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Date: Fri, 13 May 2011 08:44:31 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [rfc patch 1/6] memcg: remove unused retry signal from reclaim
Message-Id: <20110513084431.937d72e9.kamezawa.hiroyu@jp.fujitsu.com>
In-Reply-To: <1305212038-15445-2-git-send-email-hannes@cmpxchg.org>
References: <1305212038-15445-1-git-send-email-hannes@cmpxchg.org>
	<1305212038-15445-2-git-send-email-hannes@cmpxchg.org>
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To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>, Balbir Singh <balbir@linux.vnet.ibm.com>, Ying Han <yinghan@google.com>, Michal Hocko <mhocko@suse.cz>, Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Minchan Kim <minchan.kim@gmail.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Mel Gorman <mgorman@suse.de>, linux-mm@kvack.org, linux-kernel@vger.kernel.org

On Thu, 12 May 2011 16:53:53 +0200
Johannes Weiner <hannes@cmpxchg.org> wrote:

> If the memcg reclaim code detects the target memcg below its limit it
> exits and returns a guaranteed non-zero value so that the charge is
> retried.
> 
> Nowadays, the charge side checks the memcg limit itself and does not
> rely on this non-zero return value trick.
> 
> This patch removes it.  The reclaim code will now always return the
> true number of pages it reclaimed on its own.
> 
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

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

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