From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id BC8F76003C2 for ; Fri, 30 Apr 2010 16:22:19 -0400 (EDT) Message-ID: <4BDB3BDC.2050004@redhat.com> Date: Fri, 30 Apr 2010 16:21:48 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks References: <1272529930-29505-1-git-send-email-mel@csn.ul.ie> <1272529930-29505-3-git-send-email-mel@csn.ul.ie> <20100429162120.GC22108@random.random> <20100430192235.GL22108@random.random> In-Reply-To: <20100430192235.GL22108@random.random> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Andrea Arcangeli Cc: Mel Gorman , Andrew Morton , Linux-MM , LKML , Minchan Kim , KAMEZAWA Hiroyuki , Christoph Lameter List-ID: On 04/30/2010 03:22 PM, Andrea Arcangeli wrote: > I'm building a mergeable THP+memory compaction tree ready for mainline > merging based on new anon-vma code, so I'm integrating your patch1 and > this below should be the port of my alternate fix to your patch2 to > fix the longstanding crash in migrate (not a bug in new anon-vma code > but longstanding). patch1 is instead about the bugs introduced by the > new anon-vma code that might crash migrate (even without memory > compaction and/or THP) the same way as the bug fixed by the below. > > == > Subject: fix race between shift_arg_pages and rmap_walk > > From: Andrea Arcangeli Reviewed-by: Rik van Riel -- All rights reversed -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org