linux: Comment distinction between msync and mount MS_ flags
linux: Comment distinction between msync and mount MS_ flags

They have different types and should be visually separated for ease of
reading.

superriva/libc,philippkeller/libc,zethra/libc,zethra/libc,rust-lang/libc,rust-lang-nursery/libc,rust-lang-nursery/libc,mneumann/libc,cactorium/libc,mneumann/libc,philippkeller/libc,cactorium/libc,rust-lang/libc,superriva/libc,anatol/libc,rust-lang/libc,anatol/libc,rust-lang-nursery/libc,philippkeller/libc,mneumann/libc,superriva/libc,cactorium/libc,anatol/libc,zethra/libc