+
+extern void blkfree(struct inode *, daddr_t, off_t);
+extern void ifree(struct inode *, ino_t, int);
+extern void iput(struct inode *);
+extern void ilock(struct inode *);
+extern void iunlock(struct inode *);
+extern void dirbad(struct inode *, off_t, char *);
+