62 struct scsi_disk {  struct
63 	struct scsi_driver *driver;	/* always &sd_template */
64 	struct scsi_device *device;
65 	struct device	dev;
66 	struct gendisk	*disk;
67 	atomic_t	openers;
68 	sector_t	capacity;	/* size in logical blocks */
69 	u32		max_xfer_blocks;
70 	u32		opt_xfer_blocks;
71 	u32		max_ws_blocks;
72 	u32		max_unmap_blocks;
73 	u32		unmap_granularity;
74 	u32		unmap_alignment;
98 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)  argument
100 static inline struct scsi_disk *scsi_disk(struct gendisk *disk)  in scsi_disk()  function