Merge branch 'bpf-docs-rst-improvements'

Tobin C. Harding says:

====================
Recently BPF docs were converted to RST format. A couple of things were
missed:

 - Use 'index.rst' instead of 'README.rst'.  Although README.rst will
   work just fine it is more typical to keep the subdirectory indices
   in a file called 'index.rst'.

 - Integrate files Documentation/bpf/*.rst into build system using
   toctree in Documentation/bpf/index.rst

 - Include bpf/index in top level toctree so bpf is indexed in the main
   kernel docs.

 - Make anal change to heading format (inline with rest of Documentation/).
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

Documentation/bpf/README.rst → Documentation/bpf/index.rst

 =================
-BPF documentation
+BPF Documentation
 =================
 
 This directory contains documentation for the BPF (Berkeley Packet
@@ -22,14 +22,14 @@ Frequently asked questions (FAQ)
 
 Two sets of Questions and Answers (Q&A) are maintained.
 
-* QA for common questions about BPF see: bpf_design_QA_
+.. toctree::
+   :maxdepth: 1
 
-* QA for developers interacting with BPF subsystem: bpf_devel_QA_
+   bpf_design_QA
+   bpf_devel_QA
 
 
 .. Links:
-.. _bpf_design_QA: bpf_design_QA.rst
-.. _bpf_devel_QA:  bpf_devel_QA.rst
 .. _Documentation/networking/filter.txt: ../networking/filter.txt
 .. _man-pages: https://www.kernel.org/doc/man-pages/
 .. _bpf(2): http://man7.org/linux/man-pages/man2/bpf.2.html

Documentation/index.rst

@@ -90,6 +90,7 @@ needed).
    crypto/index
    filesystems/index
    vm/index
+   bpf/index
 
 Architecture-specific documentation
 -----------------------------------