From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEFC5C433DF for ; Thu, 28 May 2020 15:00:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D563A2075F for ; Thu, 28 May 2020 15:00:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404039AbgE1PAV (ORCPT ); Thu, 28 May 2020 11:00:21 -0400 Received: from mga09.intel.com ([134.134.136.24]:7520 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404022AbgE1PAO (ORCPT ); Thu, 28 May 2020 11:00:14 -0400 IronPort-SDR: 4lV4agil5GtLim3Y439XlfjHz5F7j3Z0LWBMf3tWQn7QGF48VplY3f0ItkdZWlQc40NbRR7CIX WW91jjZ/Nvyg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2020 08:00:09 -0700 IronPort-SDR: pM4wjcuPZRQ5vwDho/yQiEyZonBjz3nKr5g1cDiMgTK9IFSqR6p66oTovWoO44rBrFz2zvNI00 RmIB6JvYOCVA== X-IronPort-AV: E=Sophos;i="5.73,445,1583222400"; d="scan'208";a="285191585" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2020 08:00:08 -0700 From: ira.weiny@intel.com To: linux-ext4@vger.kernel.org, Andreas Dilger , "Theodore Y. Ts'o" , Jan Kara , Eric Biggers Cc: Ira Weiny , Al Viro , Dan Williams , Dave Chinner , Christoph Hellwig , Jeff Moyer , "Darrick J. Wong" , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V5 5/9] fs/ext4: Only change S_DAX on inode load Date: Thu, 28 May 2020 07:59:59 -0700 Message-Id: <20200528150003.828793-6-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200528150003.828793-1-ira.weiny@intel.com> References: <20200528150003.828793-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org From: Ira Weiny To prevent complications with in memory inodes we only set S_DAX on inode load. FS_XFLAG_DAX can be changed at any time and S_DAX will change after inode eviction and reload. Add init bool to ext4_set_inode_flags() to indicate if the inode is being newly initialized. Assert that S_DAX is not set on an inode which is just being loaded. Reviewed-by: Jan Kara Signed-off-by: Ira Weiny --- Changes from V2: Rework based on moving the encryption patch to the end. Changes from RFC: Change J_ASSERT() to WARN_ON_ONCE() Fix bug which would clear S_DAX incorrectly --- fs/ext4/ext4.h | 2 +- fs/ext4/ialloc.c | 2 +- fs/ext4/inode.c | 13 ++++++++++--- fs/ext4/ioctl.c | 3 ++- fs/ext4/super.c | 4 ++-- fs/ext4/verity.c | 2 +- 6 files changed, 17 insertions(+), 9 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 3fdd044304a0..94e213e6d8ca 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2693,7 +2693,7 @@ extern int ext4_can_truncate(struct inode *inode); extern int ext4_truncate(struct inode *); extern int ext4_break_layouts(struct inode *); extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length); -extern void ext4_set_inode_flags(struct inode *); +extern void ext4_set_inode_flags(struct inode *, bool init); extern int ext4_alloc_da_blocks(struct inode *inode); extern void ext4_set_aops(struct inode *inode); extern int ext4_writepage_trans_blocks(struct inode *); diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 4b8c9a9bdf0c..7941c140723f 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1116,7 +1116,7 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, ei->i_block_group = group; ei->i_last_alloc_group = ~0; - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, true); if (IS_DIRSYNC(inode)) ext4_handle_sync(handle); if (insert_inode_locked(inode) < 0) { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 6532870f6a0b..01636cf5f322 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4420,11 +4420,13 @@ static bool ext4_should_enable_dax(struct inode *inode) return false; } -void ext4_set_inode_flags(struct inode *inode) +void ext4_set_inode_flags(struct inode *inode, bool init) { unsigned int flags = EXT4_I(inode)->i_flags; unsigned int new_fl = 0; + WARN_ON_ONCE(IS_DAX(inode) && init); + if (flags & EXT4_SYNC_FL) new_fl |= S_SYNC; if (flags & EXT4_APPEND_FL) @@ -4435,8 +4437,13 @@ void ext4_set_inode_flags(struct inode *inode) new_fl |= S_NOATIME; if (flags & EXT4_DIRSYNC_FL) new_fl |= S_DIRSYNC; - if (ext4_should_enable_dax(inode)) + + /* Because of the way inode_set_flags() works we must preserve S_DAX + * here if already set. */ + new_fl |= (inode->i_flags & S_DAX); + if (init && ext4_should_enable_dax(inode)) new_fl |= S_DAX; + if (flags & EXT4_ENCRYPT_FL) new_fl |= S_ENCRYPTED; if (flags & EXT4_CASEFOLD_FL) @@ -4650,7 +4657,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, * not initialized on a new filesystem. */ } ei->i_flags = le32_to_cpu(raw_inode->i_flags); - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, true); inode->i_blocks = ext4_inode_blocks(raw_inode, ei); ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl_lo); if (ext4_has_feature_64bit(sb)) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index f23168387deb..7ccf20b1488b 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -381,7 +381,8 @@ static int ext4_ioctl_setflags(struct inode *inode, ext4_clear_inode_flag(inode, i); } - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); + inode->i_ctime = current_time(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f7d76dcaedfe..80eb814c47eb 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1348,7 +1348,7 @@ static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, * Update inode->i_flags - S_ENCRYPTED will be enabled, * S_DAX may be disabled */ - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); } return res; } @@ -1375,7 +1375,7 @@ static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, * Update inode->i_flags - S_ENCRYPTED will be enabled, * S_DAX may be disabled */ - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); res = ext4_mark_inode_dirty(handle, inode); if (res) EXT4_ERROR_INODE(inode, "Failed to mark inode dirty"); diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c index f05a09fb2ae4..89a155ece323 100644 --- a/fs/ext4/verity.c +++ b/fs/ext4/verity.c @@ -244,7 +244,7 @@ static int ext4_end_enable_verity(struct file *filp, const void *desc, if (err) goto out_stop; ext4_set_inode_flag(inode, EXT4_INODE_VERITY); - ext4_set_inode_flags(inode); + ext4_set_inode_flags(inode, false); err = ext4_mark_iloc_dirty(handle, inode, &iloc); } out_stop: -- 2.25.1