diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 0e4e057..7c1ed01 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -53,6 +53,9 @@
 	cFYI(1, "CIFS VFS: leaving %s (xid = %d) rc = %d",	\
 	     __func__, curr_xid, (int)rc);			\
 } while (0)
+extern int init_cifs_idmap(void);
+extern void exit_cifs_idmap(void);
+extern void cifs_destroy_idmaptrees(void);
 extern char *build_path_from_dentry(struct dentry *);
 extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb,
 					struct cifsTconInfo *tcon);