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Kirill A. Shutemov 3ea41e6210 thp: avoid race on multiple parallel page faults to the same page 
pmd value is stable only with mm->page_table_lock taken. After taking
the lock we need to check that nobody modified the pmd before changing it.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Reviewed-by: Bob Liu <lliubbo@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-12 17:38:32 -08:00
..
backing-dev.c
backing-dev: use kstrto* in preference to simple_strtoul
2012-08-25 16:58:14 +08:00
balloon_compaction.c
mm: introduce a common interface for balloon pages mobility
2012-12-11 17:22:26 -08:00
bootmem.c
bootmem: remove alloc_arch_preferred_bootmem()
2012-12-12 17:38:31 -08:00
bounce.c
bounce: allow use of bounce pool via config option
2012-07-18 16:40:35 -04:00
cleancache.c
->encode_fh() API change
2012-05-29 23:28:33 -04:00
compaction.c
mm: introduce putback_movable_pages()
2012-12-11 17:22:27 -08:00
debug-pagealloc.c
mm, x86: Remove debug_pagealloc_enabled
2011-12-06 09:24:07 +01:00
dmapool.c
dmapool: make DMAPOOL_DEBUG detect corruption of free marker
2012-12-11 17:22:24 -08:00
fadvise.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
failslab.c
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
filemap_xip.c
mm: move all mmu notifier invocations to be done outside the PT lock
2012-10-09 16:22:58 +09:00
filemap.c
readahead: fault retry breaks mmap file read random detection
2012-10-09 16:22:47 +09:00
fremap.c
remap_file_pages: correctly handle the case of a NULL vm_ops pointer
2012-10-19 13:37:57 -07:00
frontswap.c
frontswap: support exclusive gets if tmem backend is capable
2012-09-21 10:38:12 -04:00
highmem.c
mm, highmem: get virtual address of the page using PKMAP_ADDR()
2012-12-11 17:22:24 -08:00
huge_memory.c
thp: avoid race on multiple parallel page faults to the same page
2012-12-12 17:38:32 -08:00
hugetlb_cgroup.c
cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()
2012-11-19 08:13:38 -08:00
hugetlb.c
numa: convert static memory to dynamically allocated memory for per node device
2012-12-11 17:22:23 -08:00
hwpoison-inject.c
memcg: rename config variables
2012-07-31 18:42:43 -07:00
init-mm.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
internal.h
mm: introduce mm_find_pmd()
2012-12-11 17:22:22 -08:00
interval_tree.c
mm: add CONFIG_DEBUG_VM_RB build option
2012-10-09 16:22:42 +09:00
Kconfig
mm: introduce a common interface for balloon pages mobility
2012-12-11 17:22:26 -08:00
Kconfig.debug
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck.c
…
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
kmemleak: use rbtree instead of prio tree
2012-10-09 16:22:39 +09:00
ksm.c
mm, oom: fix race when specifying a thread as the oom origin
2012-12-11 17:22:27 -08:00
maccess.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
madvise.c
mm: prepare VM_DONTDUMP for using in drivers
2012-10-09 16:22:18 +09:00
Makefile
mm: introduce a common interface for balloon pages mobility
2012-12-11 17:22:26 -08:00
memblock.c
x86, mm: Trim memory in memblock to be page aligned
2012-10-24 11:52:21 -07:00
memcontrol.c
Merge branch 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2012-12-12 08:18:24 -08:00
memory_hotplug.c
memory_hotplug: ensure every online node has NORMAL memory
2012-12-11 17:22:28 -08:00
memory-failure.c
mm: hwpoison: fix action_result() to print out dirty/clean
2012-12-11 17:22:24 -08:00
memory.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
mempolicy.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
mempool.c
mempool: add @gfp_mask to mempool_create_node()
2012-06-25 11:53:47 +02:00
migrate.c
mm: introduce putback_movable_pages()
2012-12-11 17:22:27 -08:00
mincore.c
mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode
2012-03-21 17:54:54 -07:00
mlock.c
mm, thp: fix mlock statistics
2012-10-09 16:23:03 +09:00
mm_init.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
mmap.c
Merge branch 'akpm' (Andrew's patchbomb)
2012-12-11 18:05:37 -08:00
mmu_context.c
mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()
2012-03-21 17:54:59 -07:00
mmu_notifier.c
mm/mmu_notifier: allocate mmu_notifier in advance
2012-10-25 14:37:53 -07:00
mmzone.c
memcg: fix hotplugged memory zone oops
2012-11-16 14:33:04 -08:00
mprotect.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
mremap.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
msync.c
…
nobootmem.c
revert "mm: fix-up zone present pages"
2012-11-16 14:33:04 -08:00
nommu.c
mm: export a function to get vm committed memory
2012-11-15 15:41:22 -08:00
oom_kill.c
mm, oom: fix race when specifying a thread as the oom origin
2012-12-11 17:22:27 -08:00
page_alloc.c
mm: cma: remove watermark hacks
2012-12-11 17:22:27 -08:00
page_cgroup.c
memory-hotplug: auto offline page_cgroup when onlining memory block failed
2012-12-11 17:22:23 -08:00
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: skip HWPoisoned page when offlining pages
2012-12-11 17:22:22 -08:00
page-writeback.c
writeback: remove nr_pages_dirtied arg from balance_dirty_pages_ratelimited_nr()
2012-12-11 17:22:21 -08:00
pagewalk.c
thp: change split_huge_page_pmd() interface
2012-12-12 17:38:31 -08:00
percpu-km.c
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
percpu-vm.c
mm: fix kernel-doc warnings
2012-06-20 14:39:36 -07:00
percpu.c
mm, percpu: Make sure percpu_alloc early parameter has an argument
2012-12-02 06:23:04 -08:00
pgtable-generic.c
thp: introduce pmdp_invalidate()
2012-10-09 16:22:29 +09:00
process_vm_access.c
aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()
2012-05-31 17:49:32 -07:00
quicklist.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
readahead.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
rmap.c
mm: add comment on storage key dirty bit semantics
2012-12-11 17:22:23 -08:00
shmem.c
tmpfs: fix shared mempolicy leak
2012-12-06 11:56:43 -08:00
slab_common.c
mm, slab: release slab_mutex earlier in kmem_cache_destroy()
2012-10-10 09:25:08 +03:00
slab.c
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2012-10-07 07:53:13 +09:00
slab.h
Revert "mm/sl[aou]b: Move sysfs_slab_add to common"
2012-09-05 12:07:44 +03:00
slob.c
Merge branch 'testing/driver-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into fixes
2012-10-19 15:40:18 -07:00
slub.c
slub, hotplug: ignore unrelated node's hot-adding and hot-removing
2012-12-11 17:22:23 -08:00
sparse-vmemmap.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
sparse.c
memory-hotplug, mm/sparse.c: clear the memory to store struct page
2012-12-11 17:22:23 -08:00
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: remove vma arg from page_evictable
2012-10-09 16:22:55 +09:00
swapfile.c
mm, oom: fix race when specifying a thread as the oom origin
2012-12-11 17:22:27 -08:00
truncate.c
mm: use clear_page_mlock() in page_remove_rmap()
2012-10-09 16:22:56 +09:00
util.c
mm: Use __do_krealloc to do the krealloc job
2012-09-04 10:22:58 +03:00
vmalloc.c
mm: use IS_ENABLED(CONFIG_NUMA) instead of NUMA_BUILD
2012-12-11 17:22:22 -08:00
vmscan.c
mm/vmscan.c: try_to_freeze() returns boolean
2012-12-11 17:22:27 -08:00
vmstat.c
thp, vmstat: implement HZP_ALLOC and HZP_ALLOC_FAILED events
2012-12-12 17:38:32 -08:00