmap: properly account for stack randomization in mmap_base Subject: powerpc,mmap: properly account for stack randomization in mmap_base Subject: MIPS: do not use __GFP_REPEAT for order-0 request Subject: mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic Subject: xfs: map KM_MAYFAIL to __GFP_RETRY_MAYFAIL Subject: mm: kvmalloc support __GFP_RETRY_MAYFAIL for all sizes Subject: drm/i915: use __GFP_RETRY_MAYFAIL Subject: mm, migration: do not trigger OOM killer when migrating memory Subject: checkpatch: improve the STORAGE_CLASS test Subject: ARM: KVM: move asmlinkage before type Subject: ARM: HP Jornada 7XX: move inline before return type Subject: CRIS: gpio: move inline before return type Subject: FRV: tlbflush: move asmlinkage before return type Subject: ia64: move inline before return type Subject: ia64: sn: pci: move inline before type Subject: m68k: coldfire: move inline before return type Subject: MIPS: SMP: move asmlinkage before return type Subject: sh: move inline before return type Subject: x86/efi: move asmlinkage before return type Subject: drivers: s390: move static and inline before return type Subject: drivers: tty: serial: move inline before return type Subject: USB: serial: safe_serial: move __inline__ before return type Subject: video: fbdev: intelfb: move inline before return type Subject: video: fbdev: omap: move inline before return type Subject: ARM: samsung: usb-ohci: move inline before return type Subject: writeback: rework wb_[dec|inc]_stat family of functions ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-07-10 22:46 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-07-10 22:46 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - most of the rest of MM - KASAN updates - lib/ updates - checkpatch updates - some binfmt_elf changes - various misc bits 115 patches, based on 9eb788800510ae1a6bc419636a66071ee4deafd5: Subject: swap: add block io poll in swapin path Subject: mm, page_alloc: fallback to smallest page when not stealing whole pageblock Subject: mm/memory.c: convert to DEFINE_DEBUGFS_ATTRIBUTE Subject: mm, vmscan: avoid thrashing anon lru when free + file is low Subject: mm/memory_hotplug.c: add NULL check to avoid potential NULL pointer dereference Subject: mm/zsmalloc.c: fix -Wunneeded-internal-declaration warning Subject: fs/buffer.c: make bh_lru_install() more efficient Subject: mm: hugetlb: prevent reuse of hwpoisoned free hugepages Subject: mm: hugetlb: return immediately for hugetlb page in __delete_from_page_cache() Subject: mm: hwpoison: change PageHWPoison behavior on hugetlb pages Subject: mm: hugetlb: soft-offline: dissolve source hugepage after successful migration Subject: mm: soft-offline: dissolve free hugepage if soft-offlined Subject: mm: hwpoison: introduce memory_failure_hugetlb() Subject: mm: hwpoison: dissolve in-use hugepage in unrecoverable memory error Subject: mm: hugetlb: delete dequeue_hwpoisoned_huge_page() Subject: mm: hwpoison: introduce idenfity_page_state Subject: mm, vmpressure: pass-through notification support Subject: mm: make PR_SET_THP_DISABLE immediately active Subject: mm/memcontrol: exclude @root from checks in mem_cgroup_low Subject: vmalloc: show lazy-purged vma info in vmallocinfo Subject: mm/cma.c: warn if the CMA area could not be activated Subject: mm/hugetlb.c: warn the user when issues arise on boot due to hugepages Subject: oom, trace: remove ENUM evaluation of COMPACTION_FEEDBACK Subject: mm: improve readability of transparent_hugepage_enabled() Subject: mm: always enable thp for dax mappings Subject: include/linux/page_ref.h: ensure page_ref_unfreeze is ordered against prior accesses Subject: mm/migrate.c: stabilise page count when migrating transparent hugepages Subject: zram: use __sysfs_match_string() helper Subject: mm, memory_hotplug: support movable_node for hotpluggable nodes Subject: mm, memory_hotplug: simplify empty node mask handling in new_node_page Subject: hugetlb, memory_hotplug: prefer to use reserved pages for migration Subject: mm: unify new_node_page and alloc_migrate_target Subject: mm, hugetlb: schedule when potentially allocating many hugepages Subject: mm, memcg: fix potential undefined behavior in mem_cgroup_event_ratelimit() Subject: mm/hugetlb.c: replace memfmt with string_get_size Subject: mm/truncate.c: fix THP handling in invalidate_mapping_pages() Subject: userfaultfd: non-cooperative: add madvise() event for MADV_FREE request Subject: mm/oom_kill.c: add tracepoints for oom reaper-related events Subject: mm, hugetlb: unclutter hugetlb allocation layers Subject: hugetlb: add support for preferred node to alloc_huge_page_nodemask Subject: mm, hugetlb, soft_offline: use new_page_nodemask for soft offline migration Subject: mm: avoid taking zone lock in pagetypeinfo_showmixed() Subject: mm: drop useless local parameters of __register_one_node() Subject: fs/proc/task_mmu.c: remove obsolete comment in show_map_vma() Subject: mm/page_alloc.c: eliminate unsigned confusion in __rmqueue_fallback Subject: mm/swap_slots.c: don't disable preemption while taking the per-CPU cache Subject: include/linux/mmzone.h: remove ancient/ambiguous comment Subject: include/linux/backing-dev.h: simplify wb_stat_sum Subject: mm: document highmem_is_dirtyable sysctl Subject: mm/memory_hotplug.c: remove unused local zone_type from __remove_zone() Subject: cma: fix calculation of aligned offset Subject: mm/balloon_compaction.c: enqueue zero page to balloon device Subject: mm/mmap.c: do not blow on PROT_NONE MAP_FIXED holes in the stack Subject: mm/mmap.c: expand_downwards: don't require the gap if !vm_prev Subject: mm/list_lru.c: fix list_lru_count_node() to be race free Subject: fs/dcache.c: fix spin lockup issue on nlru->lock Subject: mm: use dedicated helper to access rlimit value Subject: mm: swap: provide lru_add_drain_all_cpuslocked() Subject: mm/memory-hotplug: switch locking to a percpu rwsem Subject: mm: disallow early_pfn_to_nid on configurations which do not implement it Subject: zram: constify attribute_group structures. Subject: mm/zsmalloc: simplify zs_max_alloc_size handling Subject: mm/kasan/kasan_init.c: use kasan_zero_pud for p4d table Subject: mm/kasan: get rid of speculative shadow checks Subject: x86/kasan: don't allocate extra shadow memory Subject: arm64/kasan: don't allocate extra shadow memory Subject: mm/kasan: add support for memory hotplug Subject: mm/kasan/kasan.c: rename XXX_is_zero to XXX_is_nonzero Subject: kasan: make get_wild_bug_type() static Subject: frv: remove wrapper header for asm/device.h Subject: frv: use generic fb.h Subject: frv: cmpxchg: implement cmpxchg64() Subject: fs/proc/generic.c: switch to ida_simple_get/remove Subject: asm-generic/bug.h: declare struct pt_regs; before function prototype Subject: linux/bug.h: correct formatting of block comment Subject: linux/bug.h: correct "(foo*)" should be "(foo *)" Subject: linux/bug.h: correct "space required before that '-'" Subject: bug: split BUILD_BUG stuff out into <linux/build_bug.h> Subject: ARM: fix rd_size declaration Subject: kernel/ksysfs.c: constify attribute_group structures. Subject: kernel/groups.c: use sort library function Subject: kernel/kallsyms.c: replace all_var with IS_ENABLED(CONFIG_KALLSYMS_ALL) Subject: MAINTAINERS: give proc sysctl some maintainer love Subject: lib/test_bitmap.c: add optimisation tests Subject: bitmap: optimise bitmap_set and bitmap_clear of a single bit Subject: include/linux/bitmap.h: turn bitmap_set and bitmap_clear into memset when possible Subject: bitmap: use memcmp optimisation in more situations Subject: lib/kstrtox.c: delete end-of-string test Subject: lib/kstrtox.c: use "unsigned int" more Subject: lib/interval_tree_test.c: allow the module to be compiled-in Subject: lib/interval_tree_test.c: make test options module parameters Subject: lib/interval_tree_test.c: allow users to limit scope of endpoint Subject: lib/interval_tree_test.c: allow full tree search Subject: lib/rhashtable.c: use kvzalloc() in bucket_table_alloc() when possible Subject: lib/extable.c: use bsearch() library function in search_extable() Subject: lib/bsearch.c: micro-optimize pivot position calculation Subject: checkpatch: improve the unnecessary OOM message test Subject: checkpatch: warn when a MAINTAINERS entry isn't [A-Z]:\t Subject: checkpatch: [HLP]LIST_HEAD is also declaration Subject: checkpatch: fix stepping through statements with $stat and ctx_statement_block Subject: checkpatch: remove false warning for commit reference Subject: checkpatch: improve tests for multiple line function definitions Subject: checkpatch: silence perl 5.26.0 unescaped left brace warnings Subject: checkpatch: change format of --color argument to --color[=WHEN] Subject: checkpatch: improve macro reuse test Subject: checkpatch: improve multi-line alignment test Subject: fs, epoll: short circuit fetching events if thread has been killed Subject: binfmt_elf: use ELF_ET_DYN_BASE only for PIE Subject: arm: move ELF_ET_DYN_BASE to 4MB Subject: arm64: move ELF_ET_DYN_BASE to 4GB / 4MB Subject: powerpc: move ELF_ET_DYN_BASE to 4GB / 4MB Subject: s390: reduce ELF_ET_DYN_BASE Subject: binfmt_elf: safely increment argv pointers Subject: kernel/signal.c: avoid undefined behaviour in kill_something_info Subject: kernel/exit.c: avoid undefined behaviour when calling wait4() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-07-06 22:34 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-07-06 22:34 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few hotfixes - various misc updates - ocfs2 updates - most of MM 108 patches, based on 9ced560b82606b35adb33a27012a148d418a4c1f: Subject: compiler, clang: always inline when CONFIG_OPTIMIZE_INLINING is disabled Subject: thp, mm: fix crash due race in MADV_FREE handling Subject: kernel/extable.c: mark core_kernel_text notrace Subject: mn10300: remove wrapper header for asm/device.h Subject: mn10300: use generic fb.h Subject: tile: provide default ioremap declaration Subject: scripts/gen_initramfs_list.sh: teach INITRAMFS_ROOT_UID and INITRAMFS_ROOT_GID that -1 means "current user". Subject: ramfs: clarify help text that compression applies to ramfs as well as legacy ramdisk. Subject: scripts/spelling.txt: add a bunch more spelling mistakes Subject: provide linux/set_memory.h Subject: kernel/power/snapshot.c: use linux/set_memory.h Subject: kernel/module.c: use linux/set_memory.h Subject: include/linux/filter.h: use linux/set_memory.h Subject: drivers/sh/intc/virq.c: delete an error message for a failed memory allocation in add_virq_to_pirq() Subject: ocfs2: fix a static checker warning Subject: ocfs2: use magic.h Subject: ocfs2: free 'dummy_sc' in sc_fop_release() to prevent memory leak Subject: ocfs2: constify attribute_group structures Subject: fs/file.c: replace alloc_fdmem() with kvmalloc() alternative Subject: mm/slub.c: remove a redundant assignment in ___slab_alloc() Subject: mm/slub: reset cpu_slab's pointer in deactivate_slab() Subject: mm/slub.c: pack red_left_pad with another int to save a word Subject: mm/slub.c: wrap cpu_slab->partial in CONFIG_SLUB_CPU_PARTIAL Subject: mm/slub.c: wrap kmem_cache->cpu_partial in config CONFIG_SLUB_CPU_PARTIAL Subject: mm/slab.c: replace open-coded round-up code with ALIGN Subject: mm: allow slab_nomerge to be set at build time Subject: mm, sparsemem: break out of loops early Subject: mm/mmap.c: mark protection_map as __ro_after_init Subject: mm/vmscan.c: fix unsequenced modification and access warning Subject: mm/nobootmem.c: return 0 when start_pfn equals end_pfn Subject: ksm: introduce ksm_max_page_sharing per page deduplication limit Subject: ksm: fix use after free with merge_across_nodes = 0 Subject: ksm: cleanup stable_node chain collapse case Subject: ksm: swap the two output parameters of chain/chain_prune Subject: ksm: optimize refile of stable_node_dup at the head of the chain Subject: zram: count same page write as page_stored Subject: mm/vmstat.c: standardize file operations variable names Subject: mm, THP, swap: delay splitting THP during swap out Subject: mm, THP, swap: unify swap slot free functions to put_swap_page Subject: mm, THP, swap: move anonymous THP split logic to vmscan Subject: mm, THP, swap: check whether THP can be split firstly Subject: mm, THP, swap: enable THP swap optimization only if has compound map Subject: mm: remove return value from init_currently_empty_zone Subject: mm, memory_hotplug: use node instead of zone in can_online_high_movable Subject: mm: drop page_initialized check from get_nid_for_pfn Subject: mm, memory_hotplug: get rid of is_zone_device_section Subject: mm, memory_hotplug: split up register_one_node() Subject: mm, memory_hotplug: consider offline memblocks removable Subject: mm: consider zone which is not fully populated to have holes Subject: mm, compaction: skip over holes in __reset_isolation_suitable Subject: mm: __first_valid_page skip over offline pages Subject: mm, vmstat: skip reporting offline pages in pagetypeinfo Subject: mm, memory_hotplug: do not associate hotadded memory to zones until online Subject: mm, memory_hotplug: fix MMOP_ONLINE_KEEP behavior Subject: mm, memory_hotplug: do not assume ZONE_NORMAL is default kernel zone Subject: mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory Subject: mm, memory_hotplug: fix the section mismatch warning Subject: mm, memory_hotplug: remove unused cruft after memory hotplug rework Subject: kernel/exit.c: don't include unused userfaultfd_k.h Subject: fs/userfaultfd.c: drop dead code Subject: mm/madvise: enable (soft|hard) offline of HugeTLB pages at PGD level Subject: mm/hugetlb/migration: use set_huge_pte_at instead of set_pte_at Subject: mm/follow_page_mask: split follow_page_mask to smaller functions. Subject: mm/hugetlb: export hugetlb_entry_migration helper Subject: mm/follow_page_mask: add support for hugetlb pgd entries Subject: mm/hugetlb: move default definition of hugepd_t earlier in the header Subject: mm/follow_page_mask: add support for hugepage directory entry Subject: powerpc/hugetlb: add follow_huge_pd implementation for ppc64 Subject: powerpc/mm/hugetlb: remove follow_huge_addr for powerpc Subject: powerpc/hugetlb: enable hugetlb migration for ppc64 Subject: mm: zero hash tables in allocator Subject: mm: update callers to use HASH_ZERO flag Subject: mm: adaptive hash table scaling Subject: mm/hugetlb: clean up ARCH_HAS_GIGANTIC_PAGE Subject: powerpc/mm/hugetlb: add support for 1G huge pages Subject: mm/page_alloc.c: mark bad_range() and meminit_pfn_in_nid() as __maybe_unused Subject: mm: drop NULL return check of pte_offset_map_lock() Subject: arm64: hugetlb: refactor find_num_contig() Subject: arm64: hugetlb: remove spurious calls to huge_ptep_offset() Subject: mm, gup: remove broken VM_BUG_ON_PAGE compound check for hugepages Subject: mm, gup: ensure real head page is ref-counted when using hugepages Subject: mm/hugetlb: add size parameter to huge_pte_offset() Subject: mm/hugetlb: allow architectures to override huge_pte_clear() Subject: mm/hugetlb: introduce set_huge_swap_pte_at() helper Subject: mm: rmap: use correct helper when poisoning hugepages Subject: mm, page_alloc: fix more premature OOM due to race with cpuset update Subject: mm, mempolicy: stop adjusting current->il_next in mpol_rebind_nodemask() Subject: mm, page_alloc: pass preferred nid instead of zonelist to allocator Subject: mm, mempolicy: simplify rebinding mempolicies when updating cpusets Subject: mm, cpuset: always use seqlock when changing task's nodemask Subject: mm, mempolicy: don't check cpuset seqlock where it doesn't matter Subject: mm: kmemleak: slightly reduce the size of some structures on 64-bit architectures Subject: mm: kmemleak: factor object reference updating out of scan_block() Subject: mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects Subject: mm: per-cgroup memory reclaim stats Subject: mm/oom_kill: count global and memory cgroup oom kills Subject: mm/swapfile.c: sort swap entries before free Subject: mm/zswap.c: delete an error message for a failed memory allocation in zswap_pool_create() Subject: mm/zswap.c: improve a size determination in zswap_frontswap_init() Subject: mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare() Subject: mm: vmstat: move slab statistics from zone to node counters Subject: mm: memcontrol: use the node-native slab memory counters Subject: mm: memcontrol: use generic mod_memcg_page_state for kmem pages Subject: mm: memcontrol: per-lruvec stats infrastructure Subject: mm: memcontrol: account slab stats per lruvec Subject: mm, memory_hotplug: drop artificial restriction on online/offline Subject: mm, memory_hotplug: drop CONFIG_MOVABLE_NODE Subject: mm, memory_hotplug: move movable_node to the hotplug proper ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-06-23 22:08 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-06-23 22:08 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 8 fixes, based on a38371cba67539ce6a5d5324db34bc2ddaf66cc1: Subject: mm, thp: remove cond_resched from __collapse_huge_page_copy Subject: mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings Subject: autofs: sanity check status reported with AUTOFS_DEV_IOCTL_FAIL Subject: fs/dax.c: fix inefficiency in dax_writeback_mapping_range() Subject: lib/cmdline.c: fix get_options() overflow while parsing ranges Subject: slub: make sysfs file removal asynchronous Subject: ocfs2: fix deadlock caused by recursive locking in xattr Subject: fs/exec.c: account for argv/envp pointers ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-06-16 21:02 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-06-16 21:02 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 5 fixes, based on ab2789b72df3cf7a01e30636ea86cbbf44ba2e99: Subject: mm/memory-failure.c: use compound_head() flags for huge pages Subject: swap: cond_resched in swap_cgroup_prepare() Subject: mm: numa: avoid waiting on freed migrated pages Subject: userfaultfd: shmem: handle coredumping in handle_userfault() Subject: mm: correct the comment when reclaimed pages exceed the scanned pages ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-06-02 21:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-06-02 21:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 15 fixes, baed on c531577bcdac51225f50033e0c89644873f4dc6d: Subject: ksm: prevent crash after write_protect_page fails Subject: include/linux/gfp.h: fix ___GFP_NOLOCKDEP value Subject: frv: declare jiffies to be located in the .data section Subject: mm: clarify why we want kmalloc before falling backto vmallock Subject: initramfs: fix disabling of initramfs (and its compression) Subject: slub/memcg: cure the brainless abuse of sysfs attributes Subject: pcmcia: remove left-over %Z format Subject: mm/page_alloc.c: make sure OOM victim can try allocations with no watermarks once Subject: mm: avoid spurious 'bad pmd' warning messages Subject: dax: fix race between colliding PMD & PTE entries Subject: mm/migrate: fix refcount handling when !hugepage_migration_supported() Subject: mlock: fix mlock count can not decrease in race condition Subject: mm/hugetlb: report -EHWPOISON not -EFAULT when FOLL_HWPOISON is specified Subject: mm: consider memblock reservations for deferred memory initialization sizing Subject: scripts/gdb: make lx-dmesg command work (reliably) ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-05-12 22:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-05-12 22:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 15 fixes, based on deac8429d62ca19c1571853e2a18f60e760ee04c: Subject: hwpoison, memcg: forcibly uncharge LRU pages Subject: time: delete current_fs_time() Subject: mm, vmstat: Remove spurious WARN() during zoneinfo print Subject: gcov: support GCC 7.1 Subject: mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin Subject: mm, vmalloc: fix vmalloc users tracking properly Subject: Tigran has moved Subject: dax: prevent invalidation of mapped DAX entries Subject: mm: fix data corruption due to stale mmap reads Subject: ext4: return to starting transaction in ext4_dax_huge_fault() Subject: dax: fix data corruption when fault races with write Subject: dax: fix PMD data corruption when fault races with write Subject: mm, thp: copying user pages must schedule on collapse Subject: mm: vmscan: scan until it finds eligible pages Subject: mm, docs: update memory.stat description with workingset* entries ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-05-08 22:53 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-05-08 22:53 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - the rest of MM - various misc things - procfs updates - lib/ updates - checkpatch updates - kdump/kexec updates - add kvmalloc helpers, use them - time helper updates for Y2038 issues. We're almost ready to remove current_fs_time() but that awaits a btrfs merge. - add tracepoints to DAX. 114 patches, based on 13e0988140374123bead1dd27c287354cb95108e: Subject: mm, compaction: reorder fields in struct compact_control Subject: mm, compaction: remove redundant watermark check in compact_finished() Subject: mm, page_alloc: split smallest stolen page in fallback Subject: mm, page_alloc: count movable pages when stealing from pageblock Subject: mm, compaction: change migrate_async_suitable() to suitable_migration_source() Subject: mm, compaction: add migratetype to compact_control Subject: mm, compaction: restrict async compaction to pageblocks of same migratetype Subject: mm, compaction: finish whole pageblock to reduce fragmentation Subject: fs/proc/inode.c: remove cast from memory allocation Subject: proc/sysctl: fix the int overflow for jiffies conversion Subject: drivers/virt/fsl_hypervisor.c: use get_user_pages_unlocked() Subject: jiffies.h: declare jiffies and jiffies_64 with ____cacheline_aligned_in_smp Subject: make help: add tools help target Subject: kernel/hung_task.c: defer showing held locks Subject: drivers/misc/vmw_vmci/vmci_queue_pair.c: fix a couple integer overflow tests Subject: drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR() Subject: Revert "lib/test_sort.c: make it explicitly non-modular" Subject: lib: add module support to array-based sort tests Subject: lib: add module support to linked list sorting tests Subject: firmware/Makefile: force recompilation if makefile changes Subject: checkpatch: remove obsolete CONFIG_EXPERIMENTAL checks Subject: checkpatch: add ability to find bad uses of vsprintf %p<foo> extensions Subject: checkpatch: improve EMBEDDED_FUNCTION_NAME test Subject: checkpatch: allow space leading blank lines in email headers Subject: checkpatch: avoid suggesting struct definitions should be const Subject: checkpatch: improve MULTISTATEMENT_MACRO_USE_DO_WHILE test Subject: checkpatch: clarify the EMBEDDED_FUNCTION_NAME message Subject: checkpatch: special audit for revert commit line Subject: checkpatch: improve k.alloc with multiplication and sizeof test Subject: checkpatch: add --typedefsfile Subject: checkpatch: improve the embedded function name test for patch contexts Subject: checkpatch: improve the SUSPECT_CODE_INDENT test Subject: reiserfs: use designated initializers Subject: fork: free vmapped stacks in cache when cpus are offline Subject: cpumask: make "nr_cpumask_bits" unsigned Subject: crash: move crashkernel parsing and vmcore related code under CONFIG_CRASH_CORE Subject: ia64: reuse append_elf_note() and final_note() functions Subject: powerpc/fadump: remove dependency with CONFIG_KEXEC Subject: powerpc/fadump: reuse crashkernel parameter for fadump memory reservation Subject: powerpc/fadump: update documentation about crashkernel parameter reuse Subject: pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid() Subject: ns: allow ns_entries to have custom symlink content Subject: pidns: expose task pid_ns_for_children to userspace Subject: taskstats: add e/u/stime for TGID command Subject: kcov: simplify interrupt check Subject: lib/fault-inject.c: use correct check for interrupts Subject: lib/zlib_inflate/inftrees.c: fix potential buffer overflow Subject: initramfs: provide a way to ignore image provided by bootloader Subject: initramfs: use vfs_stat/lstat directly Subject: ipc/shm: some shmat cleanups Subject: sysv,ipc: cacheline align kern_ipc_perm Subject: mm: introduce kv[mz]alloc helpers Subject: mm, vmalloc: properly track vmalloc users Subject: mm: support __GFP_REPEAT in kvmalloc_node for >32kB Subject: lib/rhashtable.c: simplify a strange allocation pattern Subject: net/ipv6/ila/ila_xlat.c: simplify a strange allocation pattern Subject: fs/xattr.c: zero out memory copied to userspace in getxattr Subject: treewide: use kv[mz]alloc* rather than opencoded variants Subject: net: use kvmalloc with __GFP_REPEAT rather than open coded variant Subject: drivers/md/dm-ioctl.c: use kvmalloc rather than opencoded variant Subject: drivers/md/bcache/super.c: use kvmalloc Subject: mm, swap: use kvzalloc to allocate some swap data structures Subject: mm, vmalloc: use __GFP_HIGHMEM implicitly Subject: scripts/spelling.txt: add "memory" pattern and fix typos Subject: scripts/spelling.txt: add regsiter -> register spelling mistake Subject: scripts/spelling.txt: add "intialise(d)" pattern and fix typo instances Subject: treewide: spelling: correct diffrent[iate] and banlance typos Subject: treewide: move set_memory_* functions away from cacheflush.h Subject: arm: use set_memory.h header Subject: arm64: use set_memory.h header Subject: s390: use set_memory.h header Subject: x86: use set_memory.h header Subject: agp: use set_memory.h header Subject: drm: use set_memory.h header Subject: drivers/hwtracing/intel_th/msu.c: use set_memory.h header Subject: drivers/watchdog/hpwdt.c: use set_memory.h header Subject: include/linux/filter.h: use set_memory.h header Subject: kernel/module.c: use set_memory.h header Subject: kernel/power/snapshot.c: use set_memory.h header Subject: alsa: use set_memory.h header Subject: drivers/misc/sram-exec.c: use set_memory.h header Subject: drivers/video/fbdev/vermilion/vermilion.c: use set_memory.h header Subject: drivers/staging/media/atomisp/pci/atomisp2: use set_memory.h Subject: treewide: decouple cacheflush.h and set_memory.h Subject: kref: remove WARN_ON for NULL release functions Subject: drivers/scsi/megaraid: remove expensive inline from megasas_return_cmd Subject: include/linux/uaccess.h: remove expensive WARN_ON in pagefault_disabled_dec Subject: fs: semove set but not checked AOP_FLAG_UNINTERRUPTIBLE flag Subject: Documentation/vm/transhuge.txt: fix trivial typos Subject: format-security: move static strings to const Subject: fs: f2fs: use ktime_get_real_seconds for sit_info times Subject: trace: make trace_hwlat timestamp y2038 safe Subject: fs: cifs: replace CURRENT_TIME by other appropriate apis Subject: fs: ceph: CURRENT_TIME with ktime_get_real_ts() Subject: fs: ufs: use ktime_get_real_ts64() for birthtime Subject: fs: ubifs: replace CURRENT_TIME_SEC with current_time Subject: lustre: replace CURRENT_TIME macro Subject: apparmorfs: replace CURRENT_TIME with current_time() Subject: gfs2: replace CURRENT_TIME with current_time Subject: time: delete CURRENT_TIME_SEC and CURRENT_TIME Subject: mm/huge_memory.c: use zap_deposited_table() more Subject: mm/huge_memory.c: deposit a pgtable for DAX PMD faults when required Subject: mm: prevent potential recursive reclaim due to clearing PF_MEMALLOC Subject: mm: introduce memalloc_noreclaim_{save,restore} Subject: treewide: convert PF_MEMALLOC manipulations to new helpers Subject: mtd: nand: nandsim: convert to memalloc_noreclaim_*() Subject: dax: add tracepoints to dax_iomap_pte_fault() Subject: dax: add tracepoints to dax_pfn_mkwrite() Subject: dax: add tracepoints to dax_load_hole() Subject: dax: add tracepoints to dax_writeback_mapping_range() Subject: dax: add tracepoint to dax_writeback_one() Subject: dax: add tracepoint to dax_insert_mapping() Subject: selftests/vm: add a test for virtual address range mapping Subject: drivers/staging/ccree/ssi_hash.c: fix build with gcc-4.4.4 ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-05-03 21:50 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-05-03 21:50 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few misc things - most of MM - KASAN updates 102 patches, based on 46f0537b1ecf672052007c97f102a7e6bf0791e4: Subject: lib/dma-debug.c: make locking work for RT Subject: scripts/spelling.txt: add several more common spelling mistakes Subject: blackfin: bf609: let clk_disable() return immediately if clk is NULL Subject: fs/ocfs2/cluster: use setup_timer Subject: ocfs2: o2hb: revert hb threshold to keep compatible Subject: fs/ocfs2/cluster: use offset_in_page() macro Subject: slab: avoid IPIs when creating kmem caches Subject: mm: fix 100% CPU kswapd busyloop on unreclaimable nodes Subject: mm: fix check for reclaimable pages in PF_MEMALLOC reclaim throttling Subject: mm: remove seemingly spurious reclaimability check from laptop_mode gating Subject: mm: remove unnecessary reclaimability check from NUMA balancing target Subject: mm: don't avoid high-priority reclaim on unreclaimable nodes Subject: mm: don't avoid high-priority reclaim on memcg limit reclaim Subject: mm: delete NR_PAGES_SCANNED and pgdat_reclaimable() Subject: Revert "mm, vmscan: account for skipped pages as a partial scan" Subject: mm: remove unnecessary back-off function when retrying page reclaim Subject: mm/page-writeback.c: use setup_deferrable_timer Subject: mm: delete unnecessary TTU_* flags Subject: mm: don't assume anonymous pages have SwapBacked flag Subject: mm: move MADV_FREE pages into LRU_INACTIVE_FILE list Subject: mm: reclaim MADV_FREE pages Subject: mm: fix lazyfree BUG_ON check in try_to_unmap_one() Subject: mm: enable MADV_FREE for swapless system Subject: proc: show MADV_FREE pages info in smaps Subject: mm: memcontrol: provide shmem statistics Subject: mm, swap: Fix a race in free_swap_and_cache() Subject: mm: use is_migrate_highatomic() to simplify the code Subject: mm: use is_migrate_isolate_page() to simplify the code Subject: mm, vmstat: print non-populated zones in zoneinfo Subject: mm, vmstat: suppress pcp stats for unpopulated zones in zoneinfo Subject: lockdep: teach lockdep about memalloc_noio_save Subject: lockdep: allow to disable reclaim lockup detection Subject: xfs: abstract PF_FSTRANS to PF_MEMALLOC_NOFS Subject: mm: introduce memalloc_nofs_{save,restore} API Subject: xfs: use memalloc_nofs_{save,restore} instead of memalloc_noio* Subject: jbd2: mark the transaction context with the scope GFP_NOFS context Subject: jbd2: make the whole kjournald2 kthread NOFS safe Subject: mm: tighten up the fault path a little Subject: mm: remove rodata_test_data export, add pr_fmt Subject: mm: do not use double negation for testing page flags Subject: mm, vmscan: fix zone balance check in prepare_kswapd_sleep Subject: mm, vmscan: only clear pgdat congested/dirty/writeback state when balanced Subject: mm, vmscan: prevent kswapd sleeping prematurely due to mismatched classzone_idx Subject: mm: page_alloc: __GFP_NOWARN shouldn't suppress stall warnings Subject: mm/sparse: refine usemap_size() a little Subject: mm/compaction: ignore block suitable after check large free page Subject: mm/vmscan: more restrictive condition for retry in do_try_to_free_pages Subject: mm: remove unncessary ret in page_referenced Subject: mm: remove SWAP_DIRTY in ttu Subject: mm: remove SWAP_MLOCK check for SWAP_SUCCESS in ttu Subject: mm: make try_to_munlock() return void Subject: mm: remove SWAP_MLOCK in ttu Subject: mm: remove SWAP_AGAIN in ttu Subject: mm: make ttu's return boolean Subject: mm: make rmap_walk() return void Subject: mm: make rmap_one boolean function Subject: mm: remove SWAP_[SUCCESS|AGAIN|FAIL] Subject: mm, swap: fix comment in __read_swap_cache_async Subject: mm, swap: improve readability via make spin_lock/unlock balanced Subject: mm, swap: avoid lock swap_avail_lock when held cluster lock Subject: mm: enable page poisoning early at boot Subject: include/linux/migrate.h: add arg names to prototype Subject: mm/swap_slots.c: add warning if swap slots cache failed to initialize Subject: mm: fix spelling error Subject: userfaultfd: selftest: combine all cases into a single executable Subject: oom: improve oom disable handling Subject: mm/mmap: replace SHM_HUGE_MASK with MAP_HUGE_MASK inside mmap_pgoff Subject: mm: vmscan: fix IO/refault regression in cache workingset transition Subject: mm: memcontrol: clean up memory.events counting function Subject: mm: memcontrol: re-use global VM event enum Subject: mm: memcontrol: re-use node VM page state enum Subject: mm: memcontrol: use node page state naming scheme for memcg Subject: mm, swap: remove unused function prototype Subject: Documentation: vm, add hugetlbfs reservation overview Subject: mm/madvise.c: clean up MADV_SOFT_OFFLINE and MADV_HWPOISON Subject: mm/madvise: move up the behavior parameter validation Subject: mm/memory-failure.c: add page flag description in error paths Subject: mm, page_alloc: remove debug_guardpage_minorder() test in warn_alloc() Subject: zram: handle multiple pages attached bio's bvec Subject: zram: partial IO refactoring Subject: zram: use zram_slot_lock instead of raw bit_spin_lock op Subject: zram: remove zram_meta structure Subject: zram: introduce zram data accessor Subject: zram: use zram_free_page instead of open-coded Subject: zram: reduce load operation in page_same_filled Subject: fs: fix data invalidation in the cleancache during direct IO Subject: fs/block_dev: always invalidate cleancache in invalidate_bdev() Subject: mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty Subject: mm/truncate: avoid pointless cleancache_invalidate_inode() calls. Subject: mm/gup.c: fix access_ok() argument type Subject: mm/swapfile.c: fix swap space leak in error path of swap_free_entries() Subject: mm: hwpoison: call shake_page() unconditionally Subject: mm: hwpoison: call shake_page() after try_to_unmap() for mlocked page Subject: kasan: introduce helper functions for determining bug type Subject: kasan: unify report headers Subject: kasan: change allocation and freeing stack traces headers Subject: kasan: simplify address description logic Subject: kasan: change report header Subject: kasan: improve slab object description Subject: kasan: print page description after stacks Subject: kasan: improve double-free report format Subject: kasan: separate report parts by empty lines ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-04-20 21:37 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-04-20 21:37 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 2 fixes, based on f61143c45077df4fa78e2f1ba455a00bbe1d5b8c: Subject: Revert "mm, page_alloc: only use per-cpu allocator for irq-safe requests" Subject: mm: prevent NR_ISOLATE_* stats from going negative ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-04-13 21:56 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-04-13 21:56 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 11 fixes, based on 2760078203a6b46b96307f4b06030ab0b801c97e: Subject: z3fold: fix page locking in z3fold_alloc() Subject: thp: reduce indentation level in change_huge_pmd() Subject: thp: fix MADV_DONTNEED vs. numa balancing race Subject: mm: drop unused pmdp_huge_get_and_clear_notify() Subject: thp: fix MADV_DONTNEED vs. MADV_FREE race Subject: thp: fix MADV_DONTNEED vs clear soft dirty race Subject: hugetlbfs: fix offset overflow in hugetlbfs mmap Subject: zram: fix operator precedence to get offset Subject: zram: do not use copy_page with non-page aligned address Subject: zsmalloc: expand class bit Subject: mailmap: add Martin Kepplinger's email The presence of "thp: reduce indentation level in change_huge_pmd()" is unfortunate. But the patchset had been decently reviewed and tested before we decided it was needed in -stable and I felt it best not to churn things at the last minute. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-04-07 23:04 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-04-07 23:04 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 10 fixes, based on 81d4bab4ce87228c37ab14a885438544af5c9ce6: Subject: mm: fix page_vma_mapped_walk() for ksm pages Subject: userfaultfd: report actual registered features in fdinfo Subject: mm/page_alloc.c: fix print order in show_free_areas() Subject: vmlinux.lds: add missing VMLINUX_SYMBOL macros Subject: ptrace: fix PTRACE_LISTEN race corrupting task->state Subject: mm, thp: fix setting of defer+madvise thp defrag mode Subject: dax: fix radix tree insertion race Subject: mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff() Subject: mailmap: update Yakir Yang email address Subject: mm: move pcp and lru-pcp draining into single wq ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-03-31 22:11 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-03-31 22:11 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 11 fixes, based on d4562267b995fa3917717cc7773dad9c1f1ca658: Subject: mm: migrate: fix remove_migration_pte() for ksm pages Subject: mm: move mm_percpu_wq initialization earlier Subject: mm: rmap: fix huge file mmap accounting in the memcg stats Subject: mm: workingset: fix premature shadow node shrinking with cgroups Subject: mm, hugetlb: use pte_present() instead of pmd_present() in follow_huge_pmd() Subject: mm: fix section name for .data..ro_after_init Subject: hugetlbfs: initialize shared policy as part of inode allocation Subject: kasan: report only the first error by default Subject: mm/hugetlb.c: don't call region_abort if region_chg fails Subject: drivers/rapidio/devices/tsi721.c: make module parameter variable name unique Subject: kasan: do not sanitize kexec purgatory ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-03-16 23:40 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-03-16 23:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 6 fixes, based on 69eea5a4ab9c705496e912b55a9d312325de19e6: Subject: z3fold: fix spinlock unlocking in page reclaim Subject: kasan: add a prototype of task_struct to avoid warning Subject: mm, x86: fix native_pud_clear build error Subject: mm: don't warn when vmalloc() fails due to a fatal signal Subject: mm: add private lock to serialize memory hotplug operations Subject: drivers core: remove assert_held_device_hotplug() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-03-10 0:15 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-03-10 0:15 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 26 fixes, based on ea6200e84182989a3cce9687cf79a23ac44ec4db: Subject: userfaultfd: shmem: __do_fault requires VM_FAULT_NOPAGE Subject: scripts/spelling.txt: add "disble(d)" pattern and fix typo instances Subject: scripts/spelling.txt: add "overide" pattern and fix typo instances Subject: powerpc/mm: handle protnone ptes on fork Subject: power/mm: update pte_write and pte_wrprotect to handle savedwrite Subject: x86, mm: fix gup_pte_range() vs DAX mappings Subject: x86, mm: unify exit paths in gup_pte_range() Subject: userfaultfd: non-cooperative: rollback userfaultfd_exit Subject: userfaultfd: non-cooperative: robustness check Subject: userfaultfd: non-cooperative: release all ctx in dup_userfaultfd_complete Subject: include/linux/fs.h: fix unsigned enum warning with gcc-4.2 Subject: mm/vmstats: add thp_split_pud event for clarity Subject: drivers/md/bcache/util.h: remove duplicate inclusion of blkdev.h Subject: mm/cgroup: avoid panic when init with low memory Subject: userfaultfd: non-cooperative: fix fork fctx->new memleak Subject: userfaultfd: non-cooperative: userfaultfd_remove revalidate vma in MADV_DONTNEED Subject: userfaultfd: selftest: vm: allow to build in vm/ directory Subject: mm/memblock.c: fix memblock_next_valid_pfn() Subject: rmap: fix NULL-pointer dereference on THP munlocking Subject: thp: fix another corner case of munlock() vs. THPs Subject: mm: do not call mem_cgroup_free() from within mem_cgroup_alloc() Subject: kasan: resched in quarantine_remove_cache() Subject: kasan: fix races in quarantine_remove_cache() Subject: sh: cayman: IDE support fix Subject: fat: fix using uninitialized fields of fat_inode/fsinfo_inode Subject: userfaultfd: remove wrong comment from userfaultfd_ctx_get() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-02-27 22:25 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-02-27 22:25 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few MM remainders - misc things - autofs updates - signals - affs updates - ipc - nilfs2 - spelling.txt updates 78 patches, based on e5d56efc97f8240d0b5d66c03949382b6d7e5570: Subject: mm,fs,dax: mark dax_iomap_pmd_fault as const Subject: zswap: allow initialization at boot without pool Subject: zswap: clear compressor or zpool param if invalid at init Subject: zswap: don't param_set_charp while holding spinlock Subject: kprobes: move kprobe declarations to asm-generic/kprobes.h Subject: autofs: remove wrong comment Subject: autofs: fix typo in Documentation Subject: autofs: fix wrong ioctl documentation regarding devid Subject: autofs: update ioctl documentation regarding struct autofs_dev_ioctl Subject: autofs: add command enum/macros for root-dir ioctls Subject: autofs: remove duplicated AUTOFS_DEV_IOCTL_SIZE definition Subject: autofs: take more care to not update last_used on path walk Subject: hfsplus: atomically read inode size Subject: fs/reiserfs: atomically read inode size Subject: sigaltstack: support SS_AUTODISARM for CONFIG_COMPAT Subject: tools/testing/selftests/sigaltstack/sas.c: improve output of sigaltstack testcase Subject: /proc/kcore: update physical address for kcore ram and text Subject: rapidio: use get_user_pages_unlocked() Subject: include/linux/pid.h: use for_each_thread() in do_each_pid_thread() Subject: fs,eventpoll: Don't test for bitfield with stack value Subject: fs/affs: remove reference to affs_parent_ino() Subject: fs/affs: add validation block function Subject: fs/affs: make affs exportable Subject: fs/affs: use octal for permissions Subject: fs/affs: add prefix to some functions Subject: fs/affs/namei.c: forward declarations clean-up Subject: fs/affs: make export work with cold dcache Subject: config: android-recommended: disable aio support Subject: config: android-base: enable hardened usercopy and kernel ASLR Subject: lib/fonts/Kconfig: keep non-Sparc fonts listed together Subject: initramfs: finish fput() before accessing any binary from initramfs Subject: ipc/sem.c: avoid using spin_unlock_wait() Subject: ipc/sem: add hysteresis Subject: ipc/mqueue: add missing sparse annotation Subject: ipc/shm: Fix shmat mmap nil-page protection Subject: scatterlist: reorder compound boolean expression Subject: scatterlist: do not disable IRQs in sg_copy_buffer Subject: fs: add i_blocksize() Subject: nilfs2: use nilfs_btree_node_size() Subject: nilfs2: use i_blocksize() Subject: scripts/spelling.txt: add "swith" pattern and fix typo instances Subject: scripts/spelling.txt: add "swithc" pattern and fix typo instances Subject: scripts/spelling.txt: add "an user" pattern and fix typo instances Subject: scripts/spelling.txt: add "an union" pattern and fix typo instances Subject: scripts/spelling.txt: add "an one" pattern and fix typo instances Subject: scripts/spelling.txt: add "partiton" pattern and fix typo instances Subject: scripts/spelling.txt: add "aligment" pattern and fix typo instances Subject: scripts/spelling.txt: add "algined" pattern and fix typo instances Subject: scripts/spelling.txt: add "efective" pattern and fix typo instances Subject: scripts/spelling.txt: add "varible" pattern and fix typo instances Subject: scripts/spelling.txt: add "embeded" pattern and fix typo instances Subject: scripts/spelling.txt: add "againt" pattern and fix typo instances Subject: scripts/spelling.txt: add "neded" pattern and fix typo instances Subject: scripts/spelling.txt: add "unneded" pattern and fix typo instances Subject: scripts/spelling.txt: add "intialization" pattern and fix typo instances Subject: scripts/spelling.txt: add "initialiazation" pattern and fix typo instances Subject: scripts/spelling.txt: add "comsume(r)" pattern and fix typo instances Subject: scripts/spelling.txt: add "overrided" pattern and fix typo instances Subject: scripts/spelling.txt: add "configuartion" pattern and fix typo instances Subject: scripts/spelling.txt: add "applys" pattern and fix typo instances Subject: scripts/spelling.txt: add "explictely" pattern and fix typo instances Subject: scripts/spelling.txt: add "omited" pattern and fix typo instances Subject: scripts/spelling.txt: add "disassocation" pattern and fix typo instances Subject: scripts/spelling.txt: add "deintialize(d)" pattern and fix typo instances Subject: scripts/spelling.txt: add "overwritting" pattern and fix typo instances Subject: scripts/spelling.txt: add "overwriten" pattern and fix typo instances Subject: scripts/spelling.txt: add "therfore" pattern and fix typo instances Subject: scripts/spelling.txt: add "followings" pattern and fix typo instances Subject: scripts/spelling.txt: add some typo-words Subject: lib/vsprintf.c: remove %Z support Subject: checkpatch: warn when formats use %Z and suggest %z Subject: mm: add new mmgrab() helper Subject: mm: add new mmget() helper Subject: mm: use mmget_not_zero() helper Subject: mm: clarify mm_struct.mm_{users,count} documentation Subject: hfs: atomically read inode size Subject: mm: add arch-independent testcases for RODATA Subject: mm, x86: fix HIGHMEM64 && PARAVIRT build config for native_pud_clear() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-02-24 22:55 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-02-24 22:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - almost all of the rest of MM - misc bits - KASAN updates - procfs - lib/ updates - checkpatch updates 124 patches, based on f1ef09fde17f9b77ca1435a5b53a28b203afb81c: Subject: cris: use generic current.h Subject: mm/ksm: improve deduplication of zero pages with colouring Subject: mm, oom: header nodemask is NULL when cpusets are disabled Subject: mm, devm_memremap_pages: hold device_hotplug lock over mem_hotplug_{begin, done} Subject: mm: validate device_hotplug is held for memory hotplug Subject: mm/memory_hotplug.c: unexport __remove_pages() Subject: memblock: let memblock_type_name know about physmem type Subject: memblock: also dump physmem list within __memblock_dump_all Subject: memblock: embed memblock type name within struct memblock_type Subject: userfaultfd: non-cooperative: rename *EVENT_MADVDONTNEED to *EVENT_REMOVE Subject: userfaultfd: non-cooperative: add madvise() event for MADV_REMOVE request Subject: userfaultfd: non-cooperative: selftest: enable REMOVE event test for shmem Subject: mm: vmscan: scan dirty pages even in laptop mode Subject: mm: vmscan: kick flushers when we encounter dirty pages on the LRU Subject: mm: vmscan: remove old flusher wakeup from direct reclaim path Subject: mm: vmscan: only write dirty pages that the scanner has seen twice Subject: mm: vmscan: move dirty pages out of the way until they're flushed Subject: mm, page_alloc: split buffered_rmqueue() Subject: mm, page_alloc: split alloc_pages_nodemask() Subject: mm, page_alloc: drain per-cpu pages from workqueue context Subject: mm, page_alloc: do not depend on cpu hotplug locks inside the allocator Subject: mm, page_alloc: only use per-cpu allocator for irq-safe requests Subject: mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf Subject: mm: fix comments for mmap_init() Subject: zram: remove waitqueue for IO done Subject: mm, page_alloc: remove redundant checks from alloc fastpath Subject: mm, page_alloc: don't check cpuset allowed twice in fast-path Subject: mm, page_alloc: use static global work_struct for draining per-cpu pages Subject: mm,fs,dax: change ->pmd_fault to ->huge_fault Subject: mm, x86: add support for PUD-sized transparent hugepages Subject: dax: support for transparent PUD pages for device DAX Subject: mm: replace FAULT_FLAG_SIZE with parameter to huge_fault Subject: mm: fix get_user_pages() vs device-dax pud mappings Subject: z3fold: make pages_nr atomic Subject: z3fold: fix header size related issues Subject: z3fold: extend compaction function Subject: z3fold: use per-page spinlock Subject: z3fold: add kref refcounting Subject: mm/migration: make isolate_movable_page() return int type Subject: mm/migration: make isolate_movable_page always defined Subject: HWPOISON: soft offlining for non-lru movable page Subject: mm/hotplug: enable memory hotplug for non-lru movable pages Subject: uprobes: split THPs before trying to replace them Subject: mm: introduce page_vma_mapped_walk() Subject: mm: fix handling PTE-mapped THPs in page_referenced() Subject: mm: fix handling PTE-mapped THPs in page_idle_clear_pte_refs() Subject: mm, rmap: check all VMAs that PTE-mapped THP can be part of Subject: mm: convert page_mkclean_one() to use page_vma_mapped_walk() Subject: mm: convert try_to_unmap_one() to use page_vma_mapped_walk() Subject: mm, ksm: convert write_protect_page() to use page_vma_mapped_walk() Subject: mm, uprobes: convert __replace_page() to use page_vma_mapped_walk() Subject: mm: convert page_mapped_in_vma() to use page_vma_mapped_walk() Subject: mm: drop page_check_address{,_transhuge} Subject: mm: convert remove_migration_pte() to use page_vma_mapped_walk() Subject: mm: call vm_munmap in munmap syscall instead of using open coded version Subject: userfaultfd: non-cooperative: add event for memory unmaps Subject: userfaultfd: non-cooperative: add event for exit() notification Subject: userfaultfd: mcopy_atomic: return -ENOENT when no compatible VMA found Subject: userfaultfd_copy: return -ENOSPC in case mm has gone Subject: userfaultfd: documentation update Subject: mm: alloc_contig_range: allow to specify GFP mask Subject: mm: cma_alloc: allow to specify GFP mask Subject: mm: wire up GFP flag passing in dma_alloc_from_contiguous Subject: mm, madvise: fail with ENOMEM when splitting vma will hit max_map_count Subject: mm: cma: print allocation failure reason and bitmap status Subject: vmalloc: back off when the current task is killed Subject: mm/page_alloc.c: remove duplicate inclusion of page_ext.h Subject: mm/memory.c: use NULL instead of literal 0 Subject: mm: codgin-style fixes Subject: drm: remove unnecessary fault wrappers Subject: mm, vmscan: clear PGDAT_WRITEBACK when zone is balanced Subject: mm/shmem.c: fix unlikely() test of info->seals to test only for WRITE and GROW Subject: mm/autonuma: don't use set_pte_at when updating protnone ptes Subject: mm/autonuma: let architecture override how the write bit should be stashed in a protnone pte. Subject: mm/ksm: handle protnone saved writes when making page write protect Subject: powerpc/mm/autonuma: switch ppc64 to its own implementation of saved write Subject: mm/page-writeback.c: place "not" inside of unlikely() statement in wb_domain_writeout_inc() Subject: zram: extend zero pages to same element pages Subject: mm/memory_hotplug.c: fix overflow in test_pages_in_a_zone() Subject: mm/page_alloc: fix nodes for reclaim in fast path Subject: mm: remove shmem_mapping() shmem_zero_setup() duplicates Subject: mm: vmpressure: fix sending wrong events on underflow Subject: mm/zsmalloc: remove redundant SetPagePrivate2 in create_page_chain Subject: mm/page_alloc.c: remove redundant init code for ZONE_MOVABLE Subject: mm/zsmalloc: fix comment in zsmalloc Subject: mm: cleanups for printing phys_addr_t and dma_addr_t Subject: mm/gup: check for protnone only if it is a PTE entry Subject: mm/thp/autonuma: use TNF flag instead of vm fault Subject: mm: do not access page->mapping directly on page_endio Subject: memory-hotplug: use dev_online for memhp_auto_online Subject: kasan: drain quarantine of memcg slab objects Subject: kasan: add memcg kmem_cache test Subject: arch/frv/mb93090-mb00/pci-frv.c: fix build warning Subject: alpha: use generic current.h Subject: proc: use rb_entry() Subject: proc: less code duplication in /proc/*/cmdline Subject: procfs: use an enum for possible hidepid values Subject: uapi: mqueue.h: add missing linux/types.h include Subject: include/linux/iopoll.h: include <linux/ktime.h> instead of <linux/hrtimer.h> Subject: compiler-gcc.h: add a new macro to wrap gcc attribute Subject: m68k: replace gcc specific macros with ones from compiler.h Subject: bug: switch data corruption check to __must_check Subject: mm balloon: umount balloon_mnt when removing vb device Subject: kernel/notifier.c: simplify expression Subject: kernel/ksysfs.c: add __ro_after_init to bin_attribute structure Subject: lib: add module support to crc32 tests Subject: lib: add module support to glob tests Subject: lib: add module support to atomic64 tests Subject: lib/find_bit.c: micro-optimise find_next_*_bit Subject: linux/kernel.h: fix DIV_ROUND_CLOSEST to support negative divisors Subject: rbtree: use designated initializers Subject: lib: add CONFIG_TEST_SORT to enable self-test of sort() Subject: lib/test_sort.c: make it explicitly non-modular Subject: lib: update LZ4 compressor module Subject: lib/decompress_unlz4: change module to work with new LZ4 module version Subject: crypto: change LZ4 modules to work with new LZ4 module version Subject: fs/pstore: fs/squashfs: change usage of LZ4 to work with new LZ4 version Subject: lib/lz4: remove back-compat wrappers Subject: checkpatch: warn on embedded function names Subject: checkpatch: warn on logging continuations Subject: checkpatch: update $logFunctions Subject: checkpatch: add another old address for the FSF Subject: checkpatch: notice unbalanced else braces in a patch Subject: checkpatch: remove false unbalanced braces warning ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-02-22 23:38 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-02-22 23:38 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 142 patches, based on 37c85961c3f87f2141c84e53df31e59db072fd2e: - DAX updates - various misc bits - OCFS2 updates - most of MM Subject: tracing: add __print_flags_u64() Subject: dax: add tracepoint infrastructure, PMD tracing Subject: dax: update MAINTAINERS entries for FS DAX Subject: dax: add tracepoints to dax_pmd_load_hole() Subject: dax: add tracepoints to dax_pmd_insert_mapping() Subject: mm, dax: make pmd_fault() and friends be the same as fault() Subject: mm, dax: change pmd_fault() to take only vmf parameter Subject: dma-debug: add comment for failed to check map error Subject: tools/vm: add missing Makefile rules Subject: scripts/spelling.txt: add several more common spelling mistakes Subject: scripts/spelling.txt: fix incorrect typo-words Subject: scripts/Lindent: clean up and optimize Subject: scripts/checkstack.pl: add support for nios2 Subject: scripts/checkincludes.pl: add exit message for no duplicates found Subject: scripts/tags.sh: include arch/Kconfig* for tags generation Subject: m32r: use generic current.h Subject: m32r: fix build warning Subject: score: remove asm/current.h Subject: ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock Subject: ocfs2: fix deadlock issue when taking inode lock at vfs entry points Subject: parisc: use generic current.h Subject: block: use for_each_thread() in sys_ioprio_set()/sys_ioprio_get() Subject: 9p: fix a potential acl leak Subject: kernel/watchdog.c: do not hardcode CPU 0 as the initial thread Subject: slub: do not merge cache if slub_debug contains a never-merge flag Subject: mm/slub: add a dump_stack() to the unexpected GFP check Subject: mm, slab: rename kmalloc-node cache to kmalloc-<size> Subject: Revert "slub: move synchronize_sched out of slab_mutex on shrink" Subject: slub: separate out sysfs_slab_release() from sysfs_slab_remove() Subject: slab: remove synchronous rcu_barrier() call in memcg cache release path Subject: slab: reorganize memcg_cache_params Subject: slab: link memcg kmem_caches on their associated memory cgroup Subject: slab: implement slab_root_caches list Subject: slab: introduce __kmemcg_cache_deactivate() Subject: slab: remove synchronous synchronize_sched() from memcg cache deactivation path Subject: slab: remove slub sysfs interface files early for empty memcg caches Subject: slab: use memcg_kmem_cache_wq for slab destruction operations Subject: slub: make sysfs directories for memcg sub-caches optional Subject: tmpfs: change shmem_mapping() to test shmem_aops Subject: mm: throttle show_mem() from warn_alloc() Subject: mm, page_alloc: don't convert pfn to idx when merging Subject: mm, page_alloc: avoid page_to_pfn() when merging buddies Subject: mm/vmalloc.c: use rb_entry_safe Subject: mm, trace: extract COMPACTION_STATUS and ZONE_TYPE to a common header Subject: oom, trace: add oom detection tracepoints Subject: oom, trace: add compaction retry tracepoint Subject: userfaultfd: document _IOR/_IOW Subject: userfaultfd: correct comment about UFFD_FEATURE_PAGEFAULT_FLAG_WP Subject: userfaultfd: convert BUG() to WARN_ON_ONCE() Subject: userfaultfd: use vma_is_anonymous Subject: userfaultfd: non-cooperative: Split the find_userfault() routine Subject: userfaultfd: non-cooperative: add ability to report non-PF events from uffd descriptor Subject: userfaultfd: non-cooperative: report all available features to userland Subject: userfaultfd: non-cooperative: Add fork() event Subject: userfaultfd: non-cooperative: dup_userfaultfd: use mm_count instead of mm_users Subject: userfaultfd: non-cooperative: add mremap() event Subject: userfaultfd: non-cooperative: optimize mremap_userfaultfd_complete() Subject: userfaultfd: non-cooperative: add madvise() event for MADV_DONTNEED request Subject: userfaultfd: non-cooperative: avoid MADV_DONTNEED race condition Subject: userfaultfd: non-cooperative: wake userfaults after UFFDIO_UNREGISTER Subject: userfaultfd: hugetlbfs: add copy_huge_page_from_user for hugetlb userfaultfd support Subject: userfaultfd: hugetlbfs: add hugetlb_mcopy_atomic_pte for userfaultfd support Subject: userfaultfd: hugetlbfs: add __mcopy_atomic_hugetlb for huge page UFFDIO_COPY Subject: userfaultfd: hugetlbfs: fix __mcopy_atomic_hugetlb retry/error processing Subject: userfaultfd: hugetlbfs: add userfaultfd hugetlb hook Subject: userfaultfd: hugetlbfs: allow registration of ranges containing huge pages Subject: userfaultfd: hugetlbfs: add userfaultfd_hugetlb test Subject: userfaultfd: hugetlbfs: userfaultfd_huge_must_wait for hugepmd ranges Subject: userfaultfd: hugetlbfs: gup: support VM_FAULT_RETRY Subject: userfaultfd: hugetlbfs: reserve count on error in __mcopy_atomic_hugetlb Subject: userfaultfd: hugetlbfs: UFFD_FEATURE_MISSING_HUGETLBFS Subject: userfaultfd: introduce vma_can_userfault Subject: userfaultfd: shmem: add shmem_mcopy_atomic_pte for userfaultfd support Subject: userfaultfd: shmem: introduce vma_is_shmem Subject: userfaultfd: shmem: add tlbflush.h header for microblaze Subject: userfaultfd: shmem: use shmem_mcopy_atomic_pte for shared memory Subject: userfaultfd: shmem: add userfaultfd hook for shared memory faults Subject: userfaultfd: shmem: allow registration of shared memory ranges Subject: userfaultfd: hugetlbfs: add UFFDIO_COPY support for shared mappings Subject: userfaultfd: shmem: add userfaultfd_shmem test Subject: userfaultfd: shmem: lock the page before adding it to pagecache Subject: userfaultfd: shmem: avoid a lockup resulting from corrupted page->flags Subject: userfaultfd: shmem: avoid leaking blocks and used blocks in UFFDIO_COPY Subject: userfaultfd: hugetlbfs: UFFD_FEATURE_MISSING_SHMEM Subject: userfaultfd: non-cooperative: selftest: introduce userfaultfd_open Subject: userfaultfd: non-cooperative: selftest: add ufd parameter to copy_page Subject: userfaultfd: non-cooperative: selftest: add test for FORK, MADVDONTNEED and REMAP events Subject: userfaultfd: selftest: test UFFDIO_ZEROPAGE on all memory types Subject: mm: mprotect: use pmd_trans_unstable instead of taking the pmd_lock Subject: mm, vmscan: remove unused mm_vmscan_memcg_isolate Subject: mm, vmscan: add active list aging tracepoint Subject: mm, vmscan: show the number of skipped pages in mm_vmscan_lru_isolate Subject: mm, vmscan: show LRU name in mm_vmscan_lru_isolate tracepoint Subject: mm, vmscan: extract shrink_page_list reclaim counters into a struct Subject: mm, vmscan: enhance mm_vmscan_lru_shrink_inactive tracepoint Subject: mm, vmscan: add mm_vmscan_inactive_list_is_low tracepoint Subject: trace-vmscan-postprocess: sync with tracepoints updates Subject: nfs: no PG_private waiters remain, remove waker Subject: mm: un-export wake_up_page functions Subject: mm: fix filemap.c kernel-doc warnings Subject: mm/mmzone.c: swap likely to unlikely as code logic is different for next_zones_zonelist() Subject: mm, compaction: add vmstats for kcompactd work Subject: mm: page_alloc: skip over regions of invalid pfns where possible Subject: mm,compaction: serialize waitqueue_active() checks Subject: mm/bootmem.c: cosmetic improvement of code readability Subject: mm: fix some typos in mm/zsmalloc.c Subject: mm/memblock.c: trivial code refine in memblock_is_region_memory() Subject: mm/memblock.c: check return value of memblock_reserve() in memblock_virt_alloc_internal() Subject: mm/sparse: use page_private() to get page->private value Subject: mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next Subject: powerpc: do not make the entire heap executable Subject: mm/swap: fix kernel message in swap_info_get() Subject: mm/swap: add cluster lock Subject: mm/swap: split swap cache into 64MB trunks Subject: mm/swap: skip readahead for unreferenced swap slots Subject: mm/swap: allocate swap slots in batches Subject: mm/swap: free swap slots in batch Subject: mm/swap: add cache for swap slots allocation Subject: mm/swap: enable swap slots cache usage Subject: mm/swap: skip readahead only when swap slot cache is enabled Subject: mm, thp: add new defer+madvise defrag option Subject: mm/backing-dev.c: use rb_entry() Subject: mm, vmscan: do not count freed pages as PGDEACTIVATE Subject: mm, vmscan: cleanup lru size claculations Subject: mm, vmscan: consider eligible zones in get_scan_count Subject: Revert "mm: bail out in shrink_inactive_list()" Subject: mm, page_alloc: do not report all nodes in show_mem Subject: mm, page_alloc: warn_alloc print nodemask Subject: arch, mm: remove arch specific show_mem Subject: lib/show_mem.c: teach show_mem to work with the given nodemask Subject: mm: consolidate GFP_NOFAIL checks in the allocator slowpath Subject: mm, oom: do not enforce OOM killer for __GFP_NOFAIL automatically Subject: mm: help __GFP_NOFAIL allocations which do not trigger OOM killer Subject: mm, page_alloc: warn_alloc nodemask is NULL when cpusets are disabled Subject: mm: drop zap_details::ignore_dirty Subject: mm: drop zap_details::check_swap_entries Subject: mm: drop unused argument of zap_page_range() Subject: oom-reaper: use madvise_dontneed() logic to decide if unmap the VMA Subject: mm/memblock.c: remove unnecessary log and clean up Subject: zram: remove obsolete sysfs attrs Subject: mm: fix <linux/pagemap.h> stray kernel-doc notation Subject: mm/z3fold.c: limit first_num to the actual range of possible buddy indexes ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-02-18 11:42 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-02-18 11:42 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 1 fix, based on 2fe1e8a7b2f4dcac3fcb07ff06b0ae7396201fd6: Subject: printk: use rcuidle console tracepoint ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-02-08 22:30 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-02-08 22:30 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 4 fixes, based on 926af6273fc683cd98cd0ce7bf0d04a02eed6742: Subject: kernel/ucount.c: mark user_header with kmemleak_ignore() Subject: mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers Subject: cpumask: use nr_cpumask_bits for parsing functions Subject: mm/slub.c: fix random_seq offset destruction ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-01-24 23:17 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-01-24 23:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 26 fixes, based on a4685d2f58e2230d4e27fb2ee581d7ea35e5d046: Subject: memory_hotplug: make zone_can_shift() return a boolean value Subject: mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp Subject: dax: fix build warnings with FS_DAX and !FS_IOMAP Subject: kernel/watchdog: prevent false hardlockup on overloaded system Subject: drivers/memstick/core/memstick.c: avoid -Wnonnull warning Subject: userfaultfd: fix SIGBUS resulting from false rwsem wakeups Subject: mm/slub.c: trace free objects at KERN_INFO Subject: mm: alloc_contig: re-allow CMA to compact FS pages Subject: proc: add a schedule point in proc_pid_readdir() Subject: mm, memcg: do not retry precharge charges Subject: Documentation/filesystems/proc.txt: add VmPin Subject: radix-tree: fix private list warnings Subject: mm/mempolicy.c: do not put mempolicy before using its nodemask Subject: frv: add atomic64_add_unless() Subject: fbdev: color map copying bounds checking Subject: kernel/panic.c: add missing \n Subject: mm, page_alloc: fix check for NULL preferred_zone Subject: mm, page_alloc: fix fast-path race with cpuset update or removal Subject: mm, page_alloc: move cpuset seqcount checking to slowpath Subject: mm, page_alloc: fix premature OOM when racing with cpuset mems update Subject: frv: add missing atomic64 operations Subject: romfs: use different way to generate fsid for BLOCK or MTD Subject: mn10300: fix build error of missing fpu_save() Subject: mm: do not export ioremap_page_range symbol for external module Subject: MAINTAINERS: add Dan Streetman to zswap maintainers Subject: MAINTAINERS: add Dan Streetman to zbud maintainers ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2017-01-11 0:57 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2017-01-11 0:57 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 27 fixes, based on bd5d7428f5e50cc10b98cf0abc13ccac391e1e33: The three patches Subject: mm: rename __alloc_page_frag to page_frag_alloc and __free_page_frag to page_frag_free Subject: mm: rename __page_frag functions to __page_frag_cache, drop order from drain Subject: mm: add documentation for page fragment APIs aren't actually fixes. They're simple function renamings which are nice-to-have in mainline as ongoing net development depends on them. Subject: MAINTAINERS: remove duplicate bug filling description Subject: dax: fix deadlock with DAX 4k holes Subject: mm/thp/pagecache/collapse: free the pte page table on collapse for thp page cache. Subject: mm: add follow_pte_pmd() Subject: dax: wrprotect pmd_t in dax_mapping_entry_mkclean Subject: mm, slab: make sure that KMALLOC_MAX_SIZE will fit into MAX_ORDER Subject: bpf: do not use KMALLOC_SHIFT_MAX Subject: ocfs2: fix crash caused by stale lvb with fsdlm plugin Subject: mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done} Subject: mm: fix remote numa hits statistics Subject: mm: get rid of __GFP_OTHER_NODE Subject: lib/Kconfig.debug: fix frv build failure Subject: ipc/sem.c: fix incorrect sem_lock pairing Subject: mm: pmd dirty emulation in page fault handler Subject: signal: protect SIGNAL_UNKILLABLE from unintentional clearing. Subject: mailmap: add codeaurora.org names for nameless email commits Subject: mm: don't dereference struct page fields of invalid pages Subject: mm, memcg: fix the active list aging for lowmem requests when memcg is enabled Subject: mm: rename __alloc_page_frag to page_frag_alloc and __free_page_frag to page_frag_free Subject: mm: rename __page_frag functions to __page_frag_cache, drop order from drain Subject: mm: add documentation for page fragment APIs Subject: mm: support anonymous stable page Subject: zram: revalidate disk under init_lock Subject: zram: support BDI_CAP_STABLE_WRITES Subject: mm/slab.c: fix SLAB freelist randomization duplicate entries Subject: mm/hugetlb.c: fix reservation race when freeing surplus pages Subject: timerfd: export defines to userspace ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-12-20 0:22 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-12-20 0:22 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a series to make IMA play better across kexec - a handful of random fixes 15 patches, based on e93b1cc8a8965da137ffea0b88e5f62fa1d2a9e6: Subject: powerpc: ima: get the kexec buffer passed by the previous kernel Subject: ima: on soft reboot, restore the measurement list Subject: ima: permit duplicate measurement list entries Subject: ima: maintain memory size needed for serializing the measurement list Subject: powerpc: ima: send the kexec buffer to the next kernel Subject: ima: on soft reboot, save the measurement list Subject: ima: store the builtin/custom template definitions in a list Subject: ima: support restoring multiple template formats Subject: ima: define a canonical binary_runtime_measurements list format Subject: ima: platform-independent hash value Subject: mm: fadvise: avoid expensive remote LRU cache draining after FADV_DONTNEED Subject: arm64: setup: introduce kaslr_offset() Subject: kcov: make kcov work properly with KASLR enabled Subject: ratelimit: fix WARN_ON_RATELIMIT return value Subject: printk: fix typo in CONSOLE_LOGLEVEL_DEFAULT help text ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-12-14 23:04 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-12-14 23:04 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few misc things - kexec updates - DMA-mapping updates to better support networking DMA operations - IPC updates - various MM changes to improve DAX fault handling - lots of radix-tree changes, mainly to the test suite. All leading up to reimplementing the IDA/IDR code to be a wrapper layer over the radix-tree. However the final trigger-pulling patch is held off for 4.11. 114 patches, based on 775a2e29c3bbcf853432f47d3caa9ff8808807ad: Subject: btrfs: better handle btrfs_printk() defaults Subject: kernel/watchdog: use nmi registers snapshot in hardlockup handler Subject: mm, compaction: allow compaction for GFP_NOFS requests Subject: signals: avoid unnecessary taking of sighand->siglock Subject: coredump: clarify "unsafe core_pattern" warning Subject: Revert "kdump, vmcoreinfo: report memory sections virtual addresses" Subject: kexec: export the value of phys_base instead of symbol address Subject: kexec: add cond_resched into kimage_alloc_crash_control_pages Subject: sysctl: add KERN_CONT to deprecated_sysctl_warning() Subject: arch/arc: add option to skip sync on DMA mapping Subject: arch/arm: add option to skip sync on DMA map and unmap Subject: arch/avr32: add option to skip sync on DMA map Subject: arch/blackfin: add option to skip sync on DMA map Subject: arch/c6x: add option to skip sync on DMA map and unmap Subject: arch/frv: add option to skip sync on DMA map Subject: arch/hexagon: Add option to skip DMA sync as a part of mapping Subject: arch/m68k: add option to skip DMA sync as a part of mapping Subject: arch/metag: add option to skip DMA sync as a part of map and unmap Subject: arch/microblaze: add option to skip DMA sync as a part of map and unmap Subject: arch/mips: add option to skip DMA sync as a part of map and unmap Subject: arch/nios2: add option to skip DMA sync as a part of map and unmap Subject: arch/openrisc: add option to skip DMA sync as a part of mapping Subject: arch/parisc: add option to skip DMA sync as a part of map and unmap Subject: arch/powerpc: add option to skip DMA sync as a part of mapping Subject: arch/sh: add option to skip DMA sync as a part of mapping Subject: arch/sparc: add option to skip DMA sync as a part of map and unmap Subject: arch/tile: add option to skip DMA sync as a part of map and unmap Subject: arch/xtensa: add option to skip DMA sync as a part of mapping Subject: dma: add calls for dma_map_page_attrs and dma_unmap_page_attrs Subject: mm: add support for releasing multiple instances of a page Subject: igb: update driver to make use of DMA_ATTR_SKIP_CPU_SYNC Subject: igb: update code to better handle incrementing page count Subject: relay: check array offset before using it Subject: Kconfig: lib/Kconfig.debug: fix references to Documenation Subject: Kconfig: lib/Kconfig.ubsan fix reference to ubsan documentation Subject: kcov: add more missing includes Subject: kernel/debug/debug_core.c: more properly delay for secondary CPUs Subject: kdb: remove unused kdb_event handling Subject: kdb: properly synchronize vkdb_printf() calls with other CPUs Subject: kdb: call vkdb_printf() from vprintk_default() only when wanted Subject: initramfs: select builtin initram compression algorithm on KConfig instead of Makefile Subject: initramfs: allow again choice of the embedded initram compression algorithm Subject: ipc: msg, make msgrcv work with LONG_MIN Subject: ipc/shm.c: coding style fixes Subject: posix-timers: give lazy compilers some help optimizing code away Subject: drivers/net/wireless/intel/iwlwifi/dvm/calib.c: simplfy min() expression Subject: ktest.pl: fix english Subject: kernel/watchdog.c: move shared definitions to nmi.h Subject: kernel/watchdog.c: move hardlockup detector to separate file Subject: sparc: implement watchdog_nmi_enable and watchdog_nmi_disable Subject: ipc/sem: do not call wake_sem_queue_do() prematurely Subject: ipc/sem: rework task wakeups Subject: ipc/sem: optimize perform_atomic_semop() Subject: ipc/sem: explicitly inline check_restart Subject: ipc/sem: use proper list api for pending_list wakeups Subject: ipc/sem: simplify wait-wake loop Subject: ipc/sem: avoid idr tree lookup for interrupted semop Subject: mm: add locked parameter to get_user_pages_remote() Subject: mm: unexport __get_user_pages_unlocked() Subject: mm: join struct fault_env and vm_fault Subject: mm: use vmf->address instead of of vmf->virtual_address Subject: mm: use pgoff in struct vm_fault instead of passing it separately Subject: mm: use passed vm_fault structure in __do_fault() Subject: mm: trim __do_fault() arguments Subject: mm: use passed vm_fault structure for in wp_pfn_shared() Subject: mm: add orig_pte field into vm_fault Subject: mm: allow full handling of COW faults in ->fault handlers Subject: mm: factor out functionality to finish page faults Subject: mm: move handling of COW faults into DAX code Subject: mm: factor out common parts of write fault handling Subject: mm: pass vm_fault structure into do_page_mkwrite() Subject: mm: use vmf->page during WP faults Subject: mm: move part of wp_page_reuse() into the single call site Subject: mm: provide helper for finishing mkwrite faults Subject: mm: change return values of finish_mkwrite_fault() Subject: mm: export follow_pte() Subject: dax: make cache flushing protected by entry lock Subject: dax: protect PTE modification on WP fault by radix tree entry lock Subject: dax: clear dirty entry tags on cache flush Subject: tools: add WARN_ON_ONCE Subject: radix tree test suite: allow GFP_ATOMIC allocations to fail Subject: radix tree test suite: track preempt_count Subject: radix tree test suite: free preallocated nodes Subject: radix tree test suite: make runs more reproducible Subject: radix tree test suite: iteration test misuses RCU Subject: radix tree test suite: benchmark for iterator Subject: radix tree test suite: use rcu_barrier Subject: radix tree test suite: handle exceptional entries Subject: radix tree test suite: record order in each item Subject: tools: add more bitmap functions Subject: radix tree test suite: use common find-bit code Subject: radix-tree: fix typo Subject: radix-tree: move rcu_head into a union with private_list Subject: radix-tree: create node_tag_set() Subject: radix-tree: make radix_tree_find_next_bit more useful Subject: radix-tree: improve dump output Subject: btrfs: fix race in btrfs_free_dummy_fs_info() Subject: radix-tree: improve multiorder iterators Subject: radix-tree: delete radix_tree_locate_item() Subject: radix-tree: delete radix_tree_range_tag_if_tagged() Subject: radix-tree: add radix_tree_join Subject: radix-tree: add radix_tree_split Subject: radix-tree: add radix_tree_split_preload() Subject: radix-tree: fix replacement for multiorder entries Subject: radix tree test suite: check multiorder iteration Subject: idr: add ida_is_empty Subject: tpm: use idr_find(), not idr_find_slowpath() Subject: rxrpc: abstract away knowledge of IDR internals Subject: idr: reduce the number of bits per level from 8 to 6 Subject: radix tree test suite: add some more functionality Subject: radix tree test suite: cache recently freed objects Subject: radix-tree: ensure counts are initialised Subject: radix tree test suite: add new tag check Subject: radix tree test suite: delete unused rcupdate.c ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-12-13 0:40 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-12-13 0:40 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - various misc bits - most of MM (quite a lot of MM material is awaiting the merge of linux-next dependencies) - kasan - printk updates - procfs updates - MAINTAINERS - /lib updates - checkpatch updates 123 patches, based on df5f0f0a028c9bf43949398a175dbaafaf513e14: Subject: kthread: add __printf attributes Subject: prctl: remove one-shot limitation for changing exe link Subject: scripts/bloat-o-meter: don't use readlines() Subject: scripts/bloat-o-meter: compile .NUMBER regex Subject: scripts/tags.sh: handle OMAP platforms properly Subject: m32r: add simple dma Subject: m32r: fix build warning Subject: drivers/pcmcia/m32r_pcc.c: check return from request_irq Subject: drivers/pcmcia/m32r_pcc.c: use common error path Subject: drivers/pcmcia/m32r_pcc.c: check return from add_pcc_socket Subject: ocfs2/dlm: clean up useless BUG_ON default case in dlm_finalize_reco_handler() Subject: ocfs2: delete redundant code and set the node bit into maybe_map directly Subject: ocfs2/dlm: clean up deadcode in dlm_master_request_handler() Subject: ocfs2: clean up unused 'page' parameter in ocfs2_write_end_nolock() Subject: ocfs2: fix double put of recount tree in ocfs2_lock_refcount_tree() Subject: ocfs2: use time64_t to represent orphan scan times Subject: ocfs2: replace CURRENT_TIME macro Subject: mm: memcontrol: use special workqueue for creating per-memcg caches Subject: slub: move synchronize_sched out of slab_mutex on shrink Subject: slub: avoid false-postive warning Subject: mm/slab_common.c: check kmem_create_cache flags are common Subject: mm, slab: faster active and free stats Subject: mm, slab: maintain total slab count instead of active count Subject: mm/mprotect.c: don't touch single threaded PTEs which are on the right node Subject: mm/vmscan.c: set correct defer count for shrinker Subject: mm/gup.c: make unnecessarily global vma_permits_fault() static Subject: mm/hugetlb.c: use the right pte val for compare in hugetlb_cow Subject: mm/hugetlb.c: use huge_pte_lock instead of opencoding the lock Subject: kmemleak: fix reference to Documentation Subject: mm: don't steal highatomic pageblock Subject: mm: prevent double decrease of nr_reserved_highatomic Subject: mm: try to exhaust highatomic reserve before the OOM Subject: mm: make unreserve highatomic functions reliable Subject: mm/vmalloc.c: simplify /proc/vmallocinfo implementation Subject: mm, thp: avoid unlikely branches for split_huge_pmd Subject: mm, mempolicy: clean up __GFP_THISNODE confusion in policy_zonelist Subject: mm, compaction: fix NR_ISOLATED_* stats for pfn based migration Subject: shmem: avoid maybe-uninitialized warning Subject: mm: use the correct page size when removing the page Subject: mm: update mmu_gather range correctly Subject: mm/hugetlb: add tlb_remove_hugetlb_entry for handling hugetlb pages Subject: mm: add tlb_remove_check_page_size_change to track page size change Subject: mm: remove the page size change check in tlb_remove_page Subject: mm: fix up get_user_pages* comments Subject: mm/mempolicy.c: forbid static or relative flags for local NUMA mode Subject: powerpc/mm: allow memory hotplug into a memoryless node Subject: mm: remove x86-only restriction of movable_node Subject: mm: enable CONFIG_MOVABLE_NODE on non-x86 arches Subject: of/fdt: mark hotpluggable memory Subject: dt: add documentation of "hotpluggable" memory property Subject: mm/pkeys: generate pkey system call code only if ARCH_HAS_PKEYS is selected Subject: mm: disable numa migration faults for dax vmas Subject: mm: cma: make linux/cma.h standalone includible Subject: mm/filemap.c: add comment for confusing logic in page_cache_tree_insert() Subject: fs/fs-writeback.c: remove redundant if check Subject: shmem: fix compilation warnings on unused functions Subject: mm: don't cap request size based on read-ahead setting Subject: include/linux/backing-dev-defs.h: shrink struct backing_dev_info Subject: mm: khugepaged: close use-after-free race during shmem collapsing Subject: mm: khugepaged: fix radix tree node leak in shmem collapse error path Subject: mm: workingset: turn shadow node shrinker bugs into warnings Subject: lib: radix-tree: native accounting of exceptional entries Subject: lib: radix-tree: check accounting of existing slot replacement users Subject: lib: radix-tree: add entry deletion support to __radix_tree_replace() Subject: lib: radix-tree: update callback for changing leaf nodes Subject: mm: workingset: move shadow entry tracking to radix tree exceptional tracking Subject: mm: workingset: restore refault tracking for single-page files Subject: mm: workingset: update shadow limit to reflect bigger active list Subject: mm: remove free_unmap_vmap_area_noflush() Subject: mm: remove free_unmap_vmap_area_addr() Subject: mm: refactor __purge_vmap_area_lazy() Subject: mm: add vfree_atomic() Subject: kernel/fork: use vfree_atomic() to free thread stack Subject: x86/ldt: use vfree_atomic() to free ldt entries Subject: mm: mark all calls into the vmalloc subsystem as potentially sleeping Subject: mm: turn vmap_purge_lock into a mutex Subject: mm: add preempt points into __purge_vmap_area_lazy() Subject: mm: move vma_is_anonymous check within pmd_move_must_withdraw Subject: mm: THP page cache support for ppc64 Subject: mm, debug: print raw struct page data in __dump_page() Subject: mm, rmap: handle anon_vma_prepare() common case inline Subject: mm, page_alloc: keep pcp count and list contents in sync if struct page is corrupted Subject: mm: add three more cond_resched() in swapoff Subject: mm: add cond_resched() in gather_pte_stats() Subject: mm: make transparent hugepage size public Subject: kasan: support panic_on_warn Subject: kasan: eliminate long stalls during quarantine reduction Subject: kasan: turn on -fsanitize-address-use-after-scope Subject: mm/percpu.c: fix panic triggered by BUG_ON() falsely Subject: proc: report no_new_privs state Subject: proc: make struct pid_entry::len unsigned Subject: proc: make struct struct map_files_info::len unsigned int Subject: proc: just list_del() struct pde_opener Subject: proc: fix type of struct pde_opener::closing field Subject: proc: kmalloc struct pde_opener Subject: proc: tweak comments about 2 stage open and everything Subject: fs/proc/array.c: slightly improve render_sigset_t Subject: fs/proc/base.c: save decrement during lookup/readdir in /proc/$PID Subject: fs/proc: calculate /proc/* and /proc/*/task/* nlink at init time Subject: hung_task: decrement sysctl_hung_task_warnings only if it is positive Subject: compiler-gcc.h: use "proved" instead of "proofed" Subject: printk/NMI: fix up handling of the full nmi log buffer Subject: printk/NMI: handle continuous lines and missing newline Subject: printk/kdb: handle more message headers Subject: printk/btrfs: handle more message headers Subject: printk/sound: handle more message headers Subject: printk: add Kconfig option to set default console loglevel Subject: get_maintainer: look for arbitrary letter prefixes in sections Subject: MAINTAINERS: add "B:" for URI where to file bugs Subject: MAINTAINERS: add drm and drm/i915 bug filing info Subject: MAINTAINERS: add "C:" for URI for chat where developers hang out Subject: MAINTAINERS: add drm and drm/i915 irc channels Subject: lib/Kconfig.debug: make CONFIG_STRICT_DEVMEM depend on CONFIG_DEVMEM Subject: lib/rbtree.c: fix typo in comment of ____rb_erase_color Subject: lib/ida: document locking requirements a bit better Subject: checkpatch: don't try to get maintained status when --no-tree is given Subject: scripts/checkpatch.pl: fix spelling Subject: checkpatch: don't check .pl files, improve absolute path commit log test Subject: checkpatch: avoid multiple line dereferences Subject: checkpatch: don't check c99 types like uint8_t under tools Subject: checkpatch: don't emit unified-diff error for rename-only patches Subject: binfmt_elf: use vmalloc() for allocation of vma_filesz Subject: init: reduce rootwait polling interval time to 5ms ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-12-07 22:44 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-12-07 22:44 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 3 fixes, based on ea5a9eff96fed8252f3a8c94a84959f981a93cae: Subject: zram: restrict add/remove attributes to root only Subject: radix tree test suite: fix compilation Subject: kcov: add missing #include <linux/sched.h> ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-12-03 1:26 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-12-03 1:26 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 2 fixes, based on 8dc0f265d39a3933f4c1f846c7c694f12a2ab88a: Subject: mm: workingset: fix NULL ptr in count_shadow_nodes Subject: mm, vmscan: add cond_resched() into shrink_node_memcg() ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-11-30 23:53 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-11-30 23:53 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 7 fixes, based on ded6e842cf499ef04b0d611d92b859d5b846c497: Subject: mm, thp: propagation of conditional compilation in khugepaged.c Subject: thp: fix corner case of munlock() of PTE-mapped THPs Subject: zram: fix unbalanced idr management at hot removal Subject: lib/debugobjects: export for use in modules Subject: kasan: update kasan_global for gcc 7 Subject: kasan: support use-after-scope detection Subject: mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-11-10 18:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-11-10 18:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits 15 fixes, based on 27bcd37e0240bbe33f0efe244b5aad52104115b3: Subject: mm: remove extra newline from allocation stall warning Subject: mm, frontswap: make sure allocated frontswap map is assigned Subject: shmem: fix pageflags after swapping DMA32 object Subject: scripts/bloat-o-meter: fix SIGPIPE Subject: mm/cma.c: check the max limit for cma allocation Subject: swapfile: fix memory corruption via malformed swapfile Subject: mm: hwpoison: fix thp split handling in memory_failure() Subject: Revert "console: don't prefer first registered if DT specifies stdout-path" Subject: ocfs2: fix not enough credit panic Subject: mm/hugetlb: fix huge page reservation leak in private mapping error paths Subject: mm/filemap: don't allow partially uptodate page for pipes Subject: coredump: fix unfreezable coredumping task Subject: memcg: prevent memcg caches to be both OFF_SLAB & OBJFREELIST_SLAB Subject: mm: kmemleak: scan .data.ro_after_init Subject: lib/stackdepot: export save/fetch stack for drivers ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-10-11 20:49 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-10-11 20:49 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - a few block updates that fell in my lap - lib/ updates - checkpatch - autofs - ipc - A ton of misc other things 102 patches, based on 1689c73a739d094b544c680b0dfdebe52ffee8fb: Subject: ocfs2: fix memory leak in dlm_migrate_request_handler() Subject: block: invalidate the page cache when issuing BLKZEROOUT Subject: block: require write_same and discard requests align to logical block size Subject: block: implement (some of) fallocate for block devices Subject: fs/select: add vmalloc fallback for select(2) Subject: radix-tree: 'slot' can be NULL in radix_tree_next_slot() Subject: radix-tree tests: add iteration test Subject: radix-tree tests: properly initialize mutex Subject: lib: harden strncpy_from_user Subject: include/linux/ctype.h: make isdigit() table lookupless Subject: lib/kstrtox.c: smaller _parse_integer() Subject: lib/bitmap.c: enhance bitmap syntax Subject: include/linux: provide a safe version of container_of() Subject: llist: introduce llist_entry_safe() Subject: checkpatch: see if modified files are marked obsolete in MAINTAINERS Subject: checkpatch: look for symbolic permissions and suggest octal instead Subject: checkpatch: test multiple line block comment alignment Subject: checkpatch: don't test for prefer ether_addr_<foo> Subject: checkpatch: externalize the structs that should be const Subject: const_structs.checkpatch: add frequently used from Julia Lawall's list Subject: checkpatch: speed up checking for filenames in sections marked obsolete Subject: checkpatch: improve the block comment * alignment test Subject: checkpatch: add --strict test for macro argument reuse Subject: checkpatch: add --strict test for precedence challenged macro arguments Subject: checkpatch: improve MACRO_ARG_PRECEDENCE test Subject: checkpatch: add warning for unnamed function definition arguments Subject: checkpatch: improve the octal permissions tests Subject: kprobes: include <asm/sections.h> instead of <asm-generic/sections.h> Subject: autofs: fix typos in Documentation/filesystems/autofs4.txt Subject: autofs: drop unnecessary extern in autofs_i.h Subject: autofs: test autofs versions first on sb initialization Subject: autofs: fix autofs4_fill_super() error exit handling Subject: autofs: add WARN_ON(1) for non dir/link inode case Subject: autofs: remove ino free in autofs4_dir_symlink() Subject: autofs: use autofs4_free_ino() to kfree dentry data Subject: autofs: remove obsolete sb fields Subject: autofs: don't fail to free_dev_ioctl(param) Subject: autofs: remove AUTOFS_DEVID_LEN Subject: autofs: fix Documentation regarding devid on ioctl Subject: autofs: update struct autofs_dev_ioctl in Documentation Subject: autofs: fix pr_debug() message Subject: autofs: fix dev ioctl number range check Subject: autofs: add autofs_dev_ioctl_version() for AUTOFS_DEV_IOCTL_VERSION_CMD Subject: autofs: fix print format for ioctl warning message Subject: autofs: move inclusion of linux/limits.h to uapi Subject: autofs4: move linux/auto_dev-ioctl.h to uapi/linux Subject: autofs: remove possibly misleading /* #define DEBUG */ Subject: autofs: refactor ioctl fn vector in iookup_dev_ioctl() Subject: pipe: relocate round_pipe_size() above pipe_set_size() Subject: pipe: move limit checking logic into pipe_set_size() Subject: pipe: refactor argument for account_pipe_buffers() Subject: pipe: fix limit checking in pipe_set_size() Subject: pipe: simplify logic in alloc_pipe_info() Subject: pipe: fix limit checking in alloc_pipe_info() Subject: pipe: make account_pipe_buffers() return a value, and use it Subject: pipe: cap initial pipe capacity according to pipe-max-size limit Subject: ptrace: clear TIF_SYSCALL_TRACE on ptrace detach Subject: rapidio/rio_cm: use memdup_user() instead of duplicating code Subject: random: simplify API for random address requests Subject: x86: use simpler API for random address requests Subject: ARM: use simpler API for random address requests Subject: arm64: use simpler API for random address requests Subject: tile: use simpler API for random address requests Subject: unicore32: use simpler API for random address requests Subject: random: remove unused randomize_range() Subject: dma-mapping: introduce the DMA_ATTR_NO_WARN attribute Subject: powerpc: implement the DMA_ATTR_NO_WARN attribute Subject: nvme: use the DMA_ATTR_NO_WARN attribute Subject: x86/panic: replace smp_send_stop() with kdump friendly version in panic path Subject: mips/panic: replace smp_send_stop() with kdump friendly version in panic path Subject: pps: kc: fix non-tickless system config dependency Subject: relay: Use irq_work instead of plain timer for deferred wakeup Subject: config/android: Remove CONFIG_IPV6_PRIVACY Subject: config: android: move device mapper options to recommended Subject: config: android: set SELinux as default security mode Subject: config: android: enable CONFIG_SECCOMP Subject: kcov: do not instrument lib/stackdepot.c Subject: ipc/sem.c: fix complex_count vs. simple op race Subject: ipc/msg: implement lockless pipelined wakeups Subject: ipc/msg: batch queue sender wakeups Subject: ipc/msg: make ss_wakeup() kill arg boolean Subject: ipc/msg: avoid waking sender upon full queue Subject: ipc/sem.c: Add cond_resched in exit_sme Subject: kdump, vmcoreinfo: report memory sections virtual addresses Subject: mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping Subject: scripts/tags.sh: enable code completion in VIM Subject: kthread: rename probe_kthread_data() to kthread_probe_data() Subject: kthread: kthread worker API cleanup Subject: kthread/smpboot: do not park in kthread_create_on_cpu() Subject: kthread: allow to call __kthread_create_on_node() with va_list args Subject: kthread: add kthread_create_worker*() Subject: kthread: add kthread_destroy_worker() Subject: kthread: detect when a kthread work is used by more workers Subject: kthread: initial support for delayed kthread work Subject: kthread: allow to cancel kthread work Subject: kthread: allow to modify delayed kthread work Subject: kthread: better support freezable kthread workers Subject: kthread: add kerneldoc for kthread_create() Subject: hung_task: allow hung_task_panic when hung_task_warnings is 0 Subject: treewide: remove redundant #include <linux/kconfig.h> Subject: fs: use mapping_set_error instead of opencoded set_bit Subject: mm: split gfp_mask and mapping flags into separate fields ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-10-07 23:53 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-10-07 23:53 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits - fsnotify updates - ocfs2 updates - all of MM 127 patches, based on 87840a2b7e048018d18d60bdac5c09224de85370: Subject: fsnotify: drop notification_mutex before destroying event Subject: fsnotify: convert notification_mutex to a spinlock Subject: fanotify: use notification_lock instead of access_lock Subject: fanotify: fix possible false warning when freeing events Subject: fsnotify: clean up spinlock assertions Subject: jiffies: add time comparison functions for 64 bit jiffies Subject: fs/ocfs2/dlmfs: remove deprecated create_singlethread_workqueue() Subject: fs/ocfs2/cluster: remove deprecated create_singlethread_workqueue() Subject: fs/ocfs2/super: remove deprecated create_singlethread_workqueue() Subject: fs/ocfs2/dlm: remove deprecated create_singlethread_workqueue() Subject: ocfs2: fix undefined struct variable in inode.h Subject: mm: oom: deduplicate victim selection code for memcg and global oom Subject: mm/vmalloc.c: fix align value calculation error Subject: mm: memcontrol: add sanity checks for memcg->id.ref on get/put Subject: mm/oom_kill.c: fix task_will_free_mem() comment Subject: mm, compaction: make whole_zone flag ignore cached scanner positions Subject: mm, compaction: cleanup unused functions Subject: mm, compaction: rename COMPACT_PARTIAL to COMPACT_SUCCESS Subject: mm, compaction: don't recheck watermarks after COMPACT_SUCCESS Subject: mm, compaction: add the ultimate direct compaction priority Subject: mm, compaction: use correct watermark when checking compaction success Subject: mm, compaction: create compact_gap wrapper Subject: mm, compaction: use proper alloc_flags in __compaction_suitable() Subject: mm, compaction: require only min watermarks for non-costly orders Subject: mm, vmscan: make compaction_ready() more accurate and readable Subject: mem-hotplug: fix node spanned pages when we have a movable node Subject: mm: fix set pageblock migratetype in deferred struct page init Subject: mm, vmscan: get rid of throttle_vm_writeout Subject: mm/debug_pagealloc.c: clean-up guard page handling code Subject: mm/debug_pagealloc.c: don't allocate page_ext if we don't use guard page Subject: mm/page_owner: move page_owner specific function to page_owner.c Subject: mm/page_ext: rename offset to index Subject: mm/page_ext: support extra space allocation by page_ext user Subject: mm/page_owner: don't define fields on struct page_ext by hard-coding Subject: do_generic_file_read(): fail immediately if killed Subject: mm: pagewalk: fix the comment for test_walk Subject: mm: unrig VMA cache hit ratio Subject: mm, swap: add swap_cluster_list Subject: mm,oom_reaper: reduce find_lock_task_mm() usage Subject: mm,oom_reaper: do not attempt to reap a task twice Subject: oom: keep mm of the killed task available Subject: kernel, oom: fix potential pgd_lock deadlock from __mmdrop Subject: mm, oom: get rid of signal_struct::oom_victims Subject: oom, suspend: fix oom_killer_disable vs. pm suspend properly Subject: mm, oom: enforce exit_oom_victim on current task Subject: mm: make sure that kthreads will not refault oom reaped memory Subject: oom, oom_reaper: allow to reap mm shared by the kthreads Subject: mm: use zonelist name instead of using hardcoded index Subject: mm: introduce arch_reserved_kernel_pages() Subject: mm/memblock.c: expose total reserved memory Subject: powerpc: implement arch_reserved_kernel_pages Subject: mm/nobootmem.c: remove duplicate macro ARCH_LOW_ADDRESS_LIMIT statements Subject: mm/bootmem.c: replace kzalloc() by kzalloc_node() Subject: mm: don't use radix tree writeback tags for pages in swap cache Subject: oom: warn if we go OOM for higher order and compaction is disabled Subject: mm: mlock: check against vma for actual mlock() size Subject: mm: mlock: avoid increase mm->locked_vm on mlock() when already mlock2(,MLOCK_ONFAULT) Subject: selftest: split mlock2_ funcs into separate mlock2.h Subject: selftests/vm: add test for mlock() when areas are intersected Subject: selftest: move seek_to_smaps_entry() out of mlock2-tests.c Subject: selftests: expanding more mlock selftest Subject: thp, dax: add thp_get_unmapped_area for pmd mappings Subject: ext2/4, xfs: call thp_get_unmapped_area() for pmd mappings Subject: cpu: fix node state for whether it contains CPU Subject: fs/proc/task_mmu.c: make the task_mmu walk_page_range() limit in clear_refs_write() obvious Subject: thp: reduce usage of huge zero page's atomic counter Subject: mm/memcontrol.c: make the walk_page_range() limit obvious Subject: memory-hotplug: fix store_mem_state() return value Subject: mm: fix cache mode tracking in vm_insert_mixed() Subject: mm, swap: use offset of swap entry as key of swap cache Subject: mm: remove page_file_index Subject: Revert "mm, oom: prevent premature OOM killer invocation for high order request" Subject: mm, compaction: more reliably increase direct compaction priority Subject: mm, compaction: restrict full priority to non-costly orders Subject: mm, compaction: make full priority ignore pageblock suitability Subject: mm, page_alloc: pull no_progress_loops update to should_reclaim_retry() Subject: mm, compaction: ignore fragindex from compaction_zonelist_suitable() Subject: mm, compaction: restrict fragindex to costly orders Subject: mm: don't emit warning from pagefault_out_of_memory() Subject: mm/page_io.c: replace some BUG_ON()s with VM_BUG_ON_PAGE() Subject: mm: move phys_mem_access_prot_allowed() declaration to pgtable.h Subject: mm: memcontrol: consolidate cgroup socket tracking Subject: mm/shmem.c: constify anon_ops Subject: mm: nobootmem: move the comment of free_all_bootmem Subject: mm/hugetlb: fix memory offline with hugepage size > memory block size Subject: mm/hugetlb: check for reserved hugepages during memory offline Subject: mm/hugetlb: improve locking in dissolve_free_huge_pages() Subject: mm/page_isolation: fix typo: "paes" -> "pages" Subject: mm,ksm: add __GFP_HIGH to the allocation in alloc_stable_node() Subject: mm: vm_page_prot: update with WRITE_ONCE/READ_ONCE Subject: mm: vma_adjust: remove superfluous confusing update in remove_next == 1 case Subject: mm: vma_merge: fix vm_page_prot SMP race condition against rmap_walk Subject: mm: vma_adjust: remove superfluous check for next not NULL Subject: mm: vma_adjust: minor comment correction Subject: mm: vma_merge: correct false positive from __vma_unlink->validate_mm_rb Subject: mm: clarify why we avoid page_mapcount() for slab pages in dump_page() Subject: oom: print nodemask in the oom report Subject: mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE Subject: arm64 Kconfig: select gigantic page Subject: vfs,mm: fix a dead loop in truncate_inode_pages_range() Subject: mm: consolidate warn_alloc_failed users Subject: mm: warn about allocations which stall for too long Subject: mm: remove unnecessary condition in remove_inode_hugepages Subject: linux/mm.h: canonicalize macro PAGE_ALIGNED() definition Subject: ia64: implement atomic64_dec_if_positive Subject: atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE Subject: proc: much faster /proc/vmstat Subject: proc: faster /proc/*/status Subject: seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char Subject: meminfo: break apart a very long seq_printf with #ifdefs Subject: proc: relax /proc/<tid>/timerslack_ns capability requirements Subject: proc: add LSM hook checks to /proc/<tid>/timerslack_ns Subject: proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self Subject: mm, proc: fix region lost in /proc/self/smaps Subject: Documentation/filesystems/proc.txt: add more description for maps/smaps Subject: min/max: remove sparse warnings when they're nested Subject: nmi_backtrace: add more trigger_*_cpu_backtrace() methods Subject: nmi_backtrace: do a local dump_stack() instead of a self-NMI Subject: arch/tile: adopt the new nmi_backtrace framework Subject: nmi_backtrace: generate one-line reports for idle cpus Subject: spelling.txt: "modeled" is spelt correctly Subject: uprobes: remove function declarations from arch/{mips,s390} Subject: .gitattributes: set git diff driver for C source code files Subject: mailmap: add Johan Hovold Subject: CREDITS: update Pavel's information, add GPG key, remove snail mail address Subject: cred: simpler, 1D supplementary groups Subject: console: don't prefer first registered if DT specifies stdout-path ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-09-30 22:11 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-09-30 22:11 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 338 bytes --] 4 fixes, based on e3b3656ca63e23b5755183718df36fb9ff518b02: Subject: mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page() Subject: ocfs2: fix deadlock on mmapped page in ocfs2_write_begin_nolock() Subject: include/linux/property.h: fix typo/compile error Subject: MAINTAINERS: Javi has moved [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-09-28 22:22 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-09-28 22:22 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 393 bytes --] 5 fixes, based on 8ab293e3a1376574e11f9059c09cc0db212546cb: Subject: mm,ksm: fix endless looping in allocating memory when ksm enable Subject: dma-mapping.h: preserve unmap info for CONFIG_DMA_API_DEBUG Subject: scripts/recordmcount.c: account for .softirqentry.text Subject: mem-hotplug: use nodes that contain memory as mask in new_node_page() Subject: MAINTAINERS: Mark has moved [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-09-19 21:43 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-09-19 21:43 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 1326 bytes --] 20 fixes, based on 3be7988674ab33565700a37b210f502563d932e6: Subject: mem-hotplug: don't clear the only node in new_node_page() Subject: ocfs2/dlm: fix race between convert and migration Subject: MAINTAINERS: Maik has moved Subject: khugepaged: fix use-after-free in collapse_huge_page() Subject: mm, thp: fix leaking mapped pte in __collapse_huge_page_swapin() Subject: mm: avoid endless recursion in dump_page() Subject: MAINTAINERS: update email for VLYNQ bus entry Subject: autofs: use dentry flags to block walks during expire Subject: mm: fix the page_swap_info() BUG_ON check Subject: ipc/shm: fix crash if CONFIG_SHMEM is not set Subject: ocfs2: fix trans extend while flush truncate log Subject: ocfs2: fix trans extend while free cached blocks Subject: fsnotify: add a way to stop queueing events on group shutdown Subject: fanotify: fix list corruption in fanotify_get_response() Subject: ocfs2: fix double unlock in case retry after free truncate log Subject: mm: memcontrol: make per-cpu charge cache IRQ-safe for socket accounting Subject: cgroup: duplicate cgroup reference when cloning sockets Subject: ocfs2: fix start offset to ocfs2_zero_range_for_truncate() Subject: Revert "ocfs2: bump up o2cb network protocol version" Subject: rapidio/rio_cm: avoid GFP_KERNEL in atomic context [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-09-01 23:14 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-09-01 23:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 1144 bytes --] 14 fixes, based on 071e31e254e0e0c438eecba3dba1d6e2d0da36c2: Subject: mm, oom: prevent premature OOM killer invocation for high order request Subject: kexec: fix double-free when failing to relocate the purgatory Subject: kconfig: tinyconfig: provide whole choice blocks to avoid warnings Subject: lib/test_hash.c: fix warning in two-dimensional array init Subject: lib/test_hash.c: fix warning in preprocessor symbol evaluation Subject: mm, vmscan: only allocate and reclaim from zones with pages managed by the buddy allocator Subject: drivers/scsi/wd719x.c: remove last declaration using DEFINE_PCI_DEVICE_TABLE Subject: treewide: remove references to the now unnecessary DEFINE_PCI_DEVICE_TABLE Subject: printk/nmi: avoid direct printk()-s from __printk_nmi_flush() Subject: mm, mempolicy: task->mempolicy must be NULL before dropping final reference Subject: MAINTAINERS: Vladimir has moved Subject: kernel/fork: fix CLONE_CHILD_CLEARTID regression in nscd Subject: rapidio/documentation/mport_cdev: add missing parameter description Subject: rapidio/tsi721: fix incorrect detection of address translation condition [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-08-25 22:16 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-08-25 22:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 738 bytes --] 12 fixes, based on 61c04572de404e52a655a36752e696bbcb483cf5: Subject: byteswap: don't use __builtin_bswap*() with sparse Subject: get_maintainer: quiet noisy implicit -f vcs_file_exists checking Subject: sysctl: handle error writing UINT_MAX to u32 fields Subject: stackdepot: fix mempolicy use-after-free Subject: soft_dirty: fix soft_dirty during THP split Subject: printk: fix parsing of "brl=" option Subject: treewide: replace config_enabled() with IS_ENABLED() (2nd round) Subject: mm: clarify COMPACTION Kconfig text Subject: mm: memcontrol: avoid unused function warning Subject: fs/seq_file: fix out-of-bounds read Subject: dax: fix device-dax region base Subject: mm: silently skip readahead for DAX inodes [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-08-11 22:32 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-08-11 22:32 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 579 bytes --] 7 fixes, based on 85e97be32c6242c98dbbc7a241b4a78c1b93327b: Subject: mm/hugetlb: fix incorrect hugepages count during mem hotplug Subject: proc, meminfo: use correct helpers for calculating LRU sizes in meminfo Subject: mm: memcontrol: fix swap counter leak on swapout from offline cgroup Subject: mm: memcontrol: fix memcg id ref counter on swap charge move Subject: kasan: remove the unnecessary WARN_ONCE from quarantine.c Subject: mm, oom: fix uninitialized ret in task_will_free_mem() Subject: mm/memory_hotplug.c: initialize per_cpu_nodestats for hotadded pgdats [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-08-04 22:31 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-08-04 22:31 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits A few late-breaking fixes. 7 fixes, based on c1ece76719205690f4b448460d9b85c130e8021b: Subject: mm: disable CONFIG_MEMORY_HOTPLUG when KASAN is enabled Subject: mm/memblock: fix a typo in a comment Subject: mm: initialise per_cpu_nodestats for all online pgdats at boot Subject: powerpc/fsl_rio: fix a missing error code Subject: slub: drop bogus inline for fixup_red_left() Subject: MAINTAINERS: update cgroup's document path Subject: mm/memblock.c: fix NULL dereference error ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-08-03 20:45 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-08-03 20:45 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 1288 bytes --] - dma-mapping API cleanup - a few cleanups and misc things - use jump labels in dynamic-debug 18 patches, based on bf0f500bd0199aab613eb0ecb3412edd5472740d: Subject: drivers/fpga/Kconfig: fix build failure Subject: tree-wide: replace config_enabled() with IS_ENABLED() Subject: include/linux/bitmap.h: cleanup Subject: media: mtk-vcodec: remove unused dma_attrs Subject: dma-mapping: use unsigned long for dma_attrs Subject: samples/kprobe: convert the printk to pr_info/pr_err Subject: samples/jprobe: convert the printk to pr_info/pr_err Subject: samples/kretprobe: convert the printk to pr_info/pr_err Subject: samples/kretprobe: fix the wrong type Subject: block: remove BLK_DEV_DAX config option Subject: MAINTAINERS: update email and list of Samsung HW driver maintainers Subject: drivers/media/dvb-frontends/cxd2841er.c: avoid misleading gcc warning Subject: powerpc: add explicit #include <asm/asm-compat.h> for jump label Subject: sparc: support static_key usage in non-module __exit sections Subject: tile: support static_key usage in non-module __exit sections Subject: arm: jump label may reference text in __exit Subject: jump_label: remove bug.h, atomic.h dependencies for HAVE_JUMP_LABEL Subject: dynamic_debug: add jump label support [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-08-02 21:01 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-08-02 21:01 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 7166 bytes --] - the rest of ocfs2 - various hotfixes, mainly MM - quite a bit of misc stuff - drivers, fork, exec, signals, etc. - printk updates - firmware - checkpatch - nilfs2 - more kexec stuff than usual - rapidio updates - w1 things 111 patches, based on f7b32e4c021fd788f13f6785e17efbc3eb05b351: Subject: ocfs2: ensure that dlm lockspace is created by kernel module Subject: ocfs2: retry on ENOSPC if sufficient space in truncate log Subject: ocfs2/dlm: disable BUG_ON when DLM_LOCK_RES_DROPPING_REF is cleared before dlm_deref_lockres_done_handler Subject: ocfs2/dlm: solve a BUG when deref failed in dlm_drop_lockres_ref Subject: ocfs2/dlm: continue to purge recovery lockres when recovery master goes down Subject: mm: fail prefaulting if page table allocation fails Subject: mm: move swap-in anonymous page into active list Subject: tools/testing/radix-tree/linux/gfp.h: fix bitrotted value Subject: mm/hugetlb: avoid soft lockup in set_max_huge_pages() Subject: mm, hugetlb: fix huge_pte_alloc BUG_ON Subject: memcg: put soft limit reclaim out of way if the excess tree is empty Subject: mm/kasan: fix corruptions and false positive reports Subject: mm/kasan: don't reduce quarantine in atomic contexts Subject: mm/kasan, slub: don't disable interrupts when object leaves quarantine Subject: mm/kasan: get rid of ->alloc_size in struct kasan_alloc_meta Subject: mm/kasan: get rid of ->state in struct kasan_alloc_meta Subject: kasan: improve double-free reports Subject: kasan: avoid overflowing quarantine size on low memory systems Subject: radix-tree: account nodes to memcg only if explicitly requested Subject: mm: vmscan: fix memcg-aware shrinkers not called on global reclaim Subject: sysv, ipc: fix security-layer leaking Subject: UBSAN: fix typo in format string Subject: cgroup: update cgroup's document path Subject: MAINTAINERS: befs: add new maintainers Subject: proc_oom_score: remove tasklist_lock and pid_alive() Subject: procfs: avoid 32-bit time_t in /proc/*/stat Subject: fs/proc/task_mmu.c: suppress compilation warnings with W=1 Subject: init/Kconfig: make COMPILE_TEST depend on !UML Subject: memstick: don't allocate unused major for ms_block Subject: treewide: replace obsolete _refok by __ref Subject: uapi: move forward declarations of internal structures Subject: mailmap: add Linus L_ssing Subject: include: mman: use bool instead of int for the return value of arch_validate_prot Subject: task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works Subject: dynamic_debug: only add header when used Subject: printk: do not include interrupt.h Subject: printk: create pr_<level> functions Subject: printk: introduce suppress_message_printing() Subject: printk: include <asm/sections.h> instead of <asm-generic/sections.h> Subject: fbdev/bfin_adv7393fb: move DRIVER_NAME before its first use Subject: ratelimit: extend to print suppressed messages on release Subject: printk: add kernel parameter to control writes to /dev/kmsg Subject: get_maintainer.pl: reduce need for command-line option -f Subject: lib/iommu-helper: skip to next segment Subject: crc32: use ktime_get_ns() for measurement Subject: radix-tree: fix comment about "exceptional" bits Subject: firmware: consolidate kmap/read/write logic Subject: firmware: provide infrastructure to make fw caching optional Subject: firmware: support loading into a pre-allocated buffer Subject: checkpatch: skip long lines that use an EFI_GUID macro Subject: checkpatch: allow c99 style // comments Subject: checkpatch: yet another commit id improvement Subject: checkpatch: don't complain about BIT macro in uapi Subject: checkpatch: improve 'bare use of' signed/unsigned types warning Subject: checkpatch: check signoff when reading stdin Subject: checkpatch: if no filenames then read stdin Subject: binfmt_elf: fix calculations for bss padding Subject: mm: refuse wrapped vm_brk requests Subject: fs/binfmt_em86.c: fix incompatible pointer type Subject: nilfs2: hide function name argument from nilfs_error() Subject: nilfs2: add nilfs_msg() message interface Subject: nilfs2: embed a back pointer to super block instance in nilfs object Subject: nilfs2: reduce bare use of printk() with nilfs_msg() Subject: nilfs2: replace nilfs_warning() with nilfs_msg() Subject: nilfs2: emit error message when I/O error is detected Subject: nilfs2: do not use yield() Subject: nilfs2: refactor parser of snapshot mount option Subject: nilfs2: fix misuse of a semaphore in sysfs code Subject: nilfs2: use BIT() macro Subject: nilfs2: move ioctl interface and disk layout to uapi separately Subject: reiserfs: fix "new_insert_key may be used uninitialized ..." Subject: signal: consolidate {TS,TLF}_RESTORE_SIGMASK code Subject: kernel/exit.c: quieten greatest stack depth printk Subject: cpumask: fix code comment Subject: kexec: return error number directly Subject: ARM: kdump: advertise boot aliased crash kernel resource Subject: ARM: kexec: advertise location of bootable RAM Subject: kexec: don't invoke OOM-killer for control page allocation Subject: kexec: ensure user memory sizes do not wrap Subject: kdump: arrange for paddr_vmcoreinfo_note() to return phys_addr_t Subject: kexec: allow architectures to override boot mapping Subject: ARM: keystone: dts: add psci command definition Subject: ARM: kexec: fix kexec for Keystone 2 Subject: kexec: use core_param for crash_kexec_post_notifiers boot option Subject: kexec: add a kexec_crash_loaded() function Subject: kexec: allow kdump with crash_kexec_post_notifiers Subject: kexec: add restriction on kexec_load() segment sizes Subject: rapidio: add RapidIO channelized messaging driver Subject: rapidio: remove unnecessary 0x prefixes before %pa extension uses Subject: rapidio/documentation: fix mangled paragraph in mport_cdev Subject: rapidio: fix return value description for dma_prep functions Subject: rapidio/tsi721_dma: add channel mask and queue size parameters Subject: rapidio/tsi721: add PCIe MRRS override parameter Subject: rapidio/tsi721: add messaging mbox selector parameter Subject: rapidio/tsi721_dma: advance queue processing from transfer submit call Subject: rapidio: fix error handling in mbox request/release functions Subject: rapidio/idt_gen2: fix locking warning Subject: rapidio: change inbound window size type to u64 Subject: rapidio: modify for rev.3 specification changes Subject: powerpc/fsl_rio: apply changes for RIO spec rev 3 Subject: rapidio/switches: add driver for IDT gen3 switches Subject: w1: remove need for ida and use PLATFORM_DEVID_AUTO Subject: w1: add helper macro module_w1_family Subject: w1:omap_hdq: fix regression Subject: init: allow blacklisting of module_init functions Subject: relay: add global mode support for buffer-only channels Subject: init/Kconfig: ban CONFIG_LOCALVERSION_AUTO with allmodconfig Subject: config: add android config fragments Subject: init/Kconfig: add clarification for out-of-tree modules Subject: kcov: allow more fine-grained coverage instrumentation Subject: ipc: delete "nr_ipc_ns" [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-07-28 22:42 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-07-28 22:42 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 6861 bytes --] - the rest of MM 101 patches, based on 194dc870a5890e855ecffb30f3b80ba7c88f96d6: Subject: proc, oom: drop bogus task_lock and mm check Subject: proc, oom: drop bogus sighand lock Subject: proc, oom_adj: extract oom_score_adj setting into a helper Subject: mm, oom_adj: make sure processes sharing mm have same view of oom_score_adj Subject: mm, oom: skip vforked tasks from being selected Subject: mm, oom: kill all tasks sharing the mm Subject: mm, oom: fortify task_will_free_mem() Subject: mm, oom: task_will_free_mem should skip oom_reaped tasks Subject: mm, oom_reaper: do not attempt to reap a task more than twice Subject: mm, oom: hide mm which is shared with kthread or global init Subject: mm, oom: tighten task_will_free_mem() locking Subject: mm: update the comment in __isolate_free_page Subject: mm: fix vm-scalability regression in cgroup-aware workingset code Subject: mm/compaction: remove unnecessary order check in try_to_compact_pages() Subject: freezer, oom: check TIF_MEMDIE on the correct task Subject: cpuset, mm: fix TIF_MEMDIE check in cpuset_change_task_nodemask Subject: mm, meminit: remove early_page_nid_uninitialised Subject: mm, vmstat: add infrastructure for per-node vmstats Subject: mm, vmscan: move lru_lock to the node Subject: mm, vmscan: move LRU lists to node Subject: mm, mmzone: clarify the usage of zone padding Subject: mm, vmscan: begin reclaiming pages on a per-node basis Subject: mm, vmscan: have kswapd only scan based on the highest requested zone Subject: mm, vmscan: make kswapd reclaim in terms of nodes Subject: mm, vmscan: remove balance gap Subject: mm, vmscan: simplify the logic deciding whether kswapd sleeps Subject: mm, vmscan: by default have direct reclaim only shrink once per node Subject: mm, vmscan: remove duplicate logic clearing node congestion and dirty state Subject: mm: vmscan: do not reclaim from kswapd if there is any eligible zone Subject: mm, vmscan: make shrink_node decisions more node-centric Subject: mm, memcg: move memcg limit enforcement from zones to nodes Subject: mm, workingset: make working set detection node-aware Subject: mm, page_alloc: consider dirtyable memory in terms of nodes Subject: mm: move page mapped accounting to the node Subject: mm: rename NR_ANON_PAGES to NR_ANON_MAPPED Subject: mm: move most file-based accounting to the node Subject: mm: move vmscan writes and file write accounting to the node Subject: mm, vmscan: only wakeup kswapd once per node for the requested classzone Subject: mm, page_alloc: wake kswapd based on the highest eligible zone Subject: mm: convert zone_reclaim to node_reclaim Subject: mm, vmscan: avoid passing in classzone_idx unnecessarily to shrink_node Subject: mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready Subject: mm, vmscan: avoid passing in `remaining' unnecessarily to prepare_kswapd_sleep() Subject: mm, vmscan: Have kswapd reclaim from all zones if reclaiming and buffer_heads_over_limit Subject: mm, vmscan: add classzone information to tracepoints Subject: mm, page_alloc: remove fair zone allocation policy Subject: mm: page_alloc: cache the last node whose dirty limit is reached Subject: mm: vmstat: replace __count_zone_vm_events with a zone id equivalent Subject: mm: vmstat: account per-zone stalls and pages skipped during reclaim Subject: mm, vmstat: print node-based stats in zoneinfo file Subject: mm, vmstat: remove zone and node double accounting by approximating retries Subject: mm, page_alloc: fix dirtyable highmem calculation Subject: mm, pagevec: release/reacquire lru_lock on pgdat change Subject: mm: show node_pages_scanned per node, not zone Subject: mm, vmscan: Update all zone LRU sizes before updating memcg Subject: mm, vmscan: remove redundant check in shrink_zones() Subject: mm, vmscan: release/reacquire lru_lock on pgdat change Subject: mm: add per-zone lru list stat Subject: mm, vmscan: remove highmem_file_pages Subject: mm: remove reclaim and compaction retry approximations Subject: mm: consider whether to decivate based on eligible zones inactive ratio Subject: mm, vmscan: account for skipped pages as a partial scan Subject: mm: bail out in shrink_inactive_list() Subject: mm/zsmalloc: use obj_index to keep consistent with others Subject: mm/zsmalloc: take obj index back from find_alloced_obj Subject: mm/zsmalloc: use class->objs_per_zspage to get num of max objects Subject: mm/zsmalloc: avoid calculate max objects of zspage twice Subject: mm/zsmalloc: keep comments consistent with code Subject: mm/zsmalloc: add __init,__exit attribute Subject: mm/zsmalloc: use helper to clear page->flags bit Subject: mm, THP: clean up return value of madvise_free_huge_pmd Subject: memblock: include <asm/sections.h> instead of <asm-generic/sections.h> Subject: mm: CONFIG_ZONE_DEVICE stop depending on CONFIG_EXPERT Subject: mm: cleanup ifdef guards for vmem_altmap Subject: mm: track NR_KERNEL_STACK in KiB instead of number of stacks Subject: mm: fix memcg stack accounting for sub-page stacks Subject: kdb: use task_cpu() instead of task_thread_info()->cpu Subject: printk: when dumping regs, show the stack, not thread_info Subject: mm/memblock.c: add new infrastructure to address the mem limit issue Subject: arm64:acpi: fix the acpi alignment exception when 'mem=' specified Subject: kmemleak: don't hang if user disables scanning early Subject: make __section_nr() more efficient Subject: mm: hwpoison: remove incorrect comments Subject: mm, compaction: don't isolate PageWriteback pages in MIGRATE_SYNC_LIGHT mode Subject: Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements" Subject: mm: add cond_resched() to generic_swapfile_activate() Subject: mm: optimize copy_page_to/from_iter_iovec Subject: mem-hotplug: alloc new page from a nearest neighbor node when mem-offline Subject: mm/memblock.c: fix index adjustment error in __next_mem_range_rev() Subject: zsmalloc: Delete an unnecessary check before the function call "iput" Subject: mm: fix use-after-free if memory allocation failed in vma_adjust() Subject: mm, kasan: account for object redzone in SLUB's nearest_obj() Subject: mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB Subject: lib/stackdepot.c: use __GFP_NOWARN for stack allocations Subject: mm, page_alloc: set alloc_flags only once in slowpath Subject: mm, page_alloc: don't retry initial attempt in slowpath Subject: mm, page_alloc: restructure direct compaction handling in slowpath Subject: mm, page_alloc: make THP-specific decisions more generic Subject: mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocations Subject: mm, compaction: introduce direct compaction priority Subject: mm, compaction: simplify contended compaction handling [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-07-26 22:16 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-07-26 22:16 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 7441 bytes --] - a few misc bits - ocfs2 - most(?) of MM 126 patches, based on e65805251f2db69c9f67ed8062ab82526be5a374: Subject: arm: get rid of superfluous __GFP_REPEAT Subject: dax: some small updates to dax.txt documentation Subject: dax: remote unused fault wrappers Subject: dma-debug: track bucket lock state for static checkers Subject: fbmon: remove unused function argument Subject: CFLAGS: add -Wunused-but-set-parameter Subject: kbuild: abort build on bad stack protector flag Subject: scripts/bloat-o-meter: fix percent on <1% changes Subject: m32r: add __ucmpdi2 to fix build failure Subject: debugobjects.h: fix trivial kernel doc warning Subject: ocfs2: fix a redundant re-initialization Subject: ocfs2: improve recovery performance Subject: ocfs2: cleanup unneeded goto in ocfs2_create_new_inode_locks Subject: ocfs2/dlm: fix memory leak of dlm_debug_ctxt Subject: ocfs2: cleanup implemented prototypes Subject: ocfs2: remove obscure BUG_ON in dlmglue Subject: ocfs2/cluster: clean up unnecessary assignment for 'ret' Subject: fs/fs-writeback.c: add a new writeback list for sync Subject: fs/fs-writeback.c: inode writeback list tracking tracepoints Subject: mm: reorganize SLAB freelist randomization Subject: mm: SLUB freelist randomization Subject: slab: make GFP_SLAB_BUG_MASK information more human readable Subject: slab: do not panic on invalid gfp_mask Subject: mm: faster kmalloc_array(), kcalloc() Subject: mm/slab: use list_move instead of list_del/list_add Subject: mm/memcontrol.c: remove the useless parameter for mc_handle_swap_pte Subject: mm/init: fix zone boundary creation Subject: memory-hotplug: add move_pfn_range() Subject: memory-hotplug: more general validation of zone during online Subject: memory-hotplug: use zone_can_shift() for sysfs valid_zones attribute Subject: mm: zap ZONE_OOM_LOCKED Subject: mm: oom: add memcg to oom_control Subject: include/linux/mmdebug.h: add VM_WARN which maps to WARN() Subject: powerpc/mm: check for irq disabled() only if DEBUG_VM is enabled Subject: zram: rename zstrm find-release functions Subject: zram: switch to crypto compress API Subject: zram: use crypto api to check alg availability Subject: zram: cosmetic: cleanup documentation Subject: zram: delete custom lzo/lz4 Subject: zram: add more compression algorithms Subject: zram: drop gfp_t from zcomp_strm_alloc() Subject: mm: use put_page() to free page instead of putback_lru_page() Subject: mm: migrate: support non-lru movable page migration Subject: mm: balloon: use general non-lru movable page feature Subject: zsmalloc: keep max_object in size_class Subject: zsmalloc: use bit_spin_lock Subject: zsmalloc: use accessor Subject: zsmalloc: factor page chain functionality out Subject: zsmalloc: introduce zspage structure Subject: zsmalloc: separate free_zspage from putback_zspage Subject: zsmalloc: use freeobj for index Subject: zsmalloc: page migration support Subject: zram: use __GFP_MOVABLE for memory allocation Subject: zsmalloc: use OBJ_TAG_BIT for bit shifter Subject: mm/compaction: split freepages without holding the zone lock Subject: mm/page_owner: initialize page owner without holding the zone lock Subject: mm/page_owner: copy last_migrate_reason in copy_page_owner() Subject: mm/page_owner: introduce split_page_owner and replace manual handling Subject: tools/vm/page_owner: increase temporary buffer size Subject: mm/page_owner: use stackdepot to store stacktrace Subject: mm/page_alloc: introduce post allocation processing on page allocator Subject: mm/page_isolation: clean up confused code Subject: mm: thp: check pmd_trans_unstable() after split_huge_pmd() Subject: mm/hugetlb: simplify hugetlb unmap Subject: mm: change the interface for __tlb_remove_page() Subject: mm/mmu_gather: track page size with mmu gather and force flush if page size change Subject: mm: remove pointless struct in struct page definition Subject: mm: clean up non-standard page->_mapcount users Subject: mm: memcontrol: cleanup kmem charge functions Subject: mm: charge/uncharge kmemcg from generic page allocator paths Subject: mm: memcontrol: teach uncharge_list to deal with kmem pages Subject: arch: x86: charge page tables to kmemcg Subject: pipe: account to kmemcg Subject: af_unix: charge buffers to kmemcg Subject: mm,oom: remove unused argument from oom_scan_process_thread(). Subject: mm, frontswap: convert frontswap_enabled to static key Subject: mm: add NR_ZSMALLOC to vmstat Subject: include/linux/memblock.h: Clean up code for several trivial details Subject: mm, oom_reaper: make sure that mmput_async is called only when memory was reaped Subject: mm, memcg: use consistent gfp flags during readahead Subject: mm/memblock.c:memblock_add_range(): if nr_new is 0 just return Subject: mm: make optimistic check for swapin readahead Subject: mm: make swapin readahead to improve thp collapse rate Subject: mm, thp: make swapin readahead under down_read of mmap_sem Subject: mm, thp: fix locking inconsistency in collapse_huge_page Subject: khugepaged: recheck pmd after mmap_sem re-acquired Subject: thp, mlock: update unevictable-lru.txt Subject: mm: do not pass mm_struct into handle_mm_fault Subject: mm: introduce fault_env Subject: mm: postpone page table allocation until we have page to map Subject: rmap: support file thp Subject: mm: introduce do_set_pmd() Subject: thp, vmstats: add counters for huge file pages Subject: thp: support file pages in zap_huge_pmd() Subject: thp: handle file pages in split_huge_pmd() Subject: thp: handle file COW faults Subject: thp: skip file huge pmd on copy_huge_pmd() Subject: thp: prepare change_huge_pmd() for file thp Subject: thp: run vma_adjust_trans_huge() outside i_mmap_rwsem Subject: thp: file pages support for split_huge_page() Subject: thp, mlock: do not mlock PTE-mapped file huge pages Subject: vmscan: split file huge pages before paging them out Subject: page-flags: relax policy for PG_mappedtodisk and PG_reclaim Subject: radix-tree: implement radix_tree_maybe_preload_order() Subject: filemap: prepare find and delete operations for huge pages Subject: truncate: handle file thp Subject: mm, rmap: account shmem thp pages Subject: shmem: prepare huge= mount option and sysfs knob Subject: shmem: get_unmapped_area align huge page Subject: shmem: add huge pages support Subject: shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings Subject: thp: extract khugepaged from mm/huge_memory.c Subject: khugepaged: move up_read(mmap_sem) out of khugepaged_alloc_page() Subject: shmem: make shmem_inode_info::lock irq-safe Subject: khugepaged: add support of collapse for tmpfs/shmem pages Subject: thp: introduce CONFIG_TRANSPARENT_HUGE_PAGECACHE Subject: shmem: split huge pages beyond i_size under memory pressure Subject: thp: update Documentation/{vm/transhuge,filesystems/proc}.txt Subject: mm, thp: fix comment inconsistency for swapin readahead functions Subject: mm, thp: convert from optimistic swapin collapsing to conservative Subject: mm: fix build warnings in <linux/compaction.h> Subject: mm: memcontrol: remove BUG_ON in uncharge_list Subject: mm: memcontrol: fix documentation for compound parameter Subject: cgroup: fix idr leak for the first cgroup root Subject: cgroup: remove unnecessary 0 check from css_from_id() Subject: thp: fix comments of __pmd_trans_huge_lock() [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-07-20 22:44 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-07-20 22:44 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 378 bytes --] 5 fixes, based on 47ef4ad2684d380dd6d596140fb79395115c3950: Subject: mm: memcontrol: fix cgroup creation failure after many small jobs Subject: radix-tree: fix radix_tree_iter_retry() for tagged iterators. Subject: testing/radix-tree: fix a macro expansion bug Subject: tools/vm/slabinfo: fix an unintentional printf Subject: pps: do not crash when failed to register [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-07-14 19:06 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-07-14 19:06 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 1338 bytes --] 20 fixes, based on f97d10454e4da2aceb44dfa7c59bb43ba9f50199: Subject: mm, compaction: prevent VM_BUG_ON when terminating freeing scanner Subject: kasan: add newline to messages Subject: scripts/gdb: silence 'nothing to do' message Subject: scripts/gdb: rebuild constants.py on dependancy change Subject: scripts/gdb: add constants.py to .gitignore Subject: scripts/gdb: Perform path expansion to lx-symbol's arguments Subject: Revert "scripts/gdb: add a Radix Tree Parser" Subject: Revert "scripts/gdb: add documentation example for radix tree" Subject: madvise_free, thp: fix madvise_free_huge_pmd return value after splitting Subject: uapi: export lirc.h header Subject: kasan/quarantine: fix bugs on qlist_move_cache() Subject: mm, meminit: always return a valid node from early_pfn_to_nid Subject: mm, meminit: ensure node is online before checking whether pages are uninitialised Subject: gcov: add support for gcc version >= 6 Subject: vmlinux.lds: account for destructor sections Subject: mm: thp: move pmd check inside ptl for freeze_page() Subject: mm: rmap: call page_check_address() with sync enabled to avoid racy check Subject: mm: thp: refix false positive BUG in page_move_anon_rmap() Subject: mm: workingset: printk missing log level, use pr_info() Subject: m32r: fix build warning about putc [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-06-24 21:48 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-06-24 21:48 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 2596 bytes --] Two weeks worth of fixes here. 41 fixes, based on 63c04ee7d3b7c8d8e2726cb7c5f8a5f6fcc1e3b2: Subject: mm,oom_reaper: don't call mmput_async() without atomic_inc_not_zero() Subject: oom_reaper: avoid pointless atomic_inc_not_zero usage. Subject: selftests/vm/compaction_test: fix write to restore nr_hugepages Subject: tmpfs: don't undo fallocate past its last page Subject: tree wide: get rid of __GFP_REPEAT for order-0 allocations part I Subject: x86: get rid of superfluous __GFP_REPEAT Subject: x86/efi: get rid of superfluous __GFP_REPEAT Subject: arm64: get rid of superfluous __GFP_REPEAT Subject: arc: get rid of superfluous __GFP_REPEAT Subject: mips: get rid of superfluous __GFP_REPEAT Subject: nios2: get rid of superfluous __GFP_REPEAT Subject: parisc: get rid of superfluous __GFP_REPEAT Subject: score: get rid of superfluous __GFP_REPEAT Subject: powerpc: get rid of superfluous __GFP_REPEAT Subject: sparc: get rid of superfluous __GFP_REPEAT Subject: s390: get rid of superfluous __GFP_REPEAT Subject: sh: get rid of superfluous __GFP_REPEAT Subject: tile: get rid of superfluous __GFP_REPEAT Subject: unicore32: get rid of superfluous __GFP_REPEAT Subject: jbd2: get rid of superfluous __GFP_REPEAT Subject: MAINTAINERS: update Calgary IOMMU Subject: mm: mempool: kasan: don't poot mempool objects in quarantine Subject: mm, sl[au]b: add __GFP_ATOMIC to the GFP reclaim mask Subject: mailmap: add Antoine Tenart's email Subject: mailmap: add Boris Brezillon's email Subject: Revert "mm: make faultaround produce old ptes" Subject: Revert "mm: disable fault around on emulated access bit architecture" Subject: hugetlb: fix nr_pmds accounting with shared page tables Subject: memcg: mem_cgroup_migrate() may be called with irq disabled Subject: memcg: css_alloc should return an ERR_PTR value on error Subject: mm/swap.c: flush lru pvecs on compound page arrival Subject: mm/hugetlb: clear compound_mapcount when freeing gigantic pages Subject: mm: prevent KASAN false positives in kmemleak Subject: mm, compaction: abort free scanner if split fails Subject: ocfs2: disable BUG assertions in reading blocks Subject: oom, suspend: fix oom_reaper vs. oom_killer_disable race Subject: fs/nilfs2: fix potential underflow in call to crc32_le Subject: tools/vm/slabinfo: fix spelling mistake: "Ocurrences" -> "Occurrences" Subject: mm/page_owner: avoid null pointer dereference Subject: autofs: don't get stuck in a loop if vfs_write() returns an error Subject: init/main.c: fix initcall_blacklisted on ia64, ppc64 and parisc64 [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-06-08 22:33 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-06-08 22:33 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 552 bytes --] 7 fixes, based on c8ae067f2635be0f8c7e5db1bb74b757d623e05b: Subject: mm/hugetlb: fix huge page reserve accounting for private mappings Subject: kasan: change memory hot-add error messages to info messages Subject: revert "mm: memcontrol: fix possible css ref leak on oom" Subject: mm: thp: broken page count after commit aa88b68c Subject: kernel/relay.c: fix potential memory leak Subject: mm: introduce dedicated WQ_MEM_RECLAIM workqueue to do lru_add_drain_all Subject: mm/fadvise.c: do not discard partial pages with POSIX_FADV_DONTNEED [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-06-03 21:51 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-06-03 21:51 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 880 bytes --] 11 fixes, based on 4340fa55298d17049e71c7a34e04647379c269f3: Subject: mm: fix overflow in vm_map_ram() Subject: kdump: fix dmesg gdbmacro to work with record based printk Subject: mm: check the return value of lookup_page_ext for all call sites Subject: reiserfs: avoid uninitialized variable use Subject: memcg: add RCU locking around css_for_each_descendant_pre() in memcg_offline_kmem() Subject: mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup Subject: checkpatch: reduce git commit description style false positives Subject: mm, page_alloc: prevent infinite loop in buffered_rmqueue() Subject: mm, oom_reaper: do not use siglock in try_oom_reaper() Subject: mm, page_alloc: reset zonelist iterator after resetting fair zone allocation policy Subject: mm, page_alloc: recalculate the preferred zoneref if the context can ignore memory policies [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-27 21:26 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-27 21:26 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 1273 bytes --] - late-breaking ocfs2 updates - random bunch of fixes 19 patches, based on dc03c0f9d12d85286d5e3623aa96d5c2a271b8e6: Subject: ocfs2: o2hb: add negotiate timer Subject: ocfs2: o2hb: add NEGO_TIMEOUT message Subject: ocfs2: o2hb: add NEGOTIATE_APPROVE message Subject: ocfs2: o2hb: add some user/debug log Subject: ocfs2: o2hb: don't negotiate if last hb fail Subject: ocfs2: o2hb: fix hb hung time Subject: ocfs2: bump up o2cb network protocol version Subject: direct-io: fix direct write stale data exposure from concurrent buffered read Subject: mm: oom: do not reap task if there are live threads in threadgroup Subject: MAINTAINERS: add kexec_core.c and kexec_file.c Subject: MAINTAINERS: Kdump maintainers update Subject: mm: use early_pfn_to_nid in page_ext_init Subject: mm: use early_pfn_to_nid in register_page_bootmem_info_node Subject: oom_reaper: close race with exiting task Subject: mm: thp: avoid false positive VM_BUG_ON_PAGE in page_move_anon_rmap() Subject: mm/cma: silence warnings due to max() usage Subject: mm/memcontrol.c: fix the margin computation in mem_cgroup_margin() Subject: mm/memcontrol.c: move comments for get_mctgt_type() to proper position Subject: mm: disable DEFERRED_STRUCT_PAGE_INIT on !NO_BOOTMEM [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-26 22:15 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-26 22:15 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 706 bytes --] 10 fixes, based on ea8ea737c46cffa5d0ee74309f81e55a7e5e9c2a: Subject: seqlock: fix raw_read_seqcount_latch() Subject: mm: make CONFIG_DEFERRED_STRUCT_PAGE_INIT depends on !FLATMEM explicitly Subject: mm: kasan: remove unused 'reserved' field from struct kasan_alloc_meta Subject: mm: slub: remove unused virt_to_obj() Subject: ocfs2: fix improper handling of return errno Subject: memcg: fix mem_cgroup_out_of_memory() return value. Subject: mm: oom_reaper: remove some bloat Subject: dma-debug: avoid spinlock recursion when disabling dma-debug Subject: update "mm/zsmalloc: don't fail if can't create debugfs info" Subject: drivers/pinctrl/intel/pinctrl-baytrail.c: fix build with gcc-4.4 [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-23 23:21 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-23 23:21 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 5691 bytes --] - Please have a think about Oleg's "wait/ptrace: assume __WALL if the child is traced". It's a kernel-based workaround for existing userspace issues and is a form of non-back-compatible change. - A few hotfixes - befs cleanups - nilfs2 updates - sys_wait() changes - kexec updates - kdump - scripts/gdb updates - the last of the MM queue - a few other misc things 84 patches, based on 7639dad93a5564579987abded4ec05e3db13659d: Subject: m32r: fix build failure Subject: : ELF/MIPS build fix Subject: mm: memcontrol: fix possible css ref leak on oom Subject: fs/befs/datastream.c:befs_read_datastream(): remove unneeded initialization to NULL Subject: fs/befs/datastream.c:befs_read_lsymlink(): remove unneeded initialization to NULL Subject: fs/befs/datastream.c:befs_find_brun_dblindirect(): remove unneeded initializations to NULL Subject: fs/befs/linuxvfs.c:befs_get_block(): remove unneeded initialization to NULL Subject: fs/befs/linuxvfs.c:befs_iget(): remove unneeded initialization to NULL Subject: fs/befs/linuxvfs.c:befs_iget(): remove unneeded raw_inode initialization to NULL Subject: fs/befs/linuxvfs.c:befs_iget(): remove unneeded befs_nio initialization to NULL Subject: fs/befs/io.c:befs_bread_iaddr(): remove unneeded initialization to NULL Subject: fs/befs/io.c:befs_bread(): remove unneeded initialization to NULL Subject: nilfs2: constify nilfs_sc_operations structures Subject: nilfs2: fix white space issue in nilfs_mount() Subject: nilfs2: remove space before comma Subject: nilfs2: remove FSF mailing address from GPL notices Subject: nilfs2: clean up old e-mail addresses Subject: MAINTAINERS: add web link for nilfs project Subject: nilfs2: clarify permission to replicate the design Subject: nilfs2: get rid of nilfs_mdt_mark_block_dirty() Subject: nilfs2: move cleanup code of metadata file from inode routines Subject: nilfs2: replace __attribute__((packed)) with __packed Subject: nilfs2: add missing line spacing Subject: nilfs2: clean trailing semicolons in macros Subject: nilfs2: do not emit extra newline on nilfs_warning() and nilfs_error() Subject: nilfs2: remove space before semicolon Subject: nilfs2: fix code indent coding style issue Subject: nilfs2: avoid bare use of 'unsigned' Subject: nilfs2: remove unnecessary else after return or break Subject: nilfs2: remove loops of single statement macros Subject: nilfs2: fix block comments Subject: wait/ptrace: assume __WALL if the child is traced Subject: wait: allow sys_waitid() to accept __WNOTHREAD/__WCLONE/__WALL Subject: signal: make oom_flags a bool Subject: kernel/signal.c: convert printk(KERN_<LEVEL> ...) to pr_<level>(...) Subject: signal: move the "sig < SIGRTMIN" check into siginmask(sig) Subject: kernek/fork.c: allocate idle task for a CPU always on its local node Subject: exec: remove the no longer needed remove_arg_zero()->free_arg_page() Subject: kexec: introduce a protection mechanism for the crashkernel reserved memory Subject: kexec: provide arch_kexec_protect(unprotect)_crashkres() Subject: kexec: make a pair of map/unmap reserved pages in error path Subject: kexec: do a cleanup for function kexec_load Subject: s390/kexec: consolidate crash_map/unmap_reserved_pages() and arch_kexec_protect(unprotect)_crashkres() Subject: kdump: fix gdb macros work work with newer and 64-bit kernels Subject: rtsx_usb_ms: use schedule_timeout_idle() in polling loop Subject: drivers/memstick/core/mspro_block: use kmemdup Subject: arch/defconfig: remove CONFIG_RESOURCE_COUNTERS Subject: scripts/gdb: Adjust module reference counter reported by lx-lsmod Subject: scripts/gdb: provide linux constants Subject: scripts/gdb: provide kernel list item generators Subject: scripts/gdb: convert modules usage to lists functions Subject: scripts/gdb: provide exception catching parser Subject: scripts/gdb: support !CONFIG_MODULES gracefully Subject: scripts/gdb: provide a dentry_name VFS path helper Subject: scripts/gdb: add io resource readers Subject: scripts/gdb: add mount point list command Subject: scripts/gdb: add cpu iterators Subject: scripts/gdb: cast CPU numbers to integer Subject: scripts/gdb: add a Radix Tree Parser Subject: scripts/gdb: add documentation example for radix tree Subject: scripts/gdb: add lx_thread_info_by_pid helper Subject: scripts/gdb: improve types abstraction for gdb python scripts Subject: scripts/gdb: fix issue with dmesg.py and python 3.X Subject: scripts/gdb: decode bytestream on dmesg for Python3 Subject: MAINTAINERS: add co-maintainer for scripts/gdb Subject: mm: make mmap_sem for write waits killable for mm syscalls Subject: mm: make vm_mmap killable Subject: mm: make vm_munmap killable Subject: mm, aout: handle vm_brk failures Subject: mm, elf: handle vm_brk error Subject: mm: make vm_brk killable Subject: mm, proc: make clear_refs killable Subject: mm, fork: make dup_mmap wait for mmap_sem for write killable Subject: ipc, shm: make shmem attach/detach wait for mmap_sem killable Subject: vdso: make arch_setup_additional_pages wait for mmap_sem for write killable Subject: coredump: make coredump_wait wait for mmap_sem for write killable Subject: aio: make aio_setup_ring killable Subject: exec: make exec path waiting for mmap_sem killable Subject: prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable Subject: uprobes: wait for mmap_sem for write killable Subject: drm/i915: make i915_gem_mmap_ioctl wait for mmap_sem killable Subject: drm/radeon: make radeon_mn_get wait for mmap_sem killable Subject: drm/amdgpu: make amdgpu_mn_get wait for mmap_sem killable Subject: kgdb: depends on VT [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-20 23:55 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-20 23:55 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 297 bytes --] - the rest of MM - KASAN updates - procfs updates - exit, fork updates - printk updates - lib/ updates - radix-tree testsuite updates - checkpatch updates - kprobes updates - a few other misc bits 162 patches, based on 6eb59af580dcffc6f6982ac8ef6d27a1a5f26b27 [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-20 0:07 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-20 0:07 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 7864 bytes --] - fsnotify fix - poll() timeout fix - a few scripts/ tweaks - debugobjects updates - the (small) ocfs2 queue - Minor fixes to kernel/padata.c - Maybe half of the MM queue 117 patches, based on 2600a46ee0ed57c0e0a382c2a37ebac64d374d20: Subject: fsnotify: avoid spurious EMFILE errors from inotify_init() Subject: time: add missing implementation for timespec64_add_safe() Subject: fs: poll/select/recvmmsg: use timespec64 for timeout events Subject: time: remove timespec_add_safe() Subject: scripts/decode_stacktrace.sh: handle symbols in modules Subject: scripts/spelling.txt: add "fimware" misspelling Subject: scripts/bloat-o-meter: print percent change Subject: debugobjects: make fixup functions return bool instead of int Subject: debugobjects: correct the usage of fixup call results Subject: workqueue: update debugobjects fixup callbacks return type Subject: timer: update debugobjects fixup callbacks return type Subject: rcu: update debugobjects fixup callbacks return type Subject: percpu_counter: update debugobjects fixup callbacks return type Subject: Documentation: update debugobjects doc Subject: debugobjects: insulate non-fixup logic related to static obj from fixup callbacks Subject: ocfs2: fix comment in struct ocfs2_extended_slot Subject: ocfs2: clean up an unused variable 'wants_rotate' in ocfs2_truncate_rec Subject: ocfs2: clean up unused parameter 'count' in o2hb_read_block_input() Subject: ocfs2: clean up an unneeded goto in ocfs2_put_slot() Subject: kernel/padata.c: removed unused code Subject: kernel/padata.c: hide unused functions Subject: mm/slab: fix the theoretical race by holding proper lock Subject: mm/slab: remove BAD_ALIEN_MAGIC again Subject: mm/slab: drain the free slab as much as possible Subject: mm/slab: factor out kmem_cache_node initialization code Subject: mm/slab: clean-up kmem_cache_node setup Subject: mm/slab: don't keep free slabs if free_objects exceeds free_limit Subject: mm/slab: racy access/modify the slab color Subject: mm/slab: make cache_grow() handle the page allocated on arbitrary node Subject: mm/slab: separate cache_grow() to two parts Subject: mm/slab: refill cpu cache through a new slab without holding a node lock Subject: mm/slab: lockless decision to grow cache Subject: mm/slub.c: replace kick_all_cpus_sync() with synchronize_sched() in kmem_cache_shrink() Subject: mm: SLAB freelist randomization Subject: mm: slab: remove ZONE_DMA_FLAG Subject: mm/slub.c: fix sysfs filename in comment Subject: mm/page_ref: use page_ref helper instead of direct modification of _count Subject: mm: rename _count, field of the struct page, to _refcount Subject: compiler.h: add support for malloc attribute Subject: include/linux: apply __malloc attribute Subject: include/linux/nodemask.h: create next_node_in() helper Subject: mm/hugetlb: optimize minimum size (min_size) accounting Subject: mm/hugetlb: introduce hugetlb_bad_size() Subject: arm64: mm: use hugetlb_bad_size() Subject: metag: mm: use hugetlb_bad_size() Subject: powerpc: mm: use hugetlb_bad_size() Subject: tile: mm: use hugetlb_bad_size() Subject: x86: mm: use hugetlb_bad_size() Subject: mm/hugetlb: is_vm_hugetlb_page() can return bool Subject: mm/memory_hotplug: is_mem_section_removable() can return bool Subject: mm/vmalloc.c: is_vmalloc_addr() can return bool Subject: mm/mempolicy.c: vma_migratable() can return bool Subject: mm/memcontrol.c:mem_cgroup_select_victim_node(): clarify comment Subject: mm/page_alloc: remove useless parameter of __free_pages_boot_core Subject: mm/hugetlb.c: use first_memory_node Subject: mm/mempolicy.c:offset_il_node() document and clarify Subject: mm/rmap: replace BUG_ON(anon_vma->degree) with VM_WARN_ON Subject: mm, compaction: wrap calculating first and last pfn of pageblock Subject: mm, compaction: reduce spurious pcplist drains Subject: mm, compaction: skip blocks where isolation fails in async direct compaction Subject: mm/highmem: simplify is_highmem() Subject: mm: uninline page_mapped() Subject: mm/hugetlb: add same zone check in pfn_range_valid_gigantic() Subject: mm/memory_hotplug: add comment to some functions related to memory hotplug Subject: mm/vmstat: add zone range overlapping check Subject: mm/page_owner: add zone range overlapping check Subject: power: add zone range overlapping check Subject: mm/writeback: correct dirty page calculation for highmem Subject: mm/page_alloc: correct highmem memory statistics Subject: mm/highmem: make nr_free_highpages() handles all highmem zones by itself Subject: mm/vmstat: make node_page_state() handles all zones by itself Subject: mm/mmap: kill hook arch_rebalance_pgtables() Subject: mm: update_lru_size warn and reset bad lru_size Subject: mm: update_lru_size do the __mod_zone_page_state Subject: mm: use __SetPageSwapBacked and dont ClearPageSwapBacked Subject: tmpfs: preliminary minor tidyups Subject: tmpfs: mem_cgroup charge fault to vm_mm not current mm Subject: mm: /proc/sys/vm/stat_refresh to force vmstat update Subject: huge mm: move_huge_pmd does not need new_vma Subject: huge pagecache: extend mremap pmd rmap lockout to files Subject: arch: fix has_transparent_hugepage() Subject: memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE Subject: memory_hotplug: introduce memhp_default_state= command line parameter Subject: mm, oom: move GFP_NOFS check to out_of_memory Subject: oom, oom_reaper: try to reap tasks which skip regular OOM killer path Subject: mm, oom_reaper: clear TIF_MEMDIE for all tasks queued for oom_reaper Subject: mm, page_alloc: only check PageCompound for high-order pages Subject: mm, page_alloc: use new PageAnonHead helper in the free page fast path Subject: mm, page_alloc: reduce branches in zone_statistics Subject: mm, page_alloc: inline zone_statistics Subject: mm, page_alloc: inline the fast path of the zonelist iterator Subject: mm, page_alloc: use __dec_zone_state for order-0 page allocation Subject: mm, page_alloc: avoid unnecessary zone lookups during pageblock operations Subject: mm, page_alloc: convert alloc_flags to unsigned Subject: mm, page_alloc: convert nr_fair_skipped to bool Subject: mm, page_alloc: remove unnecessary local variable in get_page_from_freelist Subject: mm, page_alloc: remove unnecessary initialisation in get_page_from_freelist Subject: mm, page_alloc: remove unnecessary initialisation from __alloc_pages_nodemask() Subject: mm, page_alloc: simplify last cpupid reset Subject: mm, page_alloc: move __GFP_HARDWALL modifications out of the fastpath Subject: mm, page_alloc: check once if a zone has isolated pageblocks Subject: mm, page_alloc: shorten the page allocator fast path Subject: mm, page_alloc: reduce cost of fair zone allocation policy retry Subject: mm, page_alloc: shortcut watermark checks for order-0 pages Subject: mm, page_alloc: avoid looking up the first zone in a zonelist twice Subject: mm, page_alloc: remove field from alloc_context Subject: mm, page_alloc: check multiple page fields with a single branch Subject: mm, page_alloc: un-inline the bad part of free_pages_check Subject: mm, page_alloc: pull out side effects from free_pages_check Subject: mm, page_alloc: remove unnecessary variable from free_pcppages_bulk Subject: mm, page_alloc: inline pageblock lookup in page free fast paths Subject: cpuset: use static key better and convert to new API Subject: mm, page_alloc: defer debugging checks of freed pages until a PCP drain Subject: mm, page_alloc: defer debugging checks of pages allocated from the PCP Subject: mm, page_alloc: don't duplicate code in free_pcp_prepare Subject: mm, page_alloc: uninline the bad page part of check_new_page() Subject: mm, page_alloc: restore the original nodemask if the fast path allocation failed [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-12 22:41 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-12 22:41 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 344 bytes --] 4 fixes, based on 422ce5a97570cb8a37d016b6bc2021ae4dac5499: Subject: ocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang Subject: ocfs2: fix posix_acl_create deadlock Subject: ksm: fix conflict between mmput and scan_get_next_rmap_item Subject: mm: thp: calculate the mapcount correctly for THP pages during WP faults [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-09 23:28 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-09 23:28 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 302 bytes --] 3 fixes, based on 44549e8f5eea4e0a41b487b63e616cb089922b99: Subject: Revert "proc/base: make prompt shell start from new line after executing "cat /proc/$pid/wchan"" Subject: zsmalloc: fix zs_can_compact() integer overflow Subject: compiler-gcc: require gcc 4.8 for powerpc __builtin_bswap16() [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2016-05-05 23:21 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2016-05-05 23:21 UTC (permalink / raw) To: Linus Torvalds; +Cc: mm-commits [-- Attachment #1: Type: text/plain, Size: 987 bytes --] 14 fixes, based on c5e0666c5a3ccabdf16bb88451886cdf81849b66: Subject: mm: thp: correct split_huge_pages file permission Subject: mm: memcontrol: let v2 cgroups follow changes in system swappiness Subject: rapidio/mport_cdev: fix uapi type definitions Subject: huge pagecache: mmap_sem is unlocked when truncation splits pmd Subject: mm: update min_free_kbytes from khugepaged after core initialization Subject: mm, cma: prevent nr_isolated_* counters from going negative Subject: MAINTAINERS: fix Rajendra Nayak's address Subject: mm: thp: kvm: fix memory corruption in KVM with THP enabled Subject: mm/zswap: provide unique zpool name Subject: proc: prevent accessing /proc/<PID>/environ until it's ready Subject: modpost: fix module autoloading for OF devices with generic compatible property Subject: mm: fix kcompactd hang during memory offlining Subject: lib/stackdepot: avoid to return 0 handle Subject: byteswap: try to avoid __builtin_constant_p gcc bug [-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --] ^ permalink raw reply [flat|nested] 530+ messages in thread
[parent not found: <20150909153424.3feb1c403a841ab97b2d98ab@linux-foundation.org>]
* Re: incoming [not found] <20150909153424.3feb1c403a841ab97b2d98ab@linux-foundation.org> @ 2015-09-09 23:23 ` Linus Torvalds 2015-09-10 6:47 ` incoming Rasmus Villemoes 0 siblings, 1 reply; 530+ messages in thread From: Linus Torvalds @ 2015-09-09 23:23 UTC (permalink / raw) To: Andrew Morton, Alexey Dobriyan; +Cc: Linux Kernel Mailing List On Wed, Sep 9, 2015 at 3:34 PM, Andrew Morton <akpm@linux-foundation.org> wrote: > Subject: lib/: add parse_integer() (replacement for simple_strto*()) > Subject: parse_integer: add runtime testsuite > Subject: parse-integer: rewrite kstrto*() > Subject: parse_integer: add checkpatch.pl notice > Subject: parse_integer: convert scanf() > Subject: scanf: fix type range overflow > Subject: parse_integer: convert lib/ > Subject: parse_integer: convert mm/ > Subject: parse_integer: convert fs/ > Subject: parse_integer: convert fs/cachefiles/ > Subject: parse_integer: convert ext2, ext4 > Subject: parse_integer: convert fs/ocfs2/ > Subject: parse_integer: convert fs/9p/ > Subject: parse_integer: convert fs/exofs/ No. I'm not taking yet another broken "deprecate old interface, replace it with new-and-improved one, and screw things up in the process". The whole "kstrto*()" thing was a mistake. We had real bugs brought in by the conversion to the "better" interface. The "even betterer" new parse_integer() interface actually looks lik ea real improvement, and talks about some of the brokenness of the old code, and I was really wanting to like it, but then I saw the conversions. The VERY FIRST conversion patch I looked at was buggy. That makes me angry. The whole *AND*ONLY* point of this whole thing was to get rid of bugs, and be a obviously safe interface, and then the first conversion patch proves it wrong. Let me show you: if (isdigit(*str)) { - io_tlb_nslabs = simple_strtoul(str, &str, 0); + str += parse_integer(str, 0, &io_tlb_nslabs); and obviously nobody spent even a *second* asking themselves "what if parse_integer returns an error". The old code didn't fail catastrophically in the error case. The new one does. And yes, parse_integer() really can return an error, even despite that "isdigit(*str)" check. Think about it. Or just read the source code. I really am very tired indeed of these "trivially obvious improvements" that are buggy and actually introduce whole new ways to write buggy code. Yes, the old code could miss an error. But the old code wouldn't then create invalid pointers like the new code does. I'm not thrilled about going through the rest of this sequence, looking for other gotcha's. But I am *really* really tired of this idiotic "let's make up a new interface that gets things right" and then absolutely doesn't get it right at all. This is not just an issue for number parseing - we had similar issues with the completely moronic and misdesigned crap called "strlcpy()", which was introduced for similar reasons, and also caused nasty bugs where the old code was actually correct, and the "converted to better and safer interfaces" code was actually buggy. Mixing the error handling and the string update was a mistake. Although *not* mixing it causes its own set of problems. But whatever the final resolution to this is, I am *not* taking this series. No way, no how. I liked the automatic type-based templating it does, but I *don't* like the breakage that seems to be inevitable in any large-scale conversion from a previously used historical interface. People who implement new and improved interfaces always seem to get that wrong. Linus ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2015-09-09 23:23 ` incoming Linus Torvalds @ 2015-09-10 6:47 ` Rasmus Villemoes 0 siblings, 0 replies; 530+ messages in thread From: Rasmus Villemoes @ 2015-09-10 6:47 UTC (permalink / raw) To: Linus Torvalds; +Cc: Andrew Morton, Alexey Dobriyan, Linux Kernel Mailing List On Thu, Sep 10 2015, Linus Torvalds <torvalds@linux-foundation.org> wrote: > The VERY FIRST conversion patch I looked at was buggy. That makes me > angry. The whole *AND*ONLY* point of this whole thing was to get rid > of bugs, and be a obviously safe interface, and then the first > conversion patch proves it wrong. > > Let me show you: > > if (isdigit(*str)) { > - io_tlb_nslabs = simple_strtoul(str, &str, 0); > + str += parse_integer(str, 0, &io_tlb_nslabs); > > and obviously nobody spent even a *second* asking themselves "what if > parse_integer returns an error". [This is going to sound awfully self-glorifying. Oh well.] I did point that out in another instance (memparse), which I think then got somewhat fixed in a later version. Since Alexey and I seemed to disagree on what guiding principles to use when doing the conversions and a number of other points, I didn't have the energy to go through the entire series, and the discussion died out. http://thread.gmane.org/gmane.linux.kernel/1942623/focus=1944193 > I liked the automatic type-based templating it does, but I *don't* > like the breakage that seems to be inevitable in any large-scale > conversion from a previously used historical interface. My words exactly. Rasmus ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2007-05-02 22:02 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-02 22:02 UTC (permalink / raw) To: Linus Torvalds Cc: Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm So this is what I have lined up for the first mm->2.6.22 batch. I won't be sending it off for another 12-24 hours yet. To give people time for final comment and to give me time to see if it actually works. - A few serial bits. - A few pcmcia bits. - Some of the MM queue. Includes: - An enhancement to /proc/pid/smaps to permit monitoring of a running program's working set. There's another patchset which builds on this quite a lot from Matt Mackall, but it's not quite ready yet. - The SLUB allocator. It's pretty green but I do want to push ahead with this pretty aggressively with a view to replacing slab altogether. If it ends up not working out then we should remove slub altogether again, but I doubt if that will occur. If SLUB isn't in good shape by 2.6.22 we should hide it in Kconfig to prevent people from hitting known problems. It'll remain EXPERIMENTAL. - generic pagetable quicklist management. We have x86_64 and ia64 and sparc64 implementations, but I'll only include David's sparc64 implementation here. I'll send the x86_64 and ia64 implementations through maintainers. - Various random MM bits - Benh's teach-get_unmapped_area-about-MAP_FIXED changes - madvise(MADV_FREE) This means I'm holding back Mel's page allocator work, and Andy's lumpy-reclaim. A shame in a way - I have high hopes for lumpy reclaim against the moveable zone, but these things are not to be done lightly. A few MM things have been held back awaiting subsystem tree merges (probably x86 - I didn't check). - One little security patch - the blackfin architecture - small h8300 update - small alpha update - swsusp updates - m68k bits - cris udpates - Lots of UML updates - v850, xtensa slab-introduce-krealloc.patch at91_cf-minor-fix.patch add-new_id-to-pcmcia-drivers.patch ide-cs-recognize-2gb-compactflash-from-transcend.patch serial-driver-pmc-msp71xx.patch rm9000-serial-driver.patch serial-define-fixed_port-flag-for-serial_core.patch serial-use-resource_size_t-for-serial-port-io-addresses.patch mpsc-serial-driver-tx-locking.patch 8250_pci-fix-pci-must_checks.patch serial-serial_core-use-pr_debug.patch add-apply_to_page_range-which-applies-a-function-to-a-pte-range.patch safer-nr_node_ids-and-nr_node_ids-determination-and-initial.patch use-zvc-counters-to-establish-exact-size-of-dirtyable-pages.patch proper-prototype-for-hugetlb_get_unmapped_area.patch mm-remove-gcc-workaround.patch slab-ensure-cache_alloc_refill-terminates.patch mm-make-read_cache_page-synchronous.patch fs-buffer-dont-pageuptodate-without-page-locked.patch allow-oom_adj-of-saintly-processes.patch introduce-config_has_dma.patch mm-slabc-proper-prototypes.patch add-pfn_valid_within-helper-for-sub-max_order-hole-detection.patch mm-simplify-filemap_nopage.patch add-unitialized_var-macro-for-suppressing-gcc-warnings.patch i386-add-ptep_test_and_clear_dirtyyoung.patch i386-use-pte_update_defer-in-ptep_test_and_clear_dirtyyoung.patch smaps-extract-pmd-walker-from-smaps-code.patch smaps-add-pages-referenced-count-to-smaps.patch smaps-add-clear_refs-file-to-clear-reference.patch readahead-improve-heuristic-detecting-sequential-reads.patch readahead-code-cleanup.patch slab-use-num_possible_cpus-in-enable_cpucache.patch slab-dont-allocate-empty-shared-caches.patch slab-numa-kmem_cache-diet.patch do-not-disable-interrupts-when-reading-min_free_kbytes.patch slab-mark-set_up_list3s-__init.patch cpusets-allow-tif_memdie-threads-to-allocate-anywhere.patch i386-use-page-allocator-to-allocate-thread_info-structure.patch slub-core.patch make-page-private-usable-in-compound-pages-v1.patch optimize-compound_head-by-avoiding-a-shared-page.patch add-virt_to_head_page-and-consolidate-code-in-slab-and-slub.patch slub-fix-object-tracking.patch slub-enable-tracking-of-full-slabs.patch slub-validation-of-slabs-metadata-and-guard-zones.patch slub-add-min_partial.patch slub-add-ability-to-list-alloc--free-callers-per-slab.patch slub-free-slabs-and-sort-partial-slab-lists-in-kmem_cache_shrink.patch slub-remove-object-activities-out-of-checking-functions.patch slub-user-documentation.patch slub-add-slabinfo-tool.patch quicklists-for-page-table-pages.patch quicklist-support-for-sparc64.patch slob-handle-slab_panic-flag.patch include-kern_-constant-in-printk-calls-in-mm-slabc.patch mm-madvise-avoid-exclusive-mmap_sem.patch mm-remove-destroy_dirty_buffers-from-invalidate_bdev.patch mm-optimize-kill_bdev.patch mm-optimize-acorn-partition-truncate.patch slab-allocators-remove-obsolete-slab_must_hwcache_align.patch kmem_cache-simplify-slab-cache-creation.patch slab-allocators-remove-multiple-alignment-specifications.patch fault-injection-fix-failslab-with-config_numa.patch mm-fix-handling-of-panic_on_oom-when-cpusets-are-in-use.patch oom-fix-constraint-deadlock.patch get_unmapped_area-handles-map_fixed-on-powerpc.patch get_unmapped_area-handles-map_fixed-on-alpha.patch get_unmapped_area-handles-map_fixed-on-arm.patch get_unmapped_area-handles-map_fixed-on-frv.patch get_unmapped_area-handles-map_fixed-on-i386.patch get_unmapped_area-handles-map_fixed-on-ia64.patch get_unmapped_area-handles-map_fixed-on-parisc.patch get_unmapped_area-handles-map_fixed-on-sparc64.patch get_unmapped_area-handles-map_fixed-on-x86_64.patch get_unmapped_area-handles-map_fixed-in-hugetlbfs.patch get_unmapped_area-handles-map_fixed-in-generic-code.patch get_unmapped_area-doesnt-need-hugetlbfs-hacks-anymore.patch slab-allocators-remove-slab_debug_initial-flag.patch slab-allocators-remove-slab_ctor_atomic.patch slab-allocators-remove-useless-__gfp_no_grow-flag.patch lazy-freeing-of-memory-through-madv_free.patch restore-madv_dontneed-to-its-original-linux-behaviour.patch hugetlbfs-add-null-check-in-hugetlb_zero_setup.patch slob-fix-page-order-calculation-on-not-4kb-page.patch page-migration-only-migrate-pages-if-allocation-in-the-highest-zone-is-possible.patch return-eperm-not-echild-on-security_task_wait-failure.patch blackfin-arch.patch driver_bfin_serial_core.patch blackfin-on-chip-ethernet-mac-controller-driver.patch blackfin-patch-add-blackfin-support-in-smc91x.patch blackfin-on-chip-rtc-controller-driver.patch blackfin-blackfin-on-chip-spi-controller-driver.patch convert-h8-300-to-generic-timekeeping.patch h8300-generic-irq.patch h8300-add-zimage-support.patch round_up-macro-cleanup-in-arch-alpha-kernel-osf_sysc.patch alpha-fix-bootp-image-creation.patch alpha-prctl-macros.patch srmcons-fix-kmallocgfp_kernel-inside-spinlock.patch arm26-remove-useless-config-option-generic_bust_spinlock.patch fix-refrigerator-vs-thaw_process-race.patch swsusp-use-inline-functions-for-changing-page-flags.patch swsusp-do-not-use-page-flags.patch mm-remove-unused-page-flags.patch swsusp-fix-error-paths-in-snapshot_open.patch swsusp-use-gfp_kernel-for-creating-basic-data-structures.patch freezer-remove-pf_nofreeze-from-handle_initrd.patch swsusp-use-rbtree-for-tracking-allocated-swap.patch freezer-fix-racy-usage-of-try_to_freeze-in-kswapd.patch remove-software_suspend.patch power-management-change-sys-power-disk-display.patch kconfig-mentioneds-hibernation-not-just-swsusp.patch swsusp-fix-snapshot_release.patch swsusp-free-more-memory.patch remove-unused-header-file-arch-m68k-atari-atasoundh.patch spin_lock_unlocked-cleanup-in-arch-m68k.patch remove-unused-header-file-drivers-serial-crisv10h.patch cris-check-for-memory-allocation.patch cris-remove-code-related-to-pre-22-kernel.patch uml-delete-unused-code.patch uml-formatting-fixes.patch uml-host_info-tidying.patch uml-mark-tt-mode-code-for-future-removal.patch uml-print-coredump-limits.patch uml-handle-block-device-hotplug-errors.patch uml-driver-formatting-fixes.patch uml-driver-formatting-fixes-fix.patch uml-network-interface-hotplug-error-handling.patch array_size-check-for-type.patch uml-move-sigio-testing-to-sigioc.patch uml-create-archh.patch uml-create-as-layouth.patch uml-move-remaining-useful-contents-of-user_utilh.patch uml-remove-user_utilh.patch uml-add-missing-__init-declarations.patch remove-unused-header-file-arch-um-kernel-tt-include-mode_kern-tth.patch uml-improve-checking-and-diagnostics-of-ethernet-macs.patch uml-eliminate-temporary-buffer-in-eth_configure.patch uml-replace-one-element-array-with-zero-element-array.patch uml-fix-umid-in-xterm-titles.patch uml-speed-up-exec.patch uml-no-locking-needed-in-tlsc.patch uml-tidy-processc.patch uml-remove-page_size.patch uml-kernel_thread-shouldnt-panic.patch uml-tidy-fault-code.patch uml-kernel-segfaults-should-dump-proper-registers.patch uml-comment-early-boot-locking.patch uml-irq-locking-commentary.patch uml-delete-host_frame_size.patch uml-drivers-get-release-methods.patch uml-dump-registers-on-ptrace-or-wait-failure.patch uml-speed-up-page-table-walking.patch uml-remove-unused-x86_64-code.patch uml-start-fixing-os_read_file-and-os_write_file.patch uml-tidy-libc-code.patch uml-convert-libc-layer-to-call-read-and-write.patch uml-batch-i-o-requests.patch uml-send-pointers-instead-of-structures-to-i-o-thread.patch uml-send-pointers-instead-of-structures-to-i-o-thread-fix.patch uml-dump-core-on-panic.patch uml-dont-try-to-handle-signals-on-initial-process-stack.patch uml-change-remaining-callers-of-os_read_write_file.patch uml-formatting-fixes-around-os_read_write_file-callers.patch uml-remove-debugging-remnants.patch uml-rename-os_read_write_file_k-back-to-os_read_write_file.patch uml-aio-deadlock-avoidance.patch uml-speed-page-fault-path.patch uml-eliminate-a-piece-of-debugging-code.patch uml-more-page-fault-path-trimming.patch uml-only-flush-areas-covered-by-vma.patch uml-out-of-tmpfs-space-error-clarification.patch uml-virtualized-time-fix.patch uml-fix-prototypes.patch v850-generic-timekeeping-conversion.patch xtensa-strlcpy-is-smart-enough.patch ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2007-05-02 22:02 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-02 22:02 UTC (permalink / raw) To: Linus Torvalds Cc: Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm So this is what I have lined up for the first mm->2.6.22 batch. I won't be sending it off for another 12-24 hours yet. To give people time for final comment and to give me time to see if it actually works. - A few serial bits. - A few pcmcia bits. - Some of the MM queue. Includes: - An enhancement to /proc/pid/smaps to permit monitoring of a running program's working set. There's another patchset which builds on this quite a lot from Matt Mackall, but it's not quite ready yet. - The SLUB allocator. It's pretty green but I do want to push ahead with this pretty aggressively with a view to replacing slab altogether. If it ends up not working out then we should remove slub altogether again, but I doubt if that will occur. If SLUB isn't in good shape by 2.6.22 we should hide it in Kconfig to prevent people from hitting known problems. It'll remain EXPERIMENTAL. - generic pagetable quicklist management. We have x86_64 and ia64 and sparc64 implementations, but I'll only include David's sparc64 implementation here. I'll send the x86_64 and ia64 implementations through maintainers. - Various random MM bits - Benh's teach-get_unmapped_area-about-MAP_FIXED changes - madvise(MADV_FREE) This means I'm holding back Mel's page allocator work, and Andy's lumpy-reclaim. A shame in a way - I have high hopes for lumpy reclaim against the moveable zone, but these things are not to be done lightly. A few MM things have been held back awaiting subsystem tree merges (probably x86 - I didn't check). - One little security patch - the blackfin architecture - small h8300 update - small alpha update - swsusp updates - m68k bits - cris udpates - Lots of UML updates - v850, xtensa slab-introduce-krealloc.patch at91_cf-minor-fix.patch add-new_id-to-pcmcia-drivers.patch ide-cs-recognize-2gb-compactflash-from-transcend.patch serial-driver-pmc-msp71xx.patch rm9000-serial-driver.patch serial-define-fixed_port-flag-for-serial_core.patch serial-use-resource_size_t-for-serial-port-io-addresses.patch mpsc-serial-driver-tx-locking.patch 8250_pci-fix-pci-must_checks.patch serial-serial_core-use-pr_debug.patch add-apply_to_page_range-which-applies-a-function-to-a-pte-range.patch safer-nr_node_ids-and-nr_node_ids-determination-and-initial.patch use-zvc-counters-to-establish-exact-size-of-dirtyable-pages.patch proper-prototype-for-hugetlb_get_unmapped_area.patch mm-remove-gcc-workaround.patch slab-ensure-cache_alloc_refill-terminates.patch mm-make-read_cache_page-synchronous.patch fs-buffer-dont-pageuptodate-without-page-locked.patch allow-oom_adj-of-saintly-processes.patch introduce-config_has_dma.patch mm-slabc-proper-prototypes.patch add-pfn_valid_within-helper-for-sub-max_order-hole-detection.patch mm-simplify-filemap_nopage.patch add-unitialized_var-macro-for-suppressing-gcc-warnings.patch i386-add-ptep_test_and_clear_dirtyyoung.patch i386-use-pte_update_defer-in-ptep_test_and_clear_dirtyyoung.patch smaps-extract-pmd-walker-from-smaps-code.patch smaps-add-pages-referenced-count-to-smaps.patch smaps-add-clear_refs-file-to-clear-reference.patch readahead-improve-heuristic-detecting-sequential-reads.patch readahead-code-cleanup.patch slab-use-num_possible_cpus-in-enable_cpucache.patch slab-dont-allocate-empty-shared-caches.patch slab-numa-kmem_cache-diet.patch do-not-disable-interrupts-when-reading-min_free_kbytes.patch slab-mark-set_up_list3s-__init.patch cpusets-allow-tif_memdie-threads-to-allocate-anywhere.patch i386-use-page-allocator-to-allocate-thread_info-structure.patch slub-core.patch make-page-private-usable-in-compound-pages-v1.patch optimize-compound_head-by-avoiding-a-shared-page.patch add-virt_to_head_page-and-consolidate-code-in-slab-and-slub.patch slub-fix-object-tracking.patch slub-enable-tracking-of-full-slabs.patch slub-validation-of-slabs-metadata-and-guard-zones.patch slub-add-min_partial.patch slub-add-ability-to-list-alloc--free-callers-per-slab.patch slub-free-slabs-and-sort-partial-slab-lists-in-kmem_cache_shrink.patch slub-remove-object-activities-out-of-checking-functions.patch slub-user-documentation.patch slub-add-slabinfo-tool.patch quicklists-for-page-table-pages.patch quicklist-support-for-sparc64.patch slob-handle-slab_panic-flag.patch include-kern_-constant-in-printk-calls-in-mm-slabc.patch mm-madvise-avoid-exclusive-mmap_sem.patch mm-remove-destroy_dirty_buffers-from-invalidate_bdev.patch mm-optimize-kill_bdev.patch mm-optimize-acorn-partition-truncate.patch slab-allocators-remove-obsolete-slab_must_hwcache_align.patch kmem_cache-simplify-slab-cache-creation.patch slab-allocators-remove-multiple-alignment-specifications.patch fault-injection-fix-failslab-with-config_numa.patch mm-fix-handling-of-panic_on_oom-when-cpusets-are-in-use.patch oom-fix-constraint-deadlock.patch get_unmapped_area-handles-map_fixed-on-powerpc.patch get_unmapped_area-handles-map_fixed-on-alpha.patch get_unmapped_area-handles-map_fixed-on-arm.patch get_unmapped_area-handles-map_fixed-on-frv.patch get_unmapped_area-handles-map_fixed-on-i386.patch get_unmapped_area-handles-map_fixed-on-ia64.patch get_unmapped_area-handles-map_fixed-on-parisc.patch get_unmapped_area-handles-map_fixed-on-sparc64.patch get_unmapped_area-handles-map_fixed-on-x86_64.patch get_unmapped_area-handles-map_fixed-in-hugetlbfs.patch get_unmapped_area-handles-map_fixed-in-generic-code.patch get_unmapped_area-doesnt-need-hugetlbfs-hacks-anymore.patch slab-allocators-remove-slab_debug_initial-flag.patch slab-allocators-remove-slab_ctor_atomic.patch slab-allocators-remove-useless-__gfp_no_grow-flag.patch lazy-freeing-of-memory-through-madv_free.patch restore-madv_dontneed-to-its-original-linux-behaviour.patch hugetlbfs-add-null-check-in-hugetlb_zero_setup.patch slob-fix-page-order-calculation-on-not-4kb-page.patch page-migration-only-migrate-pages-if-allocation-in-the-highest-zone-is-possible.patch return-eperm-not-echild-on-security_task_wait-failure.patch blackfin-arch.patch driver_bfin_serial_core.patch blackfin-on-chip-ethernet-mac-controller-driver.patch blackfin-patch-add-blackfin-support-in-smc91x.patch blackfin-on-chip-rtc-controller-driver.patch blackfin-blackfin-on-chip-spi-controller-driver.patch convert-h8-300-to-generic-timekeeping.patch h8300-generic-irq.patch h8300-add-zimage-support.patch round_up-macro-cleanup-in-arch-alpha-kernel-osf_sysc.patch alpha-fix-bootp-image-creation.patch alpha-prctl-macros.patch srmcons-fix-kmallocgfp_kernel-inside-spinlock.patch arm26-remove-useless-config-option-generic_bust_spinlock.patch fix-refrigerator-vs-thaw_process-race.patch swsusp-use-inline-functions-for-changing-page-flags.patch swsusp-do-not-use-page-flags.patch mm-remove-unused-page-flags.patch swsusp-fix-error-paths-in-snapshot_open.patch swsusp-use-gfp_kernel-for-creating-basic-data-structures.patch freezer-remove-pf_nofreeze-from-handle_initrd.patch swsusp-use-rbtree-for-tracking-allocated-swap.patch freezer-fix-racy-usage-of-try_to_freeze-in-kswapd.patch remove-software_suspend.patch power-management-change-sys-power-disk-display.patch kconfig-mentioneds-hibernation-not-just-swsusp.patch swsusp-fix-snapshot_release.patch swsusp-free-more-memory.patch remove-unused-header-file-arch-m68k-atari-atasoundh.patch spin_lock_unlocked-cleanup-in-arch-m68k.patch remove-unused-header-file-drivers-serial-crisv10h.patch cris-check-for-memory-allocation.patch cris-remove-code-related-to-pre-22-kernel.patch uml-delete-unused-code.patch uml-formatting-fixes.patch uml-host_info-tidying.patch uml-mark-tt-mode-code-for-future-removal.patch uml-print-coredump-limits.patch uml-handle-block-device-hotplug-errors.patch uml-driver-formatting-fixes.patch uml-driver-formatting-fixes-fix.patch uml-network-interface-hotplug-error-handling.patch array_size-check-for-type.patch uml-move-sigio-testing-to-sigioc.patch uml-create-archh.patch uml-create-as-layouth.patch uml-move-remaining-useful-contents-of-user_utilh.patch uml-remove-user_utilh.patch uml-add-missing-__init-declarations.patch remove-unused-header-file-arch-um-kernel-tt-include-mode_kern-tth.patch uml-improve-checking-and-diagnostics-of-ethernet-macs.patch uml-eliminate-temporary-buffer-in-eth_configure.patch uml-replace-one-element-array-with-zero-element-array.patch uml-fix-umid-in-xterm-titles.patch uml-speed-up-exec.patch uml-no-locking-needed-in-tlsc.patch uml-tidy-processc.patch uml-remove-page_size.patch uml-kernel_thread-shouldnt-panic.patch uml-tidy-fault-code.patch uml-kernel-segfaults-should-dump-proper-registers.patch uml-comment-early-boot-locking.patch uml-irq-locking-commentary.patch uml-delete-host_frame_size.patch uml-drivers-get-release-methods.patch uml-dump-registers-on-ptrace-or-wait-failure.patch uml-speed-up-page-table-walking.patch uml-remove-unused-x86_64-code.patch uml-start-fixing-os_read_file-and-os_write_file.patch uml-tidy-libc-code.patch uml-convert-libc-layer-to-call-read-and-write.patch uml-batch-i-o-requests.patch uml-send-pointers-instead-of-structures-to-i-o-thread.patch uml-send-pointers-instead-of-structures-to-i-o-thread-fix.patch uml-dump-core-on-panic.patch uml-dont-try-to-handle-signals-on-initial-process-stack.patch uml-change-remaining-callers-of-os_read_write_file.patch uml-formatting-fixes-around-os_read_write_file-callers.patch uml-remove-debugging-remnants.patch uml-rename-os_read_write_file_k-back-to-os_read_write_file.patch uml-aio-deadlock-avoidance.patch uml-speed-page-fault-path.patch uml-eliminate-a-piece-of-debugging-code.patch uml-more-page-fault-path-trimming.patch uml-only-flush-areas-covered-by-vma.patch uml-out-of-tmpfs-space-error-clarification.patch uml-virtualized-time-fix.patch uml-fix-prototypes.patch v850-generic-timekeeping-conversion.patch xtensa-strlcpy-is-smart-enough.patch -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-02 22:02 ` incoming Andrew Morton @ 2007-05-02 22:31 ` Benjamin Herrenschmidt -1 siblings, 0 replies; 530+ messages in thread From: Benjamin Herrenschmidt @ 2007-05-02 22:31 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, linux-kernel, linux-mm On Wed, 2007-05-02 at 15:02 -0700, Andrew Morton wrote: > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > sending it off for another 12-24 hours yet. To give people time for final > comment and to give me time to see if it actually works. Thanks. I have some powerpc bits that depend on that stuff that will go through Paulus after these show up in git and I've rebased. Cheers, Ben. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-02 22:31 ` Benjamin Herrenschmidt 0 siblings, 0 replies; 530+ messages in thread From: Benjamin Herrenschmidt @ 2007-05-02 22:31 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, linux-kernel, linux-mm On Wed, 2007-05-02 at 15:02 -0700, Andrew Morton wrote: > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > sending it off for another 12-24 hours yet. To give people time for final > comment and to give me time to see if it actually works. Thanks. I have some powerpc bits that depend on that stuff that will go through Paulus after these show up in git and I've rebased. Cheers, Ben. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-02 22:02 ` incoming Andrew Morton @ 2007-05-03 7:55 ` Russell King -1 siblings, 0 replies; 530+ messages in thread From: Russell King @ 2007-05-03 7:55 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > sending it off for another 12-24 hours yet. To give people time for final > comment and to give me time to see if it actually works. I assume you're going to update this list with my comments I sent yesterday? -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-03 7:55 ` Russell King 0 siblings, 0 replies; 530+ messages in thread From: Russell King @ 2007-05-03 7:55 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > sending it off for another 12-24 hours yet. To give people time for final > comment and to give me time to see if it actually works. I assume you're going to update this list with my comments I sent yesterday? -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-03 7:55 ` incoming Russell King @ 2007-05-03 8:05 ` Andrew Morton -1 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-03 8:05 UTC (permalink / raw) To: Russell King Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Thu, 3 May 2007 08:55:43 +0100 Russell King <rmk+lkml@arm.linux.org.uk> wrote: > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > > sending it off for another 12-24 hours yet. To give people time for final > > comment and to give me time to see if it actually works. > > I assume you're going to update this list with my comments I sent > yesterday? > Serial drivers? Well you saw me drop a bunch of them. I now have: serial-driver-pmc-msp71xx.patch rm9000-serial-driver.patch serial-define-fixed_port-flag-for-serial_core.patch mpsc-serial-driver-tx-locking.patch serial-serial_core-use-pr_debug.patch I'll also be holding off on MADV_FREE - Nick has some performance things to share and I'm assuming they're not as good as he'd like. ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-03 8:05 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-03 8:05 UTC (permalink / raw) To: Russell King Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Thu, 3 May 2007 08:55:43 +0100 Russell King <rmk+lkml@arm.linux.org.uk> wrote: > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > So this is what I have lined up for the first mm->2.6.22 batch. I won't be > > sending it off for another 12-24 hours yet. To give people time for final > > comment and to give me time to see if it actually works. > > I assume you're going to update this list with my comments I sent > yesterday? > Serial drivers? Well you saw me drop a bunch of them. I now have: serial-driver-pmc-msp71xx.patch rm9000-serial-driver.patch serial-define-fixed_port-flag-for-serial_core.patch mpsc-serial-driver-tx-locking.patch serial-serial_core-use-pr_debug.patch I'll also be holding off on MADV_FREE - Nick has some performance things to share and I'm assuming they're not as good as he'd like. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-02 22:02 ` incoming Andrew Morton @ 2007-05-04 13:37 ` Greg KH -1 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 13:37 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > - One little security patch Care to cc: linux-stable with it so we can do a new 2.6.21 release with it if needed? thanks, greg k-h ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 13:37 ` Greg KH 0 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 13:37 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > - One little security patch Care to cc: linux-stable with it so we can do a new 2.6.21 release with it if needed? thanks, greg k-h -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-04 13:37 ` incoming Greg KH @ 2007-05-04 16:14 ` Andrew Morton -1 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-04 16:14 UTC (permalink / raw) To: Greg KH Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Roland McGrath, Stephen Smalley On Fri, 4 May 2007 06:37:28 -0700 Greg KH <greg@kroah.com> wrote: > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > - One little security patch > > Care to cc: linux-stable with it so we can do a new 2.6.21 release with > it if needed? > Ah. The patch affects security code, but it doesn't actually address any insecurity. I didn't think it was needed for -stable? From: Roland McGrath <roland@redhat.com> wait* syscalls return -ECHILD even when an individual PID of a live child was requested explicitly, when security_task_wait denies the operation. This means that something like a broken SELinux policy can produce an unexpected failure that looks just like a bug with wait or ptrace or something. This patch makes do_wait return -EACCES (or other appropriate error returned from security_task_wait() instead of -ECHILD if some children were ruled out solely because security_task_wait failed. [jmorris@namei.org: switch error code to EACCES] Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Chris Wright <chrisw@sous-sol.org> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/exit.c | 17 +++++++++++++++-- 1 files changed, 15 insertions(+), 2 deletions(-) diff -puN kernel/exit.c~return-eperm-not-echild-on-security_task_wait-failure kernel/exit.c --- a/kernel/exit.c~return-eperm-not-echild-on-security_task_wait-failure +++ a/kernel/exit.c @@ -1033,6 +1033,8 @@ asmlinkage void sys_exit_group(int error static int eligible_child(pid_t pid, int options, struct task_struct *p) { + int err; + if (pid > 0) { if (p->pid != pid) return 0; @@ -1066,8 +1068,9 @@ static int eligible_child(pid_t pid, int if (delay_group_leader(p)) return 2; - if (security_task_wait(p)) - return 0; + err = security_task_wait(p); + if (err) + return err; return 1; } @@ -1449,6 +1452,7 @@ static long do_wait(pid_t pid, int optio DECLARE_WAITQUEUE(wait, current); struct task_struct *tsk; int flag, retval; + int allowed, denied; add_wait_queue(¤t->signal->wait_chldexit,&wait); repeat: @@ -1457,6 +1461,7 @@ repeat: * match our criteria, even if we are not able to reap it yet. */ flag = 0; + allowed = denied = 0; current->state = TASK_INTERRUPTIBLE; read_lock(&tasklist_lock); tsk = current; @@ -1472,6 +1477,12 @@ repeat: if (!ret) continue; + if (unlikely(ret < 0)) { + denied = ret; + continue; + } + allowed = 1; + switch (p->state) { case TASK_TRACED: /* @@ -1570,6 +1581,8 @@ check_continued: goto repeat; } retval = -ECHILD; + if (unlikely(denied) && !allowed) + retval = denied; end: current->state = TASK_RUNNING; remove_wait_queue(¤t->signal->wait_chldexit,&wait); _ ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 16:14 ` Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2007-05-04 16:14 UTC (permalink / raw) To: Greg KH Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Roland McGrath, Stephen Smalley On Fri, 4 May 2007 06:37:28 -0700 Greg KH <greg@kroah.com> wrote: > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > - One little security patch > > Care to cc: linux-stable with it so we can do a new 2.6.21 release with > it if needed? > Ah. The patch affects security code, but it doesn't actually address any insecurity. I didn't think it was needed for -stable? From: Roland McGrath <roland@redhat.com> wait* syscalls return -ECHILD even when an individual PID of a live child was requested explicitly, when security_task_wait denies the operation. This means that something like a broken SELinux policy can produce an unexpected failure that looks just like a bug with wait or ptrace or something. This patch makes do_wait return -EACCES (or other appropriate error returned from security_task_wait() instead of -ECHILD if some children were ruled out solely because security_task_wait failed. [jmorris@namei.org: switch error code to EACCES] Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Chris Wright <chrisw@sous-sol.org> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- kernel/exit.c | 17 +++++++++++++++-- 1 files changed, 15 insertions(+), 2 deletions(-) diff -puN kernel/exit.c~return-eperm-not-echild-on-security_task_wait-failure kernel/exit.c --- a/kernel/exit.c~return-eperm-not-echild-on-security_task_wait-failure +++ a/kernel/exit.c @@ -1033,6 +1033,8 @@ asmlinkage void sys_exit_group(int error static int eligible_child(pid_t pid, int options, struct task_struct *p) { + int err; + if (pid > 0) { if (p->pid != pid) return 0; @@ -1066,8 +1068,9 @@ static int eligible_child(pid_t pid, int if (delay_group_leader(p)) return 2; - if (security_task_wait(p)) - return 0; + err = security_task_wait(p); + if (err) + return err; return 1; } @@ -1449,6 +1452,7 @@ static long do_wait(pid_t pid, int optio DECLARE_WAITQUEUE(wait, current); struct task_struct *tsk; int flag, retval; + int allowed, denied; add_wait_queue(¤t->signal->wait_chldexit,&wait); repeat: @@ -1457,6 +1461,7 @@ repeat: * match our criteria, even if we are not able to reap it yet. */ flag = 0; + allowed = denied = 0; current->state = TASK_INTERRUPTIBLE; read_lock(&tasklist_lock); tsk = current; @@ -1472,6 +1477,12 @@ repeat: if (!ret) continue; + if (unlikely(ret < 0)) { + denied = ret; + continue; + } + allowed = 1; + switch (p->state) { case TASK_TRACED: /* @@ -1570,6 +1581,8 @@ check_continued: goto repeat; } retval = -ECHILD; + if (unlikely(denied) && !allowed) + retval = denied; end: current->state = TASK_RUNNING; remove_wait_queue(¤t->signal->wait_chldexit,&wait); _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-04 16:14 ` incoming Andrew Morton @ 2007-05-04 17:02 ` Greg KH -1 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 17:02 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Roland McGrath, Stephen Smalley On Fri, May 04, 2007 at 09:14:34AM -0700, Andrew Morton wrote: > On Fri, 4 May 2007 06:37:28 -0700 Greg KH <greg@kroah.com> wrote: > > > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > > - One little security patch > > > > Care to cc: linux-stable with it so we can do a new 2.6.21 release with > > it if needed? > > > > Ah. The patch affects security code, but it doesn't actually address any > insecurity. I didn't think it was needed for -stable? Ah, ok, I read "security" as fixing a insecure problem, my mistake :) thanks, greg k-h ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 17:02 ` Greg KH 0 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 17:02 UTC (permalink / raw) To: Andrew Morton Cc: Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Roland McGrath, Stephen Smalley On Fri, May 04, 2007 at 09:14:34AM -0700, Andrew Morton wrote: > On Fri, 4 May 2007 06:37:28 -0700 Greg KH <greg@kroah.com> wrote: > > > On Wed, May 02, 2007 at 03:02:52PM -0700, Andrew Morton wrote: > > > - One little security patch > > > > Care to cc: linux-stable with it so we can do a new 2.6.21 release with > > it if needed? > > > > Ah. The patch affects security code, but it doesn't actually address any > insecurity. I didn't think it was needed for -stable? Ah, ok, I read "security" as fixing a insecure problem, my mistake :) thanks, greg k-h -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-04 16:14 ` incoming Andrew Morton @ 2007-05-04 18:57 ` Roland McGrath -1 siblings, 0 replies; 530+ messages in thread From: Roland McGrath @ 2007-05-04 18:57 UTC (permalink / raw) To: Andrew Morton Cc: Greg KH, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley > Ah. The patch affects security code, but it doesn't actually address any > insecurity. I didn't think it was needed for -stable? I would not recommend it for -stable. It is an ABI change for the case of a security refusal. Thanks, Roland ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 18:57 ` Roland McGrath 0 siblings, 0 replies; 530+ messages in thread From: Roland McGrath @ 2007-05-04 18:57 UTC (permalink / raw) To: Andrew Morton Cc: Greg KH, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley > Ah. The patch affects security code, but it doesn't actually address any > insecurity. I didn't think it was needed for -stable? I would not recommend it for -stable. It is an ABI change for the case of a security refusal. Thanks, Roland -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-04 18:57 ` incoming Roland McGrath @ 2007-05-04 19:24 ` Greg KH -1 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 19:24 UTC (permalink / raw) To: Roland McGrath Cc: Andrew Morton, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley On Fri, May 04, 2007 at 11:57:21AM -0700, Roland McGrath wrote: > > Ah. The patch affects security code, but it doesn't actually address any > > insecurity. I didn't think it was needed for -stable? > > I would not recommend it for -stable. > It is an ABI change for the case of a security refusal. ABI changes are not a problem for -stable, so don't let that stop anyone :) thanks, greg k-h ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 19:24 ` Greg KH 0 siblings, 0 replies; 530+ messages in thread From: Greg KH @ 2007-05-04 19:24 UTC (permalink / raw) To: Roland McGrath Cc: Andrew Morton, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley On Fri, May 04, 2007 at 11:57:21AM -0700, Roland McGrath wrote: > > Ah. The patch affects security code, but it doesn't actually address any > > insecurity. I didn't think it was needed for -stable? > > I would not recommend it for -stable. > It is an ABI change for the case of a security refusal. ABI changes are not a problem for -stable, so don't let that stop anyone :) thanks, greg k-h -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2007-05-04 19:24 ` incoming Greg KH @ 2007-05-04 19:29 ` Roland McGrath -1 siblings, 0 replies; 530+ messages in thread From: Roland McGrath @ 2007-05-04 19:29 UTC (permalink / raw) To: Greg KH Cc: Andrew Morton, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley > ABI changes are not a problem for -stable, so don't let that stop anyone > :) In fact this is the harmless sort (changes only the error code of a failure case) that might actually go in if there were any important reason. But the smiley stands. Thanks, Roland ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming @ 2007-05-04 19:29 ` Roland McGrath 0 siblings, 0 replies; 530+ messages in thread From: Roland McGrath @ 2007-05-04 19:29 UTC (permalink / raw) To: Greg KH Cc: Andrew Morton, Linus Torvalds, Hugh Dickins, Christoph Lameter, David S. Miller, Andi Kleen, Luck, Tony, Rik van Riel, Benjamin Herrenschmidt, linux-kernel, linux-mm, Stephen Smalley > ABI changes are not a problem for -stable, so don't let that stop anyone > :) In fact this is the harmless sort (changes only the error code of a failure case) that might actually go in if there were any important reason. But the smiley stands. Thanks, Roland -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2006-10-20 21:39 Andrew Morton 2006-10-20 22:31 ` incoming Alan Cox 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2006-10-20 21:39 UTC (permalink / raw) To: Jeff Garzik; +Cc: linux-ide, Tejun Heo, Alan Cox I have 12 ata patches here - I'm not sure that Tejun's ones are the latest version, but I'll just send the whole lot as-is, see what happens... ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2006-10-20 21:39 incoming Andrew Morton @ 2006-10-20 22:31 ` Alan Cox 0 siblings, 0 replies; 530+ messages in thread From: Alan Cox @ 2006-10-20 22:31 UTC (permalink / raw) To: Andrew Morton; +Cc: Jeff Garzik, linux-ide, Tejun Heo Ar Gwe, 2006-10-20 am 14:39 -0700, ysgrifennodd Andrew Morton: > I have 12 ata patches here - I'm not sure that Tejun's ones are the latest > version, but I'll just send the whole lot as-is, see what happens... Looks fine with respect to my bits and Tejun's. Now Tejun's polling identify is in I'll have a pile of patches next week as most PATA controllers want to use this. Alan ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2005-04-12 10:23 Andrew Morton 2005-04-12 11:02 ` incoming David Vrabel ` (3 more replies) 0 siblings, 4 replies; 530+ messages in thread From: Andrew Morton @ 2005-04-12 10:23 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-kernel As the commits list probably isn't working at present I'll cc linux-kernel on this lot. Fairly cruel, sorry, but I don't like the idea of people not knowing what's hitting the main tree. This is the first live test of Linus's git-importing ability. I'm about to disappear for 1.5 weeks - hope we'll still have a kernel left when I get back. - As we're still a fair way from 2.6.12 and things are still backing up, it's a relatively large update. - Various arch updates - Big x86_64 update, as discussed - decent-sized ppc32, ppc64 updates - big infiniband update - very nearly the last batch of u32->pm_message_t conversions. Some other bits of this will be sitting out in subsystem trees - this is just the stuff which doesn't overlap. - the important fixes from the md, nfs4 queues - other random fixes and things we probably want to have in 2.6.12. - I'd draw especial Linus attention to: "fix crash in entry.S restore_all" and "pci enumeration on ixp2000: overflow in kernel/resource.c" ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 10:23 incoming Andrew Morton @ 2005-04-12 11:02 ` David Vrabel 2005-04-12 11:10 ` incoming Andrew Morton 2005-04-12 14:38 ` incoming Chris Friesen ` (2 subsequent siblings) 3 siblings, 1 reply; 530+ messages in thread From: David Vrabel @ 2005-04-12 11:02 UTC (permalink / raw) To: Andrew Morton; +Cc: Linus Torvalds, linux-kernel Andrew Morton wrote: > As the commits list probably isn't working at present I'll cc linux-kernel > on this lot. Fairly cruel, sorry, but I don't like the idea of people not > knowing what's hitting the main tree. Is there any chance that in the future that these patch sets get posted all to one thread? Perhaps as a reply to a summary? 1 thread to ignore is preferable to 198. David Vrabel ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 11:02 ` incoming David Vrabel @ 2005-04-12 11:10 ` Andrew Morton 2005-04-12 11:33 ` incoming David Vrabel ` (2 more replies) 0 siblings, 3 replies; 530+ messages in thread From: Andrew Morton @ 2005-04-12 11:10 UTC (permalink / raw) To: David Vrabel; +Cc: torvalds, linux-kernel David Vrabel <dvrabel@cantab.net> wrote: > > Is there any chance that in the future that these patch sets get posted > all to one thread? I never got around to setting that up, plus the Subject:s pretty quickly become invisible when they're indented 198 columns in GUI MUAs. Hopefully we'll have the commits list running next time... ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 11:10 ` incoming Andrew Morton @ 2005-04-12 11:33 ` David Vrabel 2005-04-12 18:31 ` incoming Matthias Urlichs 2005-04-16 8:59 ` incoming Paul Jackson 2 siblings, 0 replies; 530+ messages in thread From: David Vrabel @ 2005-04-12 11:33 UTC (permalink / raw) To: Andrew Morton; +Cc: torvalds, linux-kernel Andrew Morton wrote: > David Vrabel <dvrabel@cantab.net> wrote: > >>Is there any chance that in the future that these patch sets get posted >> all to one thread? > > I never got around to setting that up, plus the Subject:s pretty quickly > become invisible when they're indented 198 columns in GUI MUAs. I meant something like this: [patch 000/100] Foo-ize the baz. [patch 001/100] Frob the baz [patch 002/100] baz cleanups [patch 003/100] apply foo-ization to baz Rather than [patch 000/100] Foo-ize the baz. [patch 001/100] Frob the baz [patch 002/100] baz cleanups [patch 003/100] apply foo-ization to baz Which would (as you rightly pointed out) be ludicrous. i.e., all the patches are replys to the summary. David Vrabel ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 11:10 ` incoming Andrew Morton 2005-04-12 11:33 ` incoming David Vrabel @ 2005-04-12 18:31 ` Matthias Urlichs 2005-04-16 8:59 ` incoming Paul Jackson 2 siblings, 0 replies; 530+ messages in thread From: Matthias Urlichs @ 2005-04-12 18:31 UTC (permalink / raw) To: linux-kernel Hi, Andrew Morton schrub am Tue, 12 Apr 2005 04:10:45 -0700: > David Vrabel <dvrabel@cantab.net> wrote: >> >> Is there any chance that in the future that these patch sets get posted >> all to one thread? > > I never got around to setting that up, plus the Subject:s pretty quickly > become invisible when they're indented 198 columns in GUI MUAs. > Umm, what stops you from letting all the parts refer to part zero, instead of part n-1? -- Matthias Urlichs | {M:U} IT Design @ m-u-it.de | smurf@smurf.noris.de ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 11:10 ` incoming Andrew Morton 2005-04-12 11:33 ` incoming David Vrabel 2005-04-12 18:31 ` incoming Matthias Urlichs @ 2005-04-16 8:59 ` Paul Jackson 2 siblings, 0 replies; 530+ messages in thread From: Paul Jackson @ 2005-04-16 8:59 UTC (permalink / raw) To: Andrew Morton; +Cc: dvrabel, torvalds, linux-kernel Andrew wrote: > I never got around to setting that up, plus the Subject:s pretty quickly > become invisible when they're indented 198 columns in GUI MUAs. My sendpatchset tool should be good for this. It sends all but the first message are sent in "Reference" to, and "In-Reply-To" the first message. http://www.speakeasy.org/~pj99/sgi/sendpatchset I use it when sending out multiple patches in sequence from a quilt repository. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@engr.sgi.com> 1.650.933.1373, 1.925.600.0401 ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 10:23 incoming Andrew Morton 2005-04-12 11:02 ` incoming David Vrabel @ 2005-04-12 14:38 ` Chris Friesen 2005-04-12 20:55 ` incoming Russell King 2005-04-14 11:48 ` incoming Geert Uytterhoeven 3 siblings, 0 replies; 530+ messages in thread From: Chris Friesen @ 2005-04-12 14:38 UTC (permalink / raw) To: Andrew Morton; +Cc: Linus Torvalds, linux-kernel Andrew Morton wrote: > As the commits list probably isn't working at present I'll cc linux-kernel > on this lot. Fairly cruel, sorry, but I don't like the idea of people not > knowing what's hitting the main tree. I'd like to second the idea of having all the patches be replies to this original posting (ie one level of indenting for all patches). That way a threaded view will only have one subject line for all 198 patches. Chris ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 10:23 incoming Andrew Morton 2005-04-12 11:02 ` incoming David Vrabel 2005-04-12 14:38 ` incoming Chris Friesen @ 2005-04-12 20:55 ` Russell King 2005-04-12 21:08 ` incoming Andrew Morton 2005-04-14 11:48 ` incoming Geert Uytterhoeven 3 siblings, 1 reply; 530+ messages in thread From: Russell King @ 2005-04-12 20:55 UTC (permalink / raw) To: Andrew Morton; +Cc: Linus Torvalds, linux-kernel On Tue, Apr 12, 2005 at 03:23:22AM -0700, Andrew Morton wrote: > As the commits list probably isn't working at present I'll cc linux-kernel > on this lot. Fairly cruel, sorry, but I don't like the idea of people not > knowing what's hitting the main tree. I don't see a patch which adds linux/pm.h to linux/sysdev.h, which is required to fix ARM builds in -rc2 and onwards kernels. It is my understanding that you have such a patch, and if it isn't going to be sent, I'd like to send my own fix so that ARM can start building again in mainline. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 20:55 ` incoming Russell King @ 2005-04-12 21:08 ` Andrew Morton 2005-04-12 21:12 ` incoming Russell King 0 siblings, 1 reply; 530+ messages in thread From: Andrew Morton @ 2005-04-12 21:08 UTC (permalink / raw) To: Russell King; +Cc: torvalds, linux-kernel Russell King <rmk+lkml@arm.linux.org.uk> wrote: > > I don't see a patch which adds linux/pm.h to linux/sysdev.h, which is > required to fix ARM builds in -rc2 and onwards kernels. That fix is buried in [patch 105/198] ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 21:08 ` incoming Andrew Morton @ 2005-04-12 21:12 ` Russell King 0 siblings, 0 replies; 530+ messages in thread From: Russell King @ 2005-04-12 21:12 UTC (permalink / raw) To: Andrew Morton; +Cc: torvalds, linux-kernel On Tue, Apr 12, 2005 at 02:08:00PM -0700, Andrew Morton wrote: > Russell King <rmk+lkml@arm.linux.org.uk> wrote: > > > > I don't see a patch which adds linux/pm.h to linux/sysdev.h, which is > > required to fix ARM builds in -rc2 and onwards kernels. > > That fix is buried in [patch 105/198] Great, thanks. I must have missed it, sorry. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-12 10:23 incoming Andrew Morton ` (2 preceding siblings ...) 2005-04-12 20:55 ` incoming Russell King @ 2005-04-14 11:48 ` Geert Uytterhoeven 2005-04-14 11:57 ` incoming Paulo Marques 2005-04-14 15:38 ` incoming Lee Revell 3 siblings, 2 replies; 530+ messages in thread From: Geert Uytterhoeven @ 2005-04-14 11:48 UTC (permalink / raw) To: Andrew Morton; +Cc: Linux Kernel Development On Tue, 12 Apr 2005, Andrew Morton wrote: > As the commits list probably isn't working at present I'll cc linux-kernel > on this lot. Fairly cruel, sorry, but I don't like the idea of people not > knowing what's hitting the main tree. Is it me, or were really only 117 mails of the 198 sent to lkml? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-14 11:48 ` incoming Geert Uytterhoeven @ 2005-04-14 11:57 ` Paulo Marques 2005-04-14 15:38 ` incoming Lee Revell 1 sibling, 0 replies; 530+ messages in thread From: Paulo Marques @ 2005-04-14 11:57 UTC (permalink / raw) To: Geert Uytterhoeven; +Cc: Andrew Morton, Linux Kernel Development Geert Uytterhoeven wrote: > On Tue, 12 Apr 2005, Andrew Morton wrote: > >>As the commits list probably isn't working at present I'll cc linux-kernel >>on this lot. Fairly cruel, sorry, but I don't like the idea of people not >>knowing what's hitting the main tree. > > > Is it me, or were really only 117 mails of the 198 sent to lkml? (?) I just double-checked, and I can say that I received all 198 emails from vger... -- Paulo Marques - www.grupopie.com All that is necessary for the triumph of evil is that good men do nothing. Edmund Burke (1729 - 1797) ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-14 11:48 ` incoming Geert Uytterhoeven 2005-04-14 11:57 ` incoming Paulo Marques @ 2005-04-14 15:38 ` Lee Revell 2005-04-16 9:03 ` incoming Paul Jackson 1 sibling, 1 reply; 530+ messages in thread From: Lee Revell @ 2005-04-14 15:38 UTC (permalink / raw) To: Geert Uytterhoeven; +Cc: Andrew Morton, Linux Kernel Development On Thu, 2005-04-14 at 13:48 +0200, Geert Uytterhoeven wrote: > On Tue, 12 Apr 2005, Andrew Morton wrote: > > As the commits list probably isn't working at present I'll cc linux-kernel > > on this lot. Fairly cruel, sorry, but I don't like the idea of people not > > knowing what's hitting the main tree. > > Is it me, or were really only 117 mails of the 198 sent to lkml? The patch bombing seems to have really wedged vger. It took up to 24 hours to get all the messages. Looks like Andrew's patch bomb script needs some rate limiting ;-) Lee ^ permalink raw reply [flat|nested] 530+ messages in thread
* Re: incoming 2005-04-14 15:38 ` incoming Lee Revell @ 2005-04-16 9:03 ` Paul Jackson 0 siblings, 0 replies; 530+ messages in thread From: Paul Jackson @ 2005-04-16 9:03 UTC (permalink / raw) To: Lee Revell; +Cc: geert, akpm, linux-kernel > Looks like Andrew's patch bomb script needs some rate limiting ;-) sendpatchset has that, already builtin ;) http://www.speakeasy.org/~pj99/sgi/sendpatchset Though the 5 second delay might not be enough for someone publishing at the rate Andrew does. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@engr.sgi.com> 1.650.933.1373, 1.925.600.0401 ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2004-11-11 0:02 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2004-11-11 0:02 UTC (permalink / raw) To: David S. Miller, Jeff Garzik; +Cc: netdev A bunch of tricky stuff which I picked up off the internets. They've been in -mm for a while but I otherwise cannot vouch for them. ^ permalink raw reply [flat|nested] 530+ messages in thread
* incoming @ 2004-10-28 7:19 Andrew Morton 0 siblings, 0 replies; 530+ messages in thread From: Andrew Morton @ 2004-10-28 7:19 UTC (permalink / raw) To: David S. Miller, Jeff Garzik; +Cc: netdev A bunch of net patches which I've accumulated. I've made no effort to test or review these... ^ permalink raw reply [flat|nested] 530+ messages in thread
end of thread, other threads:[~2022-04-27 19:41 UTC | newest] Thread overview: 530+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-06-29 2:32 incoming Andrew Morton 2021-06-29 2:33 ` [patch 001/192] mm/gup: fix try_grab_compound_head() race with split_huge_page() Andrew Morton 2021-06-29 2:33 ` [patch 002/192] mm/page_alloc: fix memory map initialization for descending nodes Andrew Morton 2021-06-29 2:33 ` [patch 003/192] mm/page_alloc: correct return value of populated elements if bulk array is populated Andrew Morton 2021-06-29 2:33 ` [patch 004/192] kthread: switch to new kerneldoc syntax for named variable macro argument Andrew Morton 2021-06-29 2:33 ` [patch 005/192] kthread_worker: fix return value when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Andrew Morton 2021-06-29 2:33 ` [patch 006/192] ia64: headers: drop duplicated words Andrew Morton 2021-06-29 2:33 ` [patch 007/192] ia64: mca_drv: fix incorrect array size calculation Andrew Morton 2021-06-29 2:33 ` [patch 008/192] streamline_config.pl: make spacing consistent Andrew Morton 2021-06-29 2:33 ` [patch 009/192] streamline_config.pl: add softtabstop=4 for vim users Andrew Morton 2021-06-29 2:33 ` [patch 010/192] scripts/spelling.txt: add more spellings to spelling.txt Andrew Morton 2021-06-29 2:33 ` [patch 011/192] ntfs: fix validity check for file name attribute Andrew Morton 2021-06-29 2:33 ` [patch 012/192] squashfs: add option to panic on errors Andrew Morton 2021-06-29 2:33 ` [patch 013/192] ocfs2: remove unnecessary INIT_LIST_HEAD() Andrew Morton 2021-06-29 2:34 ` [patch 014/192] ocfs2: fix snprintf() checking Andrew Morton 2021-06-29 2:34 ` [patch 015/192] ocfs2: remove redundant assignment to pointer queue Andrew Morton 2021-06-29 2:34 ` [patch 016/192] ocfs2: remove repeated uptodate check for buffer Andrew Morton 2021-06-29 2:34 ` [patch 017/192] ocfs2: replace simple_strtoull() with kstrtoull() Andrew Morton 2021-06-29 2:34 ` [patch 018/192] ocfs2: remove redundant initialization of variable ret Andrew Morton 2021-06-29 2:34 ` [patch 019/192] kernel: watchdog: modify the explanation related to watchdog thread Andrew Morton 2021-06-29 2:34 ` [patch 020/192] doc: " Andrew Morton 2021-06-29 2:34 ` [patch 021/192] doc: watchdog: modify the doc related to "watchdog/%u" Andrew Morton 2021-06-29 2:34 ` [patch 022/192] slab: use __func__ to trace function name Andrew Morton 2021-06-29 2:34 ` [patch 023/192] kunit: make test->lock irq safe Andrew Morton 2021-06-29 2:34 ` [patch 024/192] mm/slub, kunit: add a KUnit test for SLUB debugging functionality Andrew Morton 2021-06-29 2:34 ` [patch 025/192] slub: remove resiliency_test() function Andrew Morton 2021-06-29 2:34 ` [patch 026/192] mm, slub: change run-time assertion in kmalloc_index() to compile-time Andrew Morton 2021-06-29 2:34 ` [patch 027/192] slub: restore slub_debug=- behavior Andrew Morton 2021-06-29 2:34 ` [patch 028/192] slub: actually use 'message' in restore_bytes() Andrew Morton 2021-06-29 2:34 ` [patch 029/192] slub: indicate slab_fix() uses printf formats Andrew Morton 2021-06-29 2:34 ` [patch 030/192] slub: force on no_hash_pointers when slub_debug is enabled Andrew Morton 2021-06-29 2:34 ` [patch 031/192] mm: slub: move sysfs slab alloc/free interfaces to debugfs Andrew Morton 2021-06-29 2:34 ` [patch 032/192] mm/slub: add taint after the errors are printed Andrew Morton 2021-06-29 2:35 ` [patch 033/192] mm/kmemleak: fix possible wrong memory scanning period Andrew Morton 2021-06-29 2:35 ` [patch 034/192] dax: fix ENOMEM handling in grab_mapping_entry() Andrew Morton 2021-06-29 2:35 ` [patch 035/192] tools/vm/page_owner_sort.c: check malloc() return Andrew Morton 2021-06-29 2:35 ` [patch 036/192] mm/debug_vm_pgtable: ensure THP availability via has_transparent_hugepage() Andrew Morton 2021-06-29 2:35 ` [patch 037/192] mm: mmap_lock: use local locks instead of disabling preemption Andrew Morton 2021-06-29 2:35 ` [patch 038/192] mm/page_reporting: fix code style in __page_reporting_request() Andrew Morton 2021-06-29 2:35 ` [patch 039/192] mm/page_reporting: export reporting order as module parameter Andrew Morton 2021-06-29 2:35 ` [patch 040/192] mm/page_reporting: allow driver to specify reporting order Andrew Morton 2021-06-29 2:35 ` [patch 041/192] virtio_balloon: specify page reporting order if needed Andrew Morton 2021-06-29 2:35 ` [patch 042/192] mm: page-writeback: kill get_writeback_state() comments Andrew Morton 2021-06-29 2:35 ` [patch 043/192] mm/page-writeback: Fix performance when BDI's share of ratio is 0 Andrew Morton 2021-06-29 2:35 ` [patch 044/192] mm/page-writeback: update the comment of Dirty position control Andrew Morton 2021-06-29 2:35 ` [patch 045/192] mm/page-writeback: use __this_cpu_inc() in account_page_dirtied() Andrew Morton 2021-06-29 2:35 ` [patch 046/192] writeback, cgroup: do not switch inodes with I_WILL_FREE flag Andrew Morton 2021-06-29 2:35 ` [patch 047/192] writeback, cgroup: add smp_mb() to cgroup_writeback_umount() Andrew Morton 2021-06-29 2:35 ` [patch 048/192] writeback, cgroup: increment isw_nr_in_flight before grabbing an inode Andrew Morton 2021-06-29 2:35 ` [patch 049/192] writeback, cgroup: switch to rcu_work API in inode_switch_wbs() Andrew Morton 2021-06-29 2:35 ` [patch 050/192] writeback, cgroup: keep list of inodes attached to bdi_writeback Andrew Morton 2021-06-29 2:35 ` [patch 051/192] writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() Andrew Morton 2021-06-29 2:35 ` [patch 052/192] writeback, cgroup: support switching multiple inodes at once Andrew Morton 2021-06-29 2:36 ` [patch 053/192] writeback, cgroup: release dying cgwbs by switching attached inodes Andrew Morton 2021-06-29 2:36 ` [patch 054/192] fs: unexport __set_page_dirty Andrew Morton 2021-06-29 2:36 ` [patch 055/192] fs: move ramfs_aops to libfs Andrew Morton 2021-06-29 2:36 ` [patch 056/192] mm: require ->set_page_dirty to be explicitly wired up Andrew Morton 2021-06-29 2:36 ` [patch 057/192] mm/writeback: move __set_page_dirty() to core mm Andrew Morton 2021-06-29 2:36 ` [patch 058/192] mm/writeback: use __set_page_dirty in __set_page_dirty_nobuffers Andrew Morton 2021-06-29 2:36 ` [patch 059/192] iomap: use __set_page_dirty_nobuffers Andrew Morton 2021-06-29 2:36 ` [patch 060/192] fs: remove anon_set_page_dirty() Andrew Morton 2021-06-29 2:36 ` [patch 061/192] fs: remove noop_set_page_dirty() Andrew Morton 2021-06-29 2:36 ` [patch 062/192] mm: move page dirtying prototypes from mm.h Andrew Morton 2021-06-29 2:36 ` [patch 063/192] mm/gup_benchmark: support threading Andrew Morton 2021-06-29 2:36 ` [patch 064/192] mm: gup: allow FOLL_PIN to scale in SMP Andrew Morton 2021-06-29 2:36 ` [patch 065/192] mm: gup: pack has_pinned in MMF_HAS_PINNED Andrew Morton 2021-06-29 2:36 ` [patch 066/192] mm: pagewalk: fix walk for hugepage tables Andrew Morton 2021-06-29 2:36 ` [patch 067/192] mm/swapfile: use percpu_ref to serialize against concurrent swapoff Andrew Morton 2021-06-29 2:36 ` [patch 068/192] swap: fix do_swap_page() race with swapoff Andrew Morton 2021-06-29 2:36 ` [patch 069/192] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info() Andrew Morton 2021-06-29 2:36 ` [patch 070/192] mm/shmem: fix shmem_swapin() race with swapoff Andrew Morton 2021-06-29 2:37 ` [patch 071/192] mm/swapfile: move get_swap_page_of_type() under CONFIG_HIBERNATION Andrew Morton 2021-06-29 2:37 ` [patch 072/192] mm/swap: remove unused local variable nr_shadows Andrew Morton 2021-06-29 2:37 ` [patch 073/192] mm/swap_slots.c: delete meaningless forward declarations Andrew Morton 2021-06-29 2:37 ` [patch 074/192] mm, swap: remove unnecessary smp_rmb() in swap_type_to_swap_info() Andrew Morton 2021-06-29 2:37 ` [patch 075/192] mm: free idle swap cache page after COW Andrew Morton 2021-06-29 2:37 ` [patch 076/192] swap: check mapping_empty() for swap cache before being freed Andrew Morton 2021-06-29 2:37 ` [patch 077/192] mm/memcg: move mod_objcg_state() to memcontrol.c Andrew Morton 2021-06-29 2:37 ` [patch 078/192] mm/memcg: cache vmstat data in percpu memcg_stock_pcp Andrew Morton 2021-06-29 2:37 ` [patch 079/192] mm/memcg: improve refill_obj_stock() performance Andrew Morton 2021-06-29 2:37 ` [patch 080/192] mm/memcg: optimize user context object stock access Andrew Morton 2021-06-29 2:37 ` [patch 081/192] mm: memcg/slab: properly set up gfp flags for objcg pointer array Andrew Morton 2021-06-29 2:37 ` [patch 082/192] mm: memcg/slab: create a new set of kmalloc-cg-<n> caches Andrew Morton 2021-06-29 2:37 ` [patch 083/192] mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches Andrew Morton 2021-06-29 2:37 ` [patch 084/192] mm: memcontrol: fix root_mem_cgroup charging Andrew Morton 2021-06-29 2:37 ` [patch 085/192] mm: memcontrol: fix page charging in page replacement Andrew Morton 2021-06-29 2:37 ` [patch 086/192] mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm Andrew Morton 2021-06-29 2:37 ` [patch 087/192] mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec Andrew Morton 2021-06-29 2:37 ` [patch 088/192] mm: memcontrol: simplify lruvec_holds_page_lru_lock Andrew Morton 2021-06-29 2:37 ` [patch 089/192] mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec Andrew Morton 2021-06-29 2:38 ` [patch 090/192] mm: memcontrol: simplify the logic of objcg pinning memcg Andrew Morton 2021-06-29 2:38 ` [patch 091/192] mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock Andrew Morton 2021-06-29 2:38 ` [patch 092/192] mm: vmscan: remove noinline_for_stack Andrew Morton 2021-06-29 2:38 ` [patch 093/192] memcontrol: use flexible-array member Andrew Morton 2021-06-29 2:38 ` [patch 094/192] loop: use worker per cgroup instead of kworker Andrew Morton 2021-06-29 2:38 ` [patch 095/192] mm: charge active memcg when no mm is set Andrew Morton 2021-06-29 2:38 ` [patch 096/192] loop: charge i/o to mem and blk cg Andrew Morton 2021-06-29 2:38 ` [patch 097/192] mm: memcontrol: remove trailing semicolon in macros Andrew Morton 2021-06-29 2:38 ` [patch 098/192] perf: MAP_EXECUTABLE does not indicate VM_MAYEXEC Andrew Morton 2021-06-29 2:38 ` [patch 099/192] binfmt: remove in-tree usage of MAP_EXECUTABLE Andrew Morton 2021-06-29 2:38 ` [patch 100/192] mm: ignore MAP_EXECUTABLE in ksys_mmap_pgoff() Andrew Morton 2021-06-29 2:38 ` [patch 101/192] mm/mmap.c: logic of find_vma_intersection repeated in __do_munmap Andrew Morton 2021-06-29 2:38 ` [patch 102/192] mm/mmap: introduce unlock_range() for code cleanup Andrew Morton 2021-06-29 2:38 ` [patch 103/192] mm/mmap: use find_vma_intersection() in do_mmap() for overlap Andrew Morton 2021-06-29 2:38 ` [patch 104/192] mm/memory.c: fix comment of finish_mkwrite_fault() Andrew Morton 2021-06-29 2:38 ` [patch 105/192] mm: add vma_lookup(), update find_vma_intersection() comments Andrew Morton 2021-06-29 2:38 ` [patch 106/192] drm/i915/selftests: use vma_lookup() in __igt_mmap() Andrew Morton 2021-06-29 2:38 ` [patch 107/192] arch/arc/kernel/troubleshoot: use vma_lookup() instead of find_vma() Andrew Morton 2021-06-29 2:38 ` [patch 108/192] arch/arm64/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton 2021-06-29 2:39 ` [patch 109/192] arch/powerpc/kvm/book3s_hv_uvmem: " Andrew Morton 2021-06-29 2:39 ` [patch 110/192] arch/powerpc/kvm/book3s: use vma_lookup() in kvmppc_hv_setup_htab_rma() Andrew Morton 2021-06-29 2:39 ` [patch 111/192] arch/mips/kernel/traps: use vma_lookup() instead of find_vma() Andrew Morton 2021-06-29 2:39 ` [patch 112/192] arch/m68k/kernel/sys_m68k: use vma_lookup() in sys_cacheflush() Andrew Morton 2021-06-29 2:39 ` [patch 113/192] x86/sgx: use vma_lookup() in sgx_encl_find() Andrew Morton 2021-06-29 2:39 ` [patch 114/192] virt/kvm: use vma_lookup() instead of find_vma_intersection() Andrew Morton 2021-06-29 2:39 ` [patch 115/192] vfio: " Andrew Morton 2021-06-29 2:39 ` [patch 116/192] net/ipv5/tcp: use vma_lookup() in tcp_zerocopy_receive() Andrew Morton 2021-06-29 2:39 ` [patch 117/192] drm/amdgpu: use vma_lookup() in amdgpu_ttm_tt_get_user_pages() Andrew Morton 2021-06-29 2:39 ` [patch 118/192] media: videobuf2: use vma_lookup() in get_vaddr_frames() Andrew Morton 2021-06-29 2:39 ` [patch 119/192] misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma() Andrew Morton 2021-06-29 2:39 ` [patch 120/192] kernel/events/uprobes: use vma_lookup() in find_active_uprobe() Andrew Morton 2021-06-29 2:39 ` [patch 121/192] lib/test_hmm: use vma_lookup() in dmirror_migrate() Andrew Morton 2021-06-29 2:39 ` [patch 122/192] mm/ksm: use vma_lookup() in find_mergeable_vma() Andrew Morton 2021-06-29 2:39 ` [patch 123/192] mm/migrate: use vma_lookup() in do_pages_stat_array() Andrew Morton 2021-06-29 2:39 ` [patch 124/192] mm/mremap: use vma_lookup() in vma_to_resize() Andrew Morton 2021-06-29 2:39 ` [patch 125/192] mm/memory.c: use vma_lookup() in __access_remote_vm() Andrew Morton 2021-06-29 2:39 ` [patch 126/192] mm/mempolicy: " Andrew Morton 2021-06-29 2:39 ` [patch 127/192] mm: update legacy flush_tlb_* to use vma Andrew Morton 2021-06-29 2:39 ` [patch 128/192] mm: improve mprotect(R|W) efficiency on pages referenced once Andrew Morton 2021-06-29 17:50 ` Linus Torvalds 2021-06-29 17:50 ` Linus Torvalds 2021-06-30 0:12 ` Peter Xu 2021-06-30 1:39 ` Peter Xu 2021-06-30 2:25 ` Linus Torvalds 2021-06-30 2:25 ` Linus Torvalds 2021-06-30 16:42 ` Peter Xu 2021-06-30 18:03 ` Linus Torvalds 2021-06-30 18:03 ` Linus Torvalds 2021-07-01 1:27 ` Peter Xu 2021-07-01 18:29 ` Linus Torvalds 2021-07-01 18:29 ` Linus Torvalds 2021-07-06 1:24 ` Peter Xu 2021-06-29 2:40 ` [patch 129/192] h8300: remove unused variable Andrew Morton 2021-06-29 2:40 ` [patch 130/192] mm/dmapool: use DEVICE_ATTR_RO macro Andrew Morton 2021-06-29 2:40 ` [patch 131/192] mm, tracing: unify PFN format strings Andrew Morton 2021-06-29 2:40 ` [patch 132/192] mm/page_alloc: add an alloc_pages_bulk_array_node() helper Andrew Morton 2021-06-29 2:40 ` [patch 133/192] mm/vmalloc: switch to bulk allocator in __vmalloc_area_node() Andrew Morton 2021-06-29 2:40 ` [patch 134/192] mm/vmalloc: print a warning message first on failure Andrew Morton 2021-06-29 2:40 ` [patch 135/192] mm/vmalloc: remove quoted strings split across lines Andrew Morton 2021-06-29 2:40 ` [patch 136/192] mm/vmalloc: fallback to a single page allocator Andrew Morton 2021-06-29 2:40 ` [patch 137/192] mm: vmalloc: add cond_resched() in __vunmap() Andrew Morton 2021-06-29 2:40 ` [patch 138/192] printk: introduce dump_stack_lvl() Andrew Morton 2021-06-29 2:40 ` [patch 139/192] kasan: use dump_stack_lvl(KERN_ERR) to print stacks Andrew Morton 2021-06-29 2:40 ` [patch 140/192] kasan: test: improve failure message in KUNIT_EXPECT_KASAN_FAIL() Andrew Morton 2021-06-29 2:40 ` [patch 141/192] kasan: allow an architecture to disable inline instrumentation Andrew Morton 2021-06-29 2:40 ` [patch 142/192] kasan: allow architectures to provide an outline readiness check Andrew Morton 2021-06-29 2:40 ` [patch 143/192] mm: define default MAX_PTRS_PER_* in include/pgtable.h Andrew Morton 2021-06-29 2:40 ` [patch 144/192] kasan: use MAX_PTRS_PER_* for early shadow tables Andrew Morton 2021-06-29 2:40 ` [patch 145/192] kasan: rename CONFIG_KASAN_SW_TAGS_IDENTIFY to CONFIG_KASAN_TAGS_IDENTIFY Andrew Morton 2021-06-29 2:40 ` [patch 146/192] kasan: integrate the common part of two KASAN tag-based modes Andrew Morton 2021-06-29 2:40 ` [patch 147/192] kasan: add memory corruption identification support for hardware tag-based mode Andrew Morton 2021-06-29 2:41 ` [patch 148/192] mm: report which part of mem is being freed on initmem case Andrew Morton 2021-06-29 2:41 ` [patch 149/192] mm/mmzone.h: simplify is_highmem_idx() Andrew Morton 2021-06-29 2:41 ` [patch 150/192] mm: make __dump_page static Andrew Morton 2021-06-29 2:41 ` [patch 151/192] mm/page_alloc: bail out on fatal signal during reclaim/compaction retry attempt Andrew Morton 2021-06-29 2:41 ` [patch 152/192] mm/debug: factor PagePoisoned out of __dump_page Andrew Morton 2021-06-29 2:41 ` [patch 153/192] mm/page_owner: constify dump_page_owner Andrew Morton 2021-06-29 2:41 ` [patch 154/192] mm: make compound_head const-preserving Andrew Morton 2021-06-29 2:41 ` [patch 155/192] mm: constify get_pfnblock_flags_mask and get_pfnblock_migratetype Andrew Morton 2021-06-29 2:41 ` [patch 156/192] mm: constify page_count and page_ref_count Andrew Morton 2021-06-29 2:41 ` [patch 157/192] mm: optimise nth_page for contiguous memmap Andrew Morton 2021-06-29 2:41 ` [patch 158/192] mm/page_alloc: switch to pr_debug Andrew Morton 2021-06-29 2:41 ` [patch 159/192] kbuild: skip per-CPU BTF generation for pahole v1.18-v1.21 Andrew Morton 2021-06-29 2:41 ` [patch 160/192] mm/page_alloc: split per cpu page lists and zone stats Andrew Morton 2021-06-29 2:41 ` [patch 161/192] mm/page_alloc: convert per-cpu list protection to local_lock Andrew Morton 2021-06-29 2:41 ` [patch 162/192] mm/vmstat: convert NUMA statistics to basic NUMA counters Andrew Morton 2021-06-29 2:41 ` [patch 163/192] mm/vmstat: inline NUMA event counter updates Andrew Morton 2021-06-29 2:41 ` [patch 164/192] mm/page_alloc: batch the accounting updates in the bulk allocator Andrew Morton 2021-06-29 2:41 ` [patch 165/192] mm/page_alloc: reduce duration that IRQs are disabled for VM counters Andrew Morton 2021-06-29 2:41 ` [patch 166/192] mm/page_alloc: explicitly acquire the zone lock in __free_pages_ok Andrew Morton 2021-06-29 2:42 ` [patch 167/192] mm/page_alloc: avoid conflating IRQs disabled with zone->lock Andrew Morton 2021-06-29 2:42 ` [patch 168/192] mm/page_alloc: update PGFREE outside the zone lock in __free_pages_ok Andrew Morton 2021-06-29 2:42 ` [patch 169/192] mm: page_alloc: dump migrate-failed pages only at -EBUSY Andrew Morton 2021-06-29 2:42 ` [patch 170/192] mm/page_alloc: delete vm.percpu_pagelist_fraction Andrew Morton 2021-06-29 2:42 ` [patch 171/192] mm/page_alloc: disassociate the pcp->high from pcp->batch Andrew Morton 2021-06-29 2:42 ` [patch 172/192] mm/page_alloc: adjust pcp->high after CPU hotplug events Andrew Morton 2021-06-29 2:42 ` [patch 173/192] mm/page_alloc: scale the number of pages that are batch freed Andrew Morton 2021-06-29 2:42 ` [patch 174/192] mm/page_alloc: limit the number of pages on PCP lists when reclaim is active Andrew Morton 2021-06-29 2:42 ` [patch 175/192] mm/page_alloc: introduce vm.percpu_pagelist_high_fraction Andrew Morton 2021-06-29 2:42 ` [patch 176/192] mm: drop SECTION_SHIFT in code comments Andrew Morton 2021-06-29 2:42 ` [patch 177/192] mm/page_alloc: improve memmap_pages dbg msg Andrew Morton 2021-06-29 2:42 ` [patch 178/192] mm/page_alloc: fix counting of managed_pages Andrew Morton 2021-06-29 2:42 ` [patch 179/192] mm/page_alloc: move free_the_page Andrew Morton 2021-06-29 2:42 ` [patch 180/192] alpha: remove DISCONTIGMEM and NUMA Andrew Morton 2021-06-29 2:42 ` [patch 181/192] arc: update comment about HIGHMEM implementation Andrew Morton 2021-06-29 2:42 ` [patch 182/192] arc: remove support for DISCONTIGMEM Andrew Morton 2021-06-29 2:42 ` [patch 183/192] m68k: " Andrew Morton 2021-06-29 2:42 ` [patch 184/192] mm: remove CONFIG_DISCONTIGMEM Andrew Morton 2021-06-29 2:42 ` [patch 185/192] arch, mm: remove stale mentions of DISCONIGMEM Andrew Morton 2021-06-29 2:42 ` [patch 186/192] docs: remove description of DISCONTIGMEM Andrew Morton 2021-06-29 2:43 ` [patch 187/192] mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA Andrew Morton 2021-06-29 2:43 ` [patch 188/192] mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM Andrew Morton 2021-06-29 2:43 ` [patch 189/192] mm/page_alloc: allow high-order pages to be stored on the per-cpu lists Andrew Morton 2021-06-29 2:43 ` [patch 190/192] mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes Andrew Morton 2021-06-29 2:43 ` [patch 191/192] mm,hwpoison: send SIGBUS with error virutal address Andrew Morton 2021-06-29 2:43 ` [patch 192/192] mm,hwpoison: make get_hwpoison_page() call get_any_page() Andrew Morton -- strict thread matches above, loose matches on Subject: below -- 2022-04-27 19:41 incoming Andrew Morton 2022-04-21 23:35 incoming Andrew Morton 2022-04-15 2:12 incoming Andrew Morton 2022-04-08 20:08 incoming Andrew Morton 2022-04-01 18:27 incoming Andrew Morton 2022-04-01 18:20 incoming Andrew Morton 2022-04-01 18:27 ` incoming Andrew Morton 2022-03-25 1:07 incoming Andrew Morton 2022-03-23 23:04 incoming Andrew Morton 2022-03-22 21:38 incoming Andrew Morton 2022-03-16 23:14 incoming Andrew Morton 2022-03-05 4:28 incoming Andrew Morton 2022-02-26 3:10 incoming Andrew Morton 2022-02-12 0:27 incoming Andrew Morton 2022-02-12 2:02 ` incoming Linus Torvalds 2022-02-12 5:24 ` incoming Andrew Morton 2022-02-04 4:48 incoming Andrew Morton 2022-01-29 21:40 incoming Andrew Morton 2022-01-29 2:13 incoming Andrew Morton 2022-01-29 4:25 ` incoming Matthew Wilcox 2022-01-29 6:23 ` incoming Andrew Morton 2022-01-22 6:10 incoming Andrew Morton 2022-01-20 2:07 incoming Andrew Morton 2022-01-14 22:02 incoming Andrew Morton 2021-12-31 4:12 incoming Andrew Morton 2021-12-25 5:11 incoming Andrew Morton 2021-12-10 22:45 incoming Andrew Morton 2021-11-20 0:42 incoming Andrew Morton 2021-11-11 4:32 incoming Andrew Morton 2021-11-09 2:30 incoming Andrew Morton 2021-11-05 20:34 incoming Andrew Morton 2021-10-28 21:35 incoming Andrew Morton 2021-10-18 22:14 incoming Andrew Morton 2021-09-24 22:42 incoming Andrew Morton 2021-09-10 3:09 incoming Andrew Morton 2021-09-10 17:11 ` incoming Kees Cook 2021-09-10 20:13 ` incoming Kees Cook 2021-09-09 1:08 incoming Andrew Morton 2021-09-08 22:17 incoming Andrew Morton 2021-09-08 2:52 incoming Andrew Morton 2021-09-08 8:57 ` incoming Vlastimil Babka 2021-09-02 21:48 incoming Andrew Morton 2021-09-02 21:49 ` incoming Andrew Morton 2021-08-25 19:17 incoming Andrew Morton 2021-08-20 2:03 incoming Andrew Morton 2021-08-13 23:53 incoming Andrew Morton 2021-07-29 21:52 incoming Andrew Morton 2021-07-23 22:49 incoming Andrew Morton 2021-07-15 4:26 incoming Andrew Morton 2021-07-08 0:59 incoming Andrew Morton 2021-07-01 1:46 incoming Andrew Morton 2021-07-03 0:28 ` incoming Linus Torvalds 2021-07-03 1:06 ` incoming Linus Torvalds 2021-06-25 1:38 incoming Andrew Morton 2021-06-16 1:22 incoming Andrew Morton 2021-06-05 3:00 incoming Andrew Morton 2021-05-23 0:41 incoming Andrew Morton 2021-05-15 0:26 incoming Andrew Morton 2021-05-07 1:01 incoming Andrew Morton 2021-05-07 7:12 ` incoming Linus Torvalds 2021-05-05 1:32 incoming Andrew Morton 2021-05-05 1:47 ` incoming Linus Torvalds 2021-05-05 3:16 ` incoming Andrew Morton 2021-05-05 17:10 ` incoming Linus Torvalds 2021-05-05 17:10 ` incoming Linus Torvalds 2021-05-05 17:44 ` incoming Andrew Morton 2021-05-06 3:19 ` incoming Anshuman Khandual 2021-04-30 5:52 incoming Andrew Morton 2021-04-23 21:28 incoming Andrew Morton 2021-04-16 22:45 incoming Andrew Morton 2021-04-09 20:26 incoming Andrew Morton 2021-03-25 4:36 incoming Andrew Morton 2021-03-13 5:06 incoming Andrew Morton 2021-02-26 1:14 incoming Andrew Morton 2021-02-26 17:55 ` incoming Linus Torvalds 2021-02-26 19:16 ` incoming Andrew Morton 2021-02-24 19:58 incoming Andrew Morton 2021-02-24 21:30 ` incoming Linus Torvalds 2021-02-24 21:37 ` incoming Linus Torvalds 2021-02-24 21:37 ` incoming Linus Torvalds 2021-02-25 8:53 ` incoming Arnd Bergmann 2021-02-25 8:53 ` incoming Arnd Bergmann 2021-02-25 9:12 ` incoming Andrey Ryabinin 2021-02-25 9:12 ` incoming Andrey Ryabinin 2021-02-25 11:07 ` incoming Walter Wu 2021-02-13 4:52 incoming Andrew Morton 2021-02-09 21:41 incoming Andrew Morton 2021-02-10 19:30 ` incoming Linus Torvalds 2021-02-05 2:31 incoming Andrew Morton 2021-01-24 5:00 incoming Andrew Morton 2021-01-12 23:48 incoming Andrew Morton 2021-01-15 23:32 ` incoming Linus Torvalds 2020-12-29 23:13 incoming Andrew Morton 2020-12-22 19:58 incoming Andrew Morton 2020-12-22 21:43 ` incoming Linus Torvalds 2020-12-18 22:00 incoming Andrew Morton 2020-12-16 4:41 incoming Andrew Morton 2020-12-15 20:32 incoming Andrew Morton 2020-12-15 21:00 ` incoming Linus Torvalds 2020-12-15 22:48 ` incoming Linus Torvalds 2020-12-15 22:49 ` incoming Linus Torvalds 2020-12-15 22:55 ` incoming Andrew Morton 2020-12-15 3:02 incoming Andrew Morton 2020-12-15 3:25 ` incoming Linus Torvalds 2020-12-15 3:25 ` incoming Linus Torvalds 2020-12-15 3:30 ` incoming Linus Torvalds 2020-12-15 3:30 ` incoming Linus Torvalds 2020-12-15 14:04 ` incoming Konstantin Ryabitsev 2020-12-11 21:35 incoming Andrew Morton 2020-12-06 6:14 incoming Andrew Morton 2020-11-22 6:16 incoming Andrew Morton 2020-11-14 6:51 incoming Andrew Morton 2020-11-02 1:06 incoming Andrew Morton 2020-10-17 23:13 incoming Andrew Morton 2020-10-16 2:40 incoming Andrew Morton 2020-10-16 3:03 ` incoming Andrew Morton 2020-10-13 23:46 incoming Andrew Morton 2020-10-11 6:15 incoming Andrew Morton 2020-10-03 5:20 incoming Andrew Morton 2020-09-26 4:17 incoming Andrew Morton 2020-09-19 4:19 incoming Andrew Morton 2020-09-04 23:34 incoming Andrew Morton 2020-08-21 0:41 incoming Andrew Morton 2020-08-15 0:29 incoming Andrew Morton 2020-08-12 1:29 incoming Andrew Morton 2020-08-07 6:16 incoming Andrew Morton 2020-07-24 4:14 incoming Andrew Morton 2020-07-03 22:14 incoming Andrew Morton 2020-06-26 3:28 incoming Andrew Morton 2020-06-26 6:51 ` incoming Linus Torvalds 2020-06-26 7:31 ` incoming Linus Torvalds 2020-06-26 17:39 ` incoming Konstantin Ryabitsev 2020-06-26 17:40 ` incoming Konstantin Ryabitsev 2020-06-12 0:30 incoming Andrew Morton 2020-06-11 1:40 incoming Andrew Morton 2020-06-09 4:29 incoming Andrew Morton 2020-06-09 16:58 ` incoming Linus Torvalds 2020-06-08 4:35 incoming Andrew Morton 2020-06-04 23:45 incoming Andrew Morton 2020-06-03 22:55 incoming Andrew Morton 2020-06-02 20:09 incoming Andrew Morton 2020-06-02 4:44 incoming Andrew Morton 2020-06-02 20:08 ` incoming Andrew Morton 2020-06-02 20:45 ` incoming Linus Torvalds 2020-06-02 21:38 ` incoming Andrew Morton 2020-06-02 22:18 ` incoming Linus Torvalds 2020-05-28 5:20 incoming Andrew Morton 2020-05-28 20:10 ` incoming Linus Torvalds 2020-05-29 20:31 ` incoming Andrew Morton 2020-05-29 20:38 ` incoming Linus Torvalds 2020-05-29 21:12 ` incoming Andrew Morton 2020-05-29 21:20 ` incoming Linus Torvalds 2020-05-23 5:22 incoming Andrew Morton 2020-05-14 0:50 incoming Andrew Morton 2020-05-08 1:35 incoming Andrew Morton 2020-04-21 1:13 incoming Andrew Morton 2020-04-12 7:41 incoming Andrew Morton 2020-04-10 21:30 incoming Andrew Morton 2020-04-07 3:02 incoming Andrew Morton 2020-04-02 4:01 incoming Andrew Morton 2020-03-29 2:14 incoming Andrew Morton 2020-03-22 1:19 incoming Andrew Morton 2020-03-06 6:27 incoming Andrew Morton 2020-02-21 4:00 incoming Andrew Morton 2020-02-21 4:03 ` incoming Andrew Morton 2020-02-21 18:21 ` incoming Linus Torvalds 2020-02-21 18:32 ` incoming Konstantin Ryabitsev 2020-02-27 9:59 ` incoming Vlastimil Babka 2020-02-21 19:33 ` incoming Linus Torvalds 2020-02-04 1:33 incoming Andrew Morton 2020-02-04 2:27 ` incoming Linus Torvalds 2020-02-04 2:46 ` incoming Andrew Morton 2020-02-04 3:11 ` incoming Linus Torvalds 2020-01-31 6:10 incoming Andrew Morton 2020-01-14 0:28 incoming Andrew Morton 2020-01-04 20:55 incoming Andrew Morton 2019-12-18 4:50 incoming Andrew Morton 2019-12-05 0:48 incoming Andrew Morton 2019-12-01 1:47 incoming Andrew Morton 2019-12-01 5:17 ` incoming James Bottomley 2019-12-01 21:07 ` incoming Linus Torvalds 2019-12-02 8:21 ` incoming Steven Price 2019-11-22 1:53 incoming Andrew Morton 2019-11-16 1:34 incoming Andrew Morton 2019-11-06 5:16 incoming Andrew Morton 2019-10-19 3:19 incoming Andrew Morton 2019-10-14 21:11 incoming Andrew Morton 2019-10-07 0:57 incoming Andrew Morton 2019-09-25 23:45 incoming Andrew Morton 2019-09-23 22:31 incoming Andrew Morton 2019-09-24 0:55 ` incoming Linus Torvalds 2019-09-24 4:31 ` incoming Andrew Morton 2019-09-24 7:48 ` incoming Michal Hocko 2019-09-24 15:34 ` incoming Linus Torvalds 2019-09-25 6:36 ` incoming Michal Hocko 2019-09-24 19:55 ` incoming Vlastimil Babka 2019-08-30 23:04 incoming Andrew Morton 2019-08-25 0:54 incoming Andrew Morton [not found] <20190718155613.546f9056bbb57f486ab64307@linux-foundation.org> 2019-07-19 10:42 ` incoming Vlastimil Babka [not found] <20190716162536.bb52b8f34a8ecf5331a86a42@linux-foundation.org> 2019-07-17 8:47 ` incoming Vlastimil Babka 2019-07-17 8:57 ` incoming Bhaskar Chowdhury 2019-07-17 16:13 ` incoming Linus Torvalds 2019-07-17 16:13 ` incoming Linus Torvalds 2019-07-17 17:09 ` incoming Christian Brauner 2019-07-17 18:13 ` incoming Vlastimil Babka 2018-02-06 23:34 incoming Andrew Morton 2018-02-01 0:13 incoming Andrew Morton 2018-02-01 0:25 ` incoming Andrew Morton 2018-01-19 0:33 incoming Andrew Morton 2018-01-13 0:52 incoming Andrew Morton 2018-01-05 0:17 incoming Andrew Morton 2017-12-14 23:32 incoming Andrew Morton 2017-11-30 0:09 incoming Andrew Morton 2017-11-17 23:25 incoming Andrew Morton 2017-11-16 1:29 incoming Andrew Morton 2017-11-09 21:38 incoming Andrew Morton 2017-11-02 22:59 incoming Andrew Morton 2017-10-13 22:57 incoming Andrew Morton 2017-10-03 23:14 incoming Andrew Morton 2017-09-13 23:28 incoming Andrew Morton 2017-09-08 23:10 incoming Andrew Morton [not found] ` <CA+55aFwRXB5_kSuN7o+tqN6Eft6w5oZuLG3B8Rns=0ZZa2ihgA@mail.gmail.com> [not found] ` <CA+55aFw+z3HDT4s1C41j=d5_0QTSu8NLSSpnk_jxZ39w34xgnA@mail.gmail.com> 2017-09-09 18:09 ` incoming Andrew Morton 2017-09-06 23:17 incoming Andrew Morton 2017-08-31 23:15 incoming Andrew Morton 2017-08-25 22:55 incoming Andrew Morton 2017-08-18 22:15 incoming Andrew Morton 2017-08-10 22:23 incoming Andrew Morton 2017-08-02 20:31 incoming Andrew Morton 2017-07-14 21:46 incoming Andrew Morton 2017-07-12 21:32 incoming Andrew Morton 2017-07-10 22:46 incoming Andrew Morton 2017-07-06 22:34 incoming Andrew Morton 2017-06-23 22:08 incoming Andrew Morton 2017-06-16 21:02 incoming Andrew Morton 2017-06-02 21:45 incoming Andrew Morton 2017-05-12 22:45 incoming Andrew Morton 2017-05-08 22:53 incoming Andrew Morton 2017-05-03 21:50 incoming Andrew Morton 2017-04-20 21:37 incoming Andrew Morton 2017-04-13 21:56 incoming Andrew Morton 2017-04-07 23:04 incoming Andrew Morton 2017-03-31 22:11 incoming Andrew Morton 2017-03-16 23:40 incoming Andrew Morton 2017-03-10 0:15 incoming Andrew Morton 2017-02-27 22:25 incoming Andrew Morton 2017-02-24 22:55 incoming Andrew Morton 2017-02-22 23:38 incoming Andrew Morton 2017-02-18 11:42 incoming Andrew Morton 2017-02-08 22:30 incoming Andrew Morton 2017-01-24 23:17 incoming Andrew Morton 2017-01-11 0:57 incoming Andrew Morton 2016-12-20 0:22 incoming Andrew Morton 2016-12-14 23:04 incoming Andrew Morton 2016-12-13 0:40 incoming Andrew Morton 2016-12-07 22:44 incoming Andrew Morton 2016-12-03 1:26 incoming Andrew Morton 2016-11-30 23:53 incoming Andrew Morton 2016-11-10 18:45 incoming Andrew Morton 2016-10-11 20:49 incoming Andrew Morton 2016-10-07 23:53 incoming Andrew Morton 2016-09-30 22:11 incoming Andrew Morton 2016-09-28 22:22 incoming Andrew Morton 2016-09-19 21:43 incoming Andrew Morton 2016-09-01 23:14 incoming Andrew Morton 2016-08-25 22:16 incoming Andrew Morton 2016-08-11 22:32 incoming Andrew Morton 2016-08-04 22:31 incoming Andrew Morton 2016-08-03 20:45 incoming Andrew Morton 2016-08-02 21:01 incoming Andrew Morton 2016-07-28 22:42 incoming Andrew Morton 2016-07-26 22:16 incoming Andrew Morton 2016-07-20 22:44 incoming Andrew Morton 2016-07-14 19:06 incoming Andrew Morton 2016-06-24 21:48 incoming Andrew Morton 2016-06-08 22:33 incoming Andrew Morton 2016-06-03 21:51 incoming Andrew Morton 2016-05-27 21:26 incoming Andrew Morton 2016-05-26 22:15 incoming Andrew Morton 2016-05-23 23:21 incoming Andrew Morton 2016-05-20 23:55 incoming Andrew Morton 2016-05-20 0:07 incoming Andrew Morton 2016-05-12 22:41 incoming Andrew Morton 2016-05-09 23:28 incoming Andrew Morton 2016-05-05 23:21 incoming Andrew Morton [not found] <20150909153424.3feb1c403a841ab97b2d98ab@linux-foundation.org> 2015-09-09 23:23 ` incoming Linus Torvalds 2015-09-10 6:47 ` incoming Rasmus Villemoes 2007-05-02 22:02 incoming Andrew Morton 2007-05-02 22:02 ` incoming Andrew Morton 2007-05-02 22:31 ` incoming Benjamin Herrenschmidt 2007-05-02 22:31 ` incoming Benjamin Herrenschmidt 2007-05-03 7:55 ` incoming Russell King 2007-05-03 7:55 ` incoming Russell King 2007-05-03 8:05 ` incoming Andrew Morton 2007-05-03 8:05 ` incoming Andrew Morton 2007-05-04 13:37 ` incoming Greg KH 2007-05-04 13:37 ` incoming Greg KH 2007-05-04 16:14 ` incoming Andrew Morton 2007-05-04 16:14 ` incoming Andrew Morton 2007-05-04 17:02 ` incoming Greg KH 2007-05-04 17:02 ` incoming Greg KH 2007-05-04 18:57 ` incoming Roland McGrath 2007-05-04 18:57 ` incoming Roland McGrath 2007-05-04 19:24 ` incoming Greg KH 2007-05-04 19:24 ` incoming Greg KH 2007-05-04 19:29 ` incoming Roland McGrath 2007-05-04 19:29 ` incoming Roland McGrath 2006-10-20 21:39 incoming Andrew Morton 2006-10-20 22:31 ` incoming Alan Cox 2005-04-12 10:23 incoming Andrew Morton 2005-04-12 11:02 ` incoming David Vrabel 2005-04-12 11:10 ` incoming Andrew Morton 2005-04-12 11:33 ` incoming David Vrabel 2005-04-12 18:31 ` incoming Matthias Urlichs 2005-04-16 8:59 ` incoming Paul Jackson 2005-04-12 14:38 ` incoming Chris Friesen 2005-04-12 20:55 ` incoming Russell King 2005-04-12 21:08 ` incoming Andrew Morton 2005-04-12 21:12 ` incoming Russell King 2005-04-14 11:48 ` incoming Geert Uytterhoeven 2005-04-14 11:57 ` incoming Paulo Marques 2005-04-14 15:38 ` incoming Lee Revell 2005-04-16 9:03 ` incoming Paul Jackson 2004-11-11 0:02 incoming Andrew Morton 2004-10-28 7:19 incoming Andrew Morton
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