pgd_none           14 include/asm-generic/4level-fixup.h 	((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
pgd_none          306 include/asm-generic/pgtable.h 	if (pgd_none(*pgd))
pgd_none         1415 include/linux/mm.h 	return (unlikely(pgd_none(*pgd)) && __pud_alloc(mm, pgd, address))?