docs: Move binderfs to admin-guide

The documentation is more appropriate for the administrator than for
the internal kernel API section it is currently in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/filesystems/binderfs.rst b/Documentation/admin-guide/binderfs.rst
similarity index 100%
rename from Documentation/filesystems/binderfs.rst
rename to Documentation/admin-guide/binderfs.rst
diff --git a/Documentation/admin-guide/index.rst b/Documentation/admin-guide/index.rst
index 8001917..24fbe056 100644
--- a/Documentation/admin-guide/index.rst
+++ b/Documentation/admin-guide/index.rst
@@ -70,6 +70,7 @@
    ras
    bcache
    ext4
+   binderfs
    pm/index
    thunderbolt
    LSM/index
diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 1651173..2de2fe2 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -32,13 +32,3 @@
 
    journalling
    fscrypt
-
-Filesystem-specific documentation
-=================================
-
-Documentation for individual filesystem types can be found here.
-
-.. toctree::
-   :maxdepth: 2
-
-   binderfs