static inline bool has_children(struct dev_cgroup *devcgroup)
{
- struct cgroup *cgrp = devcgroup->css.cgroup;
+ bool ret;
- return !list_empty(&cgrp->children);
+ /*
+ * FIXME: There may be lingering offline csses and this function
+ * may return %true when there isn't any userland-visible child
+ * which is incorrect for our purposes.
+ */
+ rcu_read_lock();
+ ret = css_next_child(NULL, &devcgroup->css);
+ rcu_read_unlock();
+ return ret;
}
/*