Michal Hocko 31e49bfda1 mm, oom: protect !costly allocations some more for !CONFIG_COMPACTION ... Joonsoo has reported that he is able to trigger OOM for !costly high order requests (heavy fork() workload close the OOM) with the new oom detection rework. This is because we rely only on should_reclaim_retry when the compaction is disabled and it only checks watermarks for the requested order and so we might trigger OOM when there is a lot of free memory. It is not very clear what are the usual workloads when the compaction is disabled. Relying on high order allocations heavily without any mechanism to create those orders except for unbound amount of reclaim is certainly not a good idea. To prevent from potential regressions let's help this configuration some. We have to sacrifice the determinsm though because there simply is none here possible. should_compact_retry implementation for !CONFIG_COMPACTION, which was empty so far, will do watermark check for order-0 on all eligible zones. This will cause retrying until either the reclaim cannot make any further progress or all the zones are depleted even for order-0 pages. This means that the number of retries is basically unbounded for !costly orders but that was the case before the rework as well so this shouldn't regress. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1463051677-29418-3-git-send-email-mhocko@kernel.org Reported-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-05-20 17:58:30 -07:00
..
kasan	mm, kasan: fix compilation for CONFIG_SLAB	2016-04-01 17:03:37 -05:00
backing-dev.c	mm: throttle on IO only when there are too many dirty and writeback pages	2016-05-20 17:58:30 -07:00
balloon_compaction.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2016-03-17 21:38:27 -07:00
bootmem.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
cleancache.c	cleancache: constify cleancache_ops structure	2016-01-27 09:09:57 -05:00
cma_debug.c
cma.c	mm/cma.c: suppress warning	2015-11-05 19:34:48 -08:00
cma.h
compaction.c	mm, oom, compaction: prevent from should_compact_retry looping for ever for costly orders	2016-05-20 17:58:30 -07:00
debug_page_ref.c	mm/page_ref: add tracepoint to track down page reference manipulation	2016-03-17 15:09:34 -07:00
debug.c	mm: introduce page reference manipulation functions	2016-03-17 15:09:34 -07:00
dmapool.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
early_ioremap.c	mm/early_ioremap: use offset_in_page macro	2015-11-05 19:34:48 -08:00
fadvise.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
failslab.c	mm: fault-inject take over bootstrap kmem_cache check	2016-03-15 16:55:16 -07:00
filemap.c	mm: filemap: only do access activations on reads	2016-05-20 17:58:30 -07:00
frame_vector.c	mm/gup: Switch all callers of get_user_pages() to not pass tsk/mm	2016-02-16 10:11:12 +01:00
frontswap.c
gup.c	Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-04-14 19:31:34 -07:00
highmem.c	mm/highmem: make nr_free_highpages() handles all highmem zones by itself	2016-05-19 19:12:14 -07:00
huge_memory.c	huge mm: move_huge_pmd does not need new_vma	2016-05-19 19:12:14 -07:00
hugetlb_cgroup.c	mm: make compound_head() robust	2015-11-06 17:50:42 -08:00
hugetlb.c	mm/hugetlb: add same zone check in pfn_range_valid_gigantic()	2016-05-19 19:12:14 -07:00
hwpoison-inject.c	hwpoison: use page_cgroup_ino for filtering by memcg	2015-09-10 13:29:01 -07:00
init-mm.c
internal.h	mm, compaction: distinguish between full and partial COMPACT_COMPLETE	2016-05-20 17:58:30 -07:00
interval_tree.c
Kconfig	memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE	2016-05-19 19:12:14 -07:00
Kconfig.debug	mm/page_ref: add tracepoint to track down page reference manipulation	2016-03-17 15:09:34 -07:00
kmemcheck.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
kmemleak-test.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
kmemleak.c	mm: coalesce split strings	2016-03-17 15:09:34 -07:00
ksm.c	ksm: fix conflict between mmput and scan_get_next_rmap_item	2016-05-12 15:52:50 -07:00
list_lru.c	mm: memcontrol: move kmem accounting code to CONFIG_MEMCG	2016-01-20 17:09:18 -08:00
maccess.c	mm/maccess.c: actually return -EFAULT from strncpy_from_unsafe	2015-11-05 19:34:48 -08:00
madvise.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
Makefile	mm, kasan: SLAB support	2016-03-25 16:37:42 -07:00
memblock.c	mm: coalesce split strings	2016-03-17 15:09:34 -07:00
memcontrol.c	oom, oom_reaper: try to reap tasks which skip regular OOM killer path	2016-05-19 19:12:14 -07:00
memory_hotplug.c	memory_hotplug: introduce memhp_default_state= command line parameter	2016-05-19 19:12:14 -07:00
memory-failure.c	mm/memory-failure: fix race with compound page split/merge	2016-04-28 19:34:04 -07:00
memory.c	mm: thp: calculate the mapcount correctly for THP pages during WP faults	2016-05-12 15:52:50 -07:00
mempolicy.c	mm, page_alloc: avoid looking up the first zone in a zonelist twice	2016-05-19 19:12:14 -07:00
mempool.c	mm, kasan: add GFP flags to KASAN API	2016-03-25 16:37:42 -07:00
memtest.c
migrate.c	mm: use __SetPageSwapBacked and dont ClearPageSwapBacked	2016-05-19 19:12:14 -07:00
mincore.c	mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage	2016-04-04 10:41:08 -07:00
mlock.c	mm: fix mlock accouting	2016-01-21 17:20:51 -08:00
mm_init.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
mmap.c	mm/mmap: kill hook arch_rebalance_pgtables()	2016-05-19 19:12:14 -07:00
mmu_context.c	mm/mmu_context, sched/core: Fix mmu_context.h assumption	2016-04-28 11:44:19 +02:00
mmu_notifier.c	fix Christoph's email addresses	2016-03-17 15:09:34 -07:00
mmzone.c	mm, page_alloc: inline the fast path of the zonelist iterator	2016-05-19 19:12:14 -07:00
mprotect.c	mm/mprotect.c: don't imply PROT_EXEC on non-exec fs	2016-03-22 15:36:02 -07:00
mremap.c	huge pagecache: extend mremap pmd rmap lockout to files	2016-05-19 19:12:14 -07:00
msync.c	mm/msync: use offset_in_page macro	2015-11-05 19:34:48 -08:00
nobootmem.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
nommu.c	Merge branch 'mm-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-04-14 19:31:34 -07:00
oom_kill.c	mm, oom_reaper: clear TIF_MEMDIE for all tasks queued for oom_reaper	2016-05-19 19:12:14 -07:00
page_alloc.c	mm, oom: protect !costly allocations some more for !CONFIG_COMPACTION	2016-05-20 17:58:30 -07:00
page_counter.c	mm: page_counter: let page_counter_try_charge() return bool	2015-11-05 19:34:48 -08:00
page_ext.c	mm/page_poisoning.c: allow for zero poisoning	2016-03-15 16:55:16 -07:00
page_idle.c	mm: add page_check_address_transhuge() helper	2016-01-15 17:56:32 -08:00
page_io.c	Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-17 15:05:23 -07:00
page_isolation.c	mm/memory_hotplug: add comment to some functions related to memory hotplug	2016-05-19 19:12:14 -07:00
page_owner.c	mm, page_alloc: inline pageblock lookup in page free fast paths	2016-05-19 19:12:14 -07:00
page_poison.c	mm/page_poisoning.c: allow for zero poisoning	2016-03-15 16:55:16 -07:00
page-writeback.c	mm/writeback: correct dirty page calculation for highmem	2016-05-19 19:12:14 -07:00
pagewalk.c	thp: rename split_huge_page_pmd() to split_huge_pmd()	2016-01-15 17:56:32 -08:00
percpu-km.c	mm: percpu: use pr_fmt to prefix output	2016-03-17 15:09:34 -07:00
percpu-vm.c
percpu.c	mm: percpu: use pr_fmt to prefix output	2016-03-17 15:09:34 -07:00
pgtable-generic.c	mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range	2016-03-17 15:09:34 -07:00
process_vm_access.c	mm/gup: Introduce get_user_pages_remote()	2016-02-16 10:04:09 +01:00
quicklist.c	fix Christoph's email addresses	2016-03-17 15:09:34 -07:00
readahead.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
rmap.c	mm: use __SetPageSwapBacked and dont ClearPageSwapBacked	2016-05-19 19:12:14 -07:00
shmem.c	tmpfs: mem_cgroup charge fault to vm_mm not current mm	2016-05-19 19:12:14 -07:00
slab_common.c	mm, kasan: add GFP flags to KASAN API	2016-03-25 16:37:42 -07:00
slab.c	include/linux/nodemask.h: create next_node_in() helper	2016-05-19 19:12:14 -07:00
slab.h	mm, kasan: add GFP flags to KASAN API	2016-03-25 16:37:42 -07:00
slob.c	mm: slab: free kmem_cache_node after destroy sysfs file	2016-02-18 16:23:24 -08:00
slub.c	mm: rename _count, field of the struct page, to _refcount	2016-05-19 19:12:14 -07:00
sparse-vmemmap.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
sparse.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
swap_cgroup.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
swap_state.c	mm: use __SetPageSwapBacked and dont ClearPageSwapBacked	2016-05-19 19:12:14 -07:00
swap.c	thp: keep huge zero page pinned until tlb flush	2016-04-28 19:34:04 -07:00
swapfile.c	mm: thp: calculate the mapcount correctly for THP pages during WP faults	2016-05-12 15:52:50 -07:00
truncate.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
userfaultfd.c	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
util.c	mm: uninline page_mapped()	2016-05-19 19:12:14 -07:00
vmacache.c	mm/vmacache: inline vmacache_valid_mm()	2015-11-05 19:34:48 -08:00
vmalloc.c	mm/vmalloc: use PAGE_ALIGNED() to check PAGE_SIZE alignment	2016-03-17 15:09:34 -07:00
vmpressure.c	mm/vmpressure.c: fix subtree pressure detection	2016-02-03 08:28:43 -08:00
vmscan.c	mm, oom: rework oom detection	2016-05-20 17:58:30 -07:00
vmstat.c	mm, page_alloc: inline pageblock lookup in page free fast paths	2016-05-19 19:12:14 -07:00
workingset.c	mm: workingset: make shadow node shrinker memcg aware	2016-03-17 15:09:34 -07:00
zbud.c	mm/zbud.c: use list_last_entry() instead of list_tail_entry()	2016-01-15 11:40:52 -08:00
zpool.c	mm: zsmalloc: constify struct zs_pool name	2015-11-06 17:50:42 -08:00
zsmalloc.c	zsmalloc: fix zs_can_compact() integer overflow	2016-05-09 17:40:59 -07:00
zswap.c	mm/zswap: provide unique zpool name	2016-05-05 17:38:53 -07:00