lfs_rf_valloc
int lfs_rf_valloc(struct lfs *, ino_t, int, struct lwp *, struct vnode **, union lfs_dinode *);
if ((error = lfs_rf_valloc(fs, ino, vers, l, &vp, NULL)) != 0)
error = lfs_rf_valloc(fs, ino, lfs_dino_getgen(fs, dip),