linux-ext4 - [PATCH 41/51] tune2fs: Force MMP update when changing metadata

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Message-ID: <20111214011749.20947.41482.stgit@elm3c44.beaverton.ibm.com>
Date:	Tue, 13 Dec 2011 17:17:49 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Tso <tytso@....edu>,
	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	Sunil Mushran <sunil.mushran@...cle.com>,
	Amir Goldstein <amir73il@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Mingming Cao <cmm@...ibm.com>,
	Joel Becker <jlbec@...lplan.org>, linux-ext4@...r.kernel.org,
	Coly Li <colyli@...il.com>
Subject: [PATCH 41/51] tune2fs: Force MMP update when changing metadata_csum
	flag

When changing the metadata_csum flag, always force out a new MMP block.

Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---
 misc/tune2fs.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)


diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 8301927..2b06a86 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -704,6 +704,7 @@ static void rewrite_metadata_checksums(ext2_filsys fs)
 	ext2fs_read_bitmaps(fs);
 	ext2fs_mark_ib_dirty(fs);
 	ext2fs_mark_bb_dirty(fs);
+	ext2fs_mmp_update2(fs, 1);
 	fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 	fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 	if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,

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