[Devel] Re: [PATCH][DOCUMENTATION] Minimal controller code for a quick start

[Paul Menage]

On Feb 7, 2008 12:28 PM, Peter Zijlstra <a.p.zijlstra at chello.nl> wrote:
>
> While on the subject, could someone document struct cgroup_subsys.

There's documentation for all the methods in Documentation/cgroup.txt

> particular, I've wondered why we have: cgroup_subsys::can_attach() and
> not use a return value in cgroup_subsys::attach()?

We could do in theory do that, but it would make the recovery logic in
cgroup.c:attach_task() more complex - it would have to be able to deal
with undoing a partial attach. It seems simpler to just split it into
two phases, given that most cgroups don't appear to have attachment
conditions anyway.

Paul
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