linux-kernel - Re: [PATCH 07/10] vmscan: Remove unnecessary temporary variables in shrink

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Message-ID: <20100526112143.GM29038@csn.ul.ie>
Date:	Wed, 26 May 2010 12:21:43 +0100
From:	Mel Gorman <mel@....ul.ie>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, Chris Mason <chris.mason@...cle.com>,
	Dave Chinner <david@...morbit.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 07/10] vmscan: Remove unnecessary temporary variables
	in shrink_zone()

On Sat, Apr 17, 2010 at 01:03:32AM +0200, Johannes Weiner wrote:
> On Fri, Apr 16, 2010 at 11:51:26AM +0900, KOSAKI Motohiro wrote:
> > > Two variables are declared that are unnecessary in shrink_zone() as they
> > > already exist int the scan_control. Remove them
> > > 
> > > Signed-off-by: Mel Gorman <mel@....ul.ie>
> > 
> > ok.
> > 	Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> 
> You confuse me, you added the local variables yourself in 01dbe5c9
> for performance reasons.  Doesn't that still hold?
> 

To avoid a potential regression, I've dropped the patch.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
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