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Date: Mon, 26 Apr 2010 20:08:03 -0400
From: Rik van Riel <riel@redhat.com>
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To: Mel Gorman <mel@csn.ul.ie>
CC: Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>,
       Minchan Kim <minchan.kim@gmail.com>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       Christoph Lameter <cl@linux.com>,
       Andrea Arcangeli <aarcange@redhat.com>,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/2] mm,migration: During fork(), wait for migration to
 end if migration PTE is encountered
References: <1272321478-28481-1-git-send-email-mel@csn.ul.ie> <1272321478-28481-2-git-send-email-mel@csn.ul.ie>
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On 04/26/2010 06:37 PM, Mel Gorman wrote:
> From: KAMEZAWA Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com>
>
> From: KAMEZAWA Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com>
>
> At page migration, we replace pte with migration_entry, which has
> similar format as swap_entry and replace it with real pfn at the
> end of migration. But there is a race with fork()'s copy_page_range().

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

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