[libc-commits] [libc] [libc] Implement fallocate (PR #222843)

[Pavel Labath via libc-commits]

labath wrote:

We currently don't implement any `***64()` versions of functions. I don't think we've decided what exactly to do with those yet. Let's leave that out for now.

https://github.com/llvm/llvm-project/pull/222843