Message-ID: <4C166F2E.4030606@redhat.com>
Date: Mon, 14 Jun 2010 14:04:30 -0400
From: Rik van Riel <riel@redhat.com>
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To: Mel Gorman <mel@csn.ul.ie>
CC: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
       linux-mm@kvack.org, Dave Chinner <david@fromorbit.com>,
       Chris Mason <chris.mason@oracle.com>, Nick Piggin <npiggin@suse.de>,
       Johannes Weiner <hannes@cmpxchg.org>,
       Christoph Hellwig <hch@infradead.org>,
       KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 05/12] vmscan: kill prev_priority completely
References: <1276514273-27693-1-git-send-email-mel@csn.ul.ie> <1276514273-27693-6-git-send-email-mel@csn.ul.ie>
In-Reply-To: <1276514273-27693-6-git-send-email-mel@csn.ul.ie>
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On 06/14/2010 07:17 AM, Mel Gorman wrote:
> From: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
>
> Since 2.6.28 zone->prev_priority is unused. Then it can be removed
> safely. It reduce stack usage slightly.
>
> Now I have to say that I'm sorry. 2 years ago, I thought prev_priority
> can be integrate again, it's useful. but four (or more) times trying
> haven't got good performance number. Thus I give up such approach.
>
> Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@jp.fujitsu.com>
> Reviewed-by: Johannes Weiner<hannes@cmpxchg.org>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>

Reviewed-by: Rik van Riel <riel@redhat.com>

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