diff --git a/Documentation/index.rst b/Documentation/index.rst
index 0cd4c3901456..eb5db850c4ef 100644
--- a/Documentation/index.rst
+++ b/Documentation/index.rst
@@ -96,6 +96,7 @@ needed).
 
    driver-api/index
    core-api/index
+   locking/index
    accounting/index
    block/index
    cdrom/index
diff --git a/Documentation/locking/index.rst b/Documentation/locking/index.rst
index ef5da7fe9aac..626a463f7e42 100644
--- a/Documentation/locking/index.rst
+++ b/Documentation/locking/index.rst
@@ -1,4 +1,4 @@
-:orphan:
+.. SPDX-License-Identifier: GPL-2.0
 
 =======
 locking