On Tue, May 21, 2019 at 11:45:19AM +0300, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
> 
> Here is idea of adding qiov_offset parameter to io path, to avoid
> a lot of places with same pattern of creating local_qiov or hd_qiov
> variables. Here is only read path for qcow2, if we like it, I'll
> make v2 with both read and write paths for qcow2.
> 
> Vladimir Sementsov-Ogievskiy (3):
>   block/io: introduce bdrv_co_preadv_part
>   block/qcow2: refactor qcow2_co_preadv to use buffer-based io
>   block/qcow2: implement .bdrv_co_preadv_part
> 
>  include/block/block_int.h |  6 +++
>  block/io.c                | 87 ++++++++++++++++++++++++++-------------
>  block/qcow2.c             | 67 +++++++++++++++---------------
>  3 files changed, 97 insertions(+), 63 deletions(-)

I like it!

Stefan

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