v5 was here:
https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg05958.html
original cover letter here:
https://lists.gnu.org/archive/html/qemu-devel/2020-04/msg03464.html

Hopefully this version is close enough to do a pull request Monday.

Since then:
- patch 2: drop 'measure --bitmaps' sugar on top of QMP [Nir]
- patch 3: add function comment
- patch 4: fallout from patch 2

001/5:[----] [--] 'iotests: Fix test 178'
002/5:[0073] [FC] 'qcow2: Expose bitmaps' size during measure'
003/5:[0001] [FC] 'qemu-img: Factor out code for merging bitmaps'
004/5:[0001] [FC] 'qemu-img: Add convert --bitmaps option'
005/5:[----] [--] 'iotests: Add test 291 to for qemu-img bitmap coverage'

Series can also be downloaded at:
https://repo.or.cz/qemu/ericb.git/shortlog/refs/tags/qemu-img-bitmaps-v6

Eric Blake (5):
  iotests: Fix test 178
  qcow2: Expose bitmaps' size during measure
  qemu-img: Factor out code for merging bitmaps
  qemu-img: Add convert --bitmaps option
  iotests: Add test 291 to for qemu-img bitmap coverage

 docs/tools/qemu-img.rst          |  13 +++-
 qapi/block-core.json             |  16 +++--
 block/qcow2.h                    |   2 +
 block/crypto.c                   |   2 +-
 block/qcow2-bitmap.c             |  36 ++++++++++
 block/qcow2.c                    |  14 +++-
 block/raw-format.c               |   2 +-
 qemu-img.c                       | 115 ++++++++++++++++++++++++++-----
 qemu-img-cmds.hx                 |   4 +-
 tests/qemu-iotests/178.out.qcow2 |  18 ++++-
 tests/qemu-iotests/178.out.raw   |   2 +-
 tests/qemu-iotests/190           |  45 +++++++++++-
 tests/qemu-iotests/190.out       |  27 +++++++-
 tests/qemu-iotests/291           | 112 ++++++++++++++++++++++++++++++
 tests/qemu-iotests/291.out       |  80 +++++++++++++++++++++
 tests/qemu-iotests/group         |   1 +
 16 files changed, 455 insertions(+), 34 deletions(-)
 create mode 100755 tests/qemu-iotests/291
 create mode 100644 tests/qemu-iotests/291.out

-- 
2.26.2