On 03.10.19 19:15, Vladimir Sementsov-Ogievskiy wrote:
> Move bounce_buffer allocation block_copy_with_bounce_buffer. This
> commit simplifies further work on implementing copying by larger chunks
> (of different size) and further asynchronous handling of block_copy
> iterations (with help of block/aio_task API).
> 
> Allocation works fast, a lot faster than disk io, so it's not a problem
> that we now allocate/free bounce_buffer more times. And we anyway will
> have to allocate several bounce_buffers for parallel execution of loop
> iterations in future.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  block/block-copy.c | 21 ++++++++-------------
>  1 file changed, 8 insertions(+), 13 deletions(-)

Reviewed-by: Max Reitz <mreitz@redhat.com>