382 static int copy_pmd(pud_t *dst_pudp, pud_t *src_pudp, unsigned long start,  in copy_pmd()  argument
390 	if (pud_none(READ_ONCE(*dst_pudp))) {  in copy_pmd()
394 		pud_populate(&init_mm, dst_pudp, dst_pmdp);  in copy_pmd()
396 	dst_pmdp = pmd_offset(dst_pudp, start);  in copy_pmd()
420 	pud_t *dst_pudp;  in copy_pud()  local
426 		dst_pudp = (pud_t *)get_safe_page(GFP_ATOMIC);  in copy_pud()
427 		if (!dst_pudp)  in copy_pud()
429 		pgd_populate(&init_mm, dst_pgdp, dst_pudp);  in copy_pud()
431 	dst_pudp = pud_offset(dst_pgdp, start);  in copy_pud()
441 			if (copy_pmd(dst_pudp, src_pudp, addr, next))  in copy_pud()
444 			set_pud(dst_pudp,  in copy_pud()
447 	} while (dst_pudp++, src_pudp++, addr = next, addr != end);  in copy_pud()