Man pages matching name hugetlbfs_find_path in section 3:

hugetlbfs_find_path.3.en	debian 10 / libhugetlbfs-dev
hugetlbfs_find_path.3.en	debian 11 / libhugetlbfs-dev
hugetlbfs_find_path.3.en	debian 12 / libhugetlbfs-dev