Re: [PATCH 06/16] io_uring: support for IO polling

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On Tue, Jan 08, 2019 at 09:56:35AM -0700, Jens Axboe wrote:
> Add polled variants of the read and write commands. These act like their
> non-polled counterparts, except we expect to poll for completion of
> them.

These aren't really need command variants, but a different type of context.

>  	case IORING_OP_FSYNC:
> +		if (ctx->flags & IORING_SETUP_IOPOLL)
> +			break;
>  		ret = io_fsync(&req->fsync, iocb, false);
>  		break;
>  	case IORING_OP_FDSYNC:
> +		if (ctx->flags & IORING_SETUP_IOPOLL)
> +			break;
>  		ret = io_fsync(&req->fsync, iocb, true);

I'd move this check into io_fsync to avoid a little duplication.



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