https://old.reddit.com/r/linux/comments/1iskjgo/christoph_hellwig_linus_in_private_said_that_he/

https://lore.kernel.org/rust-for-linux/Z7SwcnUzjZYfuJ4-@infradead.org/

while Linus in private said that he absolutely is going to merge Rust
code over a maintainers objection. (He did so in private in case you
are looking for a reference).

So as of now, as a Linux developer or maintainer you must deal with
Rust if you want to or not.

Where Rust code doesn't just mean Rust code [1] - the bindings look
nothing like idiomatic Rust code, they are very different kind of beast
trying to bridge a huge semantic gap. And they aren't doing that in a
few places, because they are showed into every little subsystem and
library right now.