241 void delete_partition(struct gendisk *disk, int partno)  in delete_partition()  argument
243 	struct disk_part_tbl *ptbl = disk->part_tbl;  in delete_partition()
269 struct hd_struct *add_partition(struct gendisk *disk, int partno,  in add_partition()  argument
275 	struct device *ddev = disk_to_dev(disk);  in add_partition()
281 	err = disk_expand_part_tbl(disk, partno);  in add_partition()
284 	ptbl = disk->part_tbl;  in add_partition()
303 		queue_limit_alignment_offset(&disk->queue->limits, start);  in add_partition()
305 		queue_limit_discard_alignment(&disk->queue->limits, start);  in add_partition()
308 	p->policy = get_disk_ro(disk);  in add_partition()
311 		struct partition_meta_info *pinfo = alloc_part_info(disk);  in add_partition()
378 static bool disk_unlock_native_capacity(struct gendisk *disk)  in disk_unlock_native_capacity()  argument
380 	const struct block_device_operations *bdops = disk->fops;  in disk_unlock_native_capacity()
383 	    !(disk->flags & GENHD_FL_NATIVE_CAPACITY)) {  in disk_unlock_native_capacity()
385 		bdops->unlock_native_capacity(disk);  in disk_unlock_native_capacity()
386 		disk->flags |= GENHD_FL_NATIVE_CAPACITY;  in disk_unlock_native_capacity()
394 static int drop_partitions(struct gendisk *disk, struct block_device *bdev)  in drop_partitions()  argument
402 	res = invalidate_partition(disk, 0);  in drop_partitions()
406 	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);  in drop_partitions()
408 		delete_partition(disk, part->partno);  in drop_partitions()
414 int rescan_partitions(struct gendisk *disk, struct block_device *bdev)  in rescan_partitions()  argument
425 	res = drop_partitions(disk, bdev);  in rescan_partitions()
429 	if (disk->fops->revalidate_disk)  in rescan_partitions()
430 		disk->fops->revalidate_disk(disk);  in rescan_partitions()
431 	check_disk_size_change(disk, bdev);  in rescan_partitions()
433 	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))  in rescan_partitions()
443 			       disk->disk_name);  in rescan_partitions()
444 			if (disk_unlock_native_capacity(disk))  in rescan_partitions()
457 		       disk->disk_name);  in rescan_partitions()
458 		if (disk_unlock_native_capacity(disk))  in rescan_partitions()
463 	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);  in rescan_partitions()
473 	disk_expand_part_tbl(disk, highest);  in rescan_partitions()
485 		if (from >= get_capacity(disk)) {  in rescan_partitions()
488 			       disk->disk_name, p, (unsigned long long) from);  in rescan_partitions()
489 			if (disk_unlock_native_capacity(disk))  in rescan_partitions()
494 		if (from + size > get_capacity(disk)) {  in rescan_partitions()
497 			       disk->disk_name, p, (unsigned long long) size);  in rescan_partitions()
499 			if (disk_unlock_native_capacity(disk)) {  in rescan_partitions()
509 				size = get_capacity(disk) - from;  in rescan_partitions()
515 		part = add_partition(disk, p, from, size,  in rescan_partitions()
520 			       disk->disk_name, p, -PTR_ERR(part));  in rescan_partitions()
532 int invalidate_partitions(struct gendisk *disk, struct block_device *bdev)  in invalidate_partitions()  argument
539 	res = drop_partitions(disk, bdev);  in invalidate_partitions()
543 	set_capacity(disk, 0);  in invalidate_partitions()
544 	check_disk_size_change(disk, bdev);  in invalidate_partitions()
547 	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);  in invalidate_partitions()