Tejun Heo 7941cb027d cgroup: make cgroup_event hold onto cgroup_subsys_state instead of cgroup
Currently, each registered cgroup_event holds an extra reference to
the cgroup.  This is a bit weird as events are subsystem specific and
will also be incorrect in the planned unified hierarchy as css
(cgroup_subsys_state) may come and go dynamically across the lifetime
of a cgroup.  Holding onto cgroup won't prevent the target css from
going away.

Update cgroup_event to hold onto the css the traget file belongs to
instead of cgroup.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
2013-08-26 18:40:56 -04:00
..
2013-07-06 12:37:04 -07:00
2013-04-22 07:09:06 -07:00
2012-05-31 17:49:27 -07:00
2012-03-28 18:30:03 +01:00
2013-04-15 13:25:16 +02:00
2013-07-10 18:11:34 -07:00
2013-06-25 23:11:19 +02:00
2012-12-20 17:40:19 -08:00
2012-05-29 23:28:41 -04:00
2013-07-02 15:38:19 +09:30
2013-07-03 16:08:05 -07:00
2013-05-05 00:16:35 -04:00
2013-04-30 17:04:03 -07:00
2013-04-29 13:55:38 -07:00