Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-vc0-f173.google.com ([209.85.220.173]:48767 "EHLO mail-vc0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751310AbbB1PVu (ORCPT ); Sat, 28 Feb 2015 10:21:50 -0500 Received: by mail-vc0-f173.google.com with SMTP id hy4so8351910vcb.4 for ; Sat, 28 Feb 2015 07:21:50 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <1830.1424969974@warthog.procyon.org.uk> References: <1424964991.10136.8.camel@primarydata.com> <1411654543.3044.24.camel@leira.trondhjem.org> <28059.1411650278@warthog.procyon.org.uk> <6150.1424947519@warthog.procyon.org.uk> <1655.1424969471@warthog.procyon.org.uk> <1830.1424969974@warthog.procyon.org.uk> Date: Sat, 28 Feb 2015 10:21:50 -0500 Message-ID: Subject: Re: NMI/soft lockup in nfs_delegation_need_return() From: Trond Myklebust To: David Howells Cc: Linux NFS Mailing List , Steve Dickson Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: On Thu, Feb 26, 2015 at 11:59 AM, David Howells wrote: > David Howells wrote: > >> Trond Myklebust wrote: >> >> > This patch ensures that the superblock doesn't go ahead and disappear >> > underneath us while the state manager thread is returning delegations. >> >> It doesn't help. It seem likely that it would, though. The superblock is > > It doesn't seem likely, that is... > >> unlikely to disappear since there's an active tar running against it. > > David Hi David, Could you please retest using the patches that are currently in my 'devel' git branch? git pull git://git.linux-nfs.org/projects/trondmy/linux-nfs.git devel They fix up a number of minor issues with the delegation code, specifically ones that might cause a delegation to be removed prematurely. Thanks! Trond -- Trond Myklebust Linux NFS client maintainer, PrimaryData trond.myklebust@primarydata.com