diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 27d37e7712da65..bb14738df35875 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -90,5 +90,6 @@ Documentation for filesystem implementations.
    sysfs
    sysv-fs
    tmpfs
+   ubifs-authentication.rst
    virtiofs
    vfat
diff --git a/Documentation/filesystems/ubifs-authentication.rst b/Documentation/filesystems/ubifs-authentication.rst
index 6a9584f6ff4677..16efd729bf7c97 100644
--- a/Documentation/filesystems/ubifs-authentication.rst
+++ b/Documentation/filesystems/ubifs-authentication.rst
@@ -1,3 +1,5 @@
+.. SPDX-License-Identifier: GPL-2.0
+
 :orphan:
 
 .. UBIFS Authentication
@@ -92,11 +94,11 @@ UBIFS Index & Tree Node Cache
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Basic on-flash UBIFS entities are called *nodes*. UBIFS knows different types
-of nodes. Eg. data nodes (`struct ubifs_data_node`) which store chunks of file
-contents or inode nodes (`struct ubifs_ino_node`) which represent VFS inodes.
-Almost all types of nodes share a common header (`ubifs_ch`) containing basic
+of nodes. Eg. data nodes (``struct ubifs_data_node``) which store chunks of file
+contents or inode nodes (``struct ubifs_ino_node``) which represent VFS inodes.
+Almost all types of nodes share a common header (``ubifs_ch``) containing basic
 information like node type, node length, a sequence number, etc. (see
-`fs/ubifs/ubifs-media.h`in kernel source). Exceptions are entries of the LPT
+``fs/ubifs/ubifs-media.h`` in kernel source). Exceptions are entries of the LPT
 and some less important node types like padding nodes which are used to pad
 unusable content at the end of LEBs.