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From: Johannes Weiner <hannes@cmpxchg.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: kamezawa.hiroyu@jp.fujitsu.com, nishimura@mxp.nes.nec.co.jp,
	balbir@linux.vnet.ibm.com, minchan.kim@gmail.com,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [patch 0/2] memcg: clean up limit checking
Date: Thu, 3 Feb 2011 13:53:57 +0100	[thread overview]
Message-ID: <20110203125357.GA2286@cmpxchg.org> (raw)
In-Reply-To: <20110131162448.e791f0ae.akpm@linux-foundation.org>

On Mon, Jan 31, 2011 at 04:24:48PM -0800, Andrew Morton wrote:
> On Tue, 1 Feb 2011 01:04:55 +0100
> Johannes Weiner <hannes@cmpxchg.org> wrote:
> 
> > Maybe it would be better to use res_counter_margin(cnt) >= wanted
> > throughout the code.
> 
> yup.

Okay, I cleaned it all up a bit for .39.  While doing so, I also found
that we are reclaiming one page too much when pushing back on behalf
of soft limits.

So 1/2 fixes the soft limit reclaim off-by-one-page, and 2/2 reduces
all the limit checks to two functions.

  parent reply	other threads:[~2011-02-03 12:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-31 14:03 Johannes Weiner
2011-01-31 14:03 ` [patch 1/3] memcg: prevent endless loop when charging huge pages Johannes Weiner
2011-01-31 22:27   ` Minchan Kim
2011-01-31 23:48   ` KAMEZAWA Hiroyuki
2011-01-31 14:03 ` [patch 2/3] memcg: prevent endless loop when charging huge pages to near-limit group Johannes Weiner
2011-01-31 22:41   ` Andrew Morton
2011-01-31 23:50     ` KAMEZAWA Hiroyuki
2011-02-01  0:04     ` Johannes Weiner
2011-02-01  0:24       ` Andrew Morton
2011-02-01  0:34         ` Johannes Weiner
2011-02-03 12:53         ` Johannes Weiner [this message]
2011-02-03 12:54           ` [patch 1/2] memcg: soft limit reclaim should end at limit not below Johannes Weiner
2011-02-03 23:41             ` KAMEZAWA Hiroyuki
2011-02-04  4:10             ` Balbir Singh
2011-02-03 12:56           ` [patch 2/2] memcg: simplify the way memory limits are checked Johannes Weiner
2011-02-03 23:44             ` KAMEZAWA Hiroyuki
2011-02-04  4:12             ` Balbir Singh
2011-01-31 22:42   ` [patch 2/3] memcg: prevent endless loop when charging huge pages to near-limit group Minchan Kim
2011-01-31 14:03 ` [patch 3/3] memcg: never OOM when charging huge pages Johannes Weiner
2011-01-31 22:52   ` Minchan Kim
2011-01-31 23:51   ` KAMEZAWA Hiroyuki

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