[PATCH for-4.2? v3 0/8] block: Fix resize (extending) of short overlays

[Kevin Wolf]

See patch 4 for the description of the bug fixed.

v3:
- Don't allow blocking the monitor for a zero write in block_resize
  (even though we can already blockfor other reasons there). This is
  mainly responsible for the increased complexity compared to v2.
  Personally, I think this is not an improvement over v2, but if this is
  what it takes to fix a corruption issue in 4.2... [Max]
- Don't use huge image files in the test case [Vladimir]

v2:
- Switched order of bs->total_sectors update and zero write [Vladimir]
- Fixed coding style [Vladimir]
- Changed the commit message to contain what was in the cover letter
- Test all preallocation modes
- Test allocation status with qemu-io 'map' [Vladimir]

Kevin Wolf (8):
  block: bdrv_co_do_pwrite_zeroes: 64 bit 'bytes' parameter
  block: Add no_fallback parameter to bdrv_co_truncate()
  qcow2: Declare BDRV_REQ_NO_FALLBACK supported
  block: truncate: Don't make backing file data visible
  iotests: Add qemu_io_log()
  iotests: Fix timeout in run_job()
  iotests: Support job-complete in run_job()
  iotests: Test committing to short backing file

 include/block/block.h          |   5 +-
 include/sysemu/block-backend.h |   2 +-
 block/block-backend.c          |   4 +-
 block/commit.c                 |   4 +-
 block/crypto.c                 |   4 +-
 block/io.c                     |  55 +++++++--
 block/mirror.c                 |   2 +-
 block/parallels.c              |   6 +-
 block/qcow.c                   |   4 +-
 block/qcow2-refcount.c         |   2 +-
 block/qcow2.c                  |  22 ++--
 block/qed.c                    |   2 +-
 block/raw-format.c             |   2 +-
 block/vdi.c                    |   2 +-
 block/vhdx-log.c               |   2 +-
 block/vhdx.c                   |   6 +-
 block/vmdk.c                   |  10 +-
 block/vpc.c                    |   2 +-
 blockdev.c                     |   2 +-
 qemu-img.c                     |   2 +-
 qemu-io-cmds.c                 |   2 +-
 tests/test-block-iothread.c    |   6 +-
 tests/qemu-iotests/274         | 152 ++++++++++++++++++++++++
 tests/qemu-iotests/274.out     | 203 +++++++++++++++++++++++++++++++++
 tests/qemu-iotests/group       |   1 +
 tests/qemu-iotests/iotests.py  |  11 +-
 26 files changed, 463 insertions(+), 52 deletions(-)
 create mode 100755 tests/qemu-iotests/274
 create mode 100644 tests/qemu-iotests/274.out

-- 
2.20.1