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()
385 static bool disk_unlock_native_capacity(struct gendisk *disk)  in disk_unlock_native_capacity()  argument
387 	const struct block_device_operations *bdops = disk->fops;  in disk_unlock_native_capacity()
390 	    !(disk->flags & GENHD_FL_NATIVE_CAPACITY)) {  in disk_unlock_native_capacity()
392 		bdops->unlock_native_capacity(disk);  in disk_unlock_native_capacity()
393 		disk->flags |= GENHD_FL_NATIVE_CAPACITY;  in disk_unlock_native_capacity()
401 static int drop_partitions(struct gendisk *disk, struct block_device *bdev)  in drop_partitions()  argument
409 	res = invalidate_partition(disk, 0);  in drop_partitions()
413 	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);  in drop_partitions()
415 		delete_partition(disk, part->partno);  in drop_partitions()
421 int rescan_partitions(struct gendisk *disk, struct block_device *bdev)  in rescan_partitions()  argument
432 	res = drop_partitions(disk, bdev);  in rescan_partitions()
436 	if (disk->fops->revalidate_disk)  in rescan_partitions()
437 		disk->fops->revalidate_disk(disk);  in rescan_partitions()
438 	blk_integrity_revalidate(disk);  in rescan_partitions()
439 	check_disk_size_change(disk, bdev);  in rescan_partitions()
441 	if (!get_capacity(disk) || !(state = check_partition(disk, bdev)))  in rescan_partitions()
451 			       disk->disk_name);  in rescan_partitions()
452 			if (disk_unlock_native_capacity(disk))  in rescan_partitions()
465 		       disk->disk_name);  in rescan_partitions()
466 		if (disk_unlock_native_capacity(disk))  in rescan_partitions()
471 	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);  in rescan_partitions()
481 	disk_expand_part_tbl(disk, highest);  in rescan_partitions()
493 		if (from >= get_capacity(disk)) {  in rescan_partitions()
496 			       disk->disk_name, p, (unsigned long long) from);  in rescan_partitions()
497 			if (disk_unlock_native_capacity(disk))  in rescan_partitions()
502 		if (from + size > get_capacity(disk)) {  in rescan_partitions()
505 			       disk->disk_name, p, (unsigned long long) size);  in rescan_partitions()
507 			if (disk_unlock_native_capacity(disk)) {  in rescan_partitions()
517 				size = get_capacity(disk) - from;  in rescan_partitions()
523 		part = add_partition(disk, p, from, size,  in rescan_partitions()
528 			       disk->disk_name, p, -PTR_ERR(part));  in rescan_partitions()
540 int invalidate_partitions(struct gendisk *disk, struct block_device *bdev)  in invalidate_partitions()  argument
547 	res = drop_partitions(disk, bdev);  in invalidate_partitions()
551 	set_capacity(disk, 0);  in invalidate_partitions()
552 	check_disk_size_change(disk, bdev);  in invalidate_partitions()
555 	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);  in invalidate_partitions()