bio_ctr          1618 block/blk-core.c 		      int (*bio_ctr)(struct bio *, struct bio *, void *),
bio_ctr          1631 block/blk-core.c 		if (bio_ctr && bio_ctr(bio, bio_src, data))
bio_ctr           859 include/linux/blkdev.h 			     int (*bio_ctr)(struct bio *, struct bio *, void *),