On 12/7/22 8:31 AM, Jens Axboe wrote:
> 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?
Considering we didn't even wake before, I'd say that's a solid yes.
--
Jens Axboe
