Mel Gorman 9ee493ce0a mm: page allocator: drain per-cpu lists after direct reclaim allocation fails ... When under significant memory pressure, a process enters direct reclaim and immediately afterwards tries to allocate a page. If it fails and no further progress is made, it's possible the system will go OOM. However, on systems with large amounts of memory, it's possible that a significant number of pages are on per-cpu lists and inaccessible to the calling process. This leads to a process entering direct reclaim more often than it should increasing the pressure on the system and compounding the problem. This patch notes that if direct reclaim is making progress but allocations are still failing that the system is already under heavy pressure. In this case, it drains the per-cpu lists and tries the allocation a second time before continuing. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-09-09 18:57:25 -07:00
..
backing-dev.c	writeback: avoid unnecessary calculation of bdi dirty thresholds	2010-08-12 08:43:29 -07:00
bootmem.c	x86,nobootmem: make alloc_bootmem_node fall back to other node when 32bit numa is used	2010-07-20 16:25:40 -07:00
bounce.c	bounce: call flush_dcache_page() after bounce_copy_vec()	2010-09-09 18:57:25 -07:00
compaction.c	mm: compaction: handle active and inactive fairly in too_many_isolated	2010-09-09 18:57:24 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c	readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM	2010-03-06 11:26:25 -08:00
failslab.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
filemap_xip.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
filemap.c	gcc-4.6: mm: fix unused but set warnings	2010-08-09 20:44:58 -07:00
fremap.c	mm: clean up mm_counter	2010-03-06 11:26:23 -08:00
highmem.c	mm,kdb,kgdb: Add a debug reference for the kdb kmap usage	2010-08-05 09:22:24 -05:00
hugetlb.c	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2010-08-12 10:15:10 -07:00
hwpoison-inject.c	HWPOISON, hugetlb: support hwpoison injection for hugepage	2010-08-11 09:23:11 +02:00
init-mm.c	mm: provide init_mm mm_context initializer	2010-08-09 20:44:54 -07:00
internal.h
Kconfig	mm: avoid warning when COMPACTION is selected	2010-09-09 18:57:24 -07:00
Kconfig.debug
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c
kmemleak.c	kmemleak: Fix typo in the comment	2010-08-08 21:57:23 +01:00
ksm.c	mm: fix swapin race condition	2010-09-09 18:57:24 -07:00
maccess.c
madvise.c
Makefile	lmb: rename to memblock	2010-07-14 17:14:00 +10:00
memblock.c	memblock: Fix memblock_is_region_reserved() to return a boolean	2010-08-09 11:21:38 +10:00
memcontrol.c	memcg: convert to use zone_to_nid() from bare zone->zone_pgdat->node_id	2010-08-11 08:59:19 -07:00
memory_hotplug.c	memory hotplug: fix next block calculation in is_removable	2010-09-09 18:57:24 -07:00
memory-failure.c	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2010-08-12 10:15:10 -07:00
memory.c	mm: fix swapin race condition	2010-09-09 18:57:24 -07:00
mempolicy.c	mempolicy: reduce stack size of migrate_pages()	2010-08-09 20:44:58 -07:00
mempool.c
migrate.c	mm: extend KSM refcounts to the anon_vma root	2010-08-09 20:44:55 -07:00
mincore.c	mincore: do nested page table walks	2010-05-25 08:06:58 -07:00
mlock.c	mm: Move vma_stack_continue into mm.h	2010-09-09 09:05:06 -07:00
mm_init.c
mmap.c	guard page for stacks that grow upwards	2010-08-24 12:13:20 -07:00
mmu_context.c	exit: fix oops in sync_mm_rss	2010-03-24 16:31:21 -07:00
mmu_notifier.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
mmzone.c	mm: page allocator: calculate a better estimate of NR_FREE_PAGES when memory is low and kswapd is awake	2010-09-09 18:57:25 -07:00
mprotect.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
mremap.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
msync.c	sanitize vfs_fsync calling conventions	2010-05-21 18:31:21 -04:00
nommu.c	mm: make the vma list be doubly linked	2010-08-21 08:49:21 -07:00
oom_kill.c	oom: __task_cred() need rcu_read_lock()	2010-08-20 09:34:55 -07:00
page_alloc.c	mm: page allocator: drain per-cpu lists after direct reclaim allocation fails	2010-09-09 18:57:25 -07:00
page_cgroup.c	kmemleak: Annotate false positive in init_section_page_cgroup()	2010-07-19 11:54:14 +01:00
page_io.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
page_isolation.c
page-writeback.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2010-08-28 14:07:20 -07:00
pagewalk.c	pagemap: fix pfn calculation for hugepage	2010-04-07 08:38:04 -07:00
percpu_up.c	percpu: add __percpu notations to UP allocator	2010-08-07 14:20:53 +02:00
percpu-km.c	percpu: implement kernel memory based chunk allocation	2010-05-01 08:30:50 +02:00
percpu-vm.c	percpu: move vmalloc based chunk management into percpu-vm.c	2010-05-01 08:30:50 +02:00
percpu.c	percpu: fix a mismatch between code and comment	2010-08-27 11:36:19 +02:00
prio_tree.c
quicklist.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
readahead.c	readahead.c: fix comment	2010-05-25 08:07:00 -07:00
rmap.c	mm: fix hang on anon_vma->root->lock	2010-08-28 13:54:12 -07:00
shmem.c	shmem: put_super must percpu_counter_destroy	2010-08-17 18:33:11 -07:00
slab.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2010-08-22 10:08:52 -07:00
slob.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2010-08-06 11:44:08 -07:00
slub.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2010-08-06 11:44:08 -07:00
sparse-vmemmap.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sparse.c	sparsemem: on no vmemmap path put mem_map on node high too	2010-05-25 08:06:56 -07:00
swap_state.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
swap.c	mm: export lru_cache_add_*() to modules	2010-05-25 15:06:06 +02:00
swapfile.c	swap: discard while swapping only if SWAP_FLAG_DISCARD	2010-09-09 18:57:25 -07:00
thrash.c
truncate.c	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
util.c	mm: use memdup_user	2010-08-09 20:44:54 -07:00
vmalloc.c	Merge branch 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen	2010-08-12 09:09:41 -07:00
vmscan.c	memcg: remove nid and zid argument from mem_cgroup_soft_limit_reclaim()	2010-08-11 08:59:19 -07:00
vmstat.c	mm: page allocator: calculate a better estimate of NR_FREE_PAGES when memory is low and kswapd is awake	2010-09-09 18:57:25 -07:00