From patchwork Wed Apr 15 06:45:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11489929 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 458A9912 for ; Wed, 15 Apr 2020 06:47:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35D3620775 for ; Wed, 15 Apr 2020 06:47:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2635052AbgDOGrs (ORCPT ); Wed, 15 Apr 2020 02:47:48 -0400 Received: from mga01.intel.com ([192.55.52.88]:14277 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2634950AbgDOGpk (ORCPT ); Wed, 15 Apr 2020 02:45:40 -0400 IronPort-SDR: +MAQBkzTvp0oaSjFAhbiQ5OnAH1JKwqbnFK4kJO+GuQFmam1vDtSly0dMY/lMdnZ38R2i53Vp7 kT5cSH8TAxCw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2020 23:45:39 -0700 IronPort-SDR: A7i4o9IbrOUSWc681IRvz18LPos3fH52r3gyAhrwkMjSMiLeW7d7UcPZgohIdeCelOGUqrqQBU hKslnzUw/oKw== X-IronPort-AV: E=Sophos;i="5.72,386,1580803200"; d="scan'208";a="272467285" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2020 23:45:38 -0700 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org, "Darrick J. Wong" Cc: Ira Weiny , Jan Kara , Dan Williams , Dave Chinner , Christoph Hellwig , "Theodore Y. Ts'o" , Jeff Moyer , linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH V8 07/11] fs/xfs: Combine xfs_diflags_to_linux() and xfs_diflags_to_iflags() Date: Tue, 14 Apr 2020 23:45:19 -0700 Message-Id: <20200415064523.2244712-8-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200415064523.2244712-1-ira.weiny@intel.com> References: <20200415064523.2244712-1-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 The functionality in xfs_diflags_to_linux() and xfs_diflags_to_iflags() are nearly identical. The only difference is that *_to_linux() is called after inode setup and disallows changing the DAX flag. Combining them can be done with a flag which indicates if this is the initial setup to allow the DAX flag to be properly set only at init time. So remove xfs_diflags_to_linux() and call the modified xfs_diflags_to_iflags() directly. While we are here simplify xfs_diflags_to_iflags() to take struct xfs_inode and use xfs_ip2xflags() to ensure future diflags are included correctly. Reviewed-by: Darrick J. Wong Signed-off-by: Ira Weiny --- Changes from V7: Clarify with a comment the reason for leaving S_DAX out of the mask Changes from V6: Move unrelated hunk to previous patch. Change logic for better code generation. Changes from V5: The functions are no longer identical so we can only combine them rather than deleting one completely. This is reflected in the new init parameter. --- fs/xfs/xfs_inode.h | 1 + fs/xfs/xfs_ioctl.c | 33 +-------------------------------- fs/xfs/xfs_iops.c | 46 +++++++++++++++++++++++++++------------------- 3 files changed, 29 insertions(+), 51 deletions(-) diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 492e53992fa9..e76ed9ca17f7 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -466,6 +466,7 @@ int xfs_break_layouts(struct inode *inode, uint *iolock, /* from xfs_iops.c */ extern void xfs_setup_inode(struct xfs_inode *ip); extern void xfs_setup_iops(struct xfs_inode *ip); +extern void xfs_diflags_to_iflags(struct xfs_inode *ip, bool init); /* * When setting up a newly allocated inode, we need to call diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index d42de92cb283..c6cd92ef4a05 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -1100,37 +1100,6 @@ xfs_flags2diflags2( return di_flags2; } -STATIC void -xfs_diflags_to_linux( - struct xfs_inode *ip) -{ - struct inode *inode = VFS_I(ip); - unsigned int xflags = xfs_ip2xflags(ip); - - if (xflags & FS_XFLAG_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - else - inode->i_flags &= ~S_IMMUTABLE; - if (xflags & FS_XFLAG_APPEND) - inode->i_flags |= S_APPEND; - else - inode->i_flags &= ~S_APPEND; - if (xflags & FS_XFLAG_SYNC) - inode->i_flags |= S_SYNC; - else - inode->i_flags &= ~S_SYNC; - if (xflags & FS_XFLAG_NOATIME) - inode->i_flags |= S_NOATIME; - else - inode->i_flags &= ~S_NOATIME; -#if 0 /* disabled until the flag switching races are sorted out */ - if (xflags & FS_XFLAG_DAX) - inode->i_flags |= S_DAX; - else - inode->i_flags &= ~S_DAX; -#endif -} - static int xfs_ioctl_setattr_xflags( struct xfs_trans *tp, @@ -1168,7 +1137,7 @@ xfs_ioctl_setattr_xflags( ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags); ip->i_d.di_flags2 = di_flags2; - xfs_diflags_to_linux(ip); + xfs_diflags_to_iflags(ip, false); xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); XFS_STATS_INC(mp, xs_ig_attrchg); diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 2ecc2b2050ab..d0c83e0fbf46 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -1276,26 +1276,34 @@ xfs_inode_enable_dax( return false; } -STATIC void +void xfs_diflags_to_iflags( - struct inode *inode, - struct xfs_inode *ip) + struct xfs_inode *ip, + bool init) { - uint16_t flags = ip->i_d.di_flags; - - inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC | - S_NOATIME | S_DAX); - - if (flags & XFS_DIFLAG_IMMUTABLE) - inode->i_flags |= S_IMMUTABLE; - if (flags & XFS_DIFLAG_APPEND) - inode->i_flags |= S_APPEND; - if (flags & XFS_DIFLAG_SYNC) - inode->i_flags |= S_SYNC; - if (flags & XFS_DIFLAG_NOATIME) - inode->i_flags |= S_NOATIME; - if (xfs_inode_enable_dax(ip)) - inode->i_flags |= S_DAX; + struct inode *inode = VFS_I(ip); + unsigned int xflags = xfs_ip2xflags(ip); + unsigned int flags = 0; + + ASSERT(!(IS_DAX(inode) && init)); + + if (xflags & FS_XFLAG_IMMUTABLE) + flags |= S_IMMUTABLE; + if (xflags & FS_XFLAG_APPEND) + flags |= S_APPEND; + if (xflags & FS_XFLAG_SYNC) + flags |= S_SYNC; + if (xflags & FS_XFLAG_NOATIME) + flags |= S_NOATIME; + if (init && xfs_inode_enable_dax(ip)) + flags |= S_DAX; + + /* + * S_DAX can only be set during inode initialization and is never set by + * the VFS, so we cannot mask off S_DAX in i_flags. + */ + inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC | S_NOATIME); + inode->i_flags |= flags; } /* @@ -1324,7 +1332,7 @@ xfs_setup_inode( inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid); i_size_write(inode, ip->i_d.di_size); - xfs_diflags_to_iflags(inode, ip); + xfs_diflags_to_iflags(ip, true); if (S_ISDIR(inode->i_mode)) { /*