132 struct request {  struct
133 	struct request_queue *q;  argument
154 	 * request reaches the dispatch list. The ipi_list is only used  argument
165 	 * The rb_node is only used inside the io scheduler, requests  argument
178 	 * more they have to dynamically allocate it.  Flush requests are  argument
198 	/* Time that the first bio started allocating this request. */  argument
201 	/* Time that this request was allocated for this IO. */  argument
202 	u64 start_time_ns;
204 	u64 io_start_time_ns;
207 	unsigned short wbt_flags;
214 	unsigned short stats_sectors;
220 	unsigned short nr_phys_segments;
223 	unsigned short nr_integrity_segments;
226 	unsigned short write_hint;
227 	unsigned short ioprio;
229 	unsigned int extra_len;	/* length of alignment and padding */
231 	enum mq_rq_state state;
232 	refcount_t ref;
234 	unsigned int timeout;
235 	unsigned long deadline;
259 static inline bool blk_rq_is_scsi(struct request *rq)  in blk_rq_is_scsi()  argument