From owner-svn-src-head@freebsd.org  Mon Jul 31 20:41:46 2017
Return-Path: <owner-svn-src-head@freebsd.org>
Delivered-To: svn-src-head@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 EBAFDDBD608;
 Mon, 31 Jul 2017 20:41:46 +0000 (UTC)
 (envelope-from mckusick@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 B86AD681EA;
 Mon, 31 Jul 2017 20:41:46 +0000 (UTC)
 (envelope-from mckusick@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v6VKfjUg031280;
 Mon, 31 Jul 2017 20:41:45 GMT (envelope-from mckusick@FreeBSD.org)
Received: (from mckusick@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v6VKfjw7031279;
 Mon, 31 Jul 2017 20:41:45 GMT (envelope-from mckusick@FreeBSD.org)
Message-Id: <201707312041.v6VKfjw7031279@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: mckusick set sender to
 mckusick@FreeBSD.org using -f
From: Kirk McKusick <mckusick@FreeBSD.org>
Date: Mon, 31 Jul 2017 20:41:45 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r321816 - head/sys/ufs/ffs
X-SVN-Group: head
X-SVN-Commit-Author: mckusick
X-SVN-Commit-Paths: head/sys/ufs/ffs
X-SVN-Commit-Revision: 321816
X-SVN-Commit-Repository: base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 31 Jul 2017 20:41:47 -0000

Author: mckusick
Date: Mon Jul 31 20:41:45 2017
New Revision: 321816
URL: https://svnweb.freebsd.org/changeset/base/321816

Log:
  Avoid reading a snapshot block when it is already in the cache.
  Update the use of the B_CACHE flag (since the May 1999 commit
  that made it the correct test here).
  
  Reported by: Andreas Longwitz <longwitz@incore.de>
  Reviewed by: kib
  Tested by: Peter Holm
  MFC after: 1 week

Modified:
  head/sys/ufs/ffs/ffs_snapshot.c

Modified: head/sys/ufs/ffs/ffs_snapshot.c
==============================================================================
--- head/sys/ufs/ffs/ffs_snapshot.c	Mon Jul 31 20:28:26 2017	(r321815)
+++ head/sys/ufs/ffs/ffs_snapshot.c	Mon Jul 31 20:41:45 2017	(r321816)
@@ -1394,7 +1394,7 @@ indiracct_ufs2(snapvp, cancelvp, level, blkno, lbn, rl
 	 */
 	bp = getblk(cancelvp, lbn, fs->fs_bsize, 0, 0, 0);
 	bp->b_blkno = fsbtodb(fs, blkno);
-	if ((bp->b_flags & (B_DONE | B_DELWRI)) == 0 &&
+	if ((bp->b_flags & B_CACHE) == 0 &&
 	    (error = readblock(cancelvp, bp, fragstoblks(fs, blkno)))) {
 		brelse(bp);
 		return (error);