| From b94cfaf6685d691dc3fab023cf32f65e9b7be09c Mon Sep 17 00:00:00 2001 |
| From: David Howells <dhowells@redhat.com> |
| Date: Thu, 23 Feb 2012 13:51:00 +0000 |
| Subject: NOMMU: Don't need to clear vm_mm when deleting a VMA |
| |
| 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 |
| @@ -779,8 +779,6 @@ static void delete_vma_from_mm(struct vm |
| |
| if (vma->vm_next) |
| vma->vm_next->vm_prev = vma->vm_prev; |
| - |
| - vma->vm_mm = NULL; |
| } |
| |
| /* |
