[PATCH 20/34] docs: filesystems: convert mandatory-locking.txt to ReST

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- Add a SPDX header;
- Adjust document title;
- Some whitespace fixes and new line breaks;
- Use notes markups;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
 Documentation/filesystems/index.rst           |  1 +
 Documentation/filesystems/locks.rst           |  2 +-
 ...tory-locking.txt => mandatory-locking.rst} | 25 ++++++++++++-------
 fs/locks.c                                    |  2 +-
 4 files changed, 19 insertions(+), 11 deletions(-)
 rename Documentation/filesystems/{mandatory-locking.txt => mandatory-locking.rst} (91%)

diff --git a/Documentation/filesystems/index.rst b/Documentation/filesystems/index.rst
index 40cdc4ce2ffc..32759666a0be 100644
--- a/Documentation/filesystems/index.rst
+++ b/Documentation/filesystems/index.rst
@@ -30,6 +30,7 @@ algorithms work.
    fiemap
    files
    locks
+   mandatory-locking
 
    automount-support
 
diff --git a/Documentation/filesystems/locks.rst b/Documentation/filesystems/locks.rst
index 10f67fb9ce07..c5ae858b1aac 100644
--- a/Documentation/filesystems/locks.rst
+++ b/Documentation/filesystems/locks.rst
@@ -58,7 +58,7 @@ fcntl(), with all the problems that implies.
 ---------------------------------------
 
 Mandatory locking, as described in
-'Documentation/filesystems/mandatory-locking.txt' was prior to this release a
+'Documentation/filesystems/mandatory-locking.rst' was prior to this release a
 general configuration option that was valid for all mounted filesystems.  This
 had a number of inherent dangers, not the least of which was the ability to
 freeze an NFS server by asking it to read a file for which a mandatory lock
diff --git a/Documentation/filesystems/mandatory-locking.txt b/Documentation/filesystems/mandatory-locking.rst
similarity index 91%
rename from Documentation/filesystems/mandatory-locking.txt
rename to Documentation/filesystems/mandatory-locking.rst
index a251ca33164a..9ce73544a8f0 100644
--- a/Documentation/filesystems/mandatory-locking.txt
+++ b/Documentation/filesystems/mandatory-locking.rst
@@ -1,8 +1,13 @@
-	Mandatory File Locking For The Linux Operating System
+.. SPDX-License-Identifier: GPL-2.0
+
+=====================================================
+Mandatory File Locking For The Linux Operating System
+=====================================================
 
 		Andy Walker <andy@xxxxxxxxxxxxxxxxxxx>
 
 			   15 April 1996
+
 		     (Updated September 2007)
 
 0. Why you should avoid mandatory locking
@@ -53,15 +58,17 @@ possible on existing user code. The scheme is based on marking individual files
 as candidates for mandatory locking, and using the existing fcntl()/lockf()
 interface for applying locks just as if they were normal, advisory locks.
 
-Note 1: In saying "file" in the paragraphs above I am actually not telling
-the whole truth. System V locking is based on fcntl(). The granularity of
-fcntl() is such that it allows the locking of byte ranges in files, in addition
-to entire files, so the mandatory locking rules also have byte level
-granularity.
+.. Note::
 
-Note 2: POSIX.1 does not specify any scheme for mandatory locking, despite
-borrowing the fcntl() locking scheme from System V. The mandatory locking
-scheme is defined by the System V Interface Definition (SVID) Version 3.
+   1. In saying "file" in the paragraphs above I am actually not telling
+      the whole truth. System V locking is based on fcntl(). The granularity of
+      fcntl() is such that it allows the locking of byte ranges in files, in
+      addition to entire files, so the mandatory locking rules also have byte
+      level granularity.
+
+   2. POSIX.1 does not specify any scheme for mandatory locking, despite
+      borrowing the fcntl() locking scheme from System V. The mandatory locking
+      scheme is defined by the System V Interface Definition (SVID) Version 3.
 
 2. Marking a file for mandatory locking
 ---------------------------------------
diff --git a/fs/locks.c b/fs/locks.c
index b8a31c1c4fff..1d4f4d5da704 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -61,7 +61,7 @@
  *
  *  Initial implementation of mandatory locks. SunOS turned out to be
  *  a rotten model, so I implemented the "obvious" semantics.
- *  See 'Documentation/filesystems/mandatory-locking.txt' for details.
+ *  See 'Documentation/filesystems/mandatory-locking.rst' for details.
  *  Andy Walker (andy@xxxxxxxxxxxxxxxxxxx), April 06, 1996.
  *
  *  Don't allow mandatory locks on mmap()'ed files. Added simple functions to
-- 
2.25.2





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