Johannes Weiner 0030f535a5 mm: memcg: fix compaction/migration failing due to memcg limits ... Compaction (and page migration in general) can currently be hindered through pages being owned by memory cgroups that are at their limits and unreclaimable. The reason is that the replacement page is being charged against the limit while the page being replaced is also still charged. But this seems unnecessary, given that only one of the two pages will still be in use after migration finishes. This patch changes the memcg migration sequence so that the replacement page is not charged. Whatever page is still in use after successful or failed migration gets to keep the charge of the page that was going to be replaced. The replacement page will still show up temporarily in the rss/cache statistics, this can be fixed in a later patch as it's less urgent. Reported-by: David Rientjes <rientjes@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> Cc: Hugh Dickins <hughd@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Wanpeng Li <liwp.linux@gmail.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-07-31 18:42:48 -07:00
..
backing-dev.c	mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads	2012-07-31 18:42:40 -07:00
bootmem.c	bootmem: make ___alloc_bootmem_node_nopanic() really nopanic	2012-07-17 16:21:29 -07:00
bounce.c	bounce: allow use of bounce pool via config option	2012-07-18 16:40:35 -04:00
cleancache.c	->encode_fh() API change	2012-05-29 23:28:33 -04:00
compaction.c	mm: have order > 0 compaction start off where it left	2012-07-31 18:42:43 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c	mm, fadvise: don't return -EINVAL when filesystem cannot implement fadvise()	2012-07-31 18:42:42 -07:00
failslab.c
filemap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-06-01 10:34:35 -07:00
filemap_xip.c	fs: introduce inode operation ->update_time	2012-06-01 12:07:25 -04:00
fremap.c
frontswap.c	mm/frontswap: cleanup doc and comment error	2012-07-23 11:16:20 -04:00
highmem.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
huge_memory.c	mm/memcg: apply add/del_page to lruvec	2012-05-29 16:22:28 -07:00
hugetlb.c	hugetlb/cgroup: assign the page hugetlb cgroup when we move the page to active list.	2012-07-31 18:42:41 -07:00
hugetlb_cgroup.c	hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate	2012-07-31 18:42:41 -07:00
hwpoison-inject.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
init-mm.c
internal.h	netvm: allow skb allocation to use PFMEMALLOC reserves	2012-07-31 18:42:46 -07:00
Kconfig	mm: factor out memory isolate functions	2012-07-31 18:42:45 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c	mm: Hold a file reference in madvise_remove	2012-07-06 10:34:38 -07:00
Makefile	mm: factor out memory isolate functions	2012-07-31 18:42:45 -07:00
memblock.c	mm/memblock.c:memblock_double_array(): cosmetic cleanups	2012-07-31 18:42:41 -07:00
memcontrol.c	mm: memcg: fix compaction/migration failing due to memcg limits	2012-07-31 18:42:48 -07:00
memory-failure.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
memory.c	mm/memory.c:print_vma_addr(): call up_read(&mm->mmap_sem) directly	2012-07-31 18:42:43 -07:00
memory_hotplug.c	mm/hotplug: free zone->pageset when a zone becomes empty	2012-07-31 18:42:44 -07:00
mempolicy.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-07-30 11:32:24 -07:00
mempool.c
migrate.c	mm: memcg: fix compaction/migration failing due to memcg limits	2012-07-31 18:42:48 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm: account the total_vm in the vm_stat_account()	2012-07-31 18:42:39 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
mprotect.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-03-22 09:04:48 -07:00
mremap.c	mm: account the total_vm in the vm_stat_account()	2012-07-31 18:42:39 -07:00
msync.c
nobootmem.c	memblock: free allocated memblock_reserved_regions later	2012-07-11 16:04:50 -07:00
nommu.c	nommu: fix compilation of nommu.c	2012-06-04 17:17:31 -04:00
oom_kill.c	mm, memcg: move all oom handling to memcontrol.c	2012-07-31 18:42:45 -07:00
page-writeback.c	writeback: Fix some comment errors	2012-06-09 19:54:47 +08:00
page_alloc.c	mm: throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage	2012-07-31 18:42:46 -07:00
page_cgroup.c	memcg: rename config variables	2012-07-31 18:42:43 -07:00
page_io.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
page_isolation.c	memory-hotplug: fix kswapd looping forever problem	2012-07-31 18:42:45 -07:00
pagewalk.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu-km.c
percpu-vm.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu.c	kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP	2012-05-09 10:13:29 -07:00
pgtable-generic.c	arch/tile: allow building Linux with transparent huge pages enabled	2012-05-25 12:48:21 -04:00
prio_tree.c
process_vm_access.c	aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()	2012-05-31 17:49:32 -07:00
quicklist.c
readahead.c	mm: move readahead syscall to mm/readahead.c	2012-05-29 16:22:23 -07:00
rmap.c	mm: remove swap token code	2012-05-29 16:22:19 -07:00
shmem.c	don't pass nameidata to ->create()	2012-07-14 16:34:47 +04:00
slab.c	mm: micro-optimise slab to avoid a function call	2012-07-31 18:42:46 -07:00
slab.h	mm, sl[aou]b: Use a common mutex definition	2012-07-09 12:13:41 +03:00
slab_common.c	mm: Fix build warning in kmem_cache_create()	2012-07-30 13:15:40 +03:00
slob.c	slob: Fix early boot kernel crash	2012-07-12 10:13:22 +03:00
slub.c	mm: slub: optimise the SLUB fast path to avoid pfmemalloc checks	2012-07-31 18:42:45 -07:00
sparse-vmemmap.c
sparse.c	mm: setup pageblock_order before it's used by sparsemem	2012-07-31 18:42:43 -07:00
swap.c	mm: add support for direct_IO to highmem pages	2012-07-31 18:42:47 -07:00
swap_state.c	mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages	2012-07-31 18:42:47 -07:00
swapfile.c	swapfile: avoid dereferencing bd_disk during swap_entry_free for network storage	2012-07-31 18:42:48 -07:00
truncate.c	mm/fs: remove truncate_range	2012-05-29 16:22:23 -07:00
util.c	new helper: vm_mmap_pgoff()	2012-06-01 10:37:18 -04:00
vmalloc.c	mm: make vb_alloc() more foolproof	2012-07-31 18:42:39 -07:00
vmscan.c	mm: account for the number of times direct reclaimers get throttled	2012-07-31 18:42:46 -07:00
vmstat.c	mm: account for the number of times direct reclaimers get throttled	2012-07-31 18:42:46 -07:00