linux-kernel - Re: [PATCH v4 0/4] cgroups: support for module-loadable subsystems

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Message-Id: <20100106160414.bd555474.akpm@linux-foundation.org>
Date:	Wed, 6 Jan 2010 16:04:14 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ben Blum <bblum@...rew.cmu.edu>
Cc:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, lizf@...fujitsu.com,
	menage@...gle.com
Subject: Re: [PATCH v4 0/4] cgroups: support for module-loadable subsystems

On Thu, 31 Dec 2009 00:10:50 -0500
Ben Blum <bblum@...rew.cmu.edu> wrote:

> This patch series implements support for building, loading, and
> unloading subsystems as modules, both within and outside the kernel
> source tree. It provides an interface cgroup_load_subsys() and
> cgroup_unload_subsys() which modular subsystems can use to register and
> depart during runtime. The net_cls classifier subsystem serves as the
> example for a subsystem which can be converted into a module using these
> changes.

What is the value in this?  What are the usage scenarios?  Why does the
benefit of this change exceed the cost/risk/etc of merging it?
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