NFSv4.1: Don't call nfs4_deviceid_purge_client() unless we're NFSv4.1

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 8563585..592b558 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -204,8 +204,11 @@
 #ifdef CONFIG_NFS_V4_1
 static void nfs4_shutdown_session(struct nfs_client *clp)
 {
-	if (nfs4_has_session(clp))
+	if (nfs4_has_session(clp)) {
+		nfs4_deviceid_purge_client(clp);
 		nfs4_destroy_session(clp->cl_session);
+	}
+
 }
 #else /* CONFIG_NFS_V4_1 */
 static void nfs4_shutdown_session(struct nfs_client *clp)
@@ -298,8 +301,6 @@
 	if (clp->cl_machine_cred != NULL)
 		put_rpccred(clp->cl_machine_cred);
 
-	nfs4_deviceid_purge_client(clp);
-
 	put_net(clp->net);
 	kfree(clp->cl_hostname);
 	kfree(clp->server_scope);
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 53d593a..8088d51 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -426,9 +426,6 @@
 	return 0;
 }
 
-static inline void nfs4_deviceid_purge_client(struct nfs_client *ncl)
-{
-}
 #endif /* CONFIG_NFS_V4_1 */
 
 #endif /* FS_NFS_PNFS_H */