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 v2: 01: add Eric's r-b 02: keep INT_MAX limit for discard 03: s/max_pwrite_zeroes_no_fallback/max_pwrite_zeroes_fast/ (a bit shorter, so that if condition fit in one line) default is changed to be max_pwrite_zeroes, so blkdebug is unchanged and we need one more patch: 04 refactor max_write_zeroes calculation in bdrv_co_do_pwrite_zeroes, prepare to last patch 04: new, actual change for nbd driver 05: reword commit message (fix -> refactoring) as I don't see bugs here. Keep an r-b 06: rewording, grammar [Eric] rebase on 03 changes Vladimir Sementsov-Ogievskiy (6): block/nbd-client: drop max_block restriction from block_status block/nbd-client: drop max_block restriction from discard 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 | 7 +++---- 3 files changed, 44 insertions(+), 10 deletions(-) -- 2.21.0
