62 	struct hd_struct *part = NULL;  in disk_get_part()  local
72 		part = rcu_dereference(ptbl->part[partno]);  in disk_get_part()
73 		if (part)  in disk_get_part()
74 			get_device(part_to_dev(part));  in disk_get_part()
79 	return part;  in disk_get_part()
103 	piter->part = NULL;  in disk_part_iter_init()
133 	disk_put_part(piter->part);  in disk_part_iter_next()
134 	piter->part = NULL;  in disk_part_iter_next()
155 		struct hd_struct *part;  in disk_part_iter_next()  local
157 		part = rcu_dereference(ptbl->part[piter->idx]);  in disk_part_iter_next()
158 		if (!part)  in disk_part_iter_next()
160 		if (!part_nr_sects_read(part) &&  in disk_part_iter_next()
166 		get_device(part_to_dev(part));  in disk_part_iter_next()
167 		piter->part = part;  in disk_part_iter_next()
174 	return piter->part;  in disk_part_iter_next()
189 	disk_put_part(piter->part);  in disk_part_iter_exit()
190 	piter->part = NULL;  in disk_part_iter_exit()
194 static inline int sector_in_part(struct hd_struct *part, sector_t sector)  in sector_in_part()  argument
196 	return part->start_sect <= sector &&  in sector_in_part()
197 		sector < part->start_sect + part_nr_sects_read(part);  in sector_in_part()
218 	struct hd_struct *part;  in disk_map_sector_rcu()  local
223 	part = rcu_dereference(ptbl->last_lookup);  in disk_map_sector_rcu()
224 	if (part && sector_in_part(part, sector))  in disk_map_sector_rcu()
225 		return part;  in disk_map_sector_rcu()
228 		part = rcu_dereference(ptbl->part[i]);  in disk_map_sector_rcu()
230 		if (part && sector_in_part(part, sector)) {  in disk_map_sector_rcu()
231 			rcu_assign_pointer(ptbl->last_lookup, part);  in disk_map_sector_rcu()
232 			return part;  in disk_map_sector_rcu()
411 int blk_alloc_devt(struct hd_struct *part, dev_t *devt)  in blk_alloc_devt()  argument
413 	struct gendisk *disk = part_to_disk(part);  in blk_alloc_devt()
417 	if (part->partno < disk->minors) {  in blk_alloc_devt()
418 		*devt = MKDEV(disk->major, disk->first_minor + part->partno);  in blk_alloc_devt()
426 	idx = idr_alloc(&ext_devt_idr, part, 0, NR_EXT_DEVT, GFP_NOWAIT);  in blk_alloc_devt()
512 	struct hd_struct *part;  in register_disk()  local
568 	while ((part = disk_part_iter_next(&piter)))  in register_disk()
569 		kobject_uevent(&part_to_dev(part)->kobj, KOBJ_ADD);  in register_disk()
638 	struct hd_struct *part;  in del_gendisk()  local
645 	while ((part = disk_part_iter_next(&piter))) {  in del_gendisk()
646 		invalidate_partition(disk, part->partno);  in del_gendisk()
647 		delete_partition(disk, part->partno);  in del_gendisk()
691 		struct hd_struct *part;  in get_gendisk()  local
694 		part = idr_find(&ext_devt_idr, blk_mangle_minor(MINOR(devt)));  in get_gendisk()
695 		if (part && get_disk(part_to_disk(part))) {  in get_gendisk()
696 			*partno = part->partno;  in get_gendisk()
697 			disk = part_to_disk(part);  in get_gendisk()
721 	struct hd_struct *part;  in bdget_disk()  local
724 	part = disk_get_part(disk, partno);  in bdget_disk()
725 	if (part)  in bdget_disk()
726 		bdev = bdget(part_devt(part));  in bdget_disk()
727 	disk_put_part(part);  in bdget_disk()
747 		struct hd_struct *part;  in printk_all_partitions()  local
765 		while ((part = disk_part_iter_next(&piter))) {  in printk_all_partitions()
766 			bool is_part0 = part == &disk->part0;  in printk_all_partitions()
769 			       bdevt_str(part_devt(part), devt_buf),  in printk_all_partitions()
770 			       (unsigned long long)part_nr_sects_read(part) >> 1  in printk_all_partitions()
771 			       , disk_name(disk, part->partno, name_buf),  in printk_all_partitions()
772 			       part->info ? part->info->uuid : "");  in printk_all_partitions()
848 	struct hd_struct *part;  in show_partition()  local
860 	while ((part = disk_part_iter_next(&piter)))  in show_partition()
862 			   MAJOR(part_devt(part)), MINOR(part_devt(part)),  in show_partition()
863 			   (unsigned long long)part_nr_sects_read(part) >> 1,  in show_partition()
864 			   disk_name(sgp, part->partno, buf));  in show_partition()
1090 	size = sizeof(*new_ptbl) + target * sizeof(new_ptbl->part[0]);  in disk_expand_part_tbl()
1098 		rcu_assign_pointer(new_ptbl->part[i], old_ptbl->part[i]);  in disk_expand_part_tbl()
1227 		struct hd_struct *part;  in blk_lookup_devt()  local
1240 		part = disk_get_part(disk, partno);  in blk_lookup_devt()
1241 		if (part) {  in blk_lookup_devt()
1242 			devt = part_devt(part);  in blk_lookup_devt()
1243 			disk_put_part(part);  in blk_lookup_devt()
1246 		disk_put_part(part);  in blk_lookup_devt()
1275 		disk->part_tbl->part[0] = &disk->part0;  in alloc_disk_node()
1348 	struct hd_struct *part;  in set_disk_ro()  local
1356 	while ((part = disk_part_iter_next(&piter)))  in set_disk_ro()
1357 		part->policy = flag;  in set_disk_ro()