[PATCH] reference rt-mutex-design in rtmutex.c

[Steven Rostedt <rostedt@goodmis.org>]

In order to prevent Doc Rot, this patch adds a reference to the design
document for rtmutex.c in rtmutex.c.  So when someone needs to update or
change the design of that file they will know that a document actually
exists that explains the design (helping them change it), as well as
letting them know that they need to update it if it becomes out of date.

-- Steve

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

Index: linux-2.6.18-rc2/kernel/rtmutex.c
===================================================================
--- linux-2.6.18-rc2.orig/kernel/rtmutex.c	2006-07-21 09:38:08.000000000 -0400
+++ linux-2.6.18-rc2/kernel/rtmutex.c	2006-07-21 09:36:05.000000000 -0400
@@ -7,6 +7,9 @@
  *  Copyright (C) 2005-2006 Timesys Corp., Thomas Gleixner <tglx@timesys.com>
  *  Copyright (C) 2005 Kihon Technologies Inc., Steven Rostedt
  *  Copyright (C) 2006 Esben Nielsen
+ *
+ *  Before making any design changes to this file, please refer to
+ *  Documentation/rt-mutex-design.txt and update accordingly.
  */
 #include <linux/spinlock.h>
 #include <linux/module.h>
-
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