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Re: [PATCH 7/7] mm: vmscan: Immediately reclaim end-of-LRU dirty pages w

To: Mel Gorman <mgorman@xxxxxxx>
Subject: Re: [PATCH 7/7] mm: vmscan: Immediately reclaim end-of-LRU dirty pages when writeback completes
From: Minchan Kim <minchan.kim@xxxxxxxxx>
Date: Thu, 11 Aug 2011 08:22:07 +0900
Cc: Linux-MM <linux-mm@xxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, XFS <xfs@xxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Johannes Weiner <jweiner@xxxxxxxxxx>, Wu Fengguang <fengguang.wu@xxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Rik van Riel <riel@xxxxxxxxxx>
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In-reply-to: <1312973240-32576-8-git-send-email-mgorman@xxxxxxx>
References: <1312973240-32576-1-git-send-email-mgorman@xxxxxxx> <1312973240-32576-8-git-send-email-mgorman@xxxxxxx>
On Wed, Aug 10, 2011 at 7:47 PM, Mel Gorman <mgorman@xxxxxxx> wrote:
> When direct reclaim encounters a dirty page, it gets recycled around
> the LRU for another cycle. This patch marks the page PageReclaim
> similar to deactivate_page() so that the page gets reclaimed almost
> immediately after the page gets cleaned. This is to avoid reclaiming
> clean pages that are younger than a dirty page encountered at the
> end of the LRU that might have been something like a use-once page.
>
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
> Acked-by: Johannes Weiner <jweiner@xxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>

-- 
Kind regards,
Minchan Kim

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