On Sat, Feb 21, 2026 at 01:54:17PM -0500, Waiman Long wrote: > The cpuset_handle_hotplug() may need to invoke housekeeping_update(), > for instance, when an isolated partition is invalidated because its > last active CPU has been put offline. > > As we are going to enable dynamic update to the nozh_full housekeeping > cpumask (HK_TYPE_KERNEL_NOISE) soon with the help of CPU hotplug, > allowing the CPU hotplug path to call into housekeeping_update() directly > from update_isolation_cpumasks() will likely cause deadlock.
It would be nice to describe the deadlock scenario here. Thanks.
