linux-kernel - Re: [PATCH] memcg: fix event counting breakage by recent THP update

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Message-ID: <20110201093430.GF19534@cmpxchg.org>
Date:	Tue, 1 Feb 2011 10:34:30 +0100
From:	Johannes Weiner <hannes@...xchg.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>
Subject: Re: [PATCH] memcg: fix event counting breakage by recent THP update

On Tue, Feb 01, 2011 at 09:12:08AM +0900, KAMEZAWA Hiroyuki wrote:
> 
> Thanks to Johannes for catching this.
> And sorry for my patch, I'd like to consinder some debug check..
> =
> Changes in commit e401f1761c0b01966e36e41e2c385d455a7b44ee
> adds nr_pages to support multiple page size in memory_cgroup_charge_statistics.
> 
> But counting the number of event nees abs(nr_pages) for increasing
> counters. This patch fixes event counting.
> 
> Reported-by: Johannes Weiner <hannes@...xchg.org>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

Reviewed-by: Johannes Weiner <hannes@...xchg.org>
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