[Qemu-devel] [PATCH v4 0/4] block: Block driver callbacks fixes

[Manos Pitsidianakis <el13635@mail.ntua.gr>]

This series makes implementing some of the bdrv_* callbacks easier for block
filters by passing requests to bs->file if bs->drv doesn't implement it instead
of failing, and adding default bdrv_co_get_block_status() implementations.

This is based against Kevin Wolf's block branch, commit
da4bd74d2450ab72a7c26bbabb10c6a287dd043e

v4:
  forward only for block filters
  new patch: remove bdrv_media_changed
  dropped commit `block: Use defaults of bdrv_* callbacks in raw`, since raw is
  not a filter driver and is incompatible with the changes.

v3:
  minor changes by Eric Blake's suggestion
  new patch: remove bdrv_truncate method from blkdebug

v2:
  do not pass to bs->file if bs->drv is NULL
  move bs->file check outside of bdrv_inc_in_flight() area in bdrv_co_ioctl()
  new patch: remove duplicate code from block/raw-format.c

Manos Pitsidianakis (4):
  block: pass bdrv_* methods to bs->file by default in block filters
  block: remove bdrv_media_changed
  block: remove bdrv_truncate callback in blkdebug
  block: add default implementations for bdrv_co_get_block_status()

 block.c                   | 35 +++++++++++++++++++----------------
 block/blkdebug.c          | 19 ++-----------------
 block/commit.c            | 12 +-----------
 block/io.c                | 26 ++++++++++++++++++++++++++
 block/mirror.c            | 12 +-----------
 block/raw-format.c        |  6 ------
 include/block/block.h     |  1 -
 include/block/block_int.h | 25 +++++++++++++++++++++++--
 8 files changed, 72 insertions(+), 64 deletions(-)

-- 
2.11.0