Sahitya Tummala eb8e478e47 mm/list_lru.c: fix list_lru_count_node() to be race free ...

[ Upstream commit 2c80cd57c74339889a8752b20862a16c28929c3a ]

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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

2017-07-31 13:37:54 -04:00

..

kasan

kasan: respect /proc/sys/kernel/traceoff_on_warning

2017-06-25 22:02:20 -04:00

backing-dev.c

block: discard bdi_unregister() in favour of bdi_destroy()

2015-05-28 10:12:42 -06:00

balloon_compaction.c

virtio_balloon: fix race between migration and ballooning

2016-02-03 15:31:09 -05:00

bootmem.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2016-04-18 08:51:09 -04:00

cleancache.c

cleancache: remove limit on the number of cleancache enabled filesystems

2015-04-14 16:49:03 -07:00

cma_debug.c

mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()

2015-04-15 16:35:20 -07:00

cma.c

mm: cma: add trace events for CMA allocations and freeings

2015-04-15 16:35:19 -07:00

cma.h

mm: cma: allocation trigger

2015-04-14 16:49:00 -07:00

compaction.c

mm, compaction: prevent VM_BUG_ON when terminating freeing scanner

2016-08-06 12:58:59 -04:00

debug-pagealloc.c

…

debug.c

mm: account pmd page tables to the process

2015-02-11 17:06:04 -08:00

dmapool.c

…

early_ioremap.c

…

fadvise.c

vfs: remove get_xip_mem

2015-02-16 17:56:03 -08:00

failslab.c

…

filemap.c

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

2017-05-17 15:06:59 -04:00

frontswap.c

…

gup.c

mm: larger stack guard gap, between vmas

2017-06-28 18:57:15 -04:00

highmem.c

…

huge_memory.c

mm: numa: avoid waiting on freed migrated pages

2017-07-31 13:37:49 -04:00

hugetlb_cgroup.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

hugetlb.c

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

2017-05-17 15:07:44 -04:00

hwpoison-inject.c

mm/memory-failure: introduce get_hwpoison_page() for consistent refcount handling

2017-06-08 06:42:00 -04:00

init-mm.c

…

internal.h

mm: use 'unsigned int' for page order

2016-04-18 08:51:09 -04:00

interval_tree.c

…

Kconfig

mm: cma: debugfs interface

2015-04-14 16:49:00 -07:00

Kconfig.debug

…

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()

2015-07-21 10:10:03 -07:00

ksm.c

mm,ksm: fix endless looping in allocating memory when ksm enable

2016-12-21 22:45:42 -05:00

list_lru.c

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

2017-07-31 13:37:54 -04:00

maccess.c

…

madvise.c

vfs: remove get_xip_mem

2015-02-16 17:56:03 -08:00

Makefile

mm: move memtest under mm

2015-04-14 16:49:06 -07:00

memblock.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2016-04-18 08:51:09 -04:00

memcontrol.c

mm: memcontrol: reclaim when shrinking memory.high below usage

2016-04-18 08:51:02 -04:00

memory_hotplug.c

mm/memory_hotplug.c: set zone->wait_table to null after freeing it

2015-06-10 16:43:43 -07:00

memory-failure.c

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

2017-06-25 22:02:22 -04:00

memory.c

mm: larger stack guard gap, between vmas

2017-06-28 18:57:15 -04:00

mempolicy.c

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

2017-06-13 09:29:16 -04:00

mempool.c

mm/mempool.c: kasan: poison mempool elements

2015-04-15 16:35:20 -07:00

memtest.c

memtest: use phys_addr_t for physical addresses

2015-04-14 16:49:06 -07:00

migrate.c

mm: Export migrate_page_move_mapping and migrate_page_copy

2016-07-10 20:20:01 -04:00

mincore.c

mincore: apply page table walker on do_mincore()

2015-02-11 17:06:06 -08:00

mlock.c

mlock: fix mlock count can not decrease in race condition

2017-06-08 06:42:00 -04:00

mm_init.c

mm/mm_init.c: mark mminit_loglevel __meminitdata

2015-02-12 18:54:11 -08:00

mmap.c

mm: fix new crash in unmapped_area_topdown()

2017-06-28 18:57:50 -04:00

mmu_context.c

…

mmu_notifier.c

…

mmzone.c

mm: microoptimize zonelist operations

2015-02-11 17:06:02 -08:00

mprotect.c

mm: numa: preserve PTE write permissions across a NUMA hinting fault

2015-03-25 16:20:31 -07:00

mremap.c

mm/mremap.c: clean up goto just return ERR_PTR

2015-04-15 16:35:18 -07:00

msync.c

…

nobootmem.c

mm: page_alloc: pass PFN to __free_pages_bootmem

2016-04-18 08:51:09 -04:00

nommu.c

nommu: use __vfs_read()

2015-04-11 22:27:56 -04:00

oom_kill.c

mm/oom_kill.c: fix typo in comment

2015-04-15 16:35:16 -07:00

page_alloc.c

mm/page_alloc: fix nodes for reclaim in fast path

2017-05-17 15:06:59 -04:00

page_counter.c

mm: page_counter: pull "-1" handling out of page_counter_memparse()

2015-02-11 17:06:02 -08:00

page_ext.c

…

page_io.c

direct_IO: remove rw from a_ops->direct_IO()

2015-04-11 22:29:45 -04:00

page_isolation.c

mm: fix invalid node in alloc_migrate_target()

2016-07-10 23:06:57 -04:00

page_owner.c

mm/page_owner.c: remove unnecessary stack_trace field

2015-02-11 17:06:07 -08:00

page-writeback.c

writeback: use |1 instead of +1 to protect against div by zero

2015-04-23 10:36:33 -06:00

pagewalk.c

mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers

2015-03-25 16:20:30 -07:00

percpu-km.c

…

percpu-vm.c

…

percpu.c

percpu: acquire pcpu_lock when updating pcpu_nr_empty_pop_pages

2017-05-17 15:07:00 -04:00

pgtable-generic.c

mm: convert p[te|md]_mknonnuma and remaining page table manipulations

2015-02-12 18:54:08 -08:00

process_vm_access.c

ptrace: use fsuid, fsgid, effective creds for fs access checks

2016-04-11 22:07:35 -04:00

quicklist.c

…

readahead.c

…

rmap.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

shmem.c

fs: Give dentry to inode_change_ok() instead of inode

2016-12-23 08:56:35 -05:00

slab_common.c

mm: slub: add kernel address sanitizer support for slub allocator

2015-02-13 21:21:41 -08:00

slab.c

mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)

2015-10-22 14:43:27 -07:00

slab.h

slub: make dead caches discard free slabs immediately

2015-02-12 18:54:10 -08:00

slob.c

slob: make slob_alloc_node() static and remove EXPORT_SYMBOL()

2015-04-14 16:48:59 -07:00

slub.c

slub/memcg: cure the brainless abuse of sysfs attributes

2017-06-08 06:42:00 -04:00

sparse-vmemmap.c

…

sparse.c

…

swap_cgroup.c

mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()

2017-07-31 13:37:49 -04:00

swap_state.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

swap.c

4.1.28 Fix bad backport of 8f182270dfec "mm/swap.c: flush lru pvecs on compound page arrival"

2016-07-19 15:49:46 -04:00

swapfile.c

mm: remove rest of ACCESS_ONCE() usages

2015-04-15 16:35:18 -07:00

truncate.c

mm: rename deactivate_page to deactivate_file_page

2015-04-15 16:35:17 -07:00

util.c

mm: uninline and cleanup page-mapping related helpers

2015-04-15 16:35:19 -07:00

vmacache.c

…

vmalloc.c

mm/vmalloc: get rid of dirty bitmap inside vmap_block structure

2015-04-15 16:35:18 -07:00

vmpressure.c

mm: vmpressure: fix sending wrong events on underflow

2017-05-17 15:06:59 -04:00

vmscan.c

mm/vmscan.c: set correct defer count for shrinker

2017-01-12 20:56:57 -05:00

vmstat.c

vmstat: Reduce time interval to stat update on idle cpu

2015-02-11 17:06:07 -08:00

workingset.c

list_lru: add helpers to isolate items

2015-02-12 18:54:10 -08:00

zbud.c

mm/zpool: add name argument to create zpool

2015-02-12 18:54:12 -08:00

zpool.c

mm/zpool: add name argument to create zpool

2015-02-12 18:54:12 -08:00

zsmalloc.c

zsmalloc: fix migrate_zspage-zs_free race condition

2016-02-03 16:23:21 -05:00

zswap.c

mm/zpool: add name argument to create zpool

2015-02-12 18:54:12 -08:00