[PATCH v2 0/9] drop unallocated_blocks_are_zero

[Vladimir Sementsov-Ogievskiy]

Hi all!

v2 (by Eric's review):

01: moved to the start of the series, add Eric's r-b
02: new
03-04: improve commit message
05: add Eric's r-b
06-08: improve commit message a bit, add Eric's r-b
09: typos and wording, rebase on 02


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


unallocated_blocks_are_zero doesn't simplify all the logic about
block-status, and happily it's not needed, as shown by the following
patches. So, let's get rid of it.

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

 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               |  1 -
 block/vdi.c               |  3 +--
 block/vhdx.c              |  3 ---
 block/vpc.c               |  3 +--
 qemu-img.c                |  4 +---
 13 files changed, 18 insertions(+), 43 deletions(-)

-- 
2.21.0