David Rientjes fb794bcbb4 mm, oom: remove unnecessary exit_state check ... The oom killer scans each process and determines whether it is eligible for oom kill or whether the oom killer should abort because of concurrent memory freeing. It will abort when an eligible process is found to have TIF_MEMDIE set, meaning it has already been oom killed and we're waiting for it to exit. Processes with task->mm == NULL should not be considered because they are either kthreads or have already detached their memory and killing them would not lead to memory freeing. That memory is only freed after exit_mm() has returned, however, and not when task->mm is first set to NULL. Clear TIF_MEMDIE after exit_mm()'s mmput() so that an oom killed process is no longer considered for oom kill, but only until exit_mm() has returned. This was fragile in the past because it relied on exit_notify() to be reached before no longer considering TIF_MEMDIE processes. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-08-06 18:01:21 -07:00
..
backing-dev.c	arch: Mass conversion of smp_mb__*()	2014-04-18 14:20:48 +02:00
balloon_compaction.c	mm: print more details for bad_page()	2014-01-23 16:36:50 -08:00
bootmem.c	mm/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
cleancache.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
cma.c	mm, CMA: clean-up log message	2014-08-06 18:01:16 -07:00
compaction.c	mm, compaction: properly signal and act upon lock and need_sched() contention	2014-06-04 16:54:11 -07:00
debug-pagealloc.c
dmapool.c	mm/dmapool.c: reuse devres_release() to free resources	2014-06-04 16:54:08 -07:00
early_ioremap.c	mm: create generic early_ioremap() support	2014-04-07 16:36:15 -07:00
fadvise.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
failslab.c
filemap_xip.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
filemap.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
fremap.c	mm: mark remap_file_pages() syscall as deprecated	2014-06-06 16:08:17 -07:00
frontswap.c	swap: change swap_list_head to plist, add swap_avail_head	2014-06-04 16:54:07 -07:00
gup.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
highmem.c	Some nice cleanups, and even a patch my wife did as a "live" demo for	2012-12-20 08:37:05 -08:00
huge_memory.c	mm, thp: only collapse hugepages to nodes with affinity for zone_reclaim_mode	2014-08-06 18:01:20 -07:00
hugetlb_cgroup.c	cgroup: replace cgroup_add_cftypes() with cgroup_add_legacy_cftypes()	2014-07-15 11:05:09 -04:00
hugetlb.c	mm: fix potential infinite loop in dissolve_free_huge_pages()	2014-08-06 18:01:21 -07:00
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/internal.h: use nth_page	2014-08-06 18:01:16 -07:00
interval_tree.c	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
iov_iter.c	bio_vec-backed iov_iter	2014-05-06 17:39:45 -04:00
Kconfig	CMA: generalize CMA reserved area management functionality	2014-08-06 18:01:16 -07:00
Kconfig.debug
kmemcheck.c
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	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
list_lru.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
maccess.c
madvise.c	mm: update the description for madvise_remove	2014-08-06 18:01:18 -07:00
Makefile	CMA: generalize CMA reserved area management functionality	2014-08-06 18:01:16 -07:00
memblock.c	mm/memblock.c: call kmemleak directly from memblock_(alloc|free)	2014-06-06 16:08:17 -07:00
memcontrol.c	mm: memcontrol: do not acquire page_cgroup lock for kmem pages	2014-08-06 18:01:17 -07:00
memory_hotplug.c	memory-hotplug: add zone_for_memory() for selecting zone for new memory	2014-08-06 18:01:21 -07:00
memory-failure.c	hwpoison: fix race with changing page during offlining	2014-08-06 18:01:19 -07:00
memory.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
mempolicy.c	Merge branch 'for-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-07-10 11:38:23 -07:00
mempool.c	mm/mempool.c: update the kmemleak stack trace for mempool allocations	2014-06-06 16:08:17 -07:00
migrate.c	mm: fix direct reclaim writeback regression	2014-07-26 14:38:50 -07:00
mincore.c	mm + fs: prepare for non-page entries in page cache radix trees	2014-04-03 16:21:00 -07:00
mlock.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
mm_init.c	mm: bring back /sys/kernel/mm	2014-01-27 21:02:39 -08:00
mmap.c	mm: catch memory commitment underflow	2014-08-06 18:01:19 -07:00
mmu_context.c	sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm	2014-02-21 08:50:17 +01:00
mmu_notifier.c	mm: audit/fix non-modular users of module_init in core code	2014-01-23 16:36:52 -08:00
mmzone.c	mm: numa: Change page last {nid,pid} into {cpu,pid}	2013-10-09 14:47:45 +02:00
mprotect.c	mm: move mmu notifier call from change_protection to change_pmd_range	2014-04-07 16:35:50 -07:00
mremap.c	mm, thp: close race between mremap() and split_huge_page()	2014-05-11 17:55:48 +09:00
msync.c	msync: fix incorrect fstart calculation	2014-07-03 09:21:53 -07:00
nobootmem.c	mm/memblock.c: call kmemleak directly from memblock_(alloc|free)	2014-06-06 16:08:17 -07:00
nommu.c	mm: nommu: per-thread vma cache fix	2014-06-23 16:47:43 -07:00
oom_kill.c	mm, oom: remove unnecessary exit_state check	2014-08-06 18:01:21 -07:00
page_alloc.c	mm, thp: restructure thp avoidance of light synchronous migration	2014-08-06 18:01:21 -07:00
page_cgroup.c	mm/page_cgroup.c: mark functions as static	2014-04-03 16:21:02 -07:00
page_io.c	fix __swap_writepage() compile failure on old gcc versions	2014-06-14 19:30:48 -05:00
page_isolation.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
page-writeback.c	mm, writeback: prevent race when calculating dirty limits	2014-08-06 18:01:21 -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	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu.c	percpu: Use ALIGN macro instead of hand coding alignment calculation	2014-06-19 11:00:27 -04:00
pgtable-generic.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
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/rmap.c: fix pgoff calculation to handle hugepage correctly	2014-07-23 15:10:54 -07:00
shmem.c	mm/shmem.c: remove the unused gfp arg to shmem_add_to_page_cache()	2014-08-06 18:01:20 -07:00
slab_common.c	mm: move slab related stuff from util.c to slab_common.c	2014-08-06 18:01:15 -07:00
slab.c	mm/slab.c: fix comments	2014-08-06 18:01:15 -07:00
slab.h	slab: convert last use of __FUNCTION__ to __func__	2014-08-06 18:01:15 -07:00
slob.c	slab: get_online_mems for kmem_cache_{create,destroy,shrink}	2014-06-04 16:53:59 -07:00
slub.c	slub: remove kmemcg id from create_unique_id	2014-08-06 18:01:21 -07:00
sparse-vmemmap.c	mm/sparse: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
sparse.c	mm: use macros from compiler.h instead of __attribute__((...))	2014-04-07 16:35:54 -07:00
swap_state.c	mm: page_alloc: convert hot/cold parameter and immediate callers to bool	2014-06-04 16:54:09 -07:00
swap.c	mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated	2014-08-06 18:01:20 -07:00
swapfile.c	mm/swapfile.c: delete the "last_in_cluster < scan_base" loop in the body of scan_swap_map()	2014-06-04 16:54:12 -07:00
truncate.c	mm/fs: fix pessimization in hole-punching pagecache	2014-07-23 15:10:55 -07:00
util.c	mm: move slab related stuff from util.c to slab_common.c	2014-08-06 18:01:15 -07:00
vmacache.c	mm,vmacache: optimize overflow system-wide flushing	2014-06-04 16:53:57 -07:00
vmalloc.c	mm/vmalloc.c: clean up map_vm_area third argument	2014-08-06 18:01:19 -07:00
vmpressure.c	arm, pm, vmpressure: add missing slab.h includes	2014-02-03 13:24:01 -05:00
vmscan.c	mm: move zone->pages_scanned into a vmstat counter	2014-08-06 18:01:20 -07:00
vmstat.c	mm: vmscan: only update per-cpu thresholds for online CPU	2014-08-06 18:01:20 -07:00
workingset.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
zbud.c	mm/zbud.c: make size unsigned like unique callsite	2014-06-04 16:54:13 -07:00
zsmalloc.c	mm/vmalloc.c: clean up map_vm_area third argument	2014-08-06 18:01:19 -07:00
zswap.c	mm/zswap: NUMA aware allocation for zswap_dstmem	2014-06-04 16:54:14 -07:00