Sahitya Tummala a48542e8b4 mm/list_lru.c: fix list_lru_count_node() to be race free ...

commit 2c80cd57c74339889a8752b20862a16c28929c3a upstream.

list_lru_count_node() iterates over all memcgs to get the total number of
entries on the node but it can race with memcg_drain_all_list_lrus(),
which migrates the entries from a dead cgroup to another.  This can return
incorrect number of entries from list_lru_count_node().

Fix this by keeping track of entries per node and simply return it in
list_lru_count_node().

Link: http://lkml.kernel.org/r/1498707555-30525-1-git-send-email-stummala@codeaurora.org
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Alexander Polakov <apolyakov@beget.ru>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-07-21 07:42:21 +02:00

..

kasan

kasan: respect /proc/sys/kernel/traceoff_on_warning

2017-06-17 06:41:51 +02:00

backing-dev.c

block: fix double-free in the failure path of cgwb_bdi_init()

2017-02-26 11:10:52 +01:00

balloon_compaction.c

mm: balloon: use general non-lru movable page feature

2016-07-26 16:19:19 -07:00

bootmem.c

mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping

2016-10-11 15:06:33 -07:00

cleancache.c

cleancache: constify cleancache_ops structure

2016-01-27 09:09:57 -05:00

cma_debug.c

mm/cma_debug: correct size input to bitmap function

2015-07-17 16:39:54 -07:00

cma.c

mm/cma.c: check the max limit for cma allocation

2016-11-11 08:12:37 -08:00

cma.h

mm: cma: mark cma_bitmap_maxno() inline in header

2015-08-14 15:56:32 -07:00

compaction.c

mm, compaction: fix NR_ISOLATED_* stats for pfn based migration

2017-01-12 11:39:32 +01:00

debug_page_ref.c

mm/page_ref: add tracepoint to track down page reference manipulation

2016-03-17 15:09:34 -07:00

debug.c

mm: clarify why we avoid page_mapcount() for slab pages in dump_page()

2016-10-07 18:46:29 -07:00

dmapool.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

early_ioremap.c

mm/early_ioremap: use offset_in_page macro

2015-11-05 19:34:48 -08:00

fadvise.c

mm/fadvise.c: do not discard partial pages with POSIX_FADV_DONTNEED

2016-06-09 14:23:11 -07:00

failslab.c

mm: fault-inject take over bootstrap kmem_cache check

2016-03-15 16:55:16 -07:00

filemap.c

mm: do not access page->mapping directly on page_endio

2017-03-12 06:41:43 +01:00

frame_vector.c

mm: replace get_vaddr_frames() write/force parameters with gup_flags

2016-10-19 08:11:24 -07:00

frontswap.c

mm, frontswap: convert frontswap_enabled to static key

2016-07-26 16:19:19 -07:00

gup.c

mm: larger stack guard gap, between vmas

2017-06-24 07:11:18 +02:00

highmem.c

mm/highmem: make nr_free_highpages() handles all highmem zones by itself

2016-05-19 19:12:14 -07:00

huge_memory.c

thp, mm: fix crash due race in MADV_FREE handling

2017-07-21 07:42:21 +02:00

hugetlb_cgroup.c

mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size

2016-05-20 17:58:30 -07:00

hugetlb.c

mm, hugetlb: use pte_present() instead of pmd_present() in follow_huge_pmd()

2017-04-08 09:30:35 +02:00

hwpoison-inject.c

hwpoison: use page_cgroup_ino for filtering by memcg

2015-09-10 13:29:01 -07:00

init-mm.c

mm: Add a user_ns owner to mm_struct and fix ptrace permission checks

2017-01-06 10:40:13 +01:00

internal.h

mm, compaction: make full priority ignore pageblock suitability

2016-10-07 18:46:29 -07:00

interval_tree.c

mm: replace vma->sharead.linear with vma->shared

2015-02-10 14:30:31 -08:00

Kconfig

Allow KASAN and HOTPLUG_MEMORY to co-exist when doing build testing

2016-10-27 16:23:01 -07:00

Kconfig.debug

PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO

2016-09-13 02:35:27 +02:00

khugepaged.c

mm: khugepaged: fix radix tree node leak in shmem collapse error path

2017-01-12 11:39:32 +01:00

kmemcheck.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

kmemleak-test.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

kmemleak.c

mm: kmemleak: scan .data.ro_after_init

2016-11-11 08:12:37 -08:00

ksm.c

ksm: prevent crash after write_protect_page fails

2017-06-07 12:07:49 +02:00

list_lru.c

mm/list_lru.c: fix list_lru_count_node() to be race free

2017-07-21 07:42:21 +02:00

maccess.c

x86: remove more uaccess_32.h complexity

2016-05-22 17:21:27 -07:00

madvise.c

mm: make mmap_sem for write waits killable for mm syscalls

2016-05-23 17:04:14 -07:00

Makefile

Disable the __builtin_return_address() warning globally after all

2016-10-12 10:23:41 -07:00

memblock.c

mm: consider memblock reservations for deferred memory initialization sizing

2017-06-07 12:07:49 +02:00

memcontrol.c

mm: memcontrol: use special workqueue for creating per-memcg caches

2017-04-21 09:31:23 +02:00

memory_hotplug.c

base/memory, hotplug: fix a kernel oops in show_valid_zones()

2017-02-09 08:08:28 +01:00

memory-failure.c

mm/memory-failure.c: use compound_head() flags for huge pages

2017-06-24 07:11:16 +02:00

memory.c

mm: larger stack guard gap, between vmas

2017-06-24 07:11:18 +02:00

mempolicy.c

mm/mempolicy.c: fix error handling in set_mempolicy and mbind.

2017-04-12 12:41:15 +02:00

mempool.c

Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"

2016-07-28 16:07:41 -07:00

memtest.c

memtest: remove unused header files

2015-09-08 15:35:28 -07:00

migrate.c

mm: prevent NR_ISOLATE_* stats from going negative

2017-04-27 09:10:37 +02:00

mincore.c

mm, swap: use offset of swap entry as key of swap cache

2016-10-07 18:46:28 -07:00

mlock.c

mlock: fix mlock count can not decrease in race condition

2017-06-07 12:07:49 +02:00

mm_init.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

mmap.c

mm: fix new crash in unmapped_area_topdown()

2017-06-24 07:11:18 +02:00

mmu_context.c

mm/mmu_context, sched/core: Fix mmu_context.h assumption

2016-04-28 11:44:19 +02:00

mmu_notifier.c

fix Christoph's email addresses

2016-03-17 15:09:34 -07:00

mmzone.c

mm, page_alloc: inline the fast path of the zonelist iterator

2016-05-19 19:12:14 -07:00

mprotect.c

mm/numa: Remove duplicated include from mprotect.c

2016-10-19 17:28:48 +02:00

mremap.c

mremap: move_ptes: check pte dirty after its removal

2016-11-29 08:20:24 -08:00

msync.c

mm/msync: use offset_in_page macro

2015-11-05 19:34:48 -08:00

nobootmem.c

mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping

2016-10-11 15:06:33 -07:00

nommu.c

ptrace: Don't allow accessing an undumpable mm

2017-01-06 10:40:13 +01:00

oom_kill.c

oom: print nodemask in the oom report

2016-10-07 18:46:29 -07:00

page_alloc.c

mm: consider memblock reservations for deferred memory initialization sizing

2017-06-07 12:07:49 +02:00

page_counter.c

mm: page_counter: let page_counter_try_charge() return bool

2015-11-05 19:34:48 -08:00

page_ext.c

mm/page_ext: support extra space allocation by page_ext user

2016-10-07 18:46:27 -07:00

page_idle.c

mm, vmscan: move lru_lock to the node

2016-07-28 16:07:41 -07:00

page_io.c

mm/page_io.c: replace some BUG_ON()s with VM_BUG_ON_PAGE()

2016-10-07 18:46:29 -07:00

page_isolation.c

mm/page_isolation: fix typo: "paes" -> "pages"

2016-10-07 18:46:29 -07:00

page_owner.c

mm/page_owner: don't define fields on struct page_ext by hard-coding

2016-10-07 18:46:27 -07:00

page_poison.c

mm: check the return value of lookup_page_ext for all call sites

2016-06-03 15:06:22 -07:00

page-writeback.c

mm: don't use radix tree writeback tags for pages in swap cache

2016-10-07 18:46:28 -07:00

pagewalk.c

thp: rename split_huge_page_pmd() to split_huge_pmd()

2016-01-15 17:56:32 -08:00

percpu-km.c

mm: percpu: use pr_fmt to prefix output

2016-03-17 15:09:34 -07:00

percpu-vm.c

percpu: move region iterations out of pcpu_[de]populate_chunk()

2014-09-02 14:46:02 -04:00

percpu.c

percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages

2017-03-26 13:05:58 +02:00

pgtable-generic.c

mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range

2016-03-17 15:09:34 -07:00

process_vm_access.c

mm: remove write/force parameters from __get_user_pages_unlocked()

2016-10-18 14:13:37 -07:00

quicklist.c

fix Christoph's email addresses

2016-03-17 15:09:34 -07:00

readahead.c

mm: silently skip readahead for DAX inodes

2016-08-26 17:39:35 -07:00

rmap.c

mm: rmap: fix huge file mmap accounting in the memcg stats

2017-04-08 09:30:35 +02:00

shmem.c

shmem: fix sleeping from atomic context

2017-06-17 06:41:51 +02:00

slab_common.c

slub: move synchronize_sched out of slab_mutex on shrink

2017-03-22 12:43:38 +01:00

slab.c

slub: move synchronize_sched out of slab_mutex on shrink

2017-03-22 12:43:38 +01:00

slab.h

slub: move synchronize_sched out of slab_mutex on shrink

2017-03-22 12:43:38 +01:00

slob.c

slub: move synchronize_sched out of slab_mutex on shrink

2017-03-22 12:43:38 +01:00

slub.c

mm/slub.c: trace free objects at KERN_INFO

2017-06-07 12:07:49 +02:00

sparse-vmemmap.c

treewide: replace obsolete _refok by __ref

2016-08-02 17:31:41 -04:00

sparse.c

treewide: replace obsolete _refok by __ref

2016-08-02 17:31:41 -04:00

swap_cgroup.c

mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()

2017-07-05 14:40:17 +02:00

swap_state.c

mm, swap: use offset of swap entry as key of swap cache

2016-10-07 18:46:28 -07:00

swap.c

thp: reduce usage of huge zero page's atomic counter

2016-10-07 18:46:28 -07:00

swapfile.c

mm: support anonymous stable page

2017-01-19 20:17:59 +01:00

truncate.c

fs: add i_blocksize()

2017-06-14 15:06:00 +02:00

usercopy.c

mm: usercopy: Check for module addresses

2016-09-20 16:07:39 -07:00

userfaultfd.c

mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros

2016-04-04 10:41:08 -07:00

util.c

Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-10-22 09:39:10 -07:00

vmacache.c

mm: unrig VMA cache hit ratio

2016-10-07 18:46:27 -07:00

vmalloc.c

mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings

2017-07-05 14:40:28 +02:00

vmpressure.c

mm: vmpressure: fix sending wrong events on underflow

2017-03-12 06:41:43 +01:00

vmscan.c

mm, vmscan: consider eligible zones in get_scan_count

2017-03-12 06:41:44 +01:00

vmstat.c

seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char

2016-10-07 18:46:30 -07:00

workingset.c

mm: workingset: fix premature shadow node shrinking with cgroups

2017-04-08 09:30:36 +02:00

z3fold.c

mm/z3fold.c: avoid modifying HEADLESS page and minor cleanup

2016-06-03 16:02:55 -07:00

zbud.c

mm/zbud.c: use list_last_entry() instead of list_tail_entry()

2016-01-15 11:40:52 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

zsmalloc: expand class bit

2017-04-21 09:31:19 +02:00

zswap.c

zswap: disable changing params if init fails

2017-02-09 08:08:27 +01:00