102 struct request {  struct
103 	struct request_queue *q;  argument
124 		struct request *rq_next;  argument
129 	/* Time that the first bio started allocating this request. */  argument
132 	/* Time that this request was allocated for this IO. */  argument
133 	u64 start_time_ns;
135 	u64 io_start_time_ns;
138 	unsigned short wbt_flags;
166 	 * request reaches the dispatch list. The ipi_list is only used  argument
177 	 * The rb_node is only used inside the io scheduler, requests  argument
182 	union {
210 static inline enum req_op req_op(const struct request *req)  in req_op()  argument