From patchwork Mon Oct  8 03:17:04 2012
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Subject: metadata_csum + unclean shutdown = failure to boot
Date: Sun, 07 Oct 2012 17:17:04 -0000
From: George Spelvin <linux@horizon.com>
X-Patchwork-Id: 189882
Message-Id: <20121008031704.17730.qmail@science.horizon.com>
To: linux@horizon.com, tytso@mit.edu
Cc: linux-ext4@vger.kernel.org, tm@tao.ma

I'm testing that patch, but you may want to fix it a bit more before submitting to
stable@...
fs/ext4/resize.c: In function 'update_backups':
fs/ext4/resize.c:973:39: error: too many arguments to function 'ext4_superblock_csum_set'
In file included from fs/ext4/ext4_jbd2.h:20:0,
                 from fs/ext4/resize.c:17:
fs/ext4/ext4.h:2049:13: note: declared here

The fix is of course obvious and I'm compiling it now.

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diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 41f6ef6..e781259 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -970,7 +970,7 @@ static void update_backups(struct super_block *sb,
 		goto exit_err;
 	}
 
-	ext4_superblock_csum_set(sb, (struct ext4_super_block *)data);
+	ext4_superblock_csum_set(sb);
 
 	while ((group = ext4_list_backups(sb, &three, &five, &seven)) < last) {
 		struct buffer_head *bh;