blk_rq_prep_clone 1652 block/blk-core.c EXPORT_SYMBOL_GPL(blk_rq_prep_clone);
blk_rq_prep_clone  347 drivers/md/dm-rq.c 	r = blk_rq_prep_clone(clone, rq, &tio->md->bs, gfp_mask,
blk_rq_prep_clone  857 include/linux/blkdev.h extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,