On Thu, Jun 29, 2023 at 08:11:33AM -0400, Waiman Long <longman@xxxxxxxxxx> wrote: > So I think you should just use > cgroup_subsys_on_dfl(cpuset_cgrp_subsys) as the v2 check if your focus > is just to prevent problem when enabling cpuset controller. I thought the bare cgroup_subsys_on_dfl(cpuset_cgrp_subsys) is not used in cpuset.c but I was wrong -- yes, I'll change this. > This change will likely conflict with the latest cpuset change on tracking # > of dl tasks in a cpuset. You will have to, at least, move the dl task check > before the security_task_setscheduler() check. > > Another fact about cpuset controller enabling is that both cpus_allowed and > mems_allowed are empty at that point. You may also add these checks as a > preconditions for disabling the security_task_setscheduler check. Ah, I will rebase on fresh mainline (or do you mean another reference?). Thanks for the hints, Michal
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