unsigned int lnet_kiov_nob(unsigned int niov, struct bio_vec *iov);
int lnet_extract_kiov(int dst_niov, struct bio_vec *dst,
int src_niov, struct bio_vec *src,
unsigned int lnet_kiov_nob(unsigned int niov, struct bio_vec *iov);
int lnet_extract_kiov(int dst_niov, struct bio_vec *dst,
int src_niov, struct bio_vec *src,