Merge branch 'opt/register-ring-fd' of https://github.com/calebsander/fio * 'opt/register-ring-fd' of https://github.com/calebsander/fio: io_uring: try to register ring fd io_uring: consolidate fio_ioring{,_cmd}_post_init() io_uring: consolidate fio_ioring{,_cmd}_queue_init()