83 struct request {  struct
84 	struct request_queue *q;  argument
105 		struct request *rq_next;  argument
110 	/* Time that the first bio started allocating this request. */  argument
113 	/* Time that this request was allocated for this IO. */  argument
114 	u64 start_time_ns;
116 	u64 io_start_time_ns;
119 	unsigned short wbt_flags;
126 	unsigned short stats_sectors;
153 	 * request reaches the dispatch list. The ipi_list is only used  argument
164 	 * The rb_node is only used inside the io scheduler, requests  argument
177 	 * more they have to dynamically allocate it.  Flush requests are  argument
181 	union {
206 static inline enum req_op req_op(const struct request *req)  in req_op()  argument