For what it's worth, I have developed an actor-based async file i/o framework that does multiplexing, caching and format translation. Files are actors and pages

For what it's worth, I have developed an actor-based async file i/o framework that does multiplexing, caching and format translation. Files are actors and pages (which serve fixed size blocks out of a particular file) are actors. The main motivation was to support caching and prioritised i/o. It doesn't target io_uring yet though.