diff options
| author | Tejun Heo <tj@kernel.org> | 2014-05-14 09:15:02 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-05-14 09:15:02 -0400 |
| commit | 25e15d835036a70a53dcc993beaa036f8919a373 (patch) | |
| tree | 614c37af62fefd7aebb697de761f04e5aa082dd3 | |
| parent | 249f3468a282dcbad53484c821bebb447f14ee03 (diff) | |
cgroup: bounce css release through css->destroy_work
css release is planned to do more and would require process context.
Bounce it through css->destroy_work.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
| -rw-r--r-- | kernel/cgroup.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 4a94b0be598d..e694f4153edb 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -4126,10 +4126,10 @@ static void css_free_rcu_fn(struct rcu_head *rcu_head) queue_work(cgroup_destroy_wq, &css->destroy_work); } -static void css_release(struct percpu_ref *ref) +static void css_release_work_fn(struct work_struct *work) { struct cgroup_subsys_state *css = - container_of(ref, struct cgroup_subsys_state, refcnt); + container_of(work, struct cgroup_subsys_state, destroy_work); struct cgroup_subsys *ss = css->ss; cgroup_idr_remove(&ss->css_idr, css->id); @@ -4137,6 +4137,15 @@ static void css_release(struct percpu_ref *ref) call_rcu(&css->rcu_head, css_free_rcu_fn); } +static void css_release(struct percpu_ref *ref) +{ + struct cgroup_subsys_state *css = + container_of(ref, struct cgroup_subsys_state, refcnt); + + INIT_WORK(&css->destroy_work, css_release_work_fn); + queue_work(cgroup_destroy_wq, &css->destroy_work); +} + static void init_and_link_css(struct cgroup_subsys_state *css, struct cgroup_subsys *ss, struct cgroup *cgrp) { |