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

[Andrew Morton]

On Thu, 31 Dec 2009 00:10:50 -0500
Ben Blum <bblum at andrew.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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