linux-kernel - Re: [PATCH 2/3] cgroup: add cgroup

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Date:	Wed, 27 Feb 2013 18:49:12 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Al Viro <viro@...iv.linux.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>
Subject: Re: [PATCH 2/3] cgroup: add cgroup_name() API

On 2013/2/26 21:26, Tejun Heo wrote:
> Hello,
> 
> On Tue, Feb 26, 2013 at 2:25 AM, Li Zefan <lizefan@...wei.com> wrote:
>> Sure we can. We'll have to allocate cgrp->name in cgroup_remount() and
>> cgroup_init(), and free cgrp->name in cgroup_kill_sb(). It looks to me
>> the current version is a bit simpler.
> 
> Can't we just set it to constant "/"?  Root cgroup init is a separate
> path anyway.
> 

Well, cgrp->name is a pointer to struct cgroup_name.

At first I tried to declare cgrp->name as char *, and use container_of()
to get struct cgroup_name, but it didn't result in simpler code.

So seems there's no way that is a pure win over another.

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