Commits
Li Zefan committed cc045e39521
cgroup: deal with dummp_top in cgroup_name() and cgroup_path() My kernel fails to boot, because blkcg calls cgroup_path() while cgroupfs is not mounted. Fix both cgroup_name() and cgroup_path(). Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>