This article concurs. https://lwn.net/Articles/810414/ io_uring was first added ...

		jcoffland on May 11, 2020 \| parent \| context \| favorite \| on: Lord of the io_uring: io_uring tutorial, examples ... This article concurs. https://lwn.net/Articles/810414/ io_uring was first added to the mainline Linux kernel in 5.1.