Eric Sandeen 0699c6dd66 jbd2: don't write superblock when if its empty ... commit eeecef0af5 upstream. 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 24bcc89c7e7c: "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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-10-13 05:38:39 +09:00
..
checkpoint.c	jbd2: remove bh_state lock from checkpointing code	2012-03-13 22:45:25 -04:00
commit.c	jbd2: use GFP_NOFS for blkdev_issue_flush	2012-04-23 21:43:41 -04:00
journal.c	jbd2: don't write superblock when if its empty	2012-10-13 05:38:39 +09:00
Kconfig	Revert "task_struct: make journal_info conditional"	2009-12-17 13:23:24 -08:00
Makefile	[PATCH] jbd2: rename jbd2 symbols to avoid duplication of jbd symbols	2006-10-11 11:14:15 -07:00
recovery.c	jbd2: issue cache flush after checkpointing even with internal journal	2012-03-13 22:22:54 -04:00
revoke.c	jbd2: use KMEM_CACHE instead of kmem_cache_create()	2012-02-20 17:53:03 -05:00
transaction.c	Ext4 commits for 3.3 merge window; mostly cleanups and bug fixes	2012-03-28 10:02:55 -07:00