From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Darrick J. Wong" Subject: [PATCH 1/3] ext4: enable journal checksum when metadata checksum feature enabled Date: Mon, 27 Oct 2014 18:19:22 -0700 Message-ID: <20141028011922.30103.65942.stgit@birch.djwong.org> References: <20141028011916.30103.50751.stgit@birch.djwong.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: linux-ext4@vger.kernel.org To: tytso@mit.edu, darrick.wong@oracle.com Return-path: Received: from aserp1040.oracle.com ([141.146.126.69]:40784 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753078AbaJ1BT1 (ORCPT ); Mon, 27 Oct 2014 21:19:27 -0400 In-Reply-To: <20141028011916.30103.50751.stgit@birch.djwong.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: If metadata checksumming is turned on for the FS, we need to tell the journal to use checksumming too. Signed-off-by: Darrick J. Wong --- fs/ext4/super.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1eda6ab..5c11e21 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3526,6 +3526,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) #ifdef CONFIG_EXT4_FS_POSIX_ACL set_opt(sb, POSIX_ACL); #endif + /* don't forget to enable journal_csum when metadata_csum is enabled. */ + if (ext4_has_metadata_csum(sb)) + set_opt(sb, JOURNAL_CHECKSUM); + if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA) set_opt(sb, JOURNAL_DATA); else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_ORDERED)