[$] Toward the unification of hugetlbfs

The kernel's hugetlbfssubsystem was the first mechanism by which the kernel made huge pagesavailable to user space; it was added to the 2.5.46 development kernel in2002. While hugetlbfs remains useful, it is also viewed as a sort ofsecond memory-management subsystem that would be best unified with the restof the kernel. At the 2024 Linux Storage,Filesystem, Memory-Management and BPF Summit, Peter Xu raised thequestion of what that unification would involve and what the first stepsmight be.