Index: uspace/srv/fs/fat/fat_ops.c
===================================================================
--- uspace/srv/fs/fat/fat_ops.c	(revision 92bee46b90a19632adbe1c75c311212c2844284c)
+++ uspace/srv/fs/fat/fat_ops.c	(revision c888102b3975f7d642d88532956adbad188a3fad)
@@ -1117,4 +1117,14 @@
 }
 
+void fat_unmounted(ipc_callid_t rid, ipc_call_t *request)
+{
+	ipc_answer_0(rid, ENOTSUP);
+}
+
+void fat_unmount(ipc_callid_t rid, ipc_call_t *request)
+{
+	libfs_unmount(&fat_libfs_ops, rid, request);
+}
+
 void fat_lookup(ipc_callid_t rid, ipc_call_t *request)
 {