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53d85a2056
Pull cgroup fixes from Tejun Heo: - Fix cgroup rmdir racing with dying tasks. Deferred task cgroup unlink introduced a window where cgroup.procs is empty but the cgroup is still populated, causing rmdir to fail with -EBUSY and selftest failures. Make rmdir wait for dying tasks to fully leave and fix selftests to not depend on synchronous populated updates. - Fix cpuset v1 task migration failure from empty cpusets under strict security policies. When CPU hotplug removes the last CPU from a v1 cpuset, tasks must be migrated to an ancestor without a security_task_setscheduler() check that would block the migration. * tag 'cgroup-for-7.0-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup/cpuset: Skip security check for hotplug induced v1 task migration cgroup/cpuset: Simplify setsched decision check in task iteration loop of cpuset_can_attach() cgroup: Fix cgroup_drain_dying() testing the wrong condition selftests/cgroup: Don't require synchronous populated update on task exit cgroup: Wait for dying tasks to leave on rmdir