Merge tag 'pull-nbd-2023-04-04' of https://repo.or.cz/qemu/ericb into staging

Merge tag 'pull-nbd-2023-04-04' of https://repo.or.cz/qemu/ericb into staging

nbd patches for 2023-04-04

- Eric Blake: use TCP_NODELAY in nbd server, as followup to corking

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# gpg: Signature made Tue 04 Apr 2023 14:15:12 BST
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* tag 'pull-nbd-2023-04-04' of https://repo.or.cz/qemu/ericb:
  nbd/server: Request TCP_NODELAY

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>