diff options
Diffstat (limited to 'include/linux/genhd.h')
-rw-r--r-- | include/linux/genhd.h | 40 |
1 files changed, 9 insertions, 31 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index cd23c80265b2..809aaa32d53c 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -19,12 +19,6 @@ #include <linux/blk_types.h> #include <asm/local.h> -#define dev_to_part(device) container_of((device), struct hd_struct, __dev) -#define part_to_dev(part) (&((part)->__dev)) - -#define dev_to_disk(device) (dev_to_part(device)->bdev->bd_disk) -#define disk_to_dev(disk) (part_to_dev((disk)->part0->bd_part)) - extern const struct device_type disk_type; extern struct device_type part_type; extern struct class block_class; @@ -51,11 +45,6 @@ struct partition_meta_info { u8 volname[PARTITION_META_INFO_VOLNAMELTH]; }; -struct hd_struct { - struct block_device *bdev; - struct device __dev; -}; - /** * DOC: genhd capability flags * @@ -190,19 +179,21 @@ struct gendisk { struct lockdep_map lockdep_map; }; +/* + * The gendisk is refcounted by the part0 block_device, and the bd_device + * therein is also used for device model presentation in sysfs. + */ +#define dev_to_disk(device) \ + (dev_to_bdev(device)->bd_disk) +#define disk_to_dev(disk) \ + (&((disk)->part0->bd_device)) + #if IS_REACHABLE(CONFIG_CDROM) #define disk_to_cdi(disk) ((disk)->cdi) #else #define disk_to_cdi(disk) NULL #endif -static inline struct gendisk *part_to_disk(struct hd_struct *part) -{ - if (unlikely(!part)) - return NULL; - return part->bdev->bd_disk; -} - static inline int disk_max_parts(struct gendisk *disk) { if (disk->flags & GENHD_FL_EXT_DEVT) @@ -221,19 +212,6 @@ static inline dev_t disk_devt(struct gendisk *disk) return MKDEV(disk->major, disk->first_minor); } -static inline dev_t part_devt(struct hd_struct *part) -{ - return part_to_dev(part)->devt; -} - -extern struct hd_struct *disk_get_part(struct gendisk *disk, int partno); - -static inline void disk_put_part(struct hd_struct *part) -{ - if (likely(part)) - put_device(part_to_dev(part)); -} - /* * Smarter partition iterator without context limits. */ |