From owner-svn-src-stable@freebsd.org  Fri Oct 27 08:53:11 2017
Return-Path: <owner-svn-src-stable@freebsd.org>
Delivered-To: svn-src-stable@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3A722E3C5B9;
 Fri, 27 Oct 2017 08:53:11 +0000 (UTC) (envelope-from kib@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a: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 01BA38141A;
 Fri, 27 Oct 2017 08:53:10 +0000 (UTC) (envelope-from kib@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v9R8rABr056416;
 Fri, 27 Oct 2017 08:53:10 GMT (envelope-from kib@FreeBSD.org)
Received: (from kib@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v9R8rAJa056415;
 Fri, 27 Oct 2017 08:53:10 GMT (envelope-from kib@FreeBSD.org)
Message-Id: <201710270853.v9R8rAJa056415@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org
 using -f
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Fri, 27 Oct 2017 08:53:10 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject: svn commit: r325033 - stable/11/sys/vm
X-SVN-Group: stable-11
X-SVN-Commit-Author: kib
X-SVN-Commit-Paths: stable/11/sys/vm
X-SVN-Commit-Revision: 325033
X-SVN-Commit-Repository: base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-stable@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: SVN commit messages for all the -stable branches of the src tree
 <svn-src-stable.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-stable>, 
 <mailto:svn-src-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable/>
List-Post: <mailto:svn-src-stable@freebsd.org>
List-Help: <mailto:svn-src-stable-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-stable>,
 <mailto:svn-src-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 27 Oct 2017 08:53:11 -0000

Author: kib
Date: Fri Oct 27 08:53:09 2017
New Revision: 325033
URL: https://svnweb.freebsd.org/changeset/base/325033

Log:
  MFC r324793:
  In vm_page_free_phys_pglist(), do not take vm_page_queue_free_mtx if
  there is nothing to do.

Modified:
  stable/11/sys/vm/vm_page.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/vm/vm_page.c
==============================================================================
--- stable/11/sys/vm/vm_page.c	Fri Oct 27 05:04:29 2017	(r325032)
+++ stable/11/sys/vm/vm_page.c	Fri Oct 27 08:53:09 2017	(r325033)
@@ -2848,6 +2848,8 @@ vm_page_free_phys_pglist(struct pglist *tq)
 {
 	vm_page_t m;
 
+	if (TAILQ_EMPTY(tq))
+		return;
 	mtx_lock(&vm_page_queue_free_mtx);
 	TAILQ_FOREACH(m, tq, listq)
 		vm_page_free_phys(m);