Commits
Tejun Heo committed 54504e977ce
cgroup: cgroup_idr_lock should be bh cgroup_idr_remove() can be invoked from bh leading to lockdep detecting possible AA deadlock (IN_BH/ON_BH). Make the lock bh-safe. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>