From owner-cvs-all@FreeBSD.ORG  Fri Jun 17 01:05:14 2005
Return-Path: <owner-cvs-all@FreeBSD.ORG>
X-Original-To: cvs-all@FreeBSD.org
Delivered-To: cvs-all@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 63B7C16A41C;
	Fri, 17 Jun 2005 01:05:14 +0000 (GMT)
	(envelope-from jeff@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5261A43D1F;
	Fri, 17 Jun 2005 01:05:14 +0000 (GMT)
	(envelope-from jeff@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j5H15EJi075283;
	Fri, 17 Jun 2005 01:05:14 GMT
	(envelope-from jeff@repoman.freebsd.org)
Received: (from jeff@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j5H15EhR075282;
	Fri, 17 Jun 2005 01:05:14 GMT (envelope-from jeff)
Message-Id: <200506170105.j5H15EhR075282@repoman.freebsd.org>
From: Jeff Roberson <jeff@FreeBSD.org>
Date: Fri, 17 Jun 2005 01:05:13 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/kern vfs_cache.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 17 Jun 2005 01:05:14 -0000

jeff        2005-06-17 01:05:13 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_cache.c 
  Log:
   - Fix a leaked reference to a vnode via v_dd.  We rely on cache_purge() and
     cache_zap() to clear the v_dd pointers when a directory vnode is forcibly
     discarded.  For this to work, all vnodes with v_dd pointers to a directory
     must also have name cache entries linked via v_cache_dst to that dvp
     otherwise we could not find them at cache_purge() time.  The following
     code snipit could break this guarantee by unlinking a directory before
     fetching it's dotdot.  The dotdot lookup would initialize the v_dd field
     of the unlinked directory which could never be cleared.  To fix this
     we don't initialize v_dd for orphaned vnodes.
          printf("rmdir: %d\n", rmdir("../foo")); /* foo is cwd */
          printf("chdir: %d\n", chdir(".."));
          printf("%s\n", getwd(NULL));
  
  Sponsored by:   Isilon Systems, Inc.
  Discovered by:  kkenn
  Approved by:    re (blanket vfs)
  
  Revision  Changes    Path
  1.103     +11 -1     src/sys/kern/vfs_cache.c