Re: [PATCH v2] cgroup/cpuset: Clarify the delegation rules of partition

[Waiman Long]

On 4/30/26 3:46 PM, Michal Koutný wrote:
> On Tue, Apr 28, 2026 at 02:09:35PM -0400, Waiman Long <longman@xxxxxxxxxx> wrote:
> > Creation of remote partition is currently not allowed without privilege.
> > On the other hand, creation of local partition is allowed without
> > privilege as long as its parent is also a partition root.
> >
> > The current setup allows a delegator to delegate an exclusive set of
> > CPUs to the delegatee by making the root of a delegated sub-hierarchy
> > a partition root. The delegatee is then allowed to create a local
> > sub-partition underneath it if necessary. Creation of a remote
> > partition is not currently allowed across delegation boundary without
> > privilege. Clarify the partition delegation rules by stating the current
> > behavior in cgroup-v2.rst file.
> >
> > Signed-off-by: Waiman Long <longman@xxxxxxxxxx>
> > ---
> >   Documentation/admin-guide/cgroup-v2.rst | 12 ++++++++++--
> >   1 file changed, 10 insertions(+), 2 deletions(-)
> After Tejun pointed out that other generic paragraph:
> | This means that the controller interface files - anything which
> | doesn't start with "cgroup." are owned by the parent rather than the
> | cgroup itself.
>
> I think the extra words may only increase confusion (and constrain
> generic changes). So it was a good exercise but nothing needs to be
> necessarily changed regarding this behaivor or its docs.

That is fine. This doc change is optional and I agree that we may want 
more flexibility in case we change the behavior in the future.

Cheers,
Longman