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>
diff --git a/mm/mmap.c b/mm/mmap.c
index fb89360..3100333 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -452,12 +452,10 @@
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);