diff --git a/fs/isofs/zisofs.h b/fs/isofs/zisofs.h
new file mode 100644
index 0000000..d78485d
--- /dev/null
+++ b/fs/isofs/zisofs.h
@@ -0,0 +1,21 @@
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2001 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,
+ *   USA; either version 2 of the License, or (at your option) any later
+ *   version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * Prototypes for functions exported from the compressed isofs subsystem
+ */
+
+#ifdef CONFIG_ZISOFS
+extern struct address_space_operations zisofs_aops;
+extern int __init zisofs_init(void);
+extern void zisofs_cleanup(void);
+#endif