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Message-ID: <4BC38894.70109@redhat.com>
Date: Mon, 12 Apr 2010 16:54:44 -0400
From: Rik van Riel <riel@...hat.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC: Borislav Petkov <bp@...en8.de>,
Johannes Weiner <hannes@...xchg.org>,
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Minchan Kim <minchan.kim@...il.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Lee Schermerhorn <Lee.Schermerhorn@...com>,
Nick Piggin <npiggin@...e.de>,
Andrea Arcangeli <aarcange@...hat.com>,
Hugh Dickins <hugh.dickins@...cali.co.uk>,
sgunderson@...foot.com
Subject: Re: [PATCH 2/4] vma_adjust: fix the copying of anon_vma chains
On 04/12/2010 04:23 PM, Linus Torvalds wrote:
>
> From: Linus Torvalds<torvalds@...ux-foundation.org>
> Date: Sat, 10 Apr 2010 15:22:30 -0700
> Subject: [PATCH 2/4] vma_adjust: fix the copying of anon_vma chains
>
> When we move the boundaries between two vma's due to things like
> mprotect, we need to make sure that the anon_vma of the pages that got
> moved from one vma to another gets properly copied around. And that was
> not always the case, in this rather hard-to-follow code sequence.
>
> Clarify the code, and fix it so that it copies the anon_vma from the
> right source.
>
> Signed-off-by: Linus Torvalds<torvalds@...ux-foundation.org>
Reviewed-by: Rik van Riel <riel@...hat.com>
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