diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index b47c0fc..206485e 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -12,6 +12,9 @@
 struct nfs4_session;
 struct nfs_iostats;
 struct nlm_host;
+struct nfs4_sequence_args;
+struct nfs4_sequence_res;
+struct nfs_server;
 
 /*
  * The nfs_client identifies our client state to the server.
@@ -67,6 +70,11 @@
 	 */
 	char			cl_ipaddr[48];
 	unsigned char		cl_id_uniquifier;
+	int		     (* cl_call_sync)(struct nfs_server *server,
+					      struct rpc_message *msg,
+					      struct nfs4_sequence_args *args,
+					      struct nfs4_sequence_res *res,
+					      int cache_reply);
 #endif /* CONFIG_NFS_V4 */
 
 #ifdef CONFIG_NFS_V4_1