From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, chao@kernel.org,
chuck.lever@oracle.com, david@fromorbit.com, djwong@kernel.org,
jaegeuk@kernel.org, linux-mm@kvack.org, mhocko@suse.com,
mm-commits@vger.kernel.org, neilb@suse.de,
torvalds@linux-foundation.org, tytso@mit.edu
Subject: [patch 078/146] mm: introduce memalloc_retry_wait()
Date: Fri, 14 Jan 2022 14:07:14 -0800 [thread overview]
Message-ID: <20220114220714.jg5V2tDGp%akpm@linux-foundation.org> (raw)
In-Reply-To: <20220114140222.6b14f0061194d3200000c52d@linux-foundation.org>
From: "NeilBrown" <neilb@suse.de>
Subject: mm: introduce memalloc_retry_wait()
Various places in the kernel - largely in filesystems - respond to a
memory allocation failure by looping around and re-trying. Some of these
cannot conveniently use __GFP_NOFAIL, for reasons such as:
- a GFP_ATOMIC allocation, which __GFP_NOFAIL doesn't work on
- a need to check for the process being signalled between failures
- the possibility that other recovery actions could be performed
- the allocation is quite deep in support code, and passing down an
extra flag to say if __GFP_NOFAIL is wanted would be clumsy.
Many of these currently use congestion_wait() which (in almost all cases)
simply waits the given timeout - congestion isn't tracked for most
devices.
It isn't clear what the best delay is for loops, but it is clear that the
various filesystems shouldn't be responsible for choosing a timeout.
This patch introduces memalloc_retry_wait() with takes on that
responsibility. Code that wants to retry a memory allocation can call
this function passing the GFP flags that were used. It will wait however
is appropriate.
For now, it only considers __GFP_NORETRY and whatever
gfpflags_allow_blocking() tests. If blocking is allowed without
__GFP_NORETRY, then alloc_page either made some reclaim progress, or
waited for a while, before failing. So there is no need for much further
waiting. memalloc_retry_wait() will wait until the current jiffie ends.
If this condition is not met, then alloc_page() won't have waited much if
at all. In that case memalloc_retry_wait() waits about 200ms. This is
the delay that most current loops uses.
linux/sched/mm.h needs to be included in some files now,
but linux/backing-dev.h does not.
Link: https://lkml.kernel.org/r/163754371968.13692.1277530886009912421@noble.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Chao Yu <chao@kernel.org>
Cc: Darrick J. Wong <djwong@kernel.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
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/xfs/kmem.c | 3 +--
fs/xfs/xfs_buf.c | 2 +-
include/linux/sched/mm.h | 26 ++++++++++++++++++++++++++
net/sunrpc/svc_xprt.c | 3 ++-
14 files changed, 56 insertions(+), 37 deletions(-)
--- a/fs/ext4/extents.c~mm-introduce-memalloc_retry_wait
+++ a/fs/ext4/extents.c
@@ -27,8 +27,8 @@
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/fiemap.h>
-#include <linux/backing-dev.h>
#include <linux/iomap.h>
+#include <linux/sched/mm.h>
#include "ext4_jbd2.h"
#include "ext4_extents.h"
#include "xattr.h"
@@ -4407,8 +4407,7 @@ retry:
err = ext4_es_remove_extent(inode, last_block,
EXT_MAX_BLOCKS - last_block);
if (err == -ENOMEM) {
- cond_resched();
- congestion_wait(BLK_RW_ASYNC, HZ/50);
+ memalloc_retry_wait(GFP_ATOMIC);
goto retry;
}
if (err)
@@ -4416,8 +4415,7 @@ retry:
retry_remove_space:
err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1);
if (err == -ENOMEM) {
- cond_resched();
- congestion_wait(BLK_RW_ASYNC, HZ/50);
+ memalloc_retry_wait(GFP_ATOMIC);
goto retry_remove_space;
}
return err;
--- a/fs/ext4/inline.c~mm-introduce-memalloc_retry_wait
+++ a/fs/ext4/inline.c
@@ -7,7 +7,7 @@
#include <linux/iomap.h>
#include <linux/fiemap.h>
#include <linux/iversion.h>
-#include <linux/backing-dev.h>
+#include <linux/sched/mm.h>
#include "ext4_jbd2.h"
#include "ext4.h"
@@ -1929,8 +1929,7 @@ int ext4_inline_data_truncate(struct ino
retry:
err = ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS);
if (err == -ENOMEM) {
- cond_resched();
- congestion_wait(BLK_RW_ASYNC, HZ/50);
+ memalloc_retry_wait(GFP_ATOMIC);
goto retry;
}
if (err)
--- a/fs/ext4/page-io.c~mm-introduce-memalloc_retry_wait
+++ a/fs/ext4/page-io.c
@@ -24,7 +24,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
-#include <linux/backing-dev.h>
+#include <linux/sched/mm.h>
#include "ext4_jbd2.h"
#include "xattr.h"
@@ -523,12 +523,13 @@ int ext4_bio_write_page(struct ext4_io_s
ret = PTR_ERR(bounce_page);
if (ret == -ENOMEM &&
(io->io_bio || wbc->sync_mode == WB_SYNC_ALL)) {
- gfp_flags = GFP_NOFS;
+ gfp_t new_gfp_flags = GFP_NOFS;
if (io->io_bio)
ext4_io_submit(io);
else
- gfp_flags |= __GFP_NOFAIL;
- congestion_wait(BLK_RW_ASYNC, HZ/50);
+ new_gfp_flags |= __GFP_NOFAIL;
+ memalloc_retry_wait(gfp_flags);
+ gfp_flags = new_gfp_flags;
goto retry_encrypt;
}
--- a/fs/f2fs/data.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/data.c
@@ -8,9 +8,9 @@
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
+#include <linux/sched/mm.h>
#include <linux/mpage.h>
#include <linux/writeback.h>
-#include <linux/backing-dev.h>
#include <linux/pagevec.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
@@ -2542,7 +2542,7 @@ retry_encrypt:
/* flush pending IOs and wait for a while in the ENOMEM case */
if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
f2fs_flush_merged_writes(fio->sbi);
- congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
gfp_flags |= __GFP_NOFAIL;
goto retry_encrypt;
}
--- a/fs/f2fs/gc.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/gc.c
@@ -7,7 +7,6 @@
*/
#include <linux/fs.h>
#include <linux/module.h>
-#include <linux/backing-dev.h>
#include <linux/init.h>
#include <linux/f2fs_fs.h>
#include <linux/kthread.h>
@@ -15,6 +14,7 @@
#include <linux/freezer.h>
#include <linux/sched/signal.h>
#include <linux/random.h>
+#include <linux/sched/mm.h>
#include "f2fs.h"
#include "node.h"
@@ -1375,8 +1375,7 @@ retry:
if (err) {
clear_page_private_gcing(page);
if (err == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC,
- DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto retry;
}
if (is_dirty)
--- a/fs/f2fs/inode.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/inode.c
@@ -8,8 +8,8 @@
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
-#include <linux/backing-dev.h>
#include <linux/writeback.h>
+#include <linux/sched/mm.h>
#include "f2fs.h"
#include "node.h"
@@ -562,7 +562,7 @@ retry:
inode = f2fs_iget(sb, ino);
if (IS_ERR(inode)) {
if (PTR_ERR(inode) == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto retry;
}
}
--- a/fs/f2fs/node.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/node.c
@@ -8,7 +8,7 @@
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
#include <linux/mpage.h>
-#include <linux/backing-dev.h>
+#include <linux/sched/mm.h>
#include <linux/blkdev.h>
#include <linux/pagevec.h>
#include <linux/swap.h>
@@ -2750,7 +2750,7 @@ int f2fs_recover_inode_page(struct f2fs_
retry:
ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false);
if (!ipage) {
- congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto retry;
}
--- a/fs/f2fs/recovery.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/recovery.c
@@ -8,6 +8,7 @@
#include <asm/unaligned.h>
#include <linux/fs.h>
#include <linux/f2fs_fs.h>
+#include <linux/sched/mm.h>
#include "f2fs.h"
#include "node.h"
#include "segment.h"
@@ -587,7 +588,7 @@ retry_dn:
err = f2fs_get_dnode_of_data(&dn, start, ALLOC_NODE);
if (err) {
if (err == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto retry_dn;
}
goto out;
@@ -670,8 +671,7 @@ retry_prev:
err = check_index_in_prev_nodes(sbi, dest, &dn);
if (err) {
if (err == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC,
- DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto retry_prev;
}
goto err;
--- a/fs/f2fs/segment.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/segment.c
@@ -9,6 +9,7 @@
#include <linux/f2fs_fs.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
+#include <linux/sched/mm.h>
#include <linux/prefetch.h>
#include <linux/kthread.h>
#include <linux/swap.h>
@@ -245,9 +246,7 @@ retry:
LOOKUP_NODE);
if (err) {
if (err == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC,
- DEFAULT_IO_TIMEOUT);
- cond_resched();
+ memalloc_retry_wait(GFP_NOFS);
goto retry;
}
err = -EAGAIN;
@@ -424,9 +423,7 @@ retry:
err = f2fs_do_write_data_page(&fio);
if (err) {
if (err == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC,
- DEFAULT_IO_TIMEOUT);
- cond_resched();
+ memalloc_retry_wait(GFP_NOFS);
goto retry;
}
unlock_page(page);
--- a/fs/f2fs/super.c~mm-introduce-memalloc_retry_wait
+++ a/fs/f2fs/super.c
@@ -8,9 +8,9 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/fs.h>
+#include <linux/sched/mm.h>
#include <linux/statfs.h>
#include <linux/buffer_head.h>
-#include <linux/backing-dev.h>
#include <linux/kthread.h>
#include <linux/parser.h>
#include <linux/mount.h>
@@ -2415,8 +2415,7 @@ repeat:
page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
if (IS_ERR(page)) {
if (PTR_ERR(page) == -ENOMEM) {
- congestion_wait(BLK_RW_ASYNC,
- DEFAULT_IO_TIMEOUT);
+ memalloc_retry_wait(GFP_NOFS);
goto repeat;
}
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
--- a/fs/xfs/kmem.c~mm-introduce-memalloc_retry_wait
+++ a/fs/xfs/kmem.c
@@ -4,7 +4,6 @@
* All Rights Reserved.
*/
#include "xfs.h"
-#include <linux/backing-dev.h>
#include "xfs_message.h"
#include "xfs_trace.h"
@@ -26,6 +25,6 @@ kmem_alloc(size_t size, xfs_km_flags_t f
"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
current->comm, current->pid,
(unsigned int)size, __func__, lflags);
- congestion_wait(BLK_RW_ASYNC, HZ/50);
+ memalloc_retry_wait(lflags);
} while (1);
}
--- a/fs/xfs/xfs_buf.c~mm-introduce-memalloc_retry_wait
+++ a/fs/xfs/xfs_buf.c
@@ -394,7 +394,7 @@ xfs_buf_alloc_pages(
}
XFS_STATS_INC(bp->b_mount, xb_page_retries);
- congestion_wait(BLK_RW_ASYNC, HZ / 50);
+ memalloc_retry_wait(gfp_mask);
}
return 0;
}
--- a/include/linux/sched/mm.h~mm-introduce-memalloc_retry_wait
+++ a/include/linux/sched/mm.h
@@ -214,6 +214,32 @@ static inline void fs_reclaim_acquire(gf
static inline void fs_reclaim_release(gfp_t gfp_mask) { }
#endif
+/* Any memory-allocation retry loop should use
+ * memalloc_retry_wait(), and pass the flags for the most
+ * constrained allocation attempt that might have failed.
+ * This provides useful documentation of where loops are,
+ * and a central place to fine tune the waiting as the MM
+ * implementation changes.
+ */
+static inline void memalloc_retry_wait(gfp_t gfp_flags)
+{
+ /* We use io_schedule_timeout because waiting for memory
+ * typically included waiting for dirty pages to be
+ * written out, which requires IO.
+ */
+ __set_current_state(TASK_UNINTERRUPTIBLE);
+ gfp_flags = current_gfp_context(gfp_flags);
+ if (gfpflags_allow_blocking(gfp_flags) &&
+ !(gfp_flags & __GFP_NORETRY))
+ /* Probably waited already, no need for much more */
+ io_schedule_timeout(1);
+ else
+ /* Probably didn't wait, and has now released a lock,
+ * so now is a good time to wait
+ */
+ io_schedule_timeout(HZ/50);
+}
+
/**
* might_alloc - Mark possible allocation sites
* @gfp_mask: gfp_t flags that would be used to allocate
--- a/net/sunrpc/svc_xprt.c~mm-introduce-memalloc_retry_wait
+++ a/net/sunrpc/svc_xprt.c
@@ -6,6 +6,7 @@
*/
#include <linux/sched.h>
+#include <linux/sched/mm.h>
#include <linux/errno.h>
#include <linux/freezer.h>
#include <linux/kthread.h>
@@ -688,7 +689,7 @@ static int svc_alloc_arg(struct svc_rqst
return -EINTR;
}
trace_svc_alloc_arg_err(pages);
- schedule_timeout(msecs_to_jiffies(500));
+ memalloc_retry_wait(GFP_KERNEL);
}
rqstp->rq_page_end = &rqstp->rq_pages[pages];
rqstp->rq_pages[pages] = NULL; /* this might be seen in nfsd_splice_actor() */
_
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 ` Andrew Morton [this message]
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 ` [patch 084/146] mm/page_alloc.c: modify the comment section for alloc_contig_pages() Andrew Morton
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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