docs: filesystems: convert btrfs.txt to ReST

Just trivial changes:

- Add a SPDX header;
- Add it to filesystems/index.rst.

While here, adjust document title, just to make it use the same
style of the other docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: David Sterba <dsterba@suse.com>
Link: https://lore.kernel.org/r/1ef76da4ac24a9a6f6187723554733c702ea19ae.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.rst
similarity index 96%
rename from Documentation/filesystems/btrfs.txt
rename to Documentation/filesystems/btrfs.rst
index f9dad22..d0904f6 100644 (file)
--- a/Documentation/filesystems/btrfs.txt
+++ b/Documentation/filesystems/btrfs.rst
@@ -1,3 +1,6 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=====
 BTRFS
 =====
 

diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index f74e6b2..dae862c 100644 (file)
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -54,6 +54,7 @@ Documentation for filesystem implementations.
    autofs-mount-control
    befs
    bfs
+   btrfs
    fuse
    overlayfs
    virtiofs