Hi Jens and Team While experimenting with io_uring and liburing I seem to have hit an issue with registered buffers. I can't see a way that either io_uring_register() or liburing can return the buffer indicies associated with registered buffers. In addition, there is no way to set sqe.buf_index via liburing right now when submitting an IO (it is memset to 0 in liburing.h). The end result is that io_uring IO start to fail when we do them from a set of registered buffers. I'd be happy to work on a patch for this but could do with confirmation that this a problem and some guidance on a good approach to fixing this in both the system call and the user-space library. BTW while liburing tests the creation of multiple registered buffers it never issues IO against them so that would be a hole I'd like to fill too. Cheers Stephen
