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| author | Duane Griffin <duaneg@dghda.com> | 2008-03-19 17:00:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-03-19 18:53:36 -0700 |
| commit | d00256766a0b4f1441931a7f569a13edf6c68200 (patch) | |
| tree | 114914bc2d531cad2c391d0f133494b7c7f3b811 /lib | |
| parent | 439aeec639d7c57f3561054a6d315c40fd24bb74 (diff) | |
| download | blackbird-op-linux-d00256766a0b4f1441931a7f569a13edf6c68200.tar.gz blackbird-op-linux-d00256766a0b4f1441931a7f569a13edf6c68200.zip | |
jbd2: correctly unescape journal data blocks
Fix a long-standing typo (predating git) that will cause data corruption if a
journal data block needs unescaping. At the moment the wrong buffer head's
data is being unescaped.
To test this case mount a filesystem with data=journal, start creating and
deleting a bunch of files containing only JBD2_MAGIC_NUMBER (0xc03b3998), then
pull the plug on the device. Without this patch the files will contain zeros
instead of the correct data after recovery.
Signed-off-by: Duane Griffin <duaneg@dghda.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions
