On 15/11/2019 16:10, Bob Liu wrote:
>>> io_cqring_overflow_flush(force=true) must have been called when this branch is executed,
>>> since io_cqring_overflow_flush() is the only place can set 'ctx->cq_overflow_flushed' to true.
>>>
>> Yes, it should have been called, but it sets this flag for the future
>> users of io_cqring_fill_event(), so any _new_ requests in
>> io_cqring_fill_event() will overflow instead of being added to
>> @overflow_list.
>>
> 
> Oh, I see..Thanks for the kindly explanation.
> 
Sure, no problem

-- 
Pavel Begunkov