From patchwork Fri Sep 16 20:28:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 9336751 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3639B6089F for ; Fri, 16 Sep 2016 20:28:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 26B702A083 for ; Fri, 16 Sep 2016 20:28:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1BBBB2A090; Fri, 16 Sep 2016 20:28:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CCC3C2A083 for ; Fri, 16 Sep 2016 20:28:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965128AbcIPU2d (ORCPT ); Fri, 16 Sep 2016 16:28:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55714 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965082AbcIPU2c (ORCPT ); Fri, 16 Sep 2016 16:28:32 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1A71F15567; Fri, 16 Sep 2016 20:28:32 +0000 (UTC) Received: from tlielax.poochiereds.net (ovpn-116-71.rdu2.redhat.com [10.10.116.71]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u8GKSRfD004651; Fri, 16 Sep 2016 16:28:31 -0400 From: Jeff Layton To: bfields@fieldses.org Cc: trond.myklebust@primarydata.com, anna.schumaker@netapp.com, linux-nfs@vger.kernel.org Subject: [PATCH v3 5/5] nfsd: set the MAY_NOTIFY_LOCK flag in OPEN replies Date: Fri, 16 Sep 2016 16:28:27 -0400 Message-Id: <1474057707-31286-6-git-send-email-jlayton@redhat.com> In-Reply-To: <1474057707-31286-1-git-send-email-jlayton@redhat.com> References: <1474057707-31286-1-git-send-email-jlayton@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Fri, 16 Sep 2016 20:28:32 +0000 (UTC) Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If we are using v4.1+, then we can send notification when contended locks become free. Inform the client of that fact. Signed-off-by: Jeff Layton --- fs/nfsd/nfs4state.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 6c74d9a45163..4062f4fbfc6d 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4490,9 +4490,11 @@ out: * To finish the open response, we just need to set the rflags. */ open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX; - if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED) && - !nfsd4_has_session(&resp->cstate)) + if (nfsd4_has_session(&resp->cstate)) + open->op_rflags |= NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK; + else if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED)) open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM; + if (dp) nfs4_put_stid(&dp->dl_stid); if (stp)