Since a couple of month I noticed that our `LinkFutureTest` fails in the `Valid->Invalid->Valid` case. We expect io_uring to submit the broken chains until the invalid requests but since [cf10960426515](https://github.com/torvalds/linux/commit/cf109604265156bb22c45e0c2aa62f53a697a3f4) `io_uring` does no longer submit broken links at all which seams reasonable.