33 	struct request_queue *q;  member
313 static void null_queue_bio(struct request_queue *q, struct bio *bio)  in null_queue_bio()  argument
315 	struct nullb *nullb = q->queuedata;  in null_queue_bio()
325 static int null_rq_prep_fn(struct request_queue *q, struct request *req)  in null_rq_prep_fn()  argument
327 	struct nullb *nullb = q->queuedata;  in null_rq_prep_fn()
341 static void null_request_fn(struct request_queue *q)  in null_request_fn()  argument
345 	while ((rq = blk_fetch_request(q)) != NULL) {  in null_request_fn()
348 		spin_unlock_irq(q->queue_lock);  in null_request_fn()
350 		spin_lock_irq(q->queue_lock);  in null_request_fn()
402 	blk_cleanup_queue(nullb->q);  in null_del_dev()
532 		nullb->q = blk_mq_init_queue(&nullb->tag_set);  in null_add_dev()
533 		if (IS_ERR(nullb->q)) {  in null_add_dev()
538 		nullb->q = blk_alloc_queue_node(GFP_KERNEL, home_node);  in null_add_dev()
539 		if (!nullb->q) {  in null_add_dev()
543 		blk_queue_make_request(nullb->q, null_queue_bio);  in null_add_dev()
548 		nullb->q = blk_init_queue_node(null_request_fn, &nullb->lock, home_node);  in null_add_dev()
549 		if (!nullb->q) {  in null_add_dev()
553 		blk_queue_prep_rq(nullb->q, null_rq_prep_fn);  in null_add_dev()
554 		blk_queue_softirq_done(nullb->q, null_softirq_done_fn);  in null_add_dev()
560 	nullb->q->queuedata = nullb;  in null_add_dev()
561 	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, nullb->q);  in null_add_dev()
562 	queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, nullb->q);  in null_add_dev()
575 	blk_queue_logical_block_size(nullb->q, bs);  in null_add_dev()
576 	blk_queue_physical_block_size(nullb->q, bs);  in null_add_dev()
587 	disk->queue		= nullb->q;  in null_add_dev()
593 	blk_cleanup_queue(nullb->q);  in null_add_dev()