tree 5e17d543a77f3783e4cfce7f525f4c3255238c07
parent b48c6a80a0f7584056f768268fc12b87745a393f
author Tejun Heo <tj@kernel.org> 1353341616 -0800
committer Tejun Heo <tj@kernel.org> 1353341616 -0800

cgroup: lock cgroup_mutex in cgroup_init_subsys()

Make cgroup_init_subsys() grab cgroup_mutex while initializing a
subsystem so that all helpers and callbacks are called under the
context they expect.  This isn't strictly necessary as
cgroup_init_subsys() doesn't race with anybody but will allow adding
lockdep assertions.

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