io-wq: delete dead lock shuffling code

We used to have more code around the work loop, but now the goto and
lock juggling just makes it less readable than it should. Get rid of it.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: axboe

fs/io-wq.c

@@ -547,7 +547,7 @@ static void io_worker_handle_work(struct io_worker *worker)
 
 	do {
 		struct io_wq_work *work;
-get_next:
+
 		/*
 		 * If we got some work, mark us as busy. If we didn't, but
 		 * the list isn't empty, it means we stalled on hashed work.
@@ -606,11 +606,6 @@ static void io_worker_handle_work(struct io_worker *worker)
 				spin_unlock_irq(&wq->hash->wait.lock);
 				if (wq_has_sleeper(&wq->hash->wait))
 					wake_up(&wq->hash->wait);
-				raw_spin_lock(&wqe->lock);
-				/* skip unnecessary unlock-lock wqe->lock */
-				if (!work)
-					goto get_next;
-				raw_spin_unlock(&wqe->lock);
 			}
 		} while (work);