linux-kernel - Re: [PATCH] memcg: cgroup fix rmdir hang

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Message-Id: <20090629131037.bdd56fb0.nishimura@mxp.nes.nec.co.jp>
Date:	Mon, 29 Jun 2009 13:10:37 +0900
From:	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	"menage@...gle.com" <menage@...gle.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
Subject: Re: [PATCH] memcg: cgroup fix rmdir hang

On Fri, 26 Jun 2009 15:00:52 +0900, Daisuke Nishimura <nishimura@....nes.nec.co.jp> wrote:
> On Fri, 26 Jun 2009 14:10:20 +0900, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
> > I hope this will be a final bullet..
> > I myself think this one is enough simple and good.
> I think so too :)
> Using test_and_clear_bit() and checking CGRP_WAIT_ON_RMDIR before sleeping
> would be a good idea to make the patch simple.
> 
> > I'm sorry that we need test again.
> No problem.
> I'll test this one this weekend.
> 
It has survived my test(rmdir under memory pressure) this weekend.
Please feel free to add my Tested-by.

	Tested-by: Daisuke Nishimura <nishimura@....nes.nec.co.jp>

Thanks,
Daisuke Nishimura.
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