Re: + cgroups-forbid-noprefix-if-mounting-more-than-just-cpuset-subsystem. patch added to -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

On Tue, 2 Jun 2009 23:10:42 +0530
Dhaval Giani <dhaval@linux.vnet.ibm.com> wrote:

> On Tue, Jun 02, 2009 at 09:08:04AM -0700, Paul Menage wrote:
> > On Tue, Jun 2, 2009 at 2:09 AM, Dhaval Giani <dhaval@linux.vnet.ibm.com> wrote:
> > >
> > > I am not sure if this is a good idea. For libcgroup, we would then be
> > > adding a special case for just cpuset. I would rather that we allow it
> > > either for all the subsystems or none of them.
> > >
> > 
> > libcgroup shouldn't be using the noprefix option. Its only intentded
> > use is to allow the legacy "cpuset" filesystem type to be mounted and
> > to see the same fileset as it had before the cgroups transition.
> > 
> 
> It does not. But if some user is using that option, we need to be in a
> position to handle it.
> 
> I am quite happy not supporting the noprefix option in the library if it
> is fine.
> 

fyi, the above discussion transitions akpm into the "confused" state. 
I'll keep the patch on hold until akpm transitions back out of that
state.