78 struct request {  struct
79 	struct request_queue *q;  argument
100 		struct request *rq_next;  argument
105 	/* Time that the first bio started allocating this request. */  argument
108 	/* Time that this request was allocated for this IO. */  argument
109 	u64 start_time_ns;
111 	u64 io_start_time_ns;
114 	unsigned short wbt_flags;
121 	unsigned short stats_sectors;
147 	 * request reaches the dispatch list. The ipi_list is only used  argument
158 	 * The rb_node is only used inside the io scheduler, requests  argument
163 	union {
191 static inline enum req_op req_op(const struct request *req)  in req_op()  argument