linux/fs/jbd2
Eric Sandeen eeecef0af5 jbd2: don't write superblock when if its empty
This sequence:

# truncate --size=1g fsfile
# mkfs.ext4 -F fsfile
# mount -o loop,ro fsfile /mnt
# umount /mnt
# dmesg | tail

results in an IO error when unmounting the RO filesystem:

[  318.020828] Buffer I/O error on device loop1, logical block 196608
[  318.027024] lost page write due to I/O error on loop1
[  318.032088] JBD2: Error -5 detected when updating journal superblock for loop1-8.

This was a regression introduced by commit 24bcc89c7e: "jbd2: split
updating of journal superblock and marking journal empty".

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
2012-08-18 22:29:40 -04:00
..
checkpoint.c jbd2: remove bh_state lock from checkpointing code 2012-03-13 22:45:25 -04:00
commit.c jbd2: remove the second argument of kmap_atomic 2012-07-23 14:11:22 +08:00
journal.c jbd2: don't write superblock when if its empty 2012-08-18 22:29:40 -04:00
Kconfig jbd2: Grab a reference to the crc32c driver if necessary 2012-05-27 07:50:56 -04:00
Makefile
recovery.c jbd2: check return value of blkdev_issue_flush() 2012-08-17 09:56:17 -04:00
revoke.c jbd2: checksum revocation blocks 2012-05-27 08:08:24 -04:00
transaction.c jbd2: use kmem_cache_zalloc wrapper instead of flag 2012-06-01 00:10:32 -04:00