blkcg_unpin_online(blkcg);
fprop_local_destroy_percpu(&wb->memcg_completions);
- percpu_ref_exit(&wb->refcnt);
spin_lock_irq(&cgwb_lock);
list_del(&wb->offline_node);
spin_unlock_irq(&cgwb_lock);
+ percpu_ref_exit(&wb->refcnt);
wb_exit(wb);
WARN_ON_ONCE(!list_empty(&wb->b_attached));
kfree_rcu(wb, rcu);