Re: [patch-final] Re: patch] cpusets, cgroups: disallow attaching kthreadd

[Paul Menage]

On Wed, Oct 19, 2011 at 12:54 AM, Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:
> I really think that if we want to restrain userspace from doing
> something stupid we might as well do something that makes sense,

Totally agreed. There are two solutions proposed, both of which make
sense as a method of solving the problem, and which have different
levels of effect on the existing user-visible API. So which do we
prefer?

If you just want to make sure people think about it before there's a
problem rather than after, then an alternative would be to have a flag
in cgroup_subsys such as allow_kthreadd, which defaults to false and
can be explicitly set to true for subsystems that are kthreadd-safe.

Paul
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