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Subject[ 25/68] NOMMU: Dont need to clear vm_mm when deleting a VMA
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------
From: David Howells <dhowells@redhat.com>

commit b94cfaf6685d691dc3fab023cf32f65e9b7be09c upstream.

Don't clear vm_mm in a deleted VMA as it's unnecessary and might
conceivably break the filesystem or driver VMA close routine.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
mm/nommu.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -780,8 +780,6 @@ static void delete_vma_from_mm(struct vm

if (vma->vm_next)
vma->vm_next->vm_prev = vma->vm_prev;
-
- vma->vm_mm = NULL;
}

/*



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