prep_rq_fn        238 include/linux/blkdev.h typedef int (prep_rq_fn) (struct request_queue *, struct request *);
prep_rq_fn        328 include/linux/blkdev.h 	prep_rq_fn		*prep_rq_fn;
prep_rq_fn       1034 include/linux/blkdev.h extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);