From owner-cvs-src@FreeBSD.ORG  Wed Sep 24 18:52:46 2008
Return-Path: <owner-cvs-src@FreeBSD.ORG>
Delivered-To: cvs-src@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 87D54106567E;
	Wed, 24 Sep 2008 18:52:46 +0000 (UTC) (envelope-from jhb@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 39D7D8FC13;
	Wed, 24 Sep 2008 18:52:46 +0000 (UTC) (envelope-from jhb@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id m8OIqkbV089052;
	Wed, 24 Sep 2008 18:52:46 GMT (envelope-from jhb@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id m8OIqkfW089041;
	Wed, 24 Sep 2008 18:52:46 GMT (envelope-from jhb@repoman.freebsd.org)
Message-Id: <200809241852.m8OIqkfW089041@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	jhb@repoman.freebsd.org using -f
From: John Baldwin <jhb@FreeBSD.org>
Date: Wed, 24 Sep 2008 18:51:33 +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 src/sys/nfsclient nfs_vnops.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 24 Sep 2008 18:52:46 -0000

jhb         2008-09-24 18:51:33 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_cache.c 
    sys/nfsclient        nfs_vnops.c 
  Log:
  SVN rev 183330 on 2008-09-24 18:51:33Z by jhb
  
  Part 1 of making shared lookups more resilient with respect to forced
  unmounts.  When we upgrade a vnode lock from shared to exclusive during
  a name cache lookup, fail the lookup with EBADF if the vnode is invalidated
  while we are waiting for the exclusive lock.
  
  Also, for correctness (though I'm not sure it can occur in practice),
  downgrade an exclusively locked vnode if it should be share locked.
  
  Tested by:      pho
  
  Revision  Changes    Path
  1.126     +18 -8     src/sys/kern/vfs_cache.c
  1.290     +4 -1      src/sys/nfsclient/nfs_vnops.c