linux/mm
Andrea Arcangeli 99a1300e1d thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy
Speculative cache pagecache lookups can elevate the refcount from
under us, so avoid the false positive. If the refcount is < 2 we'll be
notified by a VM_BUG_ON in put_page_testzero as there are two
put_page(src_page) in a row before returning from this function.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Petr Holasek <pholasek@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-28 08:38:09 -07:00
..
backing-dev.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
bootmem.c
bounce.c
cleancache.c
compaction.c mm: compaction: Abort async compaction if locks are contended or taking too long 2012-08-21 16:45:03 -07:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c block: move down direct IO plugging 2012-08-09 15:23:09 +02:00
fremap.c
frontswap.c
highmem.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
huge_memory.c thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy 2012-09-28 08:38:09 -07:00
hugetlb_cgroup.c
hugetlb.c mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables 2012-07-31 18:42:50 -07:00
hwpoison-inject.c
init-mm.c
internal.h mm: compaction: Abort async compaction if locks are contended or taking too long 2012-08-21 16:45:03 -07:00
Kconfig mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile mm: factor out memory isolate functions 2012-07-31 18:42:45 -07:00
memblock.c mm/memblock: Use NULL instead of 0 for pointers 2012-09-05 08:32:30 +02:00
memcontrol.c memcg: add mem_cgroup_from_css() helper 2012-07-31 18:42:49 -07:00
memory_hotplug.c memory hotplug: fix section info double registration bug 2012-09-17 15:00:38 -07:00
memory-failure.c
memory.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
mempolicy.c Remove user-triggerable BUG from mpol_to_str 2012-09-06 09:37:58 -07:00
mempool.c
migrate.c mm: memcg: fix compaction/migration failing due to memcg limits 2012-07-31 18:42:48 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-08-23 21:48:41 -07:00
mmu_context.c
mmu_notifier.c mm: mmu_notifier: fix freed page still mapped in secondary MMU 2012-07-31 18:42:49 -07:00
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c mm, memcg: move all oom handling to memcontrol.c 2012-07-31 18:42:45 -07:00
page_alloc.c mm/page_alloc: fix the page address of higher page's buddy calculation 2012-09-17 15:00:38 -07:00
page_cgroup.c
page_io.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
page_isolation.c memory-hotplug: fix kswapd looping forever problem 2012-07-31 18:42:45 -07:00
page-writeback.c vfs: kill write_super and sync_supers 2012-08-04 01:24:44 +04:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
prio_tree.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c tmpfs: distribute interleave better across nodes 2012-07-31 18:42:50 -07:00
slab_common.c
slab.c slab: fix starting index for finding another object 2012-09-17 15:00:38 -07:00
slab.h
slob.c
slub.c slub: consider pfmemalloc_match() in get_partial_node() 2012-09-17 15:00:38 -07:00
sparse-vmemmap.c
sparse.c mm/sparse: remove index_init_lock 2012-07-31 18:42:49 -07:00
swap_state.c mm: add support for a filesystem to activate swap files and use direct_IO for writing swap pages 2012-07-31 18:42:47 -07:00
swap.c mm: add support for direct_IO to highmem pages 2012-07-31 18:42:47 -07:00
swapfile.c mm: swapfile: clean up unuse_pte race handling 2012-07-31 18:42:48 -07:00
truncate.c
util.c
vmalloc.c
vmscan.c memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails 2012-09-17 15:00:37 -07:00
vmstat.c mm: account for the number of times direct reclaimers get throttled 2012-07-31 18:42:46 -07:00