Johannes Weiner 6568d4a9c9 mm: memcg: update the correct soft limit tree during migration ... end_migration() passes the old page instead of the new page to commit the charge. This page descriptor is not used for committing itself, though, since we also pass the (correct) page_cgroup descriptor. But it's used to find the soft limit tree through the page's zone, so the soft limit tree of the old page's zone is updated instead of that of the new page's, which might get slightly out of date until the next charge reaches the ratelimit point. This glitch has been present since 5564e88 ("memcg: condense page_cgroup-to-page lookup points"). This fixes a bug that I introduced in 2.6.38. It's benign enough (to my knowledge) that we probably don't want this for stable. Reported-by: Hugh Dickins <hughd@google.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-01-23 08:38:48 -08:00
..
backing-dev.c	freezer: implement and use kthread_freezable_should_stop()	2011-11-21 12:32:23 -08:00
bootmem.c	mm: bootmem: try harder to free pages in bulk	2012-01-10 16:30:45 -08:00
bounce.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
cleancache.c	mm: cleancache core ops functions and config	2011-05-26 10:01:36 -06:00
compaction.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: fix implicit stat.h usage in dmapool.c	2011-10-31 09:20:12 -04:00
fadvise.c	fadvise: only initiate writeback for specified range with FADV_DONTNEED	2012-01-10 16:30:43 -08:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap_xip.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
filemap.c	memcg: add mem_cgroup_replace_page_cache() to fix LRU issue	2012-01-12 20:13:04 -08:00
fremap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
highmem.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
huge_memory.c	memcg: fix split_huge_page_refcounts()	2012-01-12 20:13:09 -08:00
hugetlb.c	mm/hugetlb.c: avoid bogus counter of surplus huge page	2012-01-10 16:30:45 -08:00
hwpoison-inject.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: thp: tail page refcounting fix	2011-11-02 16:06:57 -07:00
Kconfig	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -08:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c	kmemleak: remove memset by using kzalloc	2011-01-27 18:31:51 +00:00
kmemleak.c	kmemleak: Add support for memory hotplug	2011-12-02 16:12:42 +00:00
ksm.c	memcg: clear pc->mem_cgroup if necessary.	2012-01-12 20:13:07 -08:00
maccess.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
madvise.c	fs: kill i_alloc_sem	2011-07-20 20:47:46 -04:00
Makefile	Cross Memory Attach	2011-10-31 17:30:44 -07:00
memblock.c	memblock: Reimplement memblock allocation using reverse free area iterator	2011-12-08 10:22:09 -08:00
memcontrol.c	mm: memcg: update the correct soft limit tree during migration	2012-01-23 08:38:48 -08:00
memory_hotplug.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
memory-failure.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
memory.c	thp: add tlb_remove_pmd_tlb_entry	2012-01-12 20:13:08 -08:00
mempolicy.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
mempool.c	mempool: fix first round failure behavior	2012-01-10 16:30:45 -08:00
migrate.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
mincore.c	mm: clarify the radix_tree exceptional cases	2011-08-03 14:25:24 -10:00
mlock.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmap.c	mm: simplify find_vma_prev()	2012-01-10 16:30:44 -08:00
mmu_context.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmu_notifier.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmzone.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
mprotect.c	thp: mprotect: transparent huge page support	2011-01-13 17:32:44 -08:00
mremap.c	mremap: enforce rmap src/dst vma ordering in case of vma_merge() succeeding in copy_vma()	2012-01-10 16:30:44 -08:00
msync.c	sanitize vfs_fsync calling conventions	2010-05-21 18:31:21 -04:00
nobootmem.c	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -08:00
nommu.c	xen: map foreign pages for shared rings by updating the PTEs directly	2011-11-16 12:13:08 -05:00
oom_kill.c	mm: unify remaining mem_cont, mem, etc. variable names to memcg	2012-01-12 20:13:06 -08:00
page_alloc.c	mm: __count_immobile_pages(): make sure the node is online	2012-01-23 08:38:47 -08:00
page_cgroup.c	page_cgroup: drop multi CONFIG_MEMORY_HOTPLUG	2012-01-12 20:13:08 -08:00
page_io.c	block: kill off REQ_UNPLUG	2011-03-10 08:52:27 +01:00
page_isolation.c	mm: page_isolation: codeclean fix comment and rm unneeded val init	2010-10-26 16:52:11 -07:00
page-writeback.c	Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux	2012-01-10 16:59:59 -08:00
pagewalk.c	pagewalk: fix code comment for THP	2011-07-25 20:57:09 -07:00
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c	percpu: fix chunk range calculation	2011-11-22 08:09:46 -08:00
percpu.c	Kmemleak patches	2012-01-14 18:11:11 -08:00
pgtable-generic.c	mm/pgtable-generic.c: fix CONFIG_SWAP=n build	2011-01-26 10:49:58 +10:00
prio_tree.c	sanitize <linux/prefetch.h> usage	2011-05-20 12:50:29 -07:00
process_vm_access.c	Cross Memory Attach	2011-10-31 17:30:44 -07:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
rmap.c	mm: unify remaining mem_cont, mem, etc. variable names to memcg	2012-01-12 20:13:06 -08:00
shmem.c	vfs: switch ->show_options() to struct dentry *	2012-01-06 23:19:54 -05:00
slab.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-01-11 18:52:23 -08:00
slob.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
slub.c	mm,x86,um: move CMPXCHG_DOUBLE config option	2012-01-12 20:13:03 -08:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
swap_state.c	memcg: clear pc->mem_cgroup if necessary.	2012-01-12 20:13:07 -08:00
swap.c	mm: remove del_page_from_lru, add page_off_lru	2012-01-12 20:13:10 -08:00
swapfile.c	mm: unify remaining mem_cont, mem, etc. variable names to memcg	2012-01-12 20:13:06 -08:00
thrash.c	mm/thrash.c: quiet sparse noise	2011-10-31 17:30:50 -07:00
truncate.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
util.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
vmalloc.c	mm/vmalloc.c: eliminate extra loop in pcpu_get_vm_areas error path	2012-01-12 20:13:10 -08:00
vmscan.c	mm: rearrange putback_inactive_pages	2012-01-12 20:13:10 -08:00
vmstat.c	mm,x86,um: move CMPXCHG_LOCAL config option	2012-01-12 20:13:03 -08:00