diff options
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index bb263d0caab..29a7b2cc593 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1909,7 +1909,7 @@ static void cgroup_kill_sb(struct super_block *sb) * * And don't kill the default root. */ - if (css_has_online_children(&root->cgrp.self) || + if (!list_empty(&root->cgrp.self.children) || root == &cgrp_dfl_root) cgroup_put(&root->cgrp); else @@ -3077,7 +3077,7 @@ static int cgroup_add_file(struct cgroup *cgrp, struct cftype *cft) #endif kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), cgroup_file_mode(cft), 0, cft->kf_ops, cft, - NULL, false, key); + NULL, key); if (IS_ERR(kn)) return PTR_ERR(kn); @@ -4373,16 +4373,20 @@ static void css_free_work_fn(struct work_struct *work) { struct cgroup_subsys_state *css = container_of(work, struct cgroup_subsys_state, destroy_work); + struct cgroup_subsys *ss = css->ss; struct cgroup *cgrp = css->cgroup; percpu_ref_exit(&css->refcnt); - if (css->ss) { + if (ss) { /* css free path */ + int id = css->id; + if (css->parent) css_put(css->parent); - css->ss->css_free(css); + ss->css_free(css); + cgroup_idr_remove(&ss->css_idr, id); cgroup_put(cgrp); } else { /* cgroup free path */ @@ -4434,7 +4438,7 @@ static void css_release_work_fn(struct work_struct *work) if (ss) { /* css release path */ - cgroup_idr_remove(&ss->css_idr, css->id); + cgroup_idr_replace(&ss->css_idr, NULL, css->id); if (ss->css_released) ss->css_released(css); } else { |