[PATCH 1/6] IB/core: add support for draining Shared receive queues

Sagi Grimberg sagi at grimberg.me
Wed Jun 19 02:14:49 PDT 2024



On 18/06/2024 19:07, Bart Van Assche wrote:
> On 6/17/24 5:10 PM, Max Gurtovoy wrote:
>> +    if (wait_for_completion_timeout(&qp->srq_completion, 10 * HZ) > 
>> 0) {

I think this warrants a comment to why you stop after consuming cq->cqe 
completions
(i.e. shared completions).

>> +        while (polled != cq->cqe) {
>> +            n = ib_process_cq_direct(cq, cq->cqe - polled);
>> +            if (!n)
>> +                return;
>> +            polled += n;
>> +        }
>> +    }
>
> Why a hardcoded timeout (10 * HZ) instead of waiting forever?

Agreed. Is there a scenario where the IB event is missed or something?



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