zero_fill_bio_iter  539 block/bio.c    EXPORT_SYMBOL(zero_fill_bio_iter);
zero_fill_bio_iter  472 include/linux/bio.h void zero_fill_bio_iter(struct bio *bio, struct bvec_iter iter);
zero_fill_bio_iter  477 include/linux/bio.h 	zero_fill_bio_iter(bio, bio->bi_iter);