follow_huge_pmd   206 arch/x86/mm/hugetlbpage.c follow_huge_pmd(struct mm_struct *mm, unsigned long address,
follow_huge_pmd   231 arch/x86/mm/hugetlbpage.c follow_huge_pmd(struct mm_struct *mm, unsigned long address,
follow_huge_pmd    84 include/linux/hugetlb.h #define follow_huge_pmd(mm, addr, pmd, write)	NULL