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

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Date:	Thu, 28 Feb 2013 14:53:19 +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 2013/2/27 21:23, Tejun Heo wrote:
> On Wed, Feb 27, 2013 at 2:49 AM, Li Zefan <lizefan@...wei.com> wrote:
>> 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.
> 
> Hmmm?  But then what prevents defining const struct cgroup_name?
> 
> static const struct cgroup_name root_cgroup_name = { .name = "/" };

Can't... That's char name[0] not char *name.

I'll allocate a global struct cgroup_name *root_cgroup_name, and use it
for all root_cgroup->name and dummytop->name.

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