# Re: \[PATCH 14/16\] block: switch polling to be bio based

- From: chenxiang (M) \<hidden\>
- Date: 2021-11-03 08:05:47 
- List: linux-block
- Page: https://ratatoskr.run/linux-block/2021/11/217616
- Thread: https://ratatoskr.run/linux-block/2021/10/215748/t.md

```text


在 2021/11/3 15:22, Christoph Hellwig 写道:
> On Wed, Nov 03, 2021 at 03:11:25PM +0800, chenxiang (M) wrote:
>> For some scsi command sent by function __scsi_execute() without data, it
>> has request but no bio (bufflen = 0),
>> then how to use bio_poll() for them ?
> You can't send these requests as polled.  Note that these are passthrough
> requests only.

Understood, thanks.

```