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Date: Fri, 10 Sep 2010 10:40:19 -0400
From: Rik van Riel <riel@redhat.com>
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Subject: Re: [PATCH 1/4] hugetlb, rmap: always use anon_vma root pointer
References: <1284092586-1179-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1284092586-1179-2-git-send-email-n-horiguchi@ah.jp.nec.com>
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To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Andrea Arcangeli <aarcange@redhat.com>, Hugh Dickins <hughd@google.com>, Christoph Lameter <cl@linux.com>, Linus Torvalds <torvalds@linux-foundation.org>, Andrew Morton <akpm@linux-foundation.org>, Peter Zijlstra <peterz@infradead.org>, Andi Kleen <andi@firstfloor.org>, linux-mm <linux-mm@kvack.org>
List-ID: <linux-mm.kvack.org>

On 09/10/2010 12:23 AM, Naoya Horiguchi wrote:
> This patch applies Andrea's fix given by the following patch into hugepage
> rmapping code:
>
>    commit 288468c334e98aacbb7e2fb8bde6bc1adcd55e05
>    Author: Andrea Arcangeli<aarcange@redhat.com>
>    Date:   Mon Aug 9 17:19:09 2010 -0700
>
> This patch uses anon_vma->root and avoids unnecessary overwriting when
> anon_vma is already set up.
>
> Signed-off-by: Naoya Horiguchi<n-horiguchi@ah.jp.nec.com>

Reviewed-by: Rik van Riel <riel@redhat.com>

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