linux-kernel - Re: [PATCH] res_counter: fix off-by-one bug in setting limit

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Message-ID: <48BB8B77.7060508@linux.vnet.ibm.com>
Date:	Mon, 01 Sep 2008 11:58:07 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Li Zefan <lizf@...fujitsu.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Pavel Emelianov <xemul@...nvz.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] res_counter: fix off-by-one bug in setting limit

Li Zefan wrote:
> I found we can no longer set limit to 0 with 2.6.27-rcX:
>  # mount -t cgroup -omemory xxx /mnt
>  # mkdir /mnt/0
>  # echo 0 > /mnt/0/memory.limit_in_bytes
>  bash: echo: write error: Device or resource busy
> 
> It turned out 'limit' can't be set to 'usage', which is wrong IMO.
> 
> Signed-off-by: Li Zefan <lizf@...fujitsu.com>

OK, based on Kamezawa's feedback and looking at the patch

Acked-by: Balbir Singh <balbir@...ux.vnet.ibm.com>

-- 
	Balbir
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