From patchwork Sat Feb 8 19:34:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11371831 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 6788D14E3 for ; Sat, 8 Feb 2020 19:35:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5128624125 for ; Sat, 8 Feb 2020 19:35:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727573AbgBHTeu (ORCPT ); Sat, 8 Feb 2020 14:34:50 -0500 Received: from mga02.intel.com ([134.134.136.20]:29572 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727555AbgBHTeu (ORCPT ); Sat, 8 Feb 2020 14:34:50 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Feb 2020 11:34:50 -0800 X-IronPort-AV: E=Sophos;i="5.70,418,1574150400"; d="scan'208";a="226810223" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.157]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Feb 2020 11:34:49 -0800 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org Cc: Ira Weiny , Alexander Viro , "Darrick J. Wong" , Dan Williams , Dave Chinner , Christoph Hellwig , "Theodore Y. Ts'o" , Jan Kara , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v3 03/12] fs/xfs: Separate functionality of xfs_inode_supports_dax() Date: Sat, 8 Feb 2020 11:34:36 -0800 Message-Id: <20200208193445.27421-4-ira.weiny@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200208193445.27421-1-ira.weiny@intel.com> References: <20200208193445.27421-1-ira.weiny@intel.com> MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Ira Weiny xfs_inode_supports_dax() should reflect if the inode can support DAX not that it is enabled for DAX. Leave that to other helper functions. Change the caller of xfs_inode_supports_dax() to call xfs_inode_use_dax() which reflects new logic to override the effective DAX flag with either the mount option or the physical DAX flag. To make the logic clear create 2 helper functions for the mount and physical flag. Signed-off-by: Ira Weiny --- fs/xfs/xfs_iops.c | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 81f2f93caec0..a7db50d923d4 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -1236,6 +1236,15 @@ static const struct inode_operations xfs_inline_symlink_inode_operations = { .update_time = xfs_vn_update_time, }; +static bool +xfs_inode_mount_is_dax( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + + return (mp->m_flags & XFS_MOUNT_DAX) == XFS_MOUNT_DAX; +} + /* Figure out if this file actually supports DAX. */ static bool xfs_inode_supports_dax( @@ -1247,11 +1256,6 @@ xfs_inode_supports_dax( if (!S_ISREG(VFS_I(ip)->i_mode) || xfs_is_reflink_inode(ip)) return false; - /* DAX mount option or DAX iflag must be set. */ - if (!(mp->m_flags & XFS_MOUNT_DAX) && - !(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX)) - return false; - /* Block size must match page size */ if (mp->m_sb.sb_blocksize != PAGE_SIZE) return false; @@ -1260,6 +1264,22 @@ xfs_inode_supports_dax( return xfs_inode_buftarg(ip)->bt_daxdev != NULL; } +static bool +xfs_inode_is_dax( + struct xfs_inode *ip) +{ + return (ip->i_d.di_flags2 & XFS_DIFLAG2_DAX) == XFS_DIFLAG2_DAX; +} + +static bool +xfs_inode_use_dax( + struct xfs_inode *ip) +{ + return xfs_inode_supports_dax(ip) && + (xfs_inode_mount_is_dax(ip) || + xfs_inode_is_dax(ip)); +} + STATIC void xfs_diflags_to_iflags( struct inode *inode, @@ -1278,7 +1298,7 @@ xfs_diflags_to_iflags( inode->i_flags |= S_SYNC; if (flags & XFS_DIFLAG_NOATIME) inode->i_flags |= S_NOATIME; - if (xfs_inode_supports_dax(ip)) + if (xfs_inode_use_dax(ip)) inode->i_flags |= S_DAX; }