Index: uspace/lib/c/include/ipc/vfs.h
===================================================================
--- uspace/lib/c/include/ipc/vfs.h	(revision 818fffee39e7af9d4be402c0bbf35d4a06b82d6c)
+++ uspace/lib/c/include/ipc/vfs.h	(revision 1924bd430b10bc842d09d99ede55d445ffc680ca)
@@ -56,4 +56,5 @@
 	/** Unique identifier of the fs. */
 	char name[FS_NAME_MAXLEN + 1];
+	unsigned int instance;
 	bool concurrent_read_write;
 	bool write_retains_size;