From owner-p4-projects@FreeBSD.ORG  Mon Sep  8 04:52:52 2014
Return-Path: <owner-p4-projects@FreeBSD.ORG>
Delivered-To: p4-projects@freebsd.org
Received: by hub.freebsd.org (Postfix, from userid 32767)
 id DCECB13F0; Mon,  8 Sep 2014 04:52:51 +0000 (UTC)
Delivered-To: perforce@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 420929F0
 for <perforce@freebsd.org>; Mon,  8 Sep 2014 04:51:22 +0000 (UTC)
Received: from skunkworks.freebsd.org (skunkworks.freebsd.org
 [IPv6:2001:1900:2254:2068::682:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 2ED891ED0
 for <perforce@freebsd.org>; Mon,  8 Sep 2014 04:51:22 +0000 (UTC)
Received: from skunkworks.freebsd.org ([127.0.1.74])
 by skunkworks.freebsd.org (8.14.9/8.14.9) with ESMTP id s884pM99027272
 for <perforce@freebsd.org>; Mon, 8 Sep 2014 04:51:22 GMT
 (envelope-from jhb@freebsd.org)
Received: (from perforce@localhost)
 by skunkworks.freebsd.org (8.14.9/8.14.9/Submit) id s884pMbt027269
 for perforce@freebsd.org; Mon, 8 Sep 2014 04:51:22 GMT
 (envelope-from jhb@freebsd.org)
Date: Mon, 8 Sep 2014 04:51:22 GMT
Message-Id: <201409080451.s884pMbt027269@skunkworks.freebsd.org>
X-Authentication-Warning: skunkworks.freebsd.org: perforce set sender to
 jhb@freebsd.org using -f
From: John Baldwin <jhb@FreeBSD.org>
Subject: PERFORCE change 1199532 for review
To: Perforce Change Reviews <perforce@FreeBSD.org>
Precedence: bulk
X-BeenThere: p4-projects@freebsd.org
X-Mailman-Version: 2.1.18-1
List-Id: p4 projects tree changes <p4-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/p4-projects>,
 <mailto:p4-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/p4-projects/>
List-Post: <mailto:p4-projects@freebsd.org>
List-Help: <mailto:p4-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/p4-projects>,
 <mailto:p4-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 08 Sep 2014 04:52:52 -0000

http://p4web.freebsd.org/@@1199532?ac=10

Change 1199532 by jhb@jhb_ralph on 2014/08/29 17:49:33

	Don't require MAP_SHARED or MAP_PRIVATE with MAP_ANON.
	Note that we can't simply for MAP_SHARED on for MAP_ANON
	as MAP_SHARED with MAP_ANON determines whether or not
	anon regions are shared with future children.

Affected files ...

.. //depot/projects/smpng/sys/vm/vm_mmap.c#106 edit

Differences ...

==== //depot/projects/smpng/sys/vm/vm_mmap.c#106 (text+ko) ====

@@ -248,13 +248,10 @@
 		return (EINVAL);
 	if ((prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_NONE)) != 0)
 		return (EINVAL);
-
-	/* Exactly one of MAP_SHARED or MAP_PRIVATE must be given. */
-	if ((flags & (MAP_SHARED | MAP_PRIVATE)) == 0 ||
+	if ((flags & (MAP_ANON | MAP_SHARED | MAP_PRIVATE)) == 0 ||
 	    (flags & (MAP_SHARED | MAP_PRIVATE)) == (MAP_SHARED | MAP_PRIVATE))
 		return (EINVAL);
 
-
 	/*
 	 * Align the file position to a page boundary,
 	 * and save its page offset component.