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Date: Wed, 10 Aug 2011 14:41:47 +0200
From: Johannes Weiner <jweiner@redhat.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>,
        XFS <xfs@oss.sgi.com>, Dave Chinner <david@fromorbit.com>,
        Christoph Hellwig <hch@infradead.org>,
        Wu Fengguang <fengguang.wu@intel.com>, Jan Kara <jack@suse.cz>,
        Rik van Riel <riel@redhat.com>, Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH 2/7] mm: vmscan: Remove dead code related to lumpy
 reclaim waiting on pages under writeback
Message-ID: <20110810124147.GB24133@redhat.com>
References: <1312973240-32576-1-git-send-email-mgorman@suse.de>
 <1312973240-32576-3-git-send-email-mgorman@suse.de>
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On Wed, Aug 10, 2011 at 11:47:15AM +0100, Mel Gorman wrote:
> Lumpy reclaim worked with two passes - the first which queued pages for
> IO and the second which waited on writeback. As direct reclaim can no
> longer write pages there is some dead code. This patch removes it but
> direct reclaim will continue to wait on pages under writeback while in
> synchronous reclaim mode.
> 
> Signed-off-by: Mel Gorman <mgorman@suse.de>

Acked-by: Johannes Weiner <jweiner@redhat.com>