From c19618dd7d68b731fbc460280ef97444d7480f50 Mon Sep 17 00:00:00 2001
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Sat, 9 Apr 2005 13:32:01 +0000
Subject: [PATCH] CDEV lock should be before 'system map' lock. Hardcode this
 order to help track down reported LOR.

LOR reported by:	Thierry Herbelot <thierry@herbelot.com>
LOR info:		http://sources.zabbadoz.net/freebsd/lor.html#080
---
 sys/kern/subr_witness.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/kern/subr_witness.c b/sys/kern/subr_witness.c
index 6b515b98abf..ae54d5ae193 100644
--- a/sys/kern/subr_witness.c
+++ b/sys/kern/subr_witness.c
@@ -330,6 +330,12 @@ static struct witness_order_list_entry order_lists[] = {
 	{ "nfsd_mtx", &lock_class_mtx_sleep },
 	{ "so_snd", &lock_class_mtx_sleep },
 	{ NULL, NULL },
+	/*
+	 * CDEV
+	 */
+	{ "cdev", &lock_class_mtx_sleep },
+	{ "system map", &lock_class_mtx_sleep },
+	{ NULL, NULL },
 	/*
 	 * spin locks
 	 */