From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, anshuman.khandual@arm.com,
david@redhat.com, linux-mm@kvack.org, mm-commits@vger.kernel.org,
torvalds@linux-foundation.org
Subject: [patch 084/146] mm/page_alloc.c: modify the comment section for alloc_contig_pages()
Date: Fri, 14 Jan 2022 14:07:33 -0800 [thread overview]
Message-ID: <20220114220733.mDKSUOxi2%akpm@linux-foundation.org> (raw)
In-Reply-To: <20220114140222.6b14f0061194d3200000c52d@linux-foundation.org>
From: Anshuman Khandual <anshuman.khandual@arm.com>
Subject: mm/page_alloc.c: modify the comment section for alloc_contig_pages()
Clarify that the alloc_contig_pages() allocated range will always be
aligned to the requested nr_pages.
Link: https://lkml.kernel.org/r/1639545478-12160-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/page_alloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/page_alloc.c~mm-page_alloc-modify-the-comment-section-for-alloc_contig_pages
+++ a/mm/page_alloc.c
@@ -9272,8 +9272,8 @@ static bool zone_spans_last_pfn(const st
* for allocation requests which can not be fulfilled with the buddy allocator.
*
* The allocated memory is always aligned to a page boundary. If nr_pages is a
- * power of two then the alignment is guaranteed to be to the given nr_pages
- * (e.g. 1GB request would be aligned to 1GB).
+ * power of two, then allocated range is also guaranteed to be aligned to same
+ * nr_pages (e.g. 1GB request would be aligned to 1GB).
*
* Allocated pages can be freed with free_contig_range() or by manually calling
* __free_page() on each allocated page.
_
next prev parent reply other threads:[~2022-01-14 22:07 UTC|newest]
Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 22:02 incoming Andrew Morton
2022-01-14 22:02 ` [patch 001/146] kthread: add the helper function kthread_run_on_cpu() Andrew Morton
2022-01-14 22:02 ` [patch 002/146] RDMA/siw: make use of " Andrew Morton
2022-01-16 16:56 ` Bernard Metzler
2022-01-14 22:02 ` [patch 003/146] ring-buffer: " Andrew Morton
2022-01-14 22:03 ` [patch 004/146] rcutorture: " Andrew Morton
2022-01-14 22:03 ` [patch 005/146] trace/osnoise: " Andrew Morton
2022-01-14 22:03 ` [patch 006/146] trace/hwlat: " Andrew Morton
2022-01-14 22:03 ` [patch 007/146] ia64: module: use swap() to make code cleaner Andrew Morton
2022-01-14 22:03 ` [patch 008/146] arch/ia64/kernel/setup.c: " Andrew Morton
2022-01-14 22:03 ` [patch 009/146] ia64: fix typo in a comment Andrew Morton
2022-01-14 22:03 ` [patch 010/146] ia64: topology: use default_groups in kobj_type Andrew Morton
2022-01-14 22:03 ` [patch 011/146] scripts/spelling.txt: add "oveflow" Andrew Morton
2022-01-14 22:03 ` [patch 012/146] fs/ntfs/attrib.c: fix one kernel-doc comment Andrew Morton
2022-01-14 22:03 ` [patch 013/146] squashfs: provide backing_dev_info in order to disable read-ahead Andrew Morton
2022-01-14 22:03 ` [patch 014/146] ocfs2: use BUG_ON instead of if condition followed by BUG Andrew Morton
2022-01-14 22:03 ` [patch 015/146] ocfs2: clearly handle ocfs2_grab_pages_for_write() return value Andrew Morton
2022-01-14 22:03 ` [patch 016/146] ocfs2: use default_groups in kobj_type Andrew Morton
2022-01-14 22:03 ` [patch 017/146] ocfs2: remove redundant assignment to pointer root_bh Andrew Morton
2022-01-14 22:03 ` [patch 018/146] ocfs2: cluster: use default_groups in kobj_type Andrew Morton
2022-01-14 22:03 ` [patch 019/146] ocfs2: remove redundant assignment to variable free_space Andrew Morton
2022-01-14 22:03 ` [patch 020/146] fs/ioctl: remove unnecessary __user annotation Andrew Morton
2022-01-14 22:03 ` [patch 021/146] mm/slab_common: use WARN() if cache still has objects on destroy Andrew Morton
2022-01-14 22:04 ` [patch 022/146] mm: slab: make slab iterator functions static Andrew Morton
2022-01-14 22:04 ` [patch 023/146] kmemleak: fix kmemleak false positive report with HW tag-based kasan enable Andrew Morton
2022-01-14 22:04 ` [patch 024/146] mm: kmemleak: alloc gray object for reserved region with direct map Andrew Morton
2022-01-14 22:04 ` [patch 025/146] mm: defer kmemleak object creation of module_alloc() Andrew Morton
2022-01-14 22:04 ` [patch 026/146] mm/page_alloc: split prep_compound_page into head and tail subparts Andrew Morton
2022-01-14 22:04 ` [patch 027/146] mm/page_alloc: refactor memmap_init_zone_device() page init Andrew Morton
2022-01-14 22:04 ` [patch 028/146] mm/memremap: add ZONE_DEVICE support for compound pages Andrew Morton
2022-01-14 22:04 ` [patch 029/146] device-dax: use ALIGN() for determining pgoff Andrew Morton
2022-01-14 22:04 ` [patch 030/146] device-dax: use struct_size() Andrew Morton
2022-01-14 22:04 ` [patch 031/146] device-dax: ensure dev_dax->pgmap is valid for dynamic devices Andrew Morton
2022-01-14 22:04 ` [patch 032/146] device-dax: factor out page mapping initialization Andrew Morton
2022-01-14 22:04 ` [patch 033/146] device-dax: set mapping prior to vmf_insert_pfn{,_pmd,pud}() Andrew Morton
2022-01-14 22:04 ` [patch 034/146] device-dax: remove pfn from __dev_dax_{pte,pmd,pud}_fault() Andrew Morton
2022-01-14 22:04 ` [patch 035/146] device-dax: compound devmap support Andrew Morton
2022-01-14 22:04 ` [patch 036/146] kasan: test: add globals left-out-of-bounds test Andrew Morton
2022-01-14 22:04 ` [patch 037/146] kasan: add ability to detect double-kmem_cache_destroy() Andrew Morton
2022-01-14 22:04 ` [patch 038/146] kasan: test: add test case for double-kmem_cache_destroy() Andrew Morton
2022-01-14 22:05 ` [patch 039/146] kasan: fix quarantine conflicting with init_on_free Andrew Morton
2022-01-14 22:05 ` [patch 040/146] mm,fs: split dump_mapping() out from dump_page() Andrew Morton
2022-01-14 22:05 ` [patch 041/146] mm/debug_vm_pgtable: update comments regarding migration swap entries Andrew Morton
2022-01-14 22:05 ` [patch 042/146] mm/truncate.c: remove unneeded variable Andrew Morton
2022-01-14 22:05 ` [patch 043/146] gup: avoid multiple user access locking/unlocking in fault_in_{read/write}able Andrew Morton
2022-01-14 22:05 ` [patch 044/146] mm/gup.c: stricter check on THP migration entry during follow_pmd_mask Andrew Morton
2022-01-14 22:05 ` [patch 045/146] mm: shmem: don't truncate page if memory failure happens Andrew Morton
2022-01-14 22:05 ` [patch 046/146] shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode Andrew Morton
2022-01-14 22:05 ` [patch 047/146] mm/frontswap.c: use non-atomic '__set_bit()' when possible Andrew Morton
2022-01-14 22:05 ` [patch 048/146] mm: memcontrol: make cgroup_memory_nokmem static Andrew Morton
2022-01-14 22:05 ` [patch 049/146] mm/page_counter: remove an incorrect call to propagate_protected_usage() Andrew Morton
2022-01-14 22:05 ` [patch 050/146] mm/memcg: add oom_group_kill memory event Andrew Morton
2022-01-14 22:05 ` [patch 051/146] memcg: better bounds on the memcg stats updates Andrew Morton
2022-01-14 22:05 ` [patch 052/146] mm/memcg: use struct_size() helper in kzalloc() Andrew Morton
2022-01-14 22:05 ` [patch 053/146] memcg: add per-memcg vmalloc stat Andrew Morton
2022-01-14 22:05 ` [patch 054/146] tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner Andrew Morton
2022-01-14 22:05 ` [patch 055/146] mm: remove redundant check about FAULT_FLAG_ALLOW_RETRY bit Andrew Morton
2022-01-14 22:05 ` [patch 056/146] mm: rearrange madvise code to allow for reuse Andrew Morton
2022-01-15 14:16 ` Linus Torvalds
2022-01-18 16:34 ` Suren Baghdasaryan
2022-01-14 22:05 ` [patch 057/146] mm: add a field to store names for private anonymous memory Andrew Morton
2022-01-14 22:06 ` [patch 058/146] mm: add anonymous vma name refcounting Andrew Morton
2022-01-14 22:06 ` [patch 059/146] mm: move anon_vma declarations to linux/mm_inline.h Andrew Morton
2022-01-14 22:06 ` [patch 060/146] mm: move tlb_flush_pending inline helpers to mm_inline.h Andrew Morton
2022-01-14 22:06 ` [patch 061/146] mm: protect free_pgtables with mmap_lock write lock in exit_mmap Andrew Morton
2022-01-14 22:06 ` [patch 062/146] mm: document locking restrictions for vm_operations_struct::close Andrew Morton
2022-01-14 22:06 ` [patch 063/146] mm/oom_kill: allow process_mrelease to run under mmap_lock protection Andrew Morton
2022-01-14 22:06 ` [patch 064/146] docs/vm: add vmalloced-kernel-stacks document Andrew Morton
2022-01-14 22:06 ` [patch 065/146] mm: change page type prior to adding page table entry Andrew Morton
2022-01-14 22:06 ` [patch 066/146] mm: ptep_clear() page table helper Andrew Morton
2022-01-14 22:06 ` [patch 067/146] mm: page table check Andrew Morton
2022-01-14 22:06 ` [patch 068/146] x86: mm: add x86_64 support for " Andrew Morton
2022-01-14 22:06 ` [patch 069/146] mm: remove last argument of reuse_swap_page() Andrew Morton
2022-01-14 22:06 ` [patch 070/146] mm: remove the total_mapcount argument from page_trans_huge_map_swapcount() Andrew Morton
2022-01-14 22:06 ` [patch 071/146] mm: remove the total_mapcount argument from page_trans_huge_mapcount() Andrew Morton
2022-01-14 22:06 ` [patch 072/146] mm/dmapool.c: revert "make dma pool to use kmalloc_node" Andrew Morton
2022-01-14 22:06 ` [patch 073/146] mm/vmalloc: alloc GFP_NO{FS,IO} for vmalloc Andrew Morton
2022-01-14 22:07 ` [patch 074/146] mm/vmalloc: add support for __GFP_NOFAIL Andrew Morton
2022-01-14 22:07 ` [patch 075/146] mm/vmalloc: be more explicit about supported gfp flags Andrew Morton
2022-01-14 22:07 ` [patch 076/146] mm: allow !GFP_KERNEL allocations for kvmalloc Andrew Morton
2022-01-14 22:07 ` [patch 077/146] mm: make slab and vmalloc allocators __GFP_NOLOCKDEP aware Andrew Morton
2022-01-14 22:07 ` [patch 078/146] mm: introduce memalloc_retry_wait() Andrew Morton
2022-01-14 22:07 ` [patch 079/146] mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30% Andrew Morton
2022-01-14 22:07 ` [patch 080/146] mm: fix boolreturn.cocci warning Andrew Morton
2022-01-14 22:07 ` [patch 081/146] mm: page_alloc: fix building error on -Werror=array-compare Andrew Morton
2022-01-14 22:07 ` [patch 082/146] mm: drop node from alloc_pages_vma Andrew Morton
2022-01-14 22:07 ` [patch 083/146] include/linux/gfp.h: further document GFP_DMA32 Andrew Morton
2022-01-14 22:07 ` Andrew Morton [this message]
2022-01-14 22:07 ` [patch 085/146] mm_zone: add function to check if managed dma zone exists Andrew Morton
2022-01-14 22:07 ` [patch 086/146] dma/pool: create dma atomic pool only if dma zone has managed pages Andrew Morton
2022-01-14 22:07 ` [patch 087/146] mm/page_alloc.c: do not warn allocation failure on zone DMA if no " Andrew Morton
2022-01-14 22:07 ` [patch 088/146] hugetlb: add hugetlb.*.numa_stat file Andrew Morton
2022-01-14 22:07 ` [patch 089/146] mm, hugepages: make memory size variable in hugepage-mremap selftest Andrew Morton
2022-01-14 22:07 ` [patch 090/146] mm/vmstat: add events for THP max_ptes_* exceeds Andrew Morton
2022-01-14 22:07 ` [patch 091/146] selftests/vm: make charge_reserved_hugetlb.sh work with existing cgroup setting Andrew Morton
2022-01-14 22:08 ` [patch 092/146] selftests/uffd: allow EINTR/EAGAIN Andrew Morton
2022-01-14 22:08 ` [patch 093/146] userfaultfd/selftests: clean up hugetlb allocation code Andrew Morton
2022-01-14 22:08 ` [patch 094/146] vmscan: make drop_slab_node static Andrew Morton
2022-01-14 22:08 ` [patch 095/146] mm/page_isolation: unset migratetype directly for non Buddy page Andrew Morton
2022-01-14 22:08 ` [patch 096/146] mm/mempolicy: use policy_node helper with MPOL_PREFERRED_MANY Andrew Morton
2022-01-14 22:08 ` [patch 097/146] mm/mempolicy: add set_mempolicy_home_node syscall Andrew Morton
2022-01-14 22:08 ` [patch 098/146] mm/mempolicy: wire up syscall set_mempolicy_home_node Andrew Morton
2022-01-14 22:08 ` [patch 099/146] mm/mempolicy: fix all kernel-doc warnings Andrew Morton
2022-01-14 22:08 ` [patch 100/146] mm, oom: OOM sysrq should always kill a process Andrew Morton
2022-01-14 22:08 ` [patch 101/146] hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list() Andrew Morton
2022-01-14 22:08 ` [patch 102/146] mm: migrate: fix the return value of migrate_pages() Andrew Morton
2022-01-14 22:08 ` [patch 103/146] mm: migrate: correct the hugetlb migration stats Andrew Morton
2022-01-14 22:08 ` [patch 104/146] mm: compaction: fix the migration stats in trace_mm_compaction_migratepages() Andrew Morton
2022-01-14 22:08 ` [patch 105/146] mm: migrate: support multiple target nodes demotion Andrew Morton
2022-01-14 22:08 ` [patch 106/146] mm: migrate: add more comments for selecting target node randomly Andrew Morton
2022-01-14 22:08 ` [patch 107/146] mm/migrate: move node demotion code to near its user Andrew Morton
2022-01-14 22:08 ` [patch 108/146] mm/migrate: remove redundant variables used in a for-loop Andrew Morton
2022-01-14 22:08 ` [patch 109/146] mm/thp: drop unused trace events hugepage_[invalidate|splitting] Andrew Morton
2022-01-14 22:08 ` [patch 110/146] mm: ksm: fix use-after-free kasan report in ksm_might_need_to_copy Andrew Morton
2022-01-14 22:09 ` [patch 111/146] mm/hwpoison: mf_mutex for soft offline and unpoison Andrew Morton
2022-01-14 22:09 ` [patch 112/146] mm/hwpoison: remove MF_MSG_BUDDY_2ND and MF_MSG_POISONED_HUGE Andrew Morton
2022-01-14 22:09 ` [patch 113/146] mm/hwpoison: fix unpoison_memory() Andrew Morton
2022-01-14 22:09 ` [patch 114/146] mm: memcg/percpu: account extra objcg space to memory cgroups Andrew Morton
2022-01-14 22:09 ` [patch 115/146] mm/rmap: fix potential batched TLB flush race Andrew Morton
2022-01-14 22:09 ` [patch 116/146] zpool: remove the list of pools_head Andrew Morton
2022-01-14 22:09 ` [patch 117/146] zram: use ATTRIBUTE_GROUPS Andrew Morton
2022-01-14 22:09 ` [patch 118/146] mm: fix some comment errors Andrew Morton
2022-01-14 22:09 ` [patch 119/146] mm: make some vars and functions static or __init Andrew Morton
2022-01-14 22:09 ` [patch 120/146] mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault Andrew Morton
2022-01-14 22:09 ` [patch 121/146] mm/damon: unified access_check function naming rules Andrew Morton
2022-01-14 22:09 ` [patch 122/146] mm/damon: add 'age' of region tracepoint support Andrew Morton
2022-01-14 22:09 ` [patch 123/146] mm/damon/core: use abs() instead of diff_of() Andrew Morton
2022-01-14 22:09 ` [patch 124/146] mm/damon: remove some unneeded function definitions in damon.h Andrew Morton
2022-01-14 22:09 ` [patch 125/146] mm/damon/vaddr: remove swap_ranges() and replace it with swap() Andrew Morton
2022-01-14 22:09 ` [patch 126/146] mm/damon/schemes: add the validity judgment of thresholds Andrew Morton
2022-01-14 22:09 ` [patch 127/146] mm/damon: move damon_rand() definition into damon.h Andrew Morton
2022-01-14 22:09 ` [patch 128/146] mm/damon: modify damon_rand() macro to static inline function Andrew Morton
2022-01-14 22:09 ` [patch 129/146] mm/damon: convert macro functions to static inline functions Andrew Morton
2022-01-14 22:10 ` [patch 130/146] Docs/admin-guide/mm/damon/usage: update for scheme quotas and watermarks Andrew Morton
2022-01-14 22:10 ` [patch 131/146] Docs/admin-guide/mm/damon/usage: remove redundant information Andrew Morton
2022-01-14 22:10 ` [patch 132/146] Docs/admin-guide/mm/damon/usage: mention tracepoint at the beginning Andrew Morton
2022-01-14 22:10 ` [patch 133/146] Docs/admin-guide/mm/damon/usage: update for kdamond_pid and (mk|rm)_contexts Andrew Morton
2022-01-14 22:10 ` [patch 134/146] mm/damon: remove a mistakenly added comment for a future feature Andrew Morton
2022-01-14 22:10 ` [patch 135/146] mm/damon/schemes: account scheme actions that successfully applied Andrew Morton
2022-01-14 22:10 ` [patch 136/146] mm/damon/schemes: account how many times quota limit has exceeded Andrew Morton
2022-01-14 22:10 ` [patch 137/146] mm/damon/reclaim: provide reclamation statistics Andrew Morton
2022-01-14 22:10 ` [patch 138/146] Docs/admin-guide/mm/damon/reclaim: document statistics parameters Andrew Morton
2022-01-14 22:10 ` [patch 139/146] mm/damon/dbgfs: support all DAMOS stats Andrew Morton
2022-01-14 22:10 ` [patch 140/146] Docs/admin-guide/mm/damon/usage: update for schemes statistics Andrew Morton
2022-01-14 22:10 ` [patch 141/146] mm/damon: add access checking for hugetlb pages Andrew Morton
2022-01-14 22:10 ` [patch 142/146] mm/damon: move the implementation of damon_insert_region to damon.h Andrew Morton
2022-01-14 22:10 ` [patch 143/146] mm/damon/dbgfs: remove an unnecessary variable Andrew Morton
2022-01-14 22:10 ` [patch 144/146] mm/damon/vaddr: use pr_debug() for damon_va_three_regions() failure logging Andrew Morton
2022-01-14 22:10 ` [patch 145/146] mm/damon/vaddr: hide kernel pointer from damon_va_three_regions() failure log Andrew Morton
2022-01-14 22:10 ` [patch 146/146] mm/damon: hide kernel pointer from tracepoint event Andrew Morton
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