[src/trunk]: src/tests/rump/kernspace vm object must be locked during page al...

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

details:   https://anonhg.NetBSD.org/src/rev/c669a8301107
branches:  trunk
changeset: 757628:c669a8301107
user:      pooka <pooka%NetBSD.org@localhost>
date:      Wed Sep 08 20:40:24 2010 +0000

description:
vm object must be locked during page allocation.

diffstat:

 tests/rump/kernspace/busypage.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 3400d6d19ed6 -r c669a8301107 tests/rump/kernspace/busypage.c
--- a/tests/rump/kernspace/busypage.c   Wed Sep 08 19:21:13 2010 +0000
+++ b/tests/rump/kernspace/busypage.c   Wed Sep 08 20:40:24 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: busypage.c,v 1.1 2010/05/31 23:32:51 pooka Exp $       */
+/*     $NetBSD: busypage.c,v 1.2 2010/09/08 20:40:24 pooka Exp $       */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
 
 #include <sys/cdefs.h>
 #if !defined(lint)
-__RCSID("$NetBSD: busypage.c,v 1.1 2010/05/31 23:32:51 pooka Exp $");
+__RCSID("$NetBSD: busypage.c,v 1.2 2010/09/08 20:40:24 pooka Exp $");
 #endif /* !lint */
 
 #include <sys/param.h>
@@ -69,7 +69,9 @@
        cv_init(&tcv, "napina");
 
        uobj = uao_create(1, 0);
+       mutex_enter(&uobj->vmobjlock);
        testpg = uvm_pagealloc(uobj, 0, NULL, 0);
+       mutex_exit(&uobj->vmobjlock);
        if (testpg == NULL)
                panic("couldn't create vm page");