io-wq: remove now unused IO_WQ_BIT_ERROR

This flag is now dead, remove it.

Fixes: 1cbd9c2b ("io-wq: don't create any IO workers upfront")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/io-wq.c

@@ -32,7 +32,6 @@ enum {
 
 enum {
 	IO_WQ_BIT_EXIT		= 0,	/* wq exiting */
-	IO_WQ_BIT_ERROR		= 1,	/* error on setup */
 };
 
 enum {
@@ -733,7 +732,6 @@ static int io_wq_manager(void *data)
 {
 	struct io_wq *wq = data;
 	char buf[TASK_COMM_LEN];
-	int node;
 
 	sprintf(buf, "iou-mgr-%d", wq->task_pid);
 	set_task_comm(current, buf);
@@ -751,14 +749,6 @@ static int io_wq_manager(void *data)
 	} while (!test_bit(IO_WQ_BIT_EXIT, &wq->state));
 
 	io_wq_check_workers(wq);
-
-	/* if ERROR is set and we get here, we have workers to wake */
-	if (test_bit(IO_WQ_BIT_ERROR, &wq->state)) {
-		rcu_read_lock();
-		for_each_node(node)
-			io_wq_for_each_worker(wq->wqes[node], io_wq_worker_wake, NULL);
-		rcu_read_unlock();
-	}
 	wq->manager = NULL;
 	io_wq_put(wq);
 	do_exit(0);