Return-Path: Received: from mail-yb0-f173.google.com ([209.85.213.173]:36630 "EHLO mail-yb0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754261AbcIXAs2 (ORCPT ); Fri, 23 Sep 2016 20:48:28 -0400 Received: by mail-yb0-f173.google.com with SMTP id u125so73484331ybg.3 for ; Fri, 23 Sep 2016 17:48:27 -0700 (PDT) Message-ID: <1474678106.29585.16.camel@redhat.com> Subject: Re: [PATCH v3 0/5] add CB_NOTIFY_LOCK support to knfsd From: Jeff Layton To: "J. Bruce Fields" Cc: trond.myklebust@primarydata.com, anna.schumaker@netapp.com, linux-nfs@vger.kernel.org Date: Fri, 23 Sep 2016 20:48:26 -0400 In-Reply-To: <20160923210500.GA9998@fieldses.org> References: <1474057707-31286-1-git-send-email-jlayton@redhat.com> <20160923210500.GA9998@fieldses.org> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org List-ID: On Fri, 2016-09-23 at 17:05 -0400, J. Bruce Fields wrote: > On Fri, Sep 16, 2016 at 04:28:22PM -0400, Jeff Layton wrote: > > > > v3: > > - add NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK in a separate patch > > > > v2: > > - small bugfixes > > > > Very minor update to the patchset I sent a week or so ago. The only real > > difference from the last is to move the addition of > > NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK to a separate patch. > > > > The basic idea is to just add support for CB_NOTIFY_LOCK callbacks, > > which just tell the client that it may want to retry a lock again > > once it becomes available. > > > > Tested in conjunction with the corresponding client-side patch > > series. > > What sort of test were you doing? > I did several: cthon (of course), the lockperf suite (which still takes quite a while to run). Mostly I just verified that I got callbacks when expected and that the client acted on them using wireshark. Some testing under more load would be great. > Have you checked with wireshark's CB_NOTIFY_LOCK support is complete? > Just recently fixed: https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commitdiff;h=1948f7bd7553f215dc2519a35dcd62e29e35a614 > > > > > > Jeff Layton (5): > > nfsd: plumb in a CB_NOTIFY_LOCK operation > > nfsd: have nfsd4_lock use blocking locks for v4.1+ locks > > nfsd: add a LRU list for blocked locks > > nfs: add a new NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK constant > > nfsd: set the MAY_NOTIFY_LOCK flag in OPEN replies > > > > fs/nfsd/netns.h | 1 + > > fs/nfsd/nfs4callback.c | 57 ++++++++++++ > > fs/nfsd/nfs4state.c | 232 ++++++++++++++++++++++++++++++++++++++++++---- > > fs/nfsd/state.h | 21 ++++- > > fs/nfsd/xdr4cb.h | 9 ++ > > include/uapi/linux/nfs4.h | 5 +- > > 6 files changed, 301 insertions(+), 24 deletions(-) > > > > -- > > 2.7.4 -- Jeff Layton