Jens Axboe

We could probably get the ack, I think it mostly stalled on people saying it's just a subset of what is already supported. What is nice about recvfrom/sendto though is...

I'm fine with including tools like that with fio.

@bose-abhishek can you please address the two review comments?

> We expect to merge some IOs to write together, for better ssd/hdd performance. But then you expect all of those to complete at the same time anyway, so it...

Never rely on a kernel version check. Either just try and the command and see if it fails, or use io_uring_get_probe() and check if that opcode is marked as supported.

Thanks, I've updated the commit and also included a link to this issue.

Memory allocated by the kernel is always mapped, it's not like the application heap which can be faulted in. No faults can occur on memory allocated on the kernel side....

Yes, that is out of date. There are a few flags there now, just only documented in the man pages where they are relevant. Should all be in io_uring.7 as...

Tests do return fail/success/skip now.

Just do what will work for you, I suspect the other use cases are identical or very similar.