From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757622Ab2INRBo (ORCPT ); Fri, 14 Sep 2012 13:01:44 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:32913 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752409Ab2INRBm convert rfc822-to-8bit (ORCPT ); Fri, 14 Sep 2012 13:01:42 -0400 References: <20120914140811.10835.81465.stgit@localhost.localdomain> In-Reply-To: <20120914140811.10835.81465.stgit@localhost.localdomain> Mime-Version: 1.0 (1.0) Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=us-ascii Message-Id: <4030B8F9-5C67-4AE7-826E-B4B6AD4FAD01@oracle.com> Cc: "Trond.Myklebust@netapp.com" , "bfields@fieldses.org" , "linux-nfs@vger.kernel.org" , "devel@openvz.org" , "linux-kernel@vger.kernel.org" , "jlayton@redhat.com" X-Mailer: iPhone Mail (9B206) From: Chuck Lever Subject: Re: [PATCH 0/3] lockd: use per-net refrence-counted NSM clients Date: Fri, 14 Sep 2012 13:01:21 -0400 To: Stanislav Kinsbursky X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org What happens if statd is restarted? Sent from my iPhone On Sep 14, 2012, at 10:25 AM, Stanislav Kinsbursky wrote: > This is a bug fix for https://bugzilla.redhat.com/show_bug.cgi?id=830862. > > The problem is that with NFSv4 mount in container (with separated mount > namesapce) and active lock on it, dying child reaped of this container will > try to umount NFS and doing this will try to create RPC client to send > unmonitor request to statd. > But creation of RCP client requires valid current->nsproxy (for operation with > utsname()) and during umount on child reaper exit it's equal to zero. > > Proposed solution is to introduce refrence-counter per-net NSM client, which > is created on fist monitor call and destroyed after the lst monitor call. > > The following series implements... > > --- > > Stanislav Kinsbursky (3): > lockd: use rpc client's cl_nodename for id encoding > lockd: per-net NSM client creation and destruction helpers introduced > lockd: create and use per-net NSM RPC clients on MON/UNMON requests > > > fs/lockd/mon.c | 91 +++++++++++++++++++++++++++++++++++++++++++----------- > fs/lockd/netns.h | 4 ++ > fs/lockd/svc.c | 1 + > 3 files changed, 77 insertions(+), 19 deletions(-) > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html