From 16fdb0146a9c17f1b387b08ba0fcf4c37ef35ba1 Mon Sep 17 00:00:00 2001
From: kmacy <kmacy@FreeBSD.org>
Date: Fri, 30 Apr 2010 21:21:21 +0000
Subject: [PATCH] don't call vm_pageout_flush with the page queue mutex held

Reported by: Michael Butler
---
 sys/vm/vm_object.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
index 47ef97371512..7e1cc2216ca7 100644
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -1058,7 +1058,9 @@ vm_object_page_collect_flush(vm_object_t object, vm_page_t p, int curgeneration,
 	}
 	runlen = maxb + maxf + 1;
 
+	vm_page_unlock_queues();
 	vm_pageout_flush(ma, runlen, pagerflags);
+	vm_page_lock_queues();
 	for (i = 0; i < runlen; i++) {
 		if (ma[i]->dirty) {
 			vm_page_unlock_queues();