nvme/host/multipath.c

59 		if (h->disk)
60 			blk_mq_unfreeze_queue(h->disk->queue);
69 		if (h->disk)
70 			blk_mq_freeze_queue_wait(h->disk->queue);
79 		if (h->disk)
80 			blk_freeze_queue_start(h->disk->queue);
104 		bio_set_dev(bio, ns->head->disk->part0);
128 	struct gendisk *disk = ns->head->disk;
130 	if (!blk_queue_io_stat(disk->queue) || blk_rq_is_passthrough(rq))
134 	nvme_req(rq)->start_time = bdev_start_io_acct(disk->part0, req_op(rq),
145 	bdev_end_io_acct(ns->head->disk->part0, req_op(rq),
156 		if (!ns->head->disk)
160 			disk_uevent(ns->head->disk, KOBJ_CHANGE);
208 	sector_t capacity = get_capacity(head->disk);
214 		if (capacity != get_capacity(ns->disk))
378 	struct device *dev = disk_to_dev(head->disk);
394 		bio_set_dev(bio, ns->disk->part0);
396 		trace_block_bio_remap(bio, disk_devt(ns->head->disk),
414 static int nvme_ns_head_open(struct gendisk *disk, blk_mode_t mode)
416 	if (!nvme_tryget_ns_head(disk->private_data))
421 static void nvme_ns_head_release(struct gendisk *disk)
423 	nvme_put_ns_head(disk->private_data);
427 static int nvme_ns_head_report_zones(struct gendisk *disk, sector_t sector,
430 	struct nvme_ns_head *head = disk->private_data;
541 	head->disk = blk_alloc_disk(&lim, ctrl->numa_node);
542 	if (IS_ERR(head->disk))
543 		return PTR_ERR(head->disk);
544 	head->disk->fops = &nvme_ns_head_ops;
545 	head->disk->private_data = head;
546 	sprintf(head->disk->disk_name, "nvme%dn%d",
549 	blk_queue_flag_set(QUEUE_FLAG_NONROT, head->disk->queue);
550 	blk_queue_flag_set(QUEUE_FLAG_NOWAIT, head->disk->queue);
551 	blk_queue_flag_set(QUEUE_FLAG_IO_STAT, head->disk->queue);
560 		blk_queue_flag_set(QUEUE_FLAG_POLL, head->disk->queue);
565 	blk_queue_write_cache(head->disk->queue, vwc, vwc);
574 	if (!head->disk)
583 		rc = device_add_disk(&head->subsys->dev, head->disk,
873 	if (blk_queue_stable_writes(ns->queue) && ns->head->disk)
875 				   ns->head->disk->queue);
877 	if (blk_queue_is_zoned(ns->queue) && ns->head->disk)
878 		ns->head->disk->nr_zones = ns->disk->nr_zones;
884 	if (!head->disk)
889 		del_gendisk(head->disk);
895 	if (!head->disk)
900 	put_disk(head->disk);