Re: [PATCH for-next v2 11/12] io_uring: do msg_ring in target task via tw

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On 12/6/22 8:53?PM, Pavel Begunkov wrote:
> @@ -43,6 +61,15 @@ static int io_msg_ring_data(struct io_kiocb *req)
>  	if (msg->src_fd || msg->dst_fd || msg->flags)
>  		return -EINVAL;
>  
> +	if (target_ctx->task_complete && current != target_ctx->submitter_task) {
> +		init_task_work(&msg->tw, io_msg_tw_complete);
> +		if (task_work_add(target_ctx->submitter_task, &msg->tw,
> +				  TWA_SIGNAL))
> +			return -EOWNERDEAD;
> +
> +		return IOU_ISSUE_SKIP_COMPLETE;
> +	}
> +

We should probably be able to get by with TWA_SIGNAL_NO_IPI here, no?

-- 
Jens Axboe



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