linux-kernel - Re: [PATCH 2/2] mm: vmscan: If kswapd has been running too long, allow it to sleep

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Message-ID: <20110516152649.GU16531@cmpxchg.org>
Date:	Mon, 16 May 2011 17:26:49 +0200
From:	Johannes Weiner <hannes@...xchg.org>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Colin King <colin.king@...onical.com>,
	Raghavendra D Prabhu <raghu.prabhu13@...il.com>,
	Jan Kara <jack@...e.cz>, Chris Mason <chris.mason@...cle.com>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	Rik van Riel <riel@...hat.com>,
	Minchan Kim <minchan.kim@...il.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ext4 <linux-ext4@...r.kernel.org>,
	stable <stable@...nel.org>
Subject: Re: [PATCH 2/2] mm: vmscan: If kswapd has been running too long,
 allow it to sleep

On Mon, May 16, 2011 at 04:06:57PM +0100, Mel Gorman wrote:
> Under constant allocation pressure, kswapd can be in the situation where
> sleeping_prematurely() will always return true even if kswapd has been
> running a long time. Check if kswapd needs to be scheduled.
> 
> Signed-off-by: Mel Gorman <mgorman@...e.de>
> Acked-by: Rik van Riel <riel@...hat.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>
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