linux-kernel - Re: [PATCH 0/7] containers (V7): Generic Process Containers

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Message-Id: <20070212015200.cb795924.pj@sgi.com>
Date:	Mon, 12 Feb 2007 01:52:00 -0800
From:	Paul Jackson <pj@....com>
To:	"Paul Menage" <menage@...gle.com>
Cc:	akpm@...l.org, sekharan@...ibm.com, dev@...ru, xemul@...ru,
	serue@...ibm.com, vatsa@...ibm.com, ebiederm@...ssion.com,
	ckrm-tech@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	rohitseth@...gle.com, mbligh@...gle.com, winget@...gle.com,
	containers@...ts.osdl.org, devel@...nvz.org
Subject: Re: [PATCH 0/7] containers (V7): Generic Process Containers

Paul M, responding to Paul J:
> I think it could be made smarter than that, e.g. have a workqueue task
> that's only woken when a refcount does actually reach zero. (I think
> that waking a workqueue task is something that can be done without too
> much worry about locks)
> 
> >
> > Can you explain to me how this intruded on the reference counting?
> >
> 
> Essentially, it means that anything that releases a reference count on
> a container needs to be able to trigger a call to the release agent.
> The reference count is often released at a point when important locks
> are held, so you end up having to pass buffers into any function that
> might drop a ref count, in order to store a path to a release agent to
> be invoked.

Ok - now that you put it like that - it's much more persuasive.

Consider me sold on this aspect of your proposal, until and unless I
protest otherwise, which is not likely.

Thanks.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.925.600.0401
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