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Date: Mon, 5 Jul 2010 11:45:17 +0200
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH 5/7] hugetlb: pin oldpage in page migration
Message-ID: <20100705094517.GB8510@basil.fritz.box>
References: <1278049646-29769-1-git-send-email-n-horiguchi@ah.jp.nec.com>
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To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi@firstfloor.org>, Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mel@csn.ul.ie>, Wu Fengguang <fengguang.wu@intel.com>, Jun'ichi Nomura <j-nomura@ce.jp.nec.com>, linux-mm <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
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On Fri, Jul 02, 2010 at 02:47:24PM +0900, Naoya Horiguchi wrote:
> This patch introduces pinning the old page during page migration
> to avoid freeing it before we complete copying.
> This race condition can happen for privately mapped or anonymous hugepage.

Patch looks good.
-Andi

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