From 5637a5914382985bbd9e7d21e6966611eb3d8224 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Mon, 3 May 2010 19:19:58 +0000
Subject: [PATCH] Handle busy status of the page in a way expected for
 pager_getpage(). Flush requested page, unbusy other pages, do not clear
 m->busy.

Reviewed by:	alc
MFC after:	1 week
---
 sys/vm/phys_pager.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sys/vm/phys_pager.c b/sys/vm/phys_pager.c
index 42cdab3ebeca..97674e35cf7a 100644
--- a/sys/vm/phys_pager.c
+++ b/sys/vm/phys_pager.c
@@ -152,10 +152,10 @@ phys_pager_getpages(vm_object_t object, vm_page_t *m, int count, int reqpage)
 		KASSERT(m[i]->dirty == 0,
 		    ("phys_pager_getpages: dirty page %p", m[i]));
 		/* The requested page must remain busy, the others not. */
-		if (reqpage != i) {
-			m[i]->oflags &= ~VPO_BUSY;
-			m[i]->busy = 0;
-		}
+		if (i == reqpage)
+			vm_page_flash(m[i]);
+		else
+			vm_page_wakeup(m[i]);
 	}
 	return (VM_PAGER_OK);
 }