From patchwork Thu Feb 27 21:11:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Simmons X-Patchwork-Id: 11410051 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25CC81580 for ; Thu, 27 Feb 2020 21:28:58 +0000 (UTC) Received: from pdx1-mailman02.dreamhost.com (pdx1-mailman02.dreamhost.com [64.90.62.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0EE6B246A3 for ; Thu, 27 Feb 2020 21:28:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0EE6B246A3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lustre-devel-bounces@lists.lustre.org Received: from pdx1-mailman02.dreamhost.com (localhost [IPv6:::1]) by pdx1-mailman02.dreamhost.com (Postfix) with ESMTP id 6AAA8348D79; Thu, 27 Feb 2020 13:25:06 -0800 (PST) X-Original-To: lustre-devel@lists.lustre.org Delivered-To: lustre-devel-lustre.org@pdx1-mailman02.dreamhost.com Received: from smtp3.ccs.ornl.gov (smtp3.ccs.ornl.gov [160.91.203.39]) by pdx1-mailman02.dreamhost.com (Postfix) with ESMTP id 5AFEE21FAE5 for ; Thu, 27 Feb 2020 13:19:27 -0800 (PST) Received: from star.ccs.ornl.gov (star.ccs.ornl.gov [160.91.202.134]) by smtp3.ccs.ornl.gov (Postfix) with ESMTP id F271D2C55; Thu, 27 Feb 2020 16:18:15 -0500 (EST) Received: by star.ccs.ornl.gov (Postfix, from userid 2004) id F0DC246C; Thu, 27 Feb 2020 16:18:15 -0500 (EST) From: James Simmons To: Andreas Dilger , Oleg Drokin , NeilBrown Date: Thu, 27 Feb 2020 16:11:35 -0500 Message-Id: <1582838290-17243-228-git-send-email-jsimmons@infradead.org> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> References: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> Subject: [lustre-devel] [PATCH 227/622] lustre: ldlm: don't convert wrong resource X-BeenThere: lustre-devel@lists.lustre.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "For discussing Lustre software development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mikhail Pershin , Lustre Development List MIME-Version: 1.0 Errors-To: lustre-devel-bounces@lists.lustre.org Sender: "lustre-devel" From: Mikhail Pershin During enqueue the returned lock may have different resource and local client lock replaces resource too. But there is a valid race with bl_ast and reply from server, so BL AST may come earlier and find client lock with old resource. In that case ldlm_handle_bl_callback() should proceed with normal cancel and don't use cancel_bits for lock convert. WC-bug-id: https://jira.whamcloud.com/browse/LU-11836 Lustre-commit: 2bc71659db69 ("LU-11836 ldlm: don't convert wrong resource") Signed-off-by: Mikhail Pershin Reviewed-on: https://review.whamcloud.com/34264 Reviewed-by: Andreas Dilger Reviewed-by: Oleg Drokin Signed-off-by: James Simmons --- fs/lustre/ldlm/ldlm_lockd.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/lustre/ldlm/ldlm_lockd.c b/fs/lustre/ldlm/ldlm_lockd.c index 6905ee5..2985e37 100644 --- a/fs/lustre/ldlm/ldlm_lockd.c +++ b/fs/lustre/ldlm/ldlm_lockd.c @@ -131,8 +131,14 @@ void ldlm_handle_bl_callback(struct ldlm_namespace *ns, * NOTE: ld can be NULL or can be not NULL but zeroed if * passed from ldlm_bl_thread_blwi(), check below used bits * in ld to make sure it is valid description. + * + * If server may replace lock resource keeping the same cookie, + * never use cancel bits from different resource, full cancel + * is to be used. */ - if (ld && ld->l_policy_data.l_inodebits.bits) + if (ld && ld->l_policy_data.l_inodebits.bits && + ldlm_res_eq(&ld->l_resource.lr_name, + &lock->l_resource->lr_name)) lock->l_policy_data.l_inodebits.cancel_bits = ld->l_policy_data.l_inodebits.cancel_bits; /* if there is no valid ld and lock is cbpending already