Re: [PATCH v2 1/3] file-posix: add `aio-max-batch` option

[Stefan Hajnoczi]

On Tue, Oct 26, 2021 at 06:23:44PM +0200, Stefano Garzarella wrote:
> Commit d7ddd0a161 ("linux-aio: limit the batch size using
> `aio-max-batch` parameter") added a way to limit the batch size
> of Linux AIO backend for the entire AIO context.
> 
> The same AIO context can be shared by multiple devices, so
> latency-sensitive devices may want to limit the batch size even
> more to avoid increasing latency.
> 
> For this reason we add the `aio-max-batch` option to the file
> backend, which will be used by the next commits to limit the size of
> batches including requests generated by this device.
> 
> Suggested-by: Kevin Wolf <kwolf@redhat.com>
> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> 
> Notes:
>     v2:
>     - @aio-max-batch documentation rewrite [Stefan, Kevin]
> 
>  qapi/block-core.json | 7 +++++++
>  block/file-posix.c   | 9 +++++++++
>  2 files changed, 16 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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