Losing the magic

Tons of places have moved to container_of and struct embedded, and away from void*. It's not really more typesafe when you try to get things intentionally wrong, but it does help a lot with silly mistakes and "oops wrong offset" screwups.

But yeah relative amount of void* might be an interesting metric to see whether the conjecture that the kernel moved towards more type safety actually holds.

struct foo {
        ...
        struct bar embedded;
        ...
};