From mboxrd@z Thu Jan  1 00:00:00 1970
From: Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH 04/10] vmscan: Synchronous lumpy reclaim should not
 call congestion_wait()
Date: Wed, 8 Sep 2010 00:26:14 +0900
Message-ID: <20100907152614.GC4620@barrios-desktop>
References: <1283770053-18833-1-git-send-email-mel@csn.ul.ie>
 <1283770053-18833-5-git-send-email-mel@csn.ul.ie>
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Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
	Linux Kernel List <linux-kernel@vger.kernel.org>,
	Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Wu Fengguang <fengguang.wu@intel.com>,
	Andrea Arcangeli <aarcange@redhat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	Dave Chinner <david@fromorbit.com>,
	Chris Mason <chris.mason@oracle.com>,
	Christoph Hellwig <hch@lst.de>,
	Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mel@csn.ul.ie>
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On Mon, Sep 06, 2010 at 11:47:27AM +0100, Mel Gorman wrote:
> From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> 
> congestion_wait() mean "waiting queue congestion is cleared".  However,
> synchronous lumpy reclaim does not need this congestion_wait() as
> shrink_page_list(PAGEOUT_IO_SYNC) uses wait_on_page_writeback()
> and it provides the necessary waiting.
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>

-- 
Kind regards,
Minchan Kim

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