743 				    unsigned long address, pgd_t *pgdp,  in follow_p4d_mask()  argument
750 	p4d = p4d_offset(pgdp, address);  in follow_p4d_mask()
2472 static int gup_huge_pgd(pgd_t orig, pgd_t *pgdp, unsigned long addr,  in gup_huge_pgd()  argument
2491 	if (unlikely(pgd_val(orig) != pgd_val(*pgdp))) {  in gup_huge_pgd()
2572 static int gup_p4d_range(pgd_t *pgdp, pgd_t pgd, unsigned long addr, unsigned long end,  in gup_p4d_range()  argument
2578 	p4dp = p4d_offset_lockless(pgdp, pgd, addr);  in gup_p4d_range()
2601 	pgd_t *pgdp;  in gup_pgd_range()  local
2603 	pgdp = pgd_offset(current->mm, addr);  in gup_pgd_range()
2605 		pgd_t pgd = READ_ONCE(*pgdp);  in gup_pgd_range()
2611 			if (!gup_huge_pgd(pgd, pgdp, addr, next, flags,  in gup_pgd_range()
2618 		} else if (!gup_p4d_range(pgdp, pgd, addr, next, flags, pages, nr))  in gup_pgd_range()
2620 	} while (pgdp++, addr = next, addr != end);  in gup_pgd_range()