SUNRPC: Test whether the task is queued before grabbing the queue spinlocks (5ce97039) · Commits · 戴 / test

net/sunrpc/sched.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -479,6 +479,8 @@ void rpc_wake_up_queued_task_on_wq(struct workqueue_struct *wq,
		struct rpc_wait_queue *queue,
		struct rpc_task *task)
		{
		if (!RPC_IS_QUEUED(task))
		return;
		spin_lock_bh(&queue->lock);
		rpc_wake_up_task_on_wq_queue_locked(wq, queue, task);
		spin_unlock_bh(&queue->lock);
		@@ -489,6 +491,8 @@ void rpc_wake_up_queued_task_on_wq(struct workqueue_struct *wq,
		*/
		void rpc_wake_up_queued_task(struct rpc_wait_queue queue, struct rpc_task task)
		{
		if (!RPC_IS_QUEUED(task))
		return;
		spin_lock_bh(&queue->lock);
		rpc_wake_up_task_queue_locked(queue, task);
		spin_unlock_bh(&queue->lock);