Function alloc_shared_memory_hugetlb 

pub fn alloc_shared_memory_hugetlb(
    size: usize,
    name: &str,
    hugepage_size: Option<usize>,
    _numa_node: Option<u32>,
) -> Result<OwnedFd>

Allocates a hugetlb mappable shared memory object of size bytes.

If hugepage_size is specified, it is encoded in the memfd flags using the Linux MFD_HUGE_* convention.