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Date: Mon, 07 Oct 2013 15:06:15 -0400
From: Rik van Riel <riel@redhat.com>
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To: Mel Gorman <mgorman@suse.de>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
        Ingo Molnar <mingo@kernel.org>, Andrea Arcangeli <aarcange@redhat.com>,
        Johannes Weiner <hannes@cmpxchg.org>, Linux-MM <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 36/63] mm: numa: Only trap pmd hinting faults if we would
 otherwise trap PTE faults
References: <1381141781-10992-1-git-send-email-mgorman@suse.de> <1381141781-10992-37-git-send-email-mgorman@suse.de>
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On 10/07/2013 06:29 AM, Mel Gorman wrote:
> Base page PMD faulting is meant to batch handle NUMA hinting faults from
> PTEs. However, even is no PTE faults would ever be handled within a
> range the kernel still traps PMD hinting faults. This patch avoids the
> overhead.
> 
> Signed-off-by: Mel Gorman <mgorman@suse.de>

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

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