Re: [PATCH cgroup/for-3.16] cgroup: disallow debug controller on the default hierarchy

[Tejun Heo <tj@kernel.org>]

On Wed, May 14, 2014 at 07:33:07PM -0400, Tejun Heo wrote:
> The debug controller, as its name suggests, exposes cgroup core
> internals to userland to aid debugging.  Unfortunately, except for the
> name, there's no provision to prevent its usage in production
> configurations and the controller is widely enabled and mounted
> leaking internal details to userland.  Like most other debug
> information, the information exposed by debug isn't interesting even
> for debugging itself once the related parts are working reliably.
> 
> This controller has no reason for existing.  This patch implements
> cgrp_dfl_root_inhibit_ss_mask which can suppress specific subsystems
> on the default hierarchy and adds the debug subsystem to it so that it
> can be gradually deprecated as usages move towards the unified
> hierarchy.
> 
> Signed-off-by: Tejun Heo <tj@kernel.org>

Applied to cgroup/for-3.16.

Thanks.

-- 
tejun