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authorAndrea Arcangeli <aarcange@redhat.com>2010-08-09 17:19:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:58 -0700
commit5e549e989f94de0596b8149a90e0088e7d4d7c97 (patch)
tree2a20fdb475ea0320310a4a770da72cd54ea9347f /mm/mmap.c
parentff36b801624d02a876bb7deded6ab860ea3503f2 (diff)
downloadlwn-5e549e989f94de0596b8149a90e0088e7d4d7c97.tar.gz
lwn-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.c2
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);