[v3,0/4] nbd: reduce max_block restrictions

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Series	nbd: reduce max_block restrictions \| expand [v3,0/4] nbd: reduce max_block restrictions [v3,1/4] block: add max_pwrite_zeroes_fast to BlockLimits [v3,4/4] block/io: auto-no-fallback for write-zeroes

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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Subject: [PATCH v3 0/4] nbd: reduce max_block restrictions
Date: Wed, 10 Jun 2020 21:23:01 +0300
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Series

nbd: reduce max_block restrictions | expand

Message

Vladimir Sementsov-Ogievskiy June 10, 2020, 6:23 p.m. UTC

Recent changes in NBD protocol allowed to use some commands without
max_block restriction. Let's drop the restrictions.

NBD change is here:
https://github.com/NetworkBlockDevice/nbd/commit/9f30fedb8699f151e7ef4ccc07e624330be3316b#diff-762fb7c670348da69cc9050ef58fe3ae

v3: first two patches from v2 was merged. Let's continue with the rest.

Vladimir Sementsov-Ogievskiy (4):
  block: add max_pwrite_zeroes_fast to BlockLimits
  block/nbd: define new max_write_zero_fast limit
  block/io: refactor bdrv_co_do_pwrite_zeroes head calculation
  block/io: auto-no-fallback for write-zeroes

 include/block/block_int.h |  8 ++++++++
 block/io.c                | 39 +++++++++++++++++++++++++++++++++------
 block/nbd.c               |  1 +
 3 files changed, 42 insertions(+), 6 deletions(-)