Re: [PATCH v4 1/3] cgroup/cpuset: return PERR_NOCPUS in remote_partition_enable() on subpartitions_cpus conflict

[Tejun Heo]

Applied to cgroup/for-7.3-fixes with the subject capitalized and the
following tag added:

  Reviewed-by: Waiman Long <longman@xxxxxxxxxx>

Waiman, I kept the original Fixes: tag. 181c8e091aae ("cgroup/cpuset:
Introduce remote partition") added the subpartitions_cpus intersection
check that rejected this configuration in remote_partition_enable(), and
the check stayed through v6.15. 86888c7bd117 ("cgroup/cpuset: Add
warnings to catch inconsistency in exclusive CPUs") turned it into a
WARN_ON_ONCE() and let the enable proceed, which made the overlap
reachable. Tagging the remote partition commit would also send the fix
to stable trees older than v6.16, which don't have the bug. Do you
agree?

Thanks.

--
tejun