linux-kernel - Re: [PATCH -mm] remove node_ prefix

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Date:	Thu, 22 May 2008 09:36:23 +0200
From:	Cedric Le Goater <clg@...ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Paul Menage <menage@...gle.com>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.osdl.org>
Subject: Re: [PATCH -mm] remove node_ prefix_from ns subsystem

Andrew Morton wrote:
> On Thu, 22 May 2008 00:11:56 -0700 "Paul Menage" <menage@...gle.com> wrote:
> 
>> On Wed, May 21, 2008 at 10:06 PM, Andrew Morton
>> <akpm@...ux-foundation.org> wrote:
>>>> --- 2.6.26-rc2-mm1.orig/kernel/cgroup.c
>>>> +++ 2.6.26-rc2-mm1/kernel/cgroup.c
>>>> @@ -2903,7 +2903,7 @@ int cgroup_clone(struct task_struct *tsk
>>>>       cg = tsk->cgroups;
>>>>       parent = task_cgroup(tsk, subsys->subsys_id);
>>>>
>>>> -     snprintf(nodename, MAX_CGROUP_TYPE_NAMELEN, "node_%d", tsk->pid);
>>>> +     snprintf(nodename, MAX_CGROUP_TYPE_NAMELEN, "%d", tsk->pid);
>>>>
>>>>       /* Pin the hierarchy */
>>>>       atomic_inc(&parent->root->sb->s_active);
>>> This is user-visible, isn't it?  Been there since October.  How can we
>>> safely change it now?
>> It is user-visible, but I'd be extremely surprised if anyone was
>> depending on it or even using it at this point.
> 
> After six months?

yes that's what we believe also.

> Oh well, I guess the number is small, and they'll know how to fix it.
> 
> What is the reason for making this change?

the 'node_' prefix really is superfluous and misleading. what's a node ?

C.
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