From: Mingming Cao Subject: [EXT4 set 2][PATCH 3/5] cleanups: set_jbd2_64bit_feature for >16TB ext4 fs Date: Sun, 01 Jul 2007 03:36:32 -0400 Message-ID: <1183275392.4010.122.camel@localhost.localdomain> Reply-To: cmm@us.ibm.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org Return-path: Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Set the journals JBD2_FEATURE_INCOMPAT_64BIT on devices with more than 32bit block sizes during mount time. This ensure proper record lenth when writing to the journal. Signed-off-by: Jose R. Santos Signed-off-by: Andreas Dilger Signed-off-by: Mingming Cao Signed-off-by: Laurent Vivier --- fs/ext4/super.c | 11 +++++++++++ 1 file changed, 11 insertions(+) Index: linux-2.6.22-rc4/fs/ext4/super.c =================================================================== --- linux-2.6.22-rc4.orig/fs/ext4/super.c 2007-06-11 16:15:54.000000000 -0700 +++ linux-2.6.22-rc4/fs/ext4/super.c 2007-06-11 16:16:10.000000000 -0700 @@ -1804,6 +1804,13 @@ goto failed_mount3; } + if (ext4_blocks_count(es) > 0xffffffffULL && + !jbd2_journal_set_features(EXT4_SB(sb)->s_journal, 0, 0, + JBD2_FEATURE_INCOMPAT_64BIT)) { + printk(KERN_ERR "ext4: Failed to set 64-bit journal feature\n"); + goto failed_mount4; + } + /* We have now updated the journal if required, so we can * validate the data journaling mode. */ switch (test_opt(sb, DATA_FLAGS)) {