linux-kernel - Re: Question for remount

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Message-ID: <49A35048.3000304@cn.fujitsu.com>
Date:	Tue, 24 Feb 2009 09:41:28 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	menage@...gle.com, containers@...ts.linux-foundation.org
Subject: Re: Question for remount

>>  To change the set of subsystems bound to a mounted hierarchy, just
>>  remount with different options:
>> +# mount -o remount,cpuset,ns hier1 /dev/cgroup
>>  
>> -# mount -o remount,cpuset,ns  /dev/cgroup
>> +Now numtasks is removed from the hierarchy and ns is added.
>> +
>> +Note this will add ns to the hierarchy but won't remove numtasks or
>> +cpuset:
>> +# mount -o remount,ns /dev/cgroup
>>  
> 
> Just a question. What is "numtasks" here ? We have numtasks cgroup ?
> 

No, I guess that's a proposed but not implemented cgroup subsystem. :)
And I can change it to an existing one.

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