70 struct scsi_disk {  struct
71 	struct scsi_driver *driver;	/* always &sd_template */
72 	struct scsi_device *device;
73 	struct device	dev;
74 	struct gendisk	*disk;
75 	struct opal_dev *opal_dev;
77 	u32		nr_zones;
78 	u32		zone_blocks;
79 	u32		zone_shift;
80 	u32		zones_optimal_open;
81 	u32		zones_optimal_nonseq;
82 	u32		zones_max_open;
84 	atomic_t	openers;
85 	sector_t	capacity;	/* size in logical blocks */
86 	u32		max_xfer_blocks;
87 	u32		opt_xfer_blocks;
88 	u32		max_ws_blocks;
89 	u32		max_unmap_blocks;
90 	u32		unmap_granularity;
91 	u32		unmap_alignment;
92 	u32		index;
93 	unsigned int	physical_block_size;
94 	unsigned int	max_medium_access_timeouts;
95 	unsigned int	medium_access_timed_out;
96 	u8		media_present;
97 	u8		write_prot;
121 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)  argument
123 static inline struct scsi_disk *scsi_disk(struct gendisk *disk)  in scsi_disk()  function