diff options
| author | Andrea Arcangeli <aarcange@redhat.com> | 2010-08-10 02:19:07 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-10 05:44:58 +0200 |
| commit | 5e549e989f94de0596b8149a90e0088e7d4d7c97 (patch) | |
| tree | 2a20fdb475ea0320310a4a770da72cd54ea9347f /mm/mmap.c | |
| parent | shmem: reduce pagefault lock contention (diff) | |
| download | linux-5e549e989f94de0596b8149a90e0088e7d4d7c97.tar.xz linux-5e549e989f94de0596b8149a90e0088e7d4d7c97.zip | |
mmap: remove unnecessary lock from __vma_link
There's no anon-vma related mangling happening inside __vma_link anymore
so no need of anon_vma locking there.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index fb89360a2120..31003338b978 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -452,12 +452,10 @@ static void vma_link(struct mm_struct *mm, struct vm_area_struct *vma, spin_lock(&mapping->i_mmap_lock); vma->vm_truncate_count = mapping->truncate_count; } - vma_lock_anon_vma(vma); __vma_link(mm, vma, prev, rb_link, rb_parent); __vma_link_file(vma); - vma_unlock_anon_vma(vma); if (mapping) spin_unlock(&mapping->i_mmap_lock); |