linux-kernel - Re: [ckrm-tech] [PATCH 3/7] containers (V7): Add generic multi-subsystem API to containers

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Date:	Sat, 24 Mar 2007 18:21:31 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	menage@...gle.com
Cc:	akpm@...l.org, pj@....com, sekharan@...ibm.com, dev@...ru,
	xemul@...ru, serue@...ibm.com, ebiederm@...ssion.com,
	ckrm-tech@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	containers@...ts.osdl.org, mbligh@...gle.com, winget@...gle.com,
	rohitseth@...gle.com, devel@...nvz.org
Subject: Re: [ckrm-tech] [PATCH 3/7] containers (V7): Add generic multi-subsystem API to containers

On Mon, Feb 12, 2007 at 12:15:24AM -0800, menage@...gle.com wrote:
> +static int attach_task(struct container *cont, struct task_struct *tsk)
>  {

[snip]

> +	for_each_subsys(h, ss) {
> +		if (ss->can_attach) {
> +			retval = ss->can_attach(ss, cont, tsk);
> +			if (retval) {
> +				put_task_struct(tsk);

We don't need this put_task_struct(), since our caller
attach_task_by_pid() would do it for us.

> +				return retval;
> +			}
> +		}
>  	}
> -}
> 
> +	/* Locate or allocate a new container_group for this task,
> +	 * based on its final set of containers */
> + 	oldcg = tsk->containers;
> +	newcg = find_container_group(oldcg, cont);
> +	if (!newcg) {
> +		put_task_struct(tsk);

Ditto

> +		return -ENOMEM;
> +	}

-- 
Regards,
vatsa
-
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