[PATCH 1/4] dev_cgroup: keep track of which cgroup is the root cgroup

[Serge Hallyn]

Quoting Glauber Costa (glommer at parallels.com):
> On 03/15/2013 06:07 PM, Serge Hallyn wrote:
> > Quoting Glauber Costa (glommer at parallels.com):
> >> Most of the other subsystems already keep track of that in some way.  We
> >> will do that internally and provide a test to determine whether or not
> >> our task is in a device cgroup that is not the root one. We can relax
> >> some of our checks in that case, trusting that whoever set device cgroup
> >> rules will be responsible to control access to their devices.
> >>
> >> Signed-off-by: Glauber Costa <glommer at parallels.com>
> >> Cc: Aristeu Rozanski <aris at redhat.com>
> >> Cc: Eric Biederman <ebiederm at xmission.com>
> >> Cc: Serge Hallyn <serge.hallyn at canonical.com>
> > 
> > Patch looks fine.  AFAIK we're still waiting on Aristeu's patchset to
> > hit upstream.  As your patches are simpler I'd prefer, if there is
> > churn, for yours to be refactored than his.
> > 
> I have no problem with that. There is also a small build issue here that
> needs to be fixed. If you allow me, with my guarantees that the patch
> will be preserved in spirit I will keep your ack after any refactoring =)
> 

Of course :)  Please keep my ack on it so long as you don't feel any
substantive changes were needed :)

-serge