224  * disk_openers - returns how many openers are there for a disk
225  * @disk: disk to check
227  * This returns the number of openers for a disk.  Note that this value is only
228  * stable if disk->open_mutex is held.
233 static inline unsigned int disk_openers(struct gendisk *disk)  in disk_openers()  argument
235 	return atomic_read(&disk->part0->bd_openers);  in disk_openers()
239  * disk_has_partscan - return %true if partition scanning is enabled on a disk
240  * @disk: disk to check
242  * Returns %true if partitions scanning is enabled for @disk, or %false if
245 static inline bool disk_has_partscan(struct gendisk *disk)  in disk_has_partscan()  argument
247 	return !(disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN)) &&  in disk_has_partscan()
248 		!test_bit(GD_SUPPRESS_PART_SCAN, &disk->state);  in disk_has_partscan()
257 #define disk_to_dev(disk) \  argument
258 	(&((disk)->part0->bd_device))
261 #define disk_to_cdi(disk)	((disk)->cdi)  argument
263 #define disk_to_cdi(disk)	NULL  argument
266 static inline dev_t disk_devt(struct gendisk *disk)  in disk_devt()  argument
268 	return MKDEV(disk->major, disk->first_minor);  in disk_devt()
301 /* do disk/partitions IO accounting */
424 int blk_revalidate_disk_zones(struct gendisk *disk);
434  * and must include all sectors within the disk capacity (no sector holes
495 	struct gendisk		*disk;  member
586 	 * Records disk & queue state in current context, used in unfreeze
621 	QUEUE_FLAG_REGISTERED,		/* queue has been registered to a disk */
695 static inline unsigned int disk_nr_zones(struct gendisk *disk)  in disk_nr_zones()  argument
697 	return disk->nr_zones;  in disk_nr_zones()
701 static inline unsigned int disk_nr_zones(struct gendisk *disk)  in disk_nr_zones()  argument
711 static inline unsigned int disk_zone_no(struct gendisk *disk, sector_t sector)  in disk_zone_no()  argument
713 	if (!blk_queue_is_zoned(disk->queue))  in disk_zone_no()
715 	return sector >> ilog2(disk->queue->limits.chunk_sectors);  in disk_zone_no()
751 int __must_check add_disk_fwnode(struct device *parent, struct gendisk *disk,
754 int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
756 static inline int __must_check add_disk(struct gendisk *disk)  in add_disk()  argument
758 	return device_add_disk(NULL, disk, NULL);  in add_disk()
761 void invalidate_disk(struct gendisk *disk);
762 void set_disk_ro(struct gendisk *disk, bool read_only);
763 void disk_uevent(struct gendisk *disk, enum kobject_action action);
785 static inline bool get_disk_ro(struct gendisk *disk)  in get_disk_ro()  argument
787 	return bdev_test_flag(disk->part0, BD_READ_ONLY) ||  in get_disk_ro()
788 		test_bit(GD_READ_ONLY, &disk->state);  in get_disk_ro()
796 bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
797 void disk_force_media_change(struct gendisk *disk);
800 void add_disk_randomness(struct gendisk *disk) __latent_entropy;
801 void rand_initialize_disk(struct gendisk *disk);
818 static inline sector_t get_capacity(struct gendisk *disk)  in get_capacity()  argument
820 	return bdev_nr_sectors(disk->part0);  in get_capacity()
829 int bdev_disk_changed(struct gendisk *disk, bool invalidate);
831 void put_disk(struct gendisk *disk);
837  * @lim: queue limits to be used for this disk.
843  * Returns an ERR_PTR on error, else the allocated disk.
860 bool disk_check_media_change(struct gendisk *disk);
861 void set_capacity(struct gendisk *disk, sector_t size);
864 int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
865 void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
868 				      struct gendisk *disk)  in bd_link_disk_holder()  argument
873 					 struct gendisk *disk)  in bd_unlink_disk_holder()  argument
878 dev_t part_devt(struct gendisk *disk, u8 partno);
879 void inc_diskseq(struct gendisk *disk);
882 extern int blk_register_queue(struct gendisk *disk);
883 extern void blk_unregister_queue(struct gendisk *disk);
1008 disk_alloc_independent_access_ranges(struct gendisk *disk, int nr_ia_ranges);
1009 void disk_set_independent_access_ranges(struct gendisk *disk,
1015 void blk_mark_disk_dead(struct gendisk *disk);
1414 		struct gendisk *disk = bdev->bd_disk;  in bdev_zone_is_seq()  local
1418 		bitmap = rcu_dereference(disk->conv_zones_bitmap);  in bdev_zone_is_seq()
1420 			!test_bit(disk_zone_no(disk, sector), bitmap);  in bdev_zone_is_seq()
1526 	int (*open)(struct gendisk *disk, blk_mode_t mode);
1527 	void (*release)(struct gendisk *disk);
1532 	unsigned int (*check_events) (struct gendisk *disk,
1537 	void (*free_disk)(struct gendisk *disk);
1542 	char *(*devnode)(struct gendisk *disk, umode_t *mode);
1544 	int (*get_unique_id)(struct gendisk *disk, u8 id[16],
1554 	int (*alternative_gpt_sector)(struct gendisk *disk, sector_t *sector);
1658 bool disk_live(struct gendisk *disk);