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Tetsuo Handa fe5c164ef3 mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any progress 
commit 564e81a57f9788b1475127012e0fd44e9049e342 upstream.

Jan Stancek has reported that system occasionally hanging after "oom01"
testcase from LTP triggers OOM.  Guessing from a result that there is a
kworker thread doing memory allocation and the values between "Node 0
Normal free:" and "Node 0 Normal:" differs when hanging, vmstat is not
up-to-date for some reason.

According to commit 373ccbe59270 ("mm, vmstat: allow WQ concurrency to
discover memory reclaim doesn't make any progress"), it meant to force
the kworker thread to take a short sleep, but it by error used
schedule_timeout(1).  We missed that schedule_timeout() in state
TASK_RUNNING doesn't do anything.

Fix it by using schedule_timeout_uninterruptible(1) which forces the
kworker thread to take a short sleep in order to make sure that vmstat
is up-to-date.

Fixes: 373ccbe59270 ("mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Jan Stancek <jstancek@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Cristopher Lameter <clameter@sgi.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-17 12:31:06 -08:00
..
kasan
kasan: fix kmemleak false-positive in kasan_module_alloc()
2015-11-20 16:17:32 -08:00
backing-dev.c
mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any progress
2016-02-17 12:31:06 -08:00
balloon_compaction.c
mm: page migration trylock newpage at same level as oldpage
2015-11-05 19:34:48 -08:00
bootmem.c
bootmem: avoid freeing to bootmem after bootmem is done
2015-09-08 15:35:28 -07:00
cleancache.c
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
cma_debug.c
mm/cma_debug: correct size input to bitmap function
2015-07-17 16:39:54 -07:00
cma.c
mm/cma.c: suppress warning
2015-11-05 19:34:48 -08:00
cma.h
mm: cma: mark cma_bitmap_maxno() inline in header
2015-08-14 15:56:32 -07:00
compaction.c
mm, compaction: distinguish contended status in tracepoints
2015-11-05 19:34:48 -08:00
debug-pagealloc.c
mm/debug-pagealloc: make debug-pagealloc boottime configurable
2014-12-13 12:42:48 -08:00
debug.c
mm: make compound_head() robust
2015-11-06 17:50:42 -08:00
dmapool.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
early_ioremap.c
mm/early_ioremap: use offset_in_page macro
2015-11-05 19:34:48 -08:00
fadvise.c
writeback: implement and use inode_congested()
2015-06-02 08:33:35 -06:00
failslab.c
mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM
2015-11-06 17:50:42 -08:00
filemap.c
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
frame_vector.c
mm: fix docbook comment for get_vaddr_frames()
2015-11-05 19:34:48 -08:00
frontswap.c
frontswap: allow multiple backends
2015-06-24 17:49:45 -07:00
gup.c
mm: introduce VM_LOCKONFAULT
2015-11-05 19:34:48 -08:00
highmem.c
mm/highmem: make kmap cache coloring aware
2014-08-06 18:01:22 -07:00
huge_memory.c
mm: loosen MADV_NOHUGEPAGE to enable Qemu postcopy on s390
2015-11-20 16:17:32 -08:00
hugetlb_cgroup.c
mm: make compound_head() robust
2015-11-06 17:50:42 -08:00
hugetlb.c
mm/hugetlb.c: fix resv map memory leak for placeholder entries
2015-12-12 10:15:34 -08:00
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: use 'unsigned int' for page order
2015-11-06 17:50:42 -08:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
mm: make compound_head() robust
2015-11-06 17:50:42 -08:00
Kconfig.debug
mm/debug_pagealloc: remove obsolete Kconfig options
2015-01-08 15:10:52 -08:00
kmemcheck.c
mm/slab_common: move kmem_cache definition to internal header
2014-10-09 22:25:50 -04:00
kmemleak-test.c
mm/kmemleak-test.c: use pr_fmt for logging
2014-06-06 16:08:18 -07:00
kmemleak.c
mm/kmemleak.c: remove unneeded initialization of object to NULL
2015-11-05 19:34:48 -08:00
ksm.c
ksm: unstable_tree_search_insert error checking cleanup
2015-11-05 19:34:48 -08:00
list_lru.c
memcg: simplify and inline __mem_cgroup_from_kmem
2015-11-05 19:34:48 -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: madvise allow remove operation for hugetlbfs
2015-09-08 15:35:28 -07:00
Makefile
media updates for v4.3-rc1
2015-09-11 16:42:39 -07:00
memblock.c
mm/memblock: make memblock_remove_range() static
2015-11-05 19:34:48 -08:00
memcontrol.c
mm: memcontrol: fix possible memcg leak due to interrupted reclaim
2015-12-29 17:45:49 -08:00
memory_hotplug.c
mm/memory_hotplug.c: check for missing sections in test_pages_in_a_zone()
2015-12-29 17:45:49 -08:00
memory-failure.c
mm: make compound_head() robust
2015-11-06 17:50:42 -08:00
memory.c
mm, dax: fix DAX deadlocks (COW fault)
2015-11-18 16:54:36 -08:00
mempolicy.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
mempool.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
memtest.c
memtest: remove unused header files
2015-09-08 15:35:28 -07:00
migrate.c
mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM
2015-11-06 17:50:42 -08:00
mincore.c
mm/mincore: use offset_in_page macro
2015-11-05 19:34:48 -08:00
mlock.c
mm: mlock: add mlock flags to enable VM_LOCKONFAULT usage
2015-11-05 19:34:48 -08:00
mm_init.c
mm: meminit: remove mminit_verify_page_links
2015-06-30 19:44:56 -07:00
mmap.c
mm: introduce VM_LOCKONFAULT
2015-11-05 19:34:48 -08:00
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
mmu-notifier: add clear_young callback
2015-09-10 13:29:01 -07:00
mmzone.c
mm: microoptimize zonelist operations
2015-02-11 17:06:02 -08:00
mprotect.c
userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx
2015-09-04 16:54:41 -07:00
mremap.c
mm/mremap: use offset_in_page macro
2015-11-05 19:34:48 -08:00
msync.c
mm/msync: use offset_in_page macro
2015-11-05 19:34:48 -08:00
nobootmem.c
mm: page_alloc: pass PFN to __free_pages_bootmem
2015-06-30 19:44:55 -07:00
nommu.c
mm/nommu.c: drop unlikely inside BUG_ON()
2015-11-05 19:34:48 -08:00
oom_kill.c
mm/oom_kill.c: avoid attempting to kill init sharing same memory
2015-12-12 10:15:34 -08:00
page_alloc.c
mm: fix swapped Movable and Reclaimable in /proc/pagetypeinfo
2015-12-12 10:15:34 -08:00
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: introduce idle page tracking
2015-09-10 13:29:01 -07:00
page_idle.c
mm: introduce idle page tracking
2015-09-10 13:29:01 -07:00
page_io.c
fs: use helper bio_add_page() instead of open coding on bi_io_vec
2015-08-13 12:32:00 -06:00
page_isolation.c
mm, page_isolation: make set/unset_migratetype_isolate() file-local
2015-09-08 15:35:28 -07:00
page_owner.c
mm/page_owner: set correct gfp_mask on page_owner
2015-07-17 16:39:54 -07:00
page-writeback.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
pagewalk.c
mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers
2015-03-25 16:20:30 -07:00
percpu-km.c
percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated
2014-09-02 14:46:05 -04:00
percpu-vm.c
percpu: move region iterations out of pcpu_[de]populate_chunk()
2014-09-02 14:46:02 -04:00
percpu.c
mm/percpu: use offset_in_page macro
2015-11-05 19:34:48 -08:00
pgtable-generic.c
mm,thp: introduce flush_pmd_tlb_range
2015-10-17 17:48:20 +05:30
process_vm_access.c
process_vm_access: switch to {compat_,}import_iovec()
2015-04-11 22:27:12 -04:00
quicklist.c
…
readahead.c
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
rmap.c
mm: page migration use migration entry for swapcache too
2015-11-05 19:34:48 -08:00
shmem.c
tmpfs: fix shmem_evict_inode() warnings on i_blocks
2015-12-12 10:15:34 -08:00
slab_common.c
slab/slub: adjust kmem_cache_alloc_bulk API
2015-11-22 11:58:44 -08:00
slab.c
slab/slub: adjust kmem_cache_alloc_bulk API
2015-11-22 11:58:44 -08:00
slab.h
slab/slub: adjust kmem_cache_alloc_bulk API
2015-11-22 11:58:44 -08:00
slob.c
slab/slub: adjust kmem_cache_alloc_bulk API
2015-11-22 11:58:44 -08:00
slub.c
slab/slub: adjust kmem_cache_alloc_bulk API
2015-11-22 11:58:44 -08:00
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_cgroup.c
mm: page_cgroup: rename file to mm/swap_cgroup.c
2014-12-10 17:41:09 -08:00
swap_state.c
mm: swap: zswap: maybe_preload & refactoring
2015-09-08 15:35:28 -07:00
swap.c
mm: make compound_head() robust
2015-11-06 17:50:42 -08:00
swapfile.c
mm: /proc/pid/smaps:: show proportional swap share of the mapping
2015-09-08 15:35:28 -07:00
truncate.c
memcg: add per cgroup dirty page accounting
2015-06-02 08:33:33 -06:00
userfaultfd.c
userfaultfd: avoid mmap_sem read recursion in mcopy_atomic
2015-09-04 16:54:41 -07:00
util.c
mm/util: use offset_in_page macro
2015-11-05 19:34:48 -08:00
vmacache.c
mm/vmacache: inline vmacache_valid_mm()
2015-11-05 19:34:48 -08:00
vmalloc.c
mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()
2015-11-20 16:17:32 -08:00
vmpressure.c
mm/vmpressure.c: fix race in vmpressure_work_fn()
2014-12-02 17:32:07 -08:00
vmscan.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
vmstat.c
vmstat: allocate vmstat_wq before it is used
2016-01-08 23:47:54 -08:00
workingset.c
list_lru: add helpers to isolate items
2015-02-12 18:54:10 -08:00
zbud.c
mm: zsmalloc: constify struct zs_pool name
2015-11-06 17:50:42 -08:00
zpool.c
mm: zsmalloc: constify struct zs_pool name
2015-11-06 17:50:42 -08:00
zsmalloc.c
zsmalloc: fix migrate_zspage-zs_free race condition
2016-02-17 12:31:06 -08:00
zswap.c
mm/zswap: change incorrect strncmp use to strcmp
2015-12-18 14:25:40 -08:00