v5 was here:
https://lists.gnu.org/archive/html/qemu-devel/2023-08/msg01883.html

Since then, just minor changes:
001/17:[----] [--] 'nbd: Replace bool structured_reply with mode enum'
002/17:[----] [--] 'nbd/client: Pass mode through to nbd_send_request'
003/17:[----] [--] 'nbd: Add types for extended headers'
004/17:[0006] [FC] 'nbd: Prepare for 64-bit request effect lengths'
005/17:[0004] [FC] 'nbd/server: Refactor handling of command sanity checks'
006/17:[----] [--] 'nbd/server: Support a request payload'
007/17:[0004] [FC] 'nbd/server: Prepare to receive extended header requests'
008/17:[----] [--] 'nbd/server: Prepare to send extended header replies'
009/17:[----] [--] 'nbd/server: Support 64-bit block status'
010/17:[----] [--] 'nbd/server: Enable initial support for extended headers'
011/17:[----] [--] 'nbd/client: Plumb errp through nbd_receive_replies'
012/17:[----] [--] 'nbd/client: Initial support for extended headers'
013/17:[----] [--] 'nbd/client: Accept 64-bit block status chunks'
014/17:[----] [--] 'nbd/client: Request extended headers during negotiation'
015/17:[----] [--] 'nbd/server: Refactor list of negotiated meta contexts'
016/17:[----] [--] 'nbd/server: Prepare for per-request filtering of BLOCK_STATUS'
017/17:[0002] [FC] 'nbd/server: Add FLAG_PAYLOAD support to CMD_BLOCK_STATUS'

The following patches still need review; all others already have
R-b. I plan on sending this in a pull request soon.

1, 4, 5, 6, 11, 12, 16, 17

Eric Blake (17):
  nbd: Replace bool structured_reply with mode enum
  nbd/client: Pass mode through to nbd_send_request
  nbd: Add types for extended headers
  nbd: Prepare for 64-bit request effect lengths
  nbd/server: Refactor handling of command sanity checks
  nbd/server: Support a request payload
  nbd/server: Prepare to receive extended header requests
  nbd/server: Prepare to send extended header replies
  nbd/server: Support 64-bit block status
  nbd/server: Enable initial support for extended headers
  nbd/client: Plumb errp through nbd_receive_replies
  nbd/client: Initial support for extended headers
  nbd/client: Accept 64-bit block status chunks
  nbd/client: Request extended headers during negotiation
  nbd/server: Refactor list of negotiated meta contexts
  nbd/server: Prepare for per-request filtering of BLOCK_STATUS
  nbd/server: Add FLAG_PAYLOAD support to CMD_BLOCK_STATUS

 docs/interop/nbd.txt                          |   1 +
 include/block/nbd.h                           | 147 +++--
 nbd/nbd-internal.h                            |   8 +-
 block/nbd.c                                   | 105 +++-
 nbd/client-connection.c                       |   4 +-
 nbd/client.c                                  | 140 +++--
 nbd/common.c                                  |  12 +-
 nbd/server.c                                  | 560 +++++++++++++-----
 qemu-nbd.c                                    |   8 +-
 block/trace-events                            |   3 +-
 nbd/trace-events                              |  19 +-
 tests/qemu-iotests/223.out                    |  18 +-
 tests/qemu-iotests/233.out                    |   4 +
 tests/qemu-iotests/241.out                    |   3 +
 tests/qemu-iotests/307.out                    |  15 +-
 .../tests/nbd-qemu-allocation.out             |   3 +-
 16 files changed, 763 insertions(+), 287 deletions(-)

-- 
2.41.0