docs: Update RCU cross-references as suggested in doc-guide

The RCU documentation contains old-style cross references which
do not follow the best practices outlined in doc-guide/sphinx.rst.
In addition, some of the cross references use URLs that should be replaced
by pathnames.

Update all of these cross references and adjust the surrounding words.

Summary of changes:

  - out-of-date plaintext file names (*.txt) -> *.rst
  - references by :ref: tags -> path names of *.rst
    * use relative paths to .rst files under the RCU/ subdirectory
    * use abs paths of Documentation/xxx for other .rst files
  - references by URL under https://www.kernel.org/ -> paths of *.rst
  - adjust surrounding words of some of updated references.

Note:
  The automarkup.py script interprets references via "*.txt" as if they
were via "*.rst", so the *.txt -> *.rst changes should be regarded as
cleanups rather than bug fixes.

Cc: rcu@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst
index a9fc774bc400..ca4692775ad4 100644
--- a/Documentation/RCU/rculist_nulls.rst
+++ b/Documentation/RCU/rculist_nulls.rst
@@ -8,7 +8,7 @@ This section describes how to use hlist_nulls to
 protect read-mostly linked lists and
 objects using SLAB_TYPESAFE_BY_RCU allocations.
 
-Please read the basics in Documentation/RCU/listRCU.rst
+Please read the basics in listRCU.rst.
 
 Using 'nulls'
 =============