Johannes Weiner 1f14c1ac19 mm: memcg: do not allow task about to OOM kill to bypass the limit ... Commit 4942642080 ("mm: memcg: handle non-error OOM situations more gracefully") allowed tasks that already entered a memcg OOM condition to bypass the memcg limit on subsequent allocation attempts hoping this would expedite finishing the page fault and executing the kill. David Rientjes is worried that this breaks memcg isolation guarantees and since there is no evidence that the bypass actually speeds up fault processing just change it so that these subsequent charge attempts fail outright. The notable exception being __GFP_NOFAIL charges which are required to bypass the limit regardless. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-bt: David Rientjes <rientjes@google.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-12-12 18:19:26 -08:00
..
backing-dev.c
balloon_compaction.c
bootmem.c	mm/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
bounce.c
cleancache.c
compaction.c	mm/compaction.c: update comment about zone lock in isolate_freepages_block	2013-11-13 12:09:03 +09:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
filemap.c	mm: drop actor argument of do_generic_file_read()	2013-11-15 09:32:13 +09:00
fremap.c
frontswap.c
highmem.c
huge_memory.c	thp: move preallocated PTE page table on move_huge_pmd()	2013-12-12 18:19:26 -08:00
hugetlb_cgroup.c
hugetlb.c	mm: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-11-15 16:47:22 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
ksm.c	ksm: remove redundant __GFP_ZERO from kcalloc	2013-11-13 12:09:02 +09:00
list_lru.c	mm: list_lru: fix almost infinite loop causing effective livelock	2013-10-30 12:57:46 -07:00
maccess.c
madvise.c
Makefile
memblock.c	mm/memblock.c: introduce bottom-up allocation mode	2013-11-13 12:09:08 +09:00
memcontrol.c	mm: memcg: do not allow task about to OOM kill to bypass the limit	2013-12-12 18:19:26 -08:00
memory_hotplug.c	mem-hotplug: introduce movable_node boot option	2013-11-13 12:09:09 +09:00
memory-failure.c	kfifo API type safety	2013-11-15 09:32:23 +09:00
memory.c	Revert "mm: create a separate slab for page->ptl allocation"	2013-11-20 14:41:47 -08:00
mempolicy.c	mm, mempolicy: silence gcc warning	2013-11-21 16:42:27 -08:00
mempool.c
migrate.c	mm: thp: give transparent hugepage code a separate copy_page	2013-11-21 16:42:27 -08:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c	mm: numa: return the number of base pages altered by protection changes	2013-11-13 12:09:11 +09:00
mremap.c	mm: revert mremap pud_free anti-fix	2013-10-16 21:35:53 -07:00
msync.c
nobootmem.c	mm/nobootmem.c: have __free_pages_memory() free in larger chunks.	2013-11-13 12:09:04 +09:00
nommu.c	Merge branch 'akpm' (patches from Andrew Morton)	2013-11-13 15:45:43 +09:00
oom_kill.c	mm: convert mm->nr_ptes to atomic_long_t	2013-11-15 09:32:14 +09:00
page_alloc.c	mm/page_alloc.c: fix comment in zlc_setup()	2013-11-13 12:09:11 +09:00
page_cgroup.c
page_io.c
page_isolation.c
page-writeback.c	writeback: fix negative bdi max pause	2013-10-16 21:35:53 -07:00
pagewalk.c	mm/pagewalk.c: fix walk_page_range() access of wrong PTEs	2013-10-30 14:27:03 -07:00
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c	mm: convert the rest to new page table lock api	2013-11-15 09:32:15 +09:00
process_vm_access.c
quicklist.c
readahead.c	readahead: fix sequential read cache miss detection	2013-11-13 12:09:09 +09:00
rmap.c	mm, hugetlb: convert hugetlbfs to use split pmd lock	2013-11-15 09:32:14 +09:00
shmem.c	security: shmem: implement kernel private shmem inodes	2013-12-02 11:24:19 +00:00
slab_common.c	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
slab.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-11-22 08:10:34 -08:00
slab.h	memcg, kmem: rename cache_from_memcg to cache_from_memcg_idx	2013-11-13 12:09:10 +09:00
slob.c
slub.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2013-11-22 08:10:34 -08:00
sparse-vmemmap.c
sparse.c	mm/sparsemem: fix a bug in free_map_bootmem when CONFIG_SPARSEMEM_VMEMMAP	2013-11-13 12:09:06 +09:00
swap_state.c
swap.c	mm: hugetlbfs: fix hugetlbfs optimization	2013-11-21 16:42:27 -08:00
swapfile.c	frontswap: enable call to invalidate area on swapoff	2013-11-13 12:09:07 +09:00
truncate.c
util.c	mm: factor commit limit calculation	2013-11-13 12:09:11 +09:00
vmalloc.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
vmpressure.c
vmscan.c	mm/vmscan.c: don't forget to free shrinker->nr_deferred	2013-10-16 21:35:52 -07:00
vmstat.c	mm: numa: return the number of base pages altered by protection changes	2013-11-13 12:09:11 +09:00
zbud.c
zswap.c	mm/zswap: refactor the get/put routines	2013-11-13 12:09:11 +09:00