Hugh Dickins 14af4a5e9b mm, cma: prevent nr_isolated_* counters from going negative ... /proc/sys/vm/stat_refresh warns nr_isolated_anon and nr_isolated_file go increasingly negative under compaction: which would add delay when should be none, or no delay when should delay. The bug in compaction was due to a recent mmotm patch, but much older instance of the bug was also noticed in isolate_migratepages_range() which is used for CMA and gigantic hugepage allocations. The bug is caused by putback_movable_pages() in an error path decrementing the isolated counters without them being previously incremented by acct_isolated(). Fix isolate_migratepages_range() by removing the error-path putback, thus reaching acct_isolated() with migratepages still isolated, and leaving putback to caller like most other places do. Fixes: edc2ca6124 ("mm, compaction: move pageblock checks up from isolate_migratepages_range()") [vbabka@suse.cz: expanded the changelog] Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-05-05 17:38:53 -07:00
..
kasan
backing-dev.c
balloon_compaction.c
bootmem.c
cleancache.c
cma.c
cma.h
cma_debug.c
compaction.c	mm, cma: prevent nr_isolated_* counters from going negative	2016-05-05 17:38:53 -07:00
debug.c
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c
frame_vector.c
frontswap.c
gup.c
highmem.c
huge_memory.c	mm: thp: correct split_huge_pages file permission	2016-05-05 17:38:53 -07:00
hugetlb.c
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
list_lru.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c
memory-failure.c	mm/memory-failure: fix race with compound page split/merge	2016-04-28 19:34:04 -07:00
memory.c	huge pagecache: mmap_sem is unlocked when truncation splits pmd	2016-05-05 17:38:53 -07:00
memory_hotplug.c
mempolicy.c
mempool.c
memtest.c
migrate.c	mm/hwpoison: fix wrong num_poisoned_pages accounting	2016-04-28 19:34:04 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c
page-writeback.c
page_alloc.c	mm: update min_free_kbytes from khugepaged after core initialization	2016-05-05 17:38:53 -07:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: call swap_slot_free_notify() with page lock held	2016-04-28 19:34:04 -07:00
page_isolation.c
page_owner.c
page_poison.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c
slab.c
slab.h
slab_common.c
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap.c
swap_cgroup.c
swap_state.c
swapfile.c
truncate.c
userfaultfd.c
util.c
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c	mm: wake kcompactd before kswapd's short sleep	2016-04-28 19:34:04 -07:00
vmstat.c
workingset.c
zbud.c
zpool.c
zsmalloc.c
zswap.c