docs: move ext4 administrative docs to admin-guide/

Move the ext4 mount option and other administrative stuff to the Linux
administrator's guide.

Signed-off-by: Darrick J. Wong <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
diff --git a/Documentation/filesystems/ext4/ext4.rst b/Documentation/admin-guide/ext4.rst
similarity index 99%
rename from Documentation/filesystems/ext4/ext4.rst
rename to Documentation/admin-guide/ext4.rst
index e2b6bb7..e506d3d 100644
--- a/Documentation/filesystems/ext4/ext4.rst
+++ b/Documentation/admin-guide/ext4.rst
@@ -1,7 +1,7 @@
 .. SPDX-License-Identifier: GPL-2.0
 
 ========================
-General Information
+ext4 General Information
 ========================
 
 Ext4 is an advanced level of the ext3 filesystem which incorporates
diff --git a/Documentation/admin-guide/index.rst b/Documentation/admin-guide/index.rst
index 0873685..965745d 100644
--- a/Documentation/admin-guide/index.rst
+++ b/Documentation/admin-guide/index.rst
@@ -71,6 +71,7 @@
    java
    ras
    bcache
+   ext4
    pm/index
    thunderbolt
    LSM/index
diff --git a/Documentation/conf.py b/Documentation/conf.py
index 05dad6b..4d32c01 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -383,6 +383,8 @@
      'The kernel development community', 'manual'),
     ('filesystems/index', 'filesystems.tex', 'Linux Filesystems API',
      'The kernel development community', 'manual'),
+    ('admin-guide/ext4', 'ext4-admin-guide.tex', 'ext4 Administration Guide',
+     'ext4 Community', 'manual'),
     ('filesystems/ext4/index', 'ext4.tex', 'ext4 Filesystem',
      'ext4 Filesystem Developers', 'manual'),
     ('gpu/index', 'gpu.tex', 'Linux GPU Driver Developer\'s Guide',
diff --git a/Documentation/filesystems/ext4/index.rst b/Documentation/filesystems/ext4/index.rst
index 7112160..427bc11 100644
--- a/Documentation/filesystems/ext4/index.rst
+++ b/Documentation/filesystems/ext4/index.rst
@@ -13,5 +13,4 @@
    :maxdepth: 5
    :numbered:
 
-   ext4
    ondisk/index