17 	 * Probe partition formats with tables at disk address 0
32 	 * disk address 0xdc0.  Since these may also have stale
287 	struct gendisk *disk = part_to_disk(part);  in hd_struct_free_work()  local
290 	 * Release the disk reference acquired in delete_partition here.  in hd_struct_free_work()
295 	put_device(disk_to_dev(disk));  in hd_struct_free_work()
306 	struct gendisk *disk = part_to_disk(part);  in hd_struct_free()  local
308 		rcu_dereference_protected(disk->part_tbl, 1);  in hd_struct_free()
324  * Must be called either with bd_mutex held, before a disk can be opened or
325  * after all disk users are gone.
329 	struct gendisk *disk = part_to_disk(part);  in delete_partition()  local
331 		rcu_dereference_protected(disk->part_tbl, 1);  in delete_partition()
336 	 *  we have to hold the disk device  in delete_partition()
338 	get_device(disk_to_dev(disk));  in delete_partition()
367  * Must be called either with bd_mutex held, before a disk can be opened or
368  * after all disk users are gone.
370 static struct hd_struct *add_partition(struct gendisk *disk, int partno,  in add_partition()  argument
376 	struct device *ddev = disk_to_dev(disk);  in add_partition()
386 	switch (disk->queue->limits.zoned) {  in add_partition()
389 			disk->disk_name);  in add_partition()
393 			disk->disk_name);  in add_partition()
394 		disk->queue->limits.zoned = BLK_ZONED_NONE;  in add_partition()
400 	err = disk_expand_part_tbl(disk, partno);  in add_partition()
403 	ptbl = rcu_dereference_protected(disk->part_tbl, 1);  in add_partition()
424 	p->policy = get_disk_ro(disk);  in add_partition()
429 		pinfo = kzalloc_node(sizeof(*pinfo), GFP_KERNEL, disk->node_id);  in add_partition()
482 	/* suppress uevent if the disk suppresses it */  in add_partition()
504 static bool partition_overlaps(struct gendisk *disk, sector_t start,  in partition_overlaps()  argument
511 	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);  in partition_overlaps()
618 static bool disk_unlock_native_capacity(struct gendisk *disk)  in disk_unlock_native_capacity()  argument
620 	const struct block_device_operations *bdops = disk->fops;  in disk_unlock_native_capacity()
623 	    !(disk->flags & GENHD_FL_NATIVE_CAPACITY)) {  in disk_unlock_native_capacity()
625 		bdops->unlock_native_capacity(disk);  in disk_unlock_native_capacity()
626 		disk->flags |= GENHD_FL_NATIVE_CAPACITY;  in disk_unlock_native_capacity()
657 static bool blk_add_partition(struct gendisk *disk, struct block_device *bdev,  in blk_add_partition()  argument
667 	if (from >= get_capacity(disk)) {  in blk_add_partition()
670 		       disk->disk_name, p, (unsigned long long) from);  in blk_add_partition()
671 		if (disk_unlock_native_capacity(disk))  in blk_add_partition()
676 	if (from + size > get_capacity(disk)) {  in blk_add_partition()
679 		       disk->disk_name, p, (unsigned long long) size);  in blk_add_partition()
681 		if (disk_unlock_native_capacity(disk))  in blk_add_partition()
687 		 * disk to avoid creating invalid block devices.  in blk_add_partition()
689 		size = get_capacity(disk) - from;  in blk_add_partition()
692 	part = add_partition(disk, p, from, size, state->parts[p].flags,  in blk_add_partition()
696 		       disk->disk_name, p, -PTR_ERR(part));  in blk_add_partition()
707 int blk_add_partitions(struct gendisk *disk, struct block_device *bdev)  in blk_add_partitions()  argument
712 	if (!disk_part_scan_enabled(disk))  in blk_add_partitions()
715 	state = check_partition(disk, bdev);  in blk_add_partitions()
725 			       disk->disk_name);  in blk_add_partitions()
726 			if (disk_unlock_native_capacity(disk))  in blk_add_partitions()
735 	if (disk->queue->limits.zoned == BLK_ZONED_HM) {  in blk_add_partitions()
737 			disk->disk_name);  in blk_add_partitions()
750 		       disk->disk_name);  in blk_add_partitions()
751 		if (disk_unlock_native_capacity(disk))  in blk_add_partitions()
756 	kobject_uevent(&disk_to_dev(disk)->kobj, KOBJ_CHANGE);  in blk_add_partitions()
759 	 * Detect the highest partition number and preallocate disk->part_tbl.  in blk_add_partitions()
765 	disk_expand_part_tbl(disk, highest);  in blk_add_partitions()
768 		if (!blk_add_partition(disk, bdev, state, p))  in blk_add_partitions()