Michal Hocko f5e03a4989 memcg, shmem: fix shmem migration to use lrucare ... It has been reported that 965GM might trigger VM_BUG_ON_PAGE(!lrucare && PageLRU(oldpage), oldpage) in mem_cgroup_migrate when shmem wants to replace a swap cache page because of shmem_should_replace_page (the page is allocated from an inappropriate zone). shmem_replace_page expects that the oldpage is not on LRU list and calls mem_cgroup_migrate without lrucare. This is obviously incorrect because swapcache pages might be on the LRU list (e.g. swapin readahead page). Fix this by enabling lrucare for the migration in shmem_replace_page. Also clarify that lrucare should be used even if one of the pages might be on LRU list. The BUG_ON will trigger only when CONFIG_DEBUG_VM is enabled but even without that the migration code might leave the old page on an inappropriate memcg' LRU which is not that critical because the page would get removed with its last reference but it is still confusing. Fixes: 0a31bc97c8 ("mm: memcontrol: rewrite uncharge API") Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Chris Wilson <chris@chris-wilson.co.uk> Reported-by: Dave Airlie <airlied@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: <stable@vger.kernel.org> [3.17+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-02-05 13:35:29 -08:00
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backing-dev.c	Merge branch 'for-3.18/core' of git://git.kernel.dk/linux-block	2014-10-18 11:53:51 -07:00
balloon_compaction.c	mm/balloon_compaction: fix deflation when compaction is disabled	2014-10-29 16:33:15 -07:00
bootmem.c	mem-hotplug: reset node managed pages when hot-adding a new pgdat	2014-11-13 16:17:06 -08:00
cleancache.c
cma.c	mm: cma: split cma-reserved in dmesg log	2014-12-18 19:08:10 -08:00
compaction.c	mm, compaction: more focused lru and pcplists draining	2014-12-10 17:41:06 -08:00
debug-pagealloc.c	mm/debug-pagealloc: make debug-pagealloc boottime configurable	2014-12-13 12:42:48 -08:00
debug.c	mm: move page->mem_cgroup bad page handling into generic code	2014-12-10 17:41:09 -08:00
dmapool.c	mm/dmapool.c: fixed a brace coding style issue	2014-10-09 22:26:00 -04:00
early_ioremap.c	mm: create generic early_ioremap() support	2014-04-07 16:36:15 -07:00
fadvise.c	mm: fadvise: document the fadvise(FADV_DONTNEED) behaviour for partial pages	2014-12-13 12:42:49 -08:00
failslab.c
filemap_xip.c	mm/xip: share the i_mmap_rwsem	2014-12-13 12:42:45 -08:00
filemap.c	mm: get rid of radix tree gfp mask for pagecache_get_page	2014-12-29 12:45:45 -08:00
fremap.c	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2014-12-15 15:52:01 -08:00
frontswap.c	mm/frontswap.c: fix the condition in BUG_ON	2014-12-10 17:41:08 -08:00
gup.c	vm: add VM_FAULT_SIGSEGV handling support	2015-01-29 10:51:32 -08:00
highmem.c	mm/highmem: make kmap cache coloring aware	2014-08-06 18:01:22 -07:00
huge_memory.c	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2014-12-15 15:52:01 -08:00
hugetlb_cgroup.c	mm: hugetlb_cgroup: convert to lockless page counters	2014-12-10 17:41:04 -08:00
hugetlb.c	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2014-12-15 15:52:01 -08:00
hwpoison-inject.c	mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove_recursive	2014-08-06 18:01:19 -07:00
init-mm.c
internal.h	mm, compaction: always update cached scanner positions	2014-12-10 17:41:06 -08:00
interval_tree.c	mm: convert a few VM_BUG_ON callers to VM_BUG_ON_VMA	2014-10-09 22:25:57 -04:00
iov_iter.c	copy_from_iter_nocache()	2014-12-08 20:25:23 -05:00
Kconfig	mm/balloon_compaction: add vmstat counters and kpageflags bit	2014-10-09 22:26:01 -04:00
Kconfig.debug	mm/debug_pagealloc: remove obsolete Kconfig options	2015-01-08 15:10:52 -08:00
kmemcheck.c	mm/slab_common: move kmem_cache definition to internal header	2014-10-09 22:25:50 -04:00
kmemleak-test.c	mm/kmemleak-test.c: use pr_fmt for logging	2014-06-06 16:08:18 -07:00
kmemleak.c	mm: introduce kmemleak_update_trace()	2014-06-06 16:08:17 -07:00
ksm.c	vm: add VM_FAULT_SIGSEGV handling support	2015-01-29 10:51:32 -08:00
list_lru.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
maccess.c
madvise.c	VFS: Rename do_fallocate() to vfs_fallocate()	2014-11-07 16:17:44 -05:00
Makefile	mm/page_owner: keep track of page owners	2014-12-13 12:42:48 -08:00
memblock.c	mm/memblock.c: refactor functions to set/clear MEMBLOCK_HOTPLUG	2014-12-13 12:42:46 -08:00
memcontrol.c	memcg, shmem: fix shmem migration to use lrucare	2015-02-05 13:35:29 -08:00
memory_hotplug.c	mm, memory_hotplug/failure: drain single zone pcplists	2014-12-10 17:41:05 -08:00
memory-failure.c	mm: vmscan: invoke slab shrinkers from shrink_zone()	2014-12-13 12:42:48 -08:00
memory.c	vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than SIGBUS	2015-01-29 11:15:17 -08:00
mempolicy.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-12-19 18:19:19 -08:00
mempool.c	mm/mempool.c: update the kmemleak stack trace for mempool allocations	2014-06-06 16:08:17 -07:00
migrate.c	vm_area_operations: kill ->migrate()	2014-12-17 08:26:51 -05:00
mincore.c	mm: mincore: add hwpoison page handle	2014-12-13 12:42:46 -08:00
mlock.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 15:44:12 +02:00
mm_init.c
mmap.c	mm: fix corner case in anon_vma endless growing prevention	2015-01-11 11:45:10 -08:00
mmu_context.c
mmu_notifier.c	mmu_notifier: add the callback for mmu_notifier_invalidate_range()	2014-11-13 13:46:09 +11:00
mmzone.c
mprotect.c	mm: softdirty: enable write notifications on VMAs after VM_SOFTDIRTY cleared	2014-10-14 02:18:28 +02:00
mremap.c	Merge git://git.kvack.org/~bcrl/aio-next	2014-12-14 13:36:57 -08:00
msync.c	msync: fix incorrect fstart calculation	2014-07-03 09:21:53 -07:00
nobootmem.c	mem-hotplug: reset node managed pages when hot-adding a new pgdat	2014-11-13 16:17:06 -08:00
nommu.c	mm: export "high_memory" symbol on !MMU	2015-02-05 13:35:29 -08:00
oom_kill.c	oom: kill the insufficient and no longer needed PT_TRACE_EXIT check	2014-12-13 12:42:49 -08:00
page_alloc.c	mm: page_alloc: embed OOM killing naturally into allocation slowpath	2015-01-26 13:37:18 -08:00
page_counter.c	mm: memcontrol: remove obsolete kmemcg pinning tricks	2014-12-10 17:41:05 -08:00
page_ext.c	mm/page_owner: keep track of page owners	2014-12-13 12:42:48 -08:00
page_io.c	fix __swap_writepage() compile failure on old gcc versions	2014-06-14 19:30:48 -05:00
page_isolation.c	mm, page_isolation: drain single zone pcplists	2014-12-10 17:41:05 -08:00
page_owner.c	mm/page_owner: correct owner information for early allocated pages	2014-12-13 12:42:48 -08:00
page-writeback.c	mm: protect set_page_dirty() from ongoing truncation	2015-01-08 15:10:51 -08:00
pagewalk.c	mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range	2015-02-05 13:35:29 -08:00
percpu-km.c	percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated	2014-09-02 14:46:05 -04:00
percpu-vm.c	percpu: move region iterations out of pcpu_[de]populate_chunk()	2014-09-02 14:46:02 -04:00
percpu.c	percpu: off by one in BUG_ON()	2014-10-29 10:34:34 -04:00
pgtable-generic.c	mm: actually clear pmd_numa before invalidating	2014-08-29 16:28:15 -07:00
process_vm_access.c	start adding the tag to iov_iter	2014-05-06 17:32:49 -04:00
quicklist.c
readahead.c	mm/readahead.c: remove unused file_ra_state from count_history_pages	2014-08-06 18:01:15 -07:00
rmap.c	mm: prevent endless growth of anon_vma hierarchy	2015-01-08 15:10:51 -08:00
shmem.c	memcg, shmem: fix shmem migration to use lrucare	2015-02-05 13:35:29 -08:00
slab_common.c	memcg: use generic slab iterators for showing slabinfo	2014-12-10 17:41:07 -08:00
slab.c	slab: fix cpuset check in fallback_alloc	2014-12-13 12:42:53 -08:00
slab.h	memcg: use generic slab iterators for showing slabinfo	2014-12-10 17:41:07 -08:00
slob.c	mm/sl[ao]b: always track caller in kmalloc_(node_)track_caller()	2014-10-09 22:25:50 -04:00
slub.c	slub: fix cpuset check in get_any_partial	2014-12-13 12:42:53 -08:00
sparse-vmemmap.c
sparse.c	mm: use macros from compiler.h instead of __attribute__((...))	2014-04-07 16:35:54 -07:00
swap_cgroup.c	mm: page_cgroup: rename file to mm/swap_cgroup.c	2014-12-10 17:41:09 -08:00
swap_state.c	mm: page_cgroup: rename file to mm/swap_cgroup.c	2014-12-10 17:41:09 -08:00
swap.c	mm: memcontrol: do not kill uncharge batching in free_pages_and_swap_cache	2014-10-09 22:25:59 -04:00
swapfile.c	mm: page_cgroup: rename file to mm/swap_cgroup.c	2014-12-10 17:41:09 -08:00
truncate.c	mm: Fix comment before truncate_setsize()	2014-11-07 08:29:25 +11:00
util.c	proc/maps: make vm_is_stack() logic namespace-friendly	2014-10-09 22:25:50 -04:00
vmacache.c	mm,vmacache: count number of system-wide flushes	2014-12-13 12:42:48 -08:00
vmalloc.c	mm/vmalloc.c: fix memory ordering bug	2014-12-13 12:42:49 -08:00
vmpressure.c	mm/vmpressure.c: fix race in vmpressure_work_fn()	2014-12-02 17:32:07 -08:00
vmscan.c	mm/vmscan: fix highidx argument type	2015-01-26 13:37:18 -08:00
vmstat.c	mm,vmacache: count number of system-wide flushes	2014-12-13 12:42:48 -08:00
workingset.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
zbud.c	mm/zbud: init user ops only when it is needed	2014-12-13 12:42:51 -08:00
zpool.c	mm/zpool: use prefixed module loading	2014-08-29 16:28:16 -07:00
zsmalloc.c	mm/zsmalloc: adjust order of functions	2014-12-18 19:08:11 -08:00
zswap.c	mm/zswap: delete unnecessary check before calling free_percpu()	2014-12-13 12:42:50 -08:00