From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1441C433FE for ; Thu, 16 Sep 2021 16:35:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CA79961406 for ; Thu, 16 Sep 2021 16:35:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242310AbhIPQhT (ORCPT ); Thu, 16 Sep 2021 12:37:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:44760 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240887AbhIPQfT (ORCPT ); Thu, 16 Sep 2021 12:35:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DD6F461401; Thu, 16 Sep 2021 16:21:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631809279; bh=i7wc2uRKQVQ6nQLuaNp9hIehMq1xIm5c5aaokRAIFrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n7Wo5us/KWP7+bROay4B9098NxVgUq3NX0HK7rUzByY9oZT0g99Fax5EAM041mBg7 ouBt86nl9/NqTu09kTwy2wcHqP+6XxxiOIRmbIyjGjQa3x+rIvunXX9lNPbm1aPQSo ranlXBwkySH/5HN4iwVrUV1Yt0iONRxk9qr0sL4g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust , Anna Schumaker , Sasha Levin Subject: [PATCH 5.13 096/380] NFSv4/pnfs: The layout barrier indicate a minimal value for the seqid Date: Thu, 16 Sep 2021 17:57:33 +0200 Message-Id: <20210916155807.301331981@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210916155803.966362085@linuxfoundation.org> References: <20210916155803.966362085@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Trond Myklebust [ Upstream commit d6236a98b3bab07c0a1455fd1ab46f79c3978cdc ] The intention of the layout barrier is to ensure that we do not update the layout to match an older value than the current expectation. Fix the test in pnfs_layout_stateid_blocked() to reflect that it is legal for the seqid of the stateid to match that of the barrier. Fixes: aa95edf309ef ("NFSv4/pnfs: Fix the layout barrier update") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker Signed-off-by: Sasha Levin --- fs/nfs/pnfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 6cc5ae51fd80..28350d62b9bd 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1004,7 +1004,7 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo, { u32 seqid = be32_to_cpu(stateid->seqid); - return !pnfs_seqid_is_newer(seqid, lo->plh_barrier) && lo->plh_barrier; + return lo->plh_barrier && pnfs_seqid_is_newer(lo->plh_barrier, seqid); } /* lget is set to 1 if called from inside send_layoutget call chain */ -- 2.30.2