# Re: \[PATCH 14/36\] aio: implement IOCB\_CMD\_POLL

- From: Jeff Moyer \<hidden\>
- Date: 2018-01-24 19:24:15 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2018/01/131904

```text
Christoph Hellwig [ref] writes:

> Simple one-shot poll through the io_submit() interface.  To poll for
> a file descriptor the application should submit an iocb of type
> IOCB_CMD_POLL.  It will poll the fd for the events specified in the
> the first 32 bits of the aio_buf field of the iocb.
>
> Unlike poll or epoll without EPOLLONESHOT this interface always works
> in one shot mode, that is once the iocb is completed, it will have to be
> resubmitted.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Acked-by: Jeff Moyer <redacted>

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