From patchwork Fri Feb 21 00:41:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11395151 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 9606A930 for ; Fri, 21 Feb 2020 00:42:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7DF8724650 for ; Fri, 21 Feb 2020 00:42:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729607AbgBUAln (ORCPT ); Thu, 20 Feb 2020 19:41:43 -0500 Received: from mga17.intel.com ([192.55.52.151]:38078 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729585AbgBUAlm (ORCPT ); Thu, 20 Feb 2020 19:41:42 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 16:41:42 -0800 X-IronPort-AV: E=Sophos;i="5.70,466,1574150400"; d="scan'208";a="436785042" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.157]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Feb 2020 16:41:42 -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 V4 06/13] fs/xfs: Create function xfs_inode_enable_dax() Date: Thu, 20 Feb 2020 16:41:27 -0800 Message-Id: <20200221004134.30599-7-ira.weiny@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200221004134.30599-1-ira.weiny@intel.com> References: <20200221004134.30599-1-ira.weiny@intel.com> MIME-Version: 1.0 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@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. Change the use of xfs_inode_supports_dax() to reflect only if the inode and underlying storage support dax. Add a new function xfs_inode_enable_dax() which reflects if the inode should be enabled for DAX. Signed-off-by: Ira Weiny --- Changes from v3: Update functions and names to be more clear Update commit message Merge with 'fs/xfs: Clean up DAX support check' don't allow IS_DAX() on a directory use STATIC macro for static make xfs_inode_supports_dax() static --- fs/xfs/xfs_iops.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 81f2f93caec0..ff711efc5247 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -1237,19 +1237,18 @@ static const struct inode_operations xfs_inline_symlink_inode_operations = { }; /* Figure out if this file actually supports DAX. */ -static bool +STATIC bool xfs_inode_supports_dax( struct xfs_inode *ip) { struct xfs_mount *mp = ip->i_mount; /* Only supported on non-reflinked files. */ - if (!S_ISREG(VFS_I(ip)->i_mode) || xfs_is_reflink_inode(ip)) + if (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)) + /* Only supported on regular files. */ + if (!S_ISREG(VFS_I(ip)->i_mode)) return false; /* Block size must match page size */ @@ -1260,6 +1259,20 @@ xfs_inode_supports_dax( return xfs_inode_buftarg(ip)->bt_daxdev != NULL; } +STATIC bool +xfs_inode_enable_dax( + struct xfs_inode *ip) +{ + if (!xfs_inode_supports_dax(ip)) + return false; + + if (ip->i_d.di_flags2 & XFS_DIFLAG2_DAX) + return true; + if (ip->i_mount->m_flags & XFS_MOUNT_DAX) + return true; + return false; +} + STATIC void xfs_diflags_to_iflags( struct inode *inode, @@ -1278,7 +1291,7 @@ 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_enable_dax(ip)) inode->i_flags |= S_DAX; }