From patchwork Tue Apr 7 18:29:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 1267565 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48xbZK67Wzz9sSw for ; Wed, 8 Apr 2020 04:30:49 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726910AbgDGSaf (ORCPT ); Tue, 7 Apr 2020 14:30:35 -0400 Received: from mga07.intel.com ([134.134.136.100]:13103 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726701AbgDGSae (ORCPT ); Tue, 7 Apr 2020 14:30:34 -0400 IronPort-SDR: 9V/u24v+XGk/EX7rBCTZ9M1DVSIvBJnPXSobd40UGxGDvVIlTgTOTN44q1m7kfdDc92//Tt/kd C0z6OCYGZ7uw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2020 11:30:29 -0700 IronPort-SDR: pIX3NWUkK88MU5yvjdKKwgZ21HeS8G8o7F+gVRB8itTFCBmwbqumvGb1eexC1dg7LT5Ladr2kt bYUQe9q0C7QQ== X-IronPort-AV: E=Sophos;i="5.72,356,1580803200"; d="scan'208";a="251316765" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2020 11:30:29 -0700 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org Cc: Ira Weiny , "Darrick J. Wong" , Dan Williams , Dave Chinner , Christoph Hellwig , "Theodore Y. Ts'o" , Jan Kara , Jeff Moyer , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH V6 5/8] fs/xfs: Create function xfs_inode_enable_dax() Date: Tue, 7 Apr 2020 11:29:55 -0700 Message-Id: <20200407182958.568475-6-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200407182958.568475-1-ira.weiny@intel.com> References: <20200407182958.568475-1-ira.weiny@intel.com> MIME-Version: 1.0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@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 v5: Update to reflect the new tri-state mount option 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 | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 1ec4a36917bd..e07f7b641226 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 (xfs_mount_dax_mode(mp) != XFS_DAX_ALWAYS && - !(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 +1259,19 @@ xfs_inode_supports_dax( return xfs_inode_buftarg(ip)->bt_daxdev != NULL; } +STATIC bool +xfs_inode_enable_dax( + struct xfs_inode *ip) +{ + u32 dax_mode = xfs_mount_dax_mode(ip->i_mount); + + if (dax_mode == XFS_DAX_NEVER || !xfs_inode_supports_dax(ip)) + return false; + if (dax_mode == XFS_DAX_ALWAYS || ip->i_d.di_flags2 & XFS_DIFLAG2_DAX) + return true; + return false; +} + STATIC void xfs_diflags_to_iflags( struct inode *inode, @@ -1278,7 +1290,7 @@ 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; }