From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030610Ab2CITrP (ORCPT ); Fri, 9 Mar 2012 14:47:15 -0500 Received: from mail-we0-f174.google.com ([74.125.82.174]:63959 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030466Ab2CITrK (ORCPT ); Fri, 9 Mar 2012 14:47:10 -0500 Message-Id: <20120309190204.846969688@linuxfoundation.org> User-Agent: quilt/0.60-19.1 Date: Fri, 09 Mar 2012 11:02:33 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Al Viro , David Howells Subject: [ 31/95] NOMMU: Dont need to clear vm_mm when deleting a VMA In-Reply-To: <20120309194424.GA2134@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells 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 Signed-off-by: David Howells Acked-by: Al Viro Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- 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; } /*