| To: | Mel Gorman <mgorman@xxxxxxx> |
|---|---|
| Subject: | Re: [PATCH 7/7] mm: vmscan: Immediately reclaim end-of-LRU dirty pages when writeback completes |
| From: | KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> |
| Date: | Thu, 11 Aug 2011 18:19:13 +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>, Minchan Kim <minchan.kim@xxxxxxxxx> |
| In-reply-to: | <1312973240-32576-8-git-send-email-mgorman@xxxxxxx> |
| Organization: | FUJITSU Co. LTD. |
| References: | <1312973240-32576-1-git-send-email-mgorman@xxxxxxx> <1312973240-32576-8-git-send-email-mgorman@xxxxxxx> |
On Wed, 10 Aug 2011 11:47:20 +0100 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: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> |
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