[libc-commits] [libc] [libc] Implement mlock family of functions (PR #80016)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

oh no! So sorry about the "mid air collision" @Lancern 

We still appreciate the contribution! Maybe @Lancern you could still help us review #79645 ? @SchrodingerZhu please consider mentioning @Lancern in the commit message to thank them for inspiration for additional tests.

https://github.com/llvm/llvm-project/pull/80016