63 	struct hd_struct *part = NULL;  in disk_get_part()  local
73 		part = rcu_dereference(ptbl->part[partno]);  in disk_get_part()
74 		if (part)  in disk_get_part()
75 			get_device(part_to_dev(part));  in disk_get_part()
80 	return part;  in disk_get_part()
104 	piter->part = NULL;  in disk_part_iter_init()
134 	disk_put_part(piter->part);  in disk_part_iter_next()
135 	piter->part = NULL;  in disk_part_iter_next()
156 		struct hd_struct *part;  in disk_part_iter_next()  local
158 		part = rcu_dereference(ptbl->part[piter->idx]);  in disk_part_iter_next()
159 		if (!part)  in disk_part_iter_next()
161 		if (!part_nr_sects_read(part) &&  in disk_part_iter_next()
167 		get_device(part_to_dev(part));  in disk_part_iter_next()
168 		piter->part = part;  in disk_part_iter_next()
175 	return piter->part;  in disk_part_iter_next()
190 	disk_put_part(piter->part);  in disk_part_iter_exit()
191 	piter->part = NULL;  in disk_part_iter_exit()
195 static inline int sector_in_part(struct hd_struct *part, sector_t sector)  in sector_in_part()  argument
197 	return part->start_sect <= sector &&  in sector_in_part()
198 		sector < part->start_sect + part_nr_sects_read(part);  in sector_in_part()
219 	struct hd_struct *part;  in disk_map_sector_rcu()  local
224 	part = rcu_dereference(ptbl->last_lookup);  in disk_map_sector_rcu()
225 	if (part && sector_in_part(part, sector))  in disk_map_sector_rcu()
226 		return part;  in disk_map_sector_rcu()
229 		part = rcu_dereference(ptbl->part[i]);  in disk_map_sector_rcu()
231 		if (part && sector_in_part(part, sector)) {  in disk_map_sector_rcu()
232 			rcu_assign_pointer(ptbl->last_lookup, part);  in disk_map_sector_rcu()
233 			return part;  in disk_map_sector_rcu()
412 int blk_alloc_devt(struct hd_struct *part, dev_t *devt)  in blk_alloc_devt()  argument
414 	struct gendisk *disk = part_to_disk(part);  in blk_alloc_devt()
418 	if (part->partno < disk->minors) {  in blk_alloc_devt()
419 		*devt = MKDEV(disk->major, disk->first_minor + part->partno);  in blk_alloc_devt()
427 	idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_NOWAIT);  in blk_alloc_devt()
513 	struct hd_struct *part;  in register_disk()  local
569 	while ((part = disk_part_iter_next(&piter)))  in register_disk()
570 		kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD);  in register_disk()
640 	struct hd_struct *part;  in del_gendisk()  local
648 	while ((part = disk_part_iter_next(&piter))) {  in del_gendisk()
649 		invalidate_partition(disk, part->partno);  in del_gendisk()
650 		delete_partition(disk, part->partno);  in del_gendisk()
694 		struct hd_struct *part;  in get_gendisk()  local
697 		part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));  in get_gendisk()
698 		if (part && get_disk(part_to_disk(part))) {  in get_gendisk()
699 			*partno = part->partno;  in get_gendisk()
700 			disk = part_to_disk(part);  in get_gendisk()
724 	struct hd_struct *part;  in bdget_disk()  local
727 	part = disk_get_part(disk, partno);  in bdget_disk()
728 	if (part)  in bdget_disk()
729 		bdev = bdget(part_devt(part));  in bdget_disk()
730 	disk_put_part(part);  in bdget_disk()
750 		struct hd_struct *part;  in printk_all_partitions()  local
768 		while ((part = disk_part_iter_next(&piter))) {  in printk_all_partitions()
769 			bool is_part0 = part == &disk->part0;  in printk_all_partitions()
772 			       bdevt_str(part_devt(part), devt_buf),  in printk_all_partitions()
773 			       (unsigned long long)part_nr_sects_read(part) >> 1  in printk_all_partitions()
774 			       , disk_name(disk, part->partno, name_buf),  in printk_all_partitions()
775 			       part->info ? part->info->uuid : "");  in printk_all_partitions()
851 	struct hd_struct *part;  in show_partition()  local
863 	while ((part = disk_part_iter_next(&piter)))  in show_partition()
865 			   MAJOR(part_devt(part)), MINOR(part_devt(part)),  in show_partition()
866 			   (unsigned long long)part_nr_sects_read(part) >> 1,  in show_partition()
867 			   disk_name(sgp, part->partno, buf));  in show_partition()
1093 	size = sizeof(*new_ptbl) + target * sizeof(new_ptbl->part[0]);  in disk_expand_part_tbl()
1101 		rcu_assign_pointer(new_ptbl->part[i], old_ptbl->part[i]);  in disk_expand_part_tbl()
1229 		struct hd_struct *part;  in blk_lookup_devt()  local
1242 		part = disk_get_part(disk, partno);  in blk_lookup_devt()
1243 		if (part) {  in blk_lookup_devt()
1244 			devt = part_devt(part);  in blk_lookup_devt()
1245 			disk_put_part(part);  in blk_lookup_devt()
1248 		disk_put_part(part);  in blk_lookup_devt()
1277 		disk->part_tbl->part[0] = &disk->part0;  in alloc_disk_node()
1354 	struct hd_struct *part;  in set_disk_ro()  local
1362 	while ((part = disk_part_iter_next(&piter)))  in set_disk_ro()
1363 		part->policy = flag;  in set_disk_ro()