On Thu, Jun 12, 2014 at 02:31:31PM +0800, Li Zefan wrote: > After running: > > # mount -t cgroup cpu xxx /cgroup && mkdir /cgroup/sub && \ > rmdir /cgroup/sub && umount /cgroup > > I found the cgroup root still existed: > > # cat /proc/cgroups > #subsys_name hierarchy num_cgroups enabled > cpuset 0 1 1 > cpu 1 1 1 > ... > > It turned out css_has_online_children() is broken. > > Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx> Applied to cgroup/for-3.16-fixes. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html