[src/trunk]: src/sys/kern Update a comment.

[ad <ad%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0e42d20dd22b
branches:  trunk
changeset: 968650:0e42d20dd22b
user:      ad <ad%NetBSD.org@localhost>
date:      Thu Jan 23 12:35:23 2020 +0000

description:
Update a comment.

diffstat:

 sys/kern/kern_mutex.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r e2eb1aebcc9e -r 0e42d20dd22b sys/kern/kern_mutex.c
--- a/sys/kern/kern_mutex.c     Thu Jan 23 11:59:37 2020 +0000
+++ b/sys/kern/kern_mutex.c     Thu Jan 23 12:35:23 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_mutex.c,v 1.88 2020/01/07 13:44:23 ad Exp $       */
+/*     $NetBSD: kern_mutex.c,v 1.89 2020/01/23 12:35:23 ad Exp $       */
 
 /*-
  * Copyright (c) 2002, 2006, 2007, 2008, 2019 The NetBSD Foundation, Inc.
@@ -40,7 +40,7 @@
 #define        __MUTEX_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.88 2020/01/07 13:44:23 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_mutex.c,v 1.89 2020/01/23 12:35:23 ad Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -846,7 +846,8 @@
  * mutex_owner_running:
  *
  *     Return true if an adaptive mutex is unheld, or held and the owner is
- *     running on a CPU.  For the pagedaemon.
+ *     running on a CPU.  For the pagedaemon only - do not document or use
+ *     in other code.
  */
 bool
 mutex_owner_running(const kmutex_t *mtx)