linux-kernel - Re: [ckrm-tech] [PATCH 1/7] containers (V7): Generic container system abstracted from cpusets code

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Message-ID: <20070307140604.GB32105@in.ibm.com>
Date:	Wed, 7 Mar 2007 19:36:04 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	menage@...gle.com
Cc:	sekharan@...ibm.com, ckrm-tech@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, xemul@...ru, dev@...ru,
	containers@...ts.osdl.org, pj@....com, ebiederm@...ssion.com,
	mbligh@...gle.com, winget@...gle.com, rohitseth@...gle.com,
	serue@...ibm.com, devel@...nvz.org
Subject: Re: [ckrm-tech] [PATCH 1/7] containers (V7): Generic container system abstracted from cpusets code

On Wed, Mar 07, 2007 at 05:51:17PM +0530, Srivatsa Vaddagiri wrote:
> If that is the case, I think we can push container_lock entirely inside 
> cpuset.c and not have others exposed to this double-lock complexity.
> This is possible because cpuset.c (build on top of containers) still has
> cpuset->parent and walking cpuset->parent list safely can be made
> possible with a second lock which is local to only cpuset.c.

Hope I am not shooting in the dark here!

If we can indeed avoid container_lock in generic code, it will simplify
code like attach_task (for ex: post_attach/attach can be clubbed into one 
single callback).

-- 
Regards,
vatsa
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