struct elevator_queue;
typedef struct elevator_queue elevator_t;
struct request_pm_state;
+struct blk_trace;
#define BLKDEV_MIN_RQ 4
#define BLKDEV_MAX_RQ 128 /* Default maximum */
unsigned int sg_reserved_size;
int node;
+ struct blk_trace *blk_trace;
+
/*
* reserved for flush operations
*/