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Shaohua Li 965f55dea0 mmap: avoid merging cloned VMAs 
Avoid merging a VMA with another VMA which is cloned from the parent process.

The cloned VMA shares the anon_vma lock with the parent process's VMA.  If
we do the merge, more vmas (even the new range is only for current
process) use the perent process's anon_vma lock.  This introduces
scalability issues.  find_mergeable_anon_vma() already considers this
case.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25 08:39:04 -07:00
..
backing-dev.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
bootmem.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
bounce.c
bounce: call flush_dcache_page() after bounce_copy_vec()
2010-09-09 18:57:25 -07:00
compaction.c
mm: compaction: minimise the time IRQs are disabled while isolating pages for migration
2011-03-22 17:44:05 -07:00
debug-pagealloc.c
generic debug pagealloc
2009-04-01 08:59:13 -07:00
dmapool.c
mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()
2011-01-13 17:32:48 -08:00
fadvise.c
readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM
2010-03-06 11:26:25 -08:00
failslab.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
filemap_xip.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
filemap.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2011-03-24 19:01:30 -07:00
fremap.c
Avoid pgoff overflow in remap_file_pages
2010-09-25 09:34:58 -07:00
highmem.c
mm,x86: fix kmap_atomic_push vs ioremap_32.c
2010-10-27 18:03:05 -07:00
huge_memory.c
mm: thp: fix /dev/zero MAP_PRIVATE and vm_flags cleanups
2011-04-28 11:28:20 -07:00
hugetlb.c
Merge branch 'master' into for-next
2011-04-26 10:22:59 +02:00
hwpoison-inject.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
init-mm.c
mm: provide init_mm mm_context initializer
2010-08-09 20:44:54 -07:00
internal.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
Kconfig
mm: compaction: don't depend on HUGETLB_PAGE
2011-01-26 10:50:02 +10:00
Kconfig.debug
mm: debug-pagealloc: fix kconfig dependency warning
2011-03-22 17:44:02 -07:00
kmemcheck.c
kmemcheck: Fix build errors due to missing slab.h
2010-03-30 22:02:32 +09:00
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
kmemleak: Do not return a pointer to an object that kmemleak did not get
2011-05-19 17:35:28 +01:00
ksm.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
maccess.c
MN10300: Save frame pointer in thread_info struct rather than global var
2010-10-27 17:29:01 +01:00
madvise.c
thp: khugepaged: make khugepaged aware about madvise
2011-01-13 17:32:47 -08:00
Makefile
bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c
2011-02-24 14:43:05 +01:00
memblock.c
mm/memblock: properly handle overlaps and fix error path
2011-03-22 17:44:09 -07:00
memcontrol.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
memory_hotplug.c
mm: optimize pfn calculation in online_page()
2011-04-14 16:06:54 -07:00
memory-failure.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
memory.c
Don't lock guardpage if the stack is growing up
2011-05-09 16:22:07 -07:00
mempolicy.c
mempolicy: remove redundant check in __mpol_equal()
2011-03-22 17:44:04 -07:00
mempool.c
mm: remove broken 'kzalloc' mempool
2009-09-22 07:17:35 -07:00
migrate.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
mincore.c
thp: mincore transparent hugepage support
2011-01-13 17:32:44 -08:00
mlock.c
VM: skip the stack guard page lookup in get_user_pages only for mlock
2011-05-04 21:30:28 -07:00
mm_init.c
…
mmap.c
mmap: avoid merging cloned VMAs
2011-05-25 08:39:04 -07:00
mmu_context.c
exit: fix oops in sync_mm_rss
2010-03-24 16:31:21 -07:00
mmu_notifier.c
thp: mmu_notifier_test_young
2011-01-13 17:32:46 -08:00
mmzone.c
mm: page allocator: adjust the per-cpu counter threshold when memory is low
2011-01-13 17:32:31 -08:00
mprotect.c
thp: mprotect: transparent huge page support
2011-01-13 17:32:44 -08:00
mremap.c
mm: avoid wrapping vm_pgoff in mremap()
2011-04-07 07:35:51 -07:00
msync.c
sanitize vfs_fsync calling conventions
2010-05-21 18:31:21 -04:00
nobootmem.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
nommu.c
arch, mm: filter disallowed nodes from arch specific show_mem functions
2011-05-25 08:39:03 -07:00
oom_kill.c
oom: use pte pages in OOM score
2011-04-28 11:28:21 -07:00
page_alloc.c
arch, mm: filter disallowed nodes from arch specific show_mem functions
2011-05-25 08:39:03 -07:00
page_cgroup.c
memcg: allocate memory cgroup structures in local nodes
2011-05-11 18:50:45 -07:00
page_io.c
block: kill off REQ_UNPLUG
2011-03-10 08:52:27 +01:00
page_isolation.c
mm: page_isolation: codeclean fix comment and rm unneeded val init
2010-10-26 16:52:11 -07:00
page-writeback.c
Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block
2011-03-24 10:16:26 -07:00
pagewalk.c
pagewalk: only split huge pages when necessary
2011-03-22 17:44:04 -07:00
percpu-km.c
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
percpu-vm.c
mm: remove gfp mask from pcpu_get_vm_areas
2011-01-13 17:32:34 -08:00
percpu.c
Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2011-05-24 11:53:42 -07:00
pgtable-generic.c
mm/pgtable-generic.c: fix CONFIG_SWAP=n build
2011-01-26 10:49:58 +10:00
prio_tree.c
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
quicklist.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
readahead.c
read-ahead: use plugging
2011-03-10 08:52:26 +01:00
rmap.c
[S390] merge page_test_dirty and page_clear_dirty
2011-05-23 10:24:31 +02:00
shmem.c
tmpfs: fix highmem swapoff crash regression
2011-05-20 16:23:19 -07:00
slab.c
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
slob.c
mm: Remove support for kmem_cache_name()
2011-01-23 21:00:05 +02:00
slub.c
slub: Fix double bit unlock in debug mode
2011-05-25 08:38:24 -07:00
sparse-vmemmap.c
tree-wide: fix comment/printk typos
2010-11-01 15:38:34 -04:00
sparse.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
swap_state.c
block: remove per-queue plugging
2011-03-10 08:52:07 +01:00
swap.c
mm: check PageUnevictable in lru_deactivate_fn()
2011-05-11 18:50:44 -07:00
swapfile.c
Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block
2011-03-24 10:16:26 -07:00
thrash.c
mm: pass mm to grab_swap_token
2009-06-23 12:50:05 -07:00
truncate.c
mm: deactivate invalidated pages
2011-03-22 17:44:03 -07:00
util.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
vmalloc.c
vmalloc: remove confusing comment on vwrite()
2011-03-22 17:44:09 -07:00
vmscan.c
mm: vmscan: correctly check if reclaimer should schedule during shrink_slab
2011-05-25 08:39:01 -07:00
vmstat.c
mm: add VM counters for transparent hugepages
2011-04-14 16:06:55 -07:00