On 2013/8/21 22:08, Tejun Heo wrote: > On Wed, Aug 21, 2013 at 06:00:42PM +0800, Li Zefan wrote: >> @@ -2261,7 +2271,8 @@ static void cpuset_hotplug_workfn(struct work_struct >> *work) >> /* synchronize mems_allowed to N_MEMORY */ >> if (mems_updated) { >> mutex_lock(&callback_mutex); >> - top_cpuset.mems_allowed = new_mems; >> + if (!sane) >> + top_cpuset.mems_allowed = new_mems; > > Can you please further explain how the top cgroup behaves? >
top_cpuset.cpus_allowed will always be cpu_active_mask if sane_behavior is not set, otherwise it will always be cpu_possible_mask. While top_cpuset.effective_cpus will always be cpu_active_mask in either case. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/