251 	const struct block_device *part = dev_to_bdev(dev);  in part_uevent()  local
253 	add_uevent_var(env, "PARTN=%u", bdev_partno(part));  in part_uevent()
254 	if (part->bd_meta_info && part->bd_meta_info->volname[0])  in part_uevent()
255 		add_uevent_var(env, "PARTNAME=%s", part->bd_meta_info->volname);  in part_uevent()
266 void drop_partition(struct block_device *part)  in drop_partition()  argument
268 	lockdep_assert_held(&part->bd_disk->open_mutex);  in drop_partition()
270 	xa_erase(&part->bd_disk->part_tbl, bdev_partno(part));  in drop_partition()
271 	kobject_put(part->bd_holder_dir);  in drop_partition()
273 	device_del(&part->bd_device);  in drop_partition()
274 	put_device(&part->bd_device);  in drop_partition()
401 	struct block_device *part;  in partition_overlaps()  local
406 	xa_for_each_start(&disk->part_tbl, idx, part, 1) {  in partition_overlaps()
407 		if (bdev_partno(part) != skip_partno &&  in partition_overlaps()
408 		    start < part->bd_start_sect + bdev_nr_sectors(part) &&  in partition_overlaps()
409 		    start + length > part->bd_start_sect) {  in partition_overlaps()
422 	struct block_device *part;  in bdev_add_partition()  local
441 	part = add_partition(disk, partno, start, length,  in bdev_add_partition()
443 	ret = PTR_ERR_OR_ZERO(part);  in bdev_add_partition()
451 	struct block_device *part = NULL;  in bdev_del_partition()  local
455 	part = xa_load(&disk->part_tbl, partno);  in bdev_del_partition()
456 	if (!part)  in bdev_del_partition()
460 	if (atomic_read(&part->bd_openers))  in bdev_del_partition()
464 	 * We verified that @part->bd_openers is zero above and so  in bdev_del_partition()
465 	 * @part->bd_holder{_ops} can't be set. And since we hold  in bdev_del_partition()
468 	 * So no need to call @part->bd_holder_ops->mark_dead() here.  in bdev_del_partition()
472 	bdev_unhash(part);  in bdev_del_partition()
473 	invalidate_bdev(part);  in bdev_del_partition()
474 	drop_partition(part);  in bdev_del_partition()
484 	struct block_device *part = NULL;  in bdev_resize_partition()  local
488 	part = xa_load(&disk->part_tbl, partno);  in bdev_resize_partition()
489 	if (!part)  in bdev_resize_partition()
493 	if (start != part->bd_start_sect)  in bdev_resize_partition()
500 	bdev_set_nr_sectors(part, length);  in bdev_resize_partition()
526 	struct block_device *part;  in blk_add_partition()  local
556 	part = add_partition(disk, p, from, size, state->parts[p].flags,  in blk_add_partition()
558 	if (IS_ERR(part)) {  in blk_add_partition()
559 		if (PTR_ERR(part) != -ENXIO) {  in blk_add_partition()
561 			       disk->disk_name, p, part);  in blk_add_partition()
568 		md_autodetect_dev(part->bd_dev);  in blk_add_partition()
636 	struct block_device *part;  in bdev_disk_changed()  local
651 	xa_for_each_start(&disk->part_tbl, idx, part, 1) {  in bdev_disk_changed()
657 		bdev_unhash(part);  in bdev_disk_changed()
664 		WARN_ON_ONCE(atomic_read(&part->bd_openers));  in bdev_disk_changed()
665 		invalidate_bdev(part);  in bdev_disk_changed()
666 		drop_partition(part);  in bdev_disk_changed()