NOMMU: Don't need to clear vm_mm when deleting a VMA

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 <[email protected]> Signed-off-by: David Howells <[email protected]> Acked-by: Al Viro <[email protected]> cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
mna · Feb 24, 2012 · b94cfaf · b94cfaf
1 parent 918e556
commit b94cfaf
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/mm/nommu.c b/mm/nommu.c
@@ -779,8 +779,6 @@ static void delete_vma_from_mm(struct vm_area_struct *vma)
 
 	if (vma->vm_next)
 		vma->vm_next->vm_prev = vma->vm_prev;
-
-	vma->vm_mm = NULL;
 }
 
 /*