[PATCH v3 0/4] ext4: fix a data corruption problem

["zhangyi (F)" <yi.zhang@huawei.com>]

Hi:

This patch set is the third version which want to fix a data corruption,
have been testd by xfstests.

 - The first patch fix the data corruption problem we captured. The root
   case is that we forgot to clear dirty flag when revorking a buffer
   belongs to older transaction.
 - The second and third patches are cleanup patches which remove
   clean_bdev_aliases() related calls and move the logic to
   jbd2_journal_forget() when forgetting metadata (suggested by Jan Kara).
 - The last patch change the return value of ext4_ext_convert_to_initialized().

Please review.

Thanks,
Yi.

----------

Changes since v2:
 - Change the commit log and comments in the first patch.
 - Add the three cleanup patches to remove all clean_bdev_aliases() calls
   and change the return value of ext4_ext_convert_to_initialized().


zhangyi (F) (4):
  jbd2: make sure dirty flag is cleared while revorking a buffer which
    belongs to older transaction
  jbd2: discard dirty data when forgetting an un-journalled buffer
  ext4: cleanup clean_bdev_aliases() calls
  ext4: convert ext4_split_extent() to return requested length

 fs/ext4/extents.c     | 26 +++++++---------------
 fs/ext4/inode.c       |  7 ------
 fs/ext4/page-io.c     |  4 +---
 fs/jbd2/transaction.c | 60 +++++++++++++++++++++++++++++++++++++++++++--------
 4 files changed, 60 insertions(+), 37 deletions(-)

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2.7.4