static void blk_mq_poll_stats_start(struct request_queue *q);
static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb);
-/* Must be consisitent with function below */
-#define BLK_MQ_POLL_STATS_BKTS 16
static int blk_mq_poll_stats_bkt(const struct request *rq)
{
int ddir, bytes, bucket;