On 6/18/24 8:06 PM, Gabriel Krisman Bertazi wrote: > Hi Jens, > > I didn't know this interface existed until today, when I started looking > at creating exactly this feature. My goal is to know which operation > supports which modes (registered buffers, bundled writes, iopoll). Now > that I know it exists, I might just expose the extra information through > io_uring_probe_op->flags, instead of adding a new operation. What do you > think? Yes! I've always wanted to add more to the probe side, for example which flags a given op may set in cqes as well, and what op specific flags it takes as well. Ideally something that is then also used when doing the prep in the op itself, as not to maintain this information in multiple spots. -- Jens Axboe