[Nbd] [PATCH v3 0/2] block size extension

[Eric Blake <eblake@...696...>]

Applies on top of Alex's v7 SHOULD/MUST/MAY patch.

In v3:

Rework NBD_OPT_GO reply (yet again), where the first patch
introduces the framework of NBD_REP_INFO/NBD_REP_EXPORT and
the second extends the framework with NBD_INFO_BLOCK_SIZE.

Add NBD_OPT_BLOCK_SIZE for the client to advertise that it will
obey alignment constraints.

Document a default minimum block size of 1, and default minimum
block size of 4096.

Tweak some wordings based on review.

Eric Blake (2):
  doc: Use dedicated reply types for NBD_OPT_INFO/GO
  doc: Add details on block sizes

 doc/proto.md | 290 ++++++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 230 insertions(+), 60 deletions(-)

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2.5.5