On Tue, Mar 14, 2017 at 04:05:02PM +0800, Qu Wenruo wrote:

v2:
  Abstract the original code to read out data in one btrfs file to
  btrfs_read_file().
  Use simple_range and btrfs_reserved_ranges[] to cleanup open code.
v3:
  Rebased to v4.10.
  Squash modification in later commits to their previous owner.
  Fix a converity report, which doesn't exit when an error is found in
  check_convert_image()
  Fix a lot of check scripts warning

I did not mention that explicitly under v2, but the series has been
merged to devel so incremental changes should be sent from now on. I
went through the patches almost line by line and fixed things here and
there. The patchset-to-patchset diff is not large (attached). If you
think there are still issues to fix, please send them on top of the
devel branch.