diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 89560be..89a795d 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -483,6 +483,12 @@
 				   struct nfs4_sequence_args *args,
 				   struct nfs4_sequence_res *res,
 				   int cache_reply);
+extern int nfs40_walk_client_list(struct nfs_client *clp,
+				struct nfs_client **result,
+				struct rpc_cred *cred);
+extern int nfs41_walk_client_list(struct nfs_client *clp,
+				struct nfs_client **result,
+				struct rpc_cred *cred);
 
 /*
  * Determine the device name as a string