[PATCH v4 00/16] 64bit block-layer: part I

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Hi all!

We want 64bit write-zeroes, and for this, convert all io functions to
64bit.

We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).

Please refer to initial cover-letter 
 https://lists.gnu.org/archive/html/qemu-devel/2020-03/msg08723.html
for more info.

v4: I found, that some more work is needed for block/block-backend, so
decided to make partI, converting block/io

v4 is based on Kevin's block branch ([PULL 00/34] Block layer patches)
   for BDRV_MAX_LENGTH

changes:
01-05: new
06: add Alberto's r-b
07: new
08-16: rebase, add new-style request check, improve commit-msg, drop r-bs

Based-on: <20201211170812.228643-1-kwolf@redhat.com>

Vladimir Sementsov-Ogievskiy (16):
  block: refactor bdrv_check_request: add errp
  util/iov: make qemu_iovec_init_extended() honest
  block: fix theoretical overflow in bdrv_init_padding()
  block/io: refactor bdrv_pad_request(): move bdrv_pad_request() up
  block/io: bdrv_pad_request(): support qemu_iovec_init_extended failure
  block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit
    bytes
  block/io: improve bdrv_check_request: check qiov too
  block: use int64_t as bytes type in tracked requests
  block/io: use int64_t bytes in driver wrappers
  block/io: support int64_t bytes in bdrv_co_do_pwrite_zeroes()
  block/io: support int64_t bytes in bdrv_aligned_pwritev()
  block/io: support int64_t bytes in bdrv_co_do_copy_on_readv()
  block/io: support int64_t bytes in bdrv_aligned_preadv()
  block/io: support int64_t bytes in bdrv_co_p{read,write}v_part()
  block/io: support int64_t bytes in read/write wrappers
  block/io: use int64_t bytes in copy_range

 include/block/block.h           |  17 +-
 include/block/block_int.h       |  26 +--
 include/block/throttle-groups.h |   2 +-
 include/qemu/iov.h              |   2 +-
 block/blkverify.c               |   2 +-
 block/file-posix.c              |   2 +-
 block/io.c                      | 274 ++++++++++++++++++++++----------
 block/throttle-groups.c         |   5 +-
 tests/test-write-threshold.c    |   5 +-
 util/iov.c                      |  25 ++-
 block/trace-events              |  12 +-
 11 files changed, 252 insertions(+), 120 deletions(-)

-- 
2.25.4