On Tue, 2023-04-25 at 11:20 -0700, Stefan Roesch wrote: > + > +int io_uring_register_napi(struct io_uring *ring, struct > io_uring_napi *napi) > +{ > + return __sys_io_uring_register(ring->ring_fd, > + IORING_REGISTER_NAPI, napi, 0); > +} > + > +int io_uring_unregister_napi(struct io_uring *ring, struct > io_uring_napi *napi) > +{ > + return __sys_io_uring_register(ring->ring_fd, > + IORING_UNREGISTER_NAPI, napi, 0); > +} my apologies if this is not the latest version of the patch but I think that it is... nr_args should be 1 to match what __io_uring_register() in the current corresponding kernel patch expects: https://git.kernel.dk/cgit/linux/commit/?h=io_uring-napi&id=787d81d3132aaf4eb4a4a5f24ff949e350e537d0