[PATCH v3 00/10] drop unallocated_blocks_are_zero

[Vladimir Sementsov-Ogievskiy]

This is first step to block-status refactoring, and solves most simple
problem mentioned in my investigation of block-status described in
the thread "backing chain & block status & filters":
  https://lists.gnu.org/archive/html/qemu-devel/2020-04/msg04706.html

The whole series is reviewed, let's proceed with it please!

v3: rebase on master
02: grammar fix in commit msg, add Eric's r-b
03,04,09: add Eric's r-b
10: add my r-b

Eric Blake (1):
  qed: Simplify backing reads

Vladimir Sementsov-Ogievskiy (9):
  qemu-img: convert: don't use unallocated_blocks_are_zero
  block: inline bdrv_unallocated_blocks_are_zero()
  block/vdi: return ZERO block-status when appropriate
  block/vpc: return ZERO block-status when appropriate
  block/crypto: drop unallocated_blocks_are_zero
  block/iscsi: drop unallocated_blocks_are_zero
  block/file-posix: drop unallocated_blocks_are_zero
  block/vhdx: drop unallocated_blocks_are_zero
  block: drop unallocated_blocks_are_zero

 block/qed.h               |  1 -
 include/block/block.h     |  6 ----
 include/block/block_int.h | 12 +++++++-
 block.c                   | 15 ---------
 block/crypto.c            |  1 -
 block/file-posix.c        |  3 --
 block/io.c                |  8 ++---
 block/iscsi.c             |  1 -
 block/qcow2.c             |  1 -
 block/qed.c               | 65 ++++-----------------------------------
 block/vdi.c               |  3 +-
 block/vhdx.c              |  3 --
 block/vpc.c               |  3 +-
 qemu-img.c                |  4 +--
 14 files changed, 24 insertions(+), 102 deletions(-)

-- 
2.18.0