linux-kernel - Re: [PATCHSET cgroup/for-3.15] cgroup: implement unified hierarchy

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Date:	Tue, 15 Apr 2014 10:58:24 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Vivek Goyal <vgoyal@...hat.com>,
	<containers@...ts.linux-foundation.org>, <cgroups@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCHSET cgroup/for-3.15] cgroup: implement unified hierarchy

on 2014/4/15 3:21, Tejun Heo wrote:
> Hello,
> 
> On Mon, Apr 14, 2014 at 02:14:21PM -0400, Vivek Goyal wrote:
>> So is this an intermediate mode before we move to single hiearchy *only*
>> mode. AFAIK, you had mentioned that we will support legacy multiple
>> hiearchy mode but single hiearchy is the new default mode.
> 
> Hmmm?  It's a separate special hierarchy which can co-exist with other
> hierarchies.  There's no inherent intermediacy to it.  As long as
> traditional hierarchies exist, it's gonna be like this.
> 

I know we should allow multiple hierarchies, but why we allow this even
if sane_behavior is specified?

Like this:

# mount -t cgroup -o cpuset,__DEVEL__sane_behavior xxx /cgroup
# mount -t cgroup -o __DEVEL__sane_behavior xxx /cgroup2/


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