lfs_ifind
dp = lfs_ifind(sblock, inum, inoblock.space);
return (void *)lfs_ifind(sblock, inum, inoblock.space);
dip = lfs_ifind(fs, ino, bp);
union lfs_dinode *lfs_ifind(struct lfs *, ino_t, struct ubuf *);
union lfs_dinode *lfs_ifind(struct lfs *, ino_t, struct buf *);
dip = lfs_ifind(fs, ino, bp);