linux-kernel - Re: [PATCH 2/2] mm: vmstat: Use a single setter function and callback for adjusting percpu thresholds

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Message-Id: <20101028101053.f68ad2c4.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 28 Oct 2010 10:10:53 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Mel Gorman <mel@....ul.ie>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Shaohua Li <shaohua.li@...el.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Christoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH 2/2] mm: vmstat: Use a single setter function and
 callback for adjusting percpu thresholds

On Wed, 27 Oct 2010 09:47:36 +0100
Mel Gorman <mel@....ul.ie> wrote:

> reduce_pgdat_percpu_threshold() and restore_pgdat_percpu_threshold()
> exist to adjust the per-cpu vmstat thresholds while kswapd is awake to
> avoid errors due to counter drift. The functions duplicate some code so
> this patch replaces them with a single set_pgdat_percpu_threshold() that
> takes a callback function to calculate the desired threshold as a
> parameter.
> 
> Signed-off-by: Mel Gorman <mel@....ul.ie>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


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