# Re: \[PATCH v2\] virtio-blk: support per-device queue depth

- From: Jason Wang \<hidden\>
- Date: 2021-02-19 03:16:15 
- List: virtualization
- Page: https://ratatoskr.run/virtualization/2021/02/15817815
- Thread: https://ratatoskr.run/virtualization/2021/02/15817815/t.md

```text

On 2021/2/19 11:06 上午, Joseph Qi wrote:
> Hi Michael,
> Could you take this now?


It has been merged:

https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h=vhost&id=8c6daa79e527a05adb6f5d42cbed2fe36c6b3e83

Thanks


>
> Thanks,
> Joseph
>
> On 2/1/21 10:17 AM, Joseph Qi wrote:
>> Ping...
>>
>> On 1/26/21 7:13 PM, Stefan Hajnoczi wrote:
>>> On Fri, Jan 22, 2021 at 05:21:46PM +0800, Joseph Qi wrote:
>>>> module parameter 'virtblk_queue_depth' was firstly introduced for
>>>> testing/benchmarking purposes described in commit fc4324b4597c
>>>> ("virtio-blk: base queue-depth on virtqueue ringsize or module param").
>>>> And currently 'virtblk_queue_depth' is used as a saved value for the
>>>> first probed device.
>>>> Since we have different virtio-blk devices which have different
>>>> capabilities, it requires that we support per-device queue depth instead
>>>> of per-module. So defaultly use vq free elements if module parameter
>>>> 'virtblk_queue_depth' is not set.
>>>>
>>>> Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
>>>> Acked-by: Jason Wang <redacted>
>>>> ---
>>>>   drivers/block/virtio_blk.c | 11 +++++++----
>>>>   1 file changed, 7 insertions(+), 4 deletions(-)

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

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