diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index f70ac724ca7b..b06c88814dde 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5022,12 +5022,6 @@ fail:
 	return NULL;
 }
 
-static void rcu_free_pwq(struct rcu_head *rcu)
-{
-	kmem_cache_free(pwq_cache,
-			container_of(rcu, struct pool_workqueue, rcu));
-}
-
 /*
  * Scheduled on pwq_release_worker by put_pwq() when an unbound pwq hits zero
  * refcnt and needs to be destroyed.
@@ -5073,7 +5067,7 @@ static void pwq_release_workfn(struct kthread_work *work)
 		raw_spin_unlock_irq(&nna->lock);
 	}
 
-	call_rcu(&pwq->rcu, rcu_free_pwq);
+	kfree_rcu(pwq, rcu);
 
 	/*
 	 * If we're the last pwq going away, @wq is already dead and no one