From patchwork Thu May 3 18:57:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 10378973 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 700AB60327 for ; Thu, 3 May 2018 18:58:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5594328B2A for ; Thu, 3 May 2018 18:58:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4A66428C68; Thu, 3 May 2018 18:58:21 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID 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 D011C28B2A for ; Thu, 3 May 2018 18:58:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751445AbeECS6T (ORCPT ); Thu, 3 May 2018 14:58:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:44786 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751349AbeECS6K (ORCPT ); Thu, 3 May 2018 14:58:10 -0400 Received: from tleilax.poochiereds.net (cpe-71-70-156-158.nc.res.rr.com [71.70.156.158]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 74E52217D2; Thu, 3 May 2018 18:58:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1525373889; bh=mTYfqdKI51wSO26sWq3JfnjFqoRvJHcpv8kbsyhIohg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=EXfdTbYGEXsjUviuzOmKGPHvrylf5MNCoI1u9m7meRfsNCBiDmrSJeO9fhbHp6G+0 7w71F6AB77jZZmf7mr8fzGBemwxFCoJC0eGwukCfga9sS0bMKV39HXdqwkPIkwKxXj lQSY4zINJ7TLQCsuNQcRFdbEoGdTVUkUgejEtWKg= From: Jeff Layton To: devel@lists.nfs-ganesha.org, ceph-devel@vger.kernel.org Subject: [nfs-ganesha RFC PATCH v2 08/13] SAL: add a way to check for grace period being enforced cluster-wide Date: Thu, 3 May 2018 14:57:58 -0400 Message-Id: <20180503185803.25417-9-jlayton@kernel.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180503185803.25417-1-jlayton@kernel.org> References: <20180503185803.25417-1-jlayton@kernel.org> Sender: ceph-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jeff Layton Add a new recovery backend operation to tell whether the grace period is being fully enforced. Singleton backends that don't define this operation will just have nfs_grace_enforcing() return true. Change-Id: I8020723238396efe0949f29e1906c58b0a5e26c9 Signed-off-by: Jeff Layton --- src/SAL/nfs4_recovery.c | 14 ++++++++++++++ src/include/sal_functions.h | 1 + 2 files changed, 15 insertions(+) diff --git a/src/SAL/nfs4_recovery.c b/src/SAL/nfs4_recovery.c index debc6cab1bdb..400d8b528d26 100644 --- a/src/SAL/nfs4_recovery.c +++ b/src/SAL/nfs4_recovery.c @@ -227,6 +227,20 @@ void nfs_maybe_start_grace(void) } } +/** + * @brief Are all hosts in cluster enforcing the grace period? + * + * Singleton servers always return true here since the only grace period that + * matters is the local one. Clustered backends should check to make sure that + * the whole cluster is in grace. + */ +bool nfs_grace_enforcing(void) +{ + if (recovery_backend->grace_enforcing) + return recovery_backend->grace_enforcing(); + return true; +} + void nfs_try_lift_grace(void) { bool in_grace = true; diff --git a/src/include/sal_functions.h b/src/include/sal_functions.h index ac01a6eba497..96a4eb40a50b 100644 --- a/src/include/sal_functions.h +++ b/src/include/sal_functions.h @@ -1027,6 +1027,7 @@ struct nfs4_recovery_backend { void (*maybe_start_grace)(void); bool (*try_lift_grace)(void); void (*set_enforcing)(void); + bool (*grace_enforcing)(void); }; void fs_backend_init(struct nfs4_recovery_backend **);