On 16.08.19 17:30, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> Here is an asynchronous scheme for handling fragmented qcow2
> reads and writes. Both qcow2 read and write functions loops through
> sequential portions of data. The series aim it to parallelize these
> loops iterations.
> It improves performance for fragmented qcow2 images, I've tested it
> as described below.

Thanks, I’ve changed two things:
- Replaced assert((x & (BDRV_SECTOR_SIZE - 1)) == 0) by
  assert(QEMU_IS_ALIGNED(x, BDRV_SECTOR_SIZE)) in patch 3 (conflict with
  “block: Use QEMU_IS_ALIGNED”), and
- Replaced the remaining instance of “qcow2_co_do_pwritev()” by
  “qcow2_co_pwritev_task()” in a comment in patch 4

and applied the series to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max