linux-kernel - Re: [PATCH 3/3] make 'none' field a flag

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Message-ID: <4EE80564.7030608@cn.fujitsu.com>
Date:	Wed, 14 Dec 2011 10:09:40 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Glauber Costa <glommer@...allels.com>,
	linux-kernel@...r.kernel.org, jbottomley@...allels.com,
	cgroups@...r.kernel.org, bsingharora@...il.com, devel@...nvz.org,
	kamezawa.hiroyu@...fujitsu.com
Subject: Re: [PATCH 3/3] make 'none' field a flag

于 2011年12月13日 23:41, Tejun Heo 写道:
> On Sun, Dec 11, 2011 at 03:45:38PM +0100, Glauber Costa wrote:
>> There is no reason to have a flags field, and then a separate
>> bool field just to indicate if 'none' subsystem were explicitly
>> requested.
>>
>> Make it a flag
>>
>> Signed-off-by: Glauber Costa <glommer@...allels.com>
> 
> Same as the previous patch.  Doesn't this change how remount
> conditions are checked?
> 

Right. The patch prevents us from doing:

	# mount -t cgroup -o none,name=tmp xxx /mnt
	# mount -o remount,cpuset xxx /mnt
	(failed)
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