254 	const struct block_device *part = dev_to_bdev(dev);  in part_uevent()  local
256 	add_uevent_var(env, "PARTN=%u", bdev_partno(part));  in part_uevent()
257 	if (part->bd_meta_info && part->bd_meta_info->volname[0])  in part_uevent()
258 		add_uevent_var(env, "PARTNAME=%s", part->bd_meta_info->volname);  in part_uevent()
259 	if (part->bd_meta_info && part->bd_meta_info->uuid[0])  in part_uevent()
260 		add_uevent_var(env, "PARTUUID=%s", part->bd_meta_info->uuid);  in part_uevent()
271 void drop_partition(struct block_device *part)  in drop_partition()  argument
273 	lockdep_assert_held(&part->bd_disk->open_mutex);  in drop_partition()
275 	xa_erase(&part->bd_disk->part_tbl, bdev_partno(part));  in drop_partition()
276 	kobject_put(part->bd_holder_dir);  in drop_partition()
278 	device_del(&part->bd_device);  in drop_partition()
279 	put_device(&part->bd_device);  in drop_partition()
409 	struct block_device *part;  in partition_overlaps()  local
414 	xa_for_each_start(&disk->part_tbl, idx, part, 1) {  in partition_overlaps()
415 		if (bdev_partno(part) != skip_partno &&  in partition_overlaps()
416 		    start < part->bd_start_sect + bdev_nr_sectors(part) &&  in partition_overlaps()
417 		    start + length > part->bd_start_sect) {  in partition_overlaps()
430 	struct block_device *part;  in bdev_add_partition()  local
449 	part = add_partition(disk, partno, start, length,  in bdev_add_partition()
451 	ret = PTR_ERR_OR_ZERO(part);  in bdev_add_partition()
459 	struct block_device *part = NULL;  in bdev_del_partition()  local
463 	part = xa_load(&disk->part_tbl, partno);  in bdev_del_partition()
464 	if (!part)  in bdev_del_partition()
468 	if (atomic_read(&part->bd_openers))  in bdev_del_partition()
472 	 * We verified that @part->bd_openers is zero above and so  in bdev_del_partition()
473 	 * @part->bd_holder{_ops} can't be set. And since we hold  in bdev_del_partition()
476 	 * So no need to call @part->bd_holder_ops->mark_dead() here.  in bdev_del_partition()
480 	bdev_unhash(part);  in bdev_del_partition()
481 	invalidate_bdev(part);  in bdev_del_partition()
482 	drop_partition(part);  in bdev_del_partition()
492 	struct block_device *part = NULL;  in bdev_resize_partition()  local
496 	part = xa_load(&disk->part_tbl, partno);  in bdev_resize_partition()
497 	if (!part)  in bdev_resize_partition()
501 	if (start != part->bd_start_sect)  in bdev_resize_partition()
508 	bdev_set_nr_sectors(part, length);  in bdev_resize_partition()
534 	struct block_device *part;  in blk_add_partition()  local
564 	part = add_partition(disk, p, from, size, state->parts[p].flags,  in blk_add_partition()
566 	if (IS_ERR(part)) {  in blk_add_partition()
567 		if (PTR_ERR(part) != -ENXIO) {  in blk_add_partition()
569 			       disk->disk_name, p, part);  in blk_add_partition()
576 		md_autodetect_dev(part->bd_dev);  in blk_add_partition()
644 	struct block_device *part;  in bdev_disk_changed()  local
659 	xa_for_each_start(&disk->part_tbl, idx, part, 1) {  in bdev_disk_changed()
665 		bdev_unhash(part);  in bdev_disk_changed()
672 		WARN_ON_ONCE(atomic_read(&part->bd_openers));  in bdev_disk_changed()
673 		invalidate_bdev(part);  in bdev_disk_changed()
674 		drop_partition(part);  in bdev_disk_changed()