diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index fa1a055..0a109ec 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -334,6 +334,7 @@
 int nfs41_discover_server_trunking(struct nfs_client *clp,
 			struct nfs_client **, struct rpc_cred *);
 extern void nfs4_schedule_session_recovery(struct nfs4_session *, int);
+extern void nfs41_server_notify_target_slotid_update(struct nfs_client *clp);
 #else
 static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
 {