tree 04c0fa6f056395f8d17b5cd918403547be3f1425
parent 4b8b47eb0001a89f271d671d959b235faa8f03e2
author Tejun Heo <tj@kernel.org> 1353341618 -0800
committer Tejun Heo <tj@kernel.org> 1353341618 -0800

cgroup: allow ->post_create() to fail

There could be cases where controllers want to do initialization
operations which may fail from ->post_create().  This patch makes
->post_create() return -errno to indicate failure and online_css()
relay such failures.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Glauber Costa <glommer@parallels.com>