From patchwork Wed Dec 2 21:41:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11947219 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 9C4A013A0 for ; Wed, 2 Dec 2020 21:42:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D06022250 for ; Wed, 2 Dec 2020 21:42:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387666AbgLBVmc (ORCPT ); Wed, 2 Dec 2020 16:42:32 -0500 Received: from mga12.intel.com ([192.55.52.136]:34686 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726309AbgLBVmc (ORCPT ); Wed, 2 Dec 2020 16:42:32 -0500 IronPort-SDR: P1DQ244u4J5trZ2CW1gWIDMpwu4O1HBAn+N/OgCPi3vRqVc9Zp5fevr+bP5nMWMiGDsEhL9GkM hsR+2JuDLSKA== X-IronPort-AV: E=McAfee;i="6000,8403,9823"; a="152345748" X-IronPort-AV: E=Sophos;i="5.78,387,1599548400"; d="scan'208";a="152345748" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2020 13:41:51 -0800 IronPort-SDR: 2QJCNzsEBVMH4I8OWQapC/iFvj9Eh/m/3JafMG46DhRJMRcKQvjYVRsFPbIOB3nqwkskPxyKne XmGQxAZyPAnQ== X-IronPort-AV: E=Sophos;i="5.78,387,1599548400"; d="scan'208";a="550223437" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2020 13:41:50 -0800 From: ira.weiny@intel.com To: fstests@vger.kernel.org, Christoph Hellwig , Eric Sandeen Cc: Ira Weiny , linux-kernel@vger.kernel.org, "Darrick J. Wong" , Dan Williams , Dave Chinner , "Theodore Y. Ts'o" , Jan Kara , Jeff Moyer , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, David Howells Subject: [PATCH] common/rc: Fix _check_s_dax() Date: Wed, 2 Dec 2020 13:41:45 -0800 Message-Id: <20201202214145.1563433-1-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org From: Ira Weiny There is a conflict with the user visible statx bits 'mount root' and 'dax'. The kernel is changing the dax bit to correct this conflict.[1] Adjust _check_s_dax() to use the new bit. Because DAX tests do not run on root mounts, STATX_ATTR_MOUNT_ROOT should always be 0, therefore we can allow either bit to indicate DAX and cover any kernel which may be running. [1] https://lore.kernel.org/lkml/3e28d2c7-fbe5-298a-13ba-dcd8fd504666@redhat.com/ Signed-off-by: Ira Weiny --- I went ahead and used Christoph's suggestion regarding using both bits. --- common/rc | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/common/rc b/common/rc index b5a504e0dcb4..322e682e5239 100644 --- a/common/rc +++ b/common/rc @@ -3221,11 +3221,24 @@ _check_s_dax() local exp_s_dax=$2 local attributes=$($XFS_IO_PROG -c 'statx -r' $target | awk '/stat.attributes / { print $3 }') - if [ $exp_s_dax -eq 0 ]; then - (( attributes & 0x2000 )) && echo "$target has unexpected S_DAX flag" - else - (( attributes & 0x2000 )) || echo "$target doesn't have expected S_DAX flag" - fi + + # The attribute bit value, STATX_ATTR_DAX (0x2000), conflicted with + # STATX_ATTR_MOUNT_ROOT. Therefore, STATX_ATTR_DAX was changed to + # 0x00200000. + # + # Because DAX tests do not run on root mounts, STATX_ATTR_MOUNT_ROOT + # should always be 0, therefore we can allow either bit to indicate DAX + # and cover any kernel which may be running. + + if [ $(( attributes & 0x00200000 )) -ne 0 ] || [ $(( attributes & 0x2000 )) -ne 0 ]; then + if [ $exp_s_dax -eq 0 ]; then + echo "$target has unexpected S_DAX flag" + fi + else + if [ $exp_s_dax -ne 0 ]; then + echo "$target doesn't have expected S_DAX flag" + fi + fi } _check_xflag()