From e7e56b2889a88c437171a624530b57c08edf60c8 Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Sun, 6 Aug 2006 00:17:17 +0000
Subject: [PATCH] Eliminate the acquisition and release of the page queues lock
 around a call to vm_page_sleep_if_busy().

---
 sys/vm/vm_fault.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c
index b54f51c66628..b122c365146a 100644
--- a/sys/vm/vm_fault.c
+++ b/sys/vm/vm_fault.c
@@ -389,10 +389,8 @@ RetryFault:;
 				VM_OBJECT_LOCK(fs.object);
 				if (fs.m == vm_page_lookup(fs.object,
 				    fs.pindex)) {
-					vm_page_lock_queues();
-					if (!vm_page_sleep_if_busy(fs.m, TRUE,
-					    "vmpfw"))
-						vm_page_unlock_queues();
+					vm_page_sleep_if_busy(fs.m, TRUE,
+					    "vmpfw");
 				}
 				vm_object_pip_wakeup(fs.object);
 				VM_OBJECT_UNLOCK(fs.object);