linux-master/mm/pagewalk.c

27 	int err = 0;
30 		err = ops->pte_entry(pte, addr, addr + PAGE_SIZE, walk);
31 		if (err)
38 	return err;
45 	int err = 0;
60 			err = walk_pte_range_inner(pte, addr, end, walk);
67 			err = walk_pte_range_inner(pte, addr, end, walk);
73 	return err;
80 	int err = 0;
96 		err = ops->pte_entry(pte, addr, addr + page_size, walk);
99 		if (err)
105 	return err;
121 	int err = 0;
130 				err = ops->pte_hole(addr, next, depth, walk);
131 			if (err)
143 			err = ops->pmd_entry(pmd, addr, next, walk);
144 		if (err)
163 			err = walk_hugepd_range((hugepd_t *)pmd, addr, next, walk, PMD_SHIFT);
165 			err = walk_pte_range(pmd, addr, next, walk);
166 		if (err)
174 	return err;
183 	int err = 0;
192 				err = ops->pte_hole(addr, next, depth, walk);
193 			if (err)
201 			err = ops->pud_entry(pud, addr, next, walk);
202 		if (err)
219 			err = walk_hugepd_range((hugepd_t *)pud, addr, next, walk, PUD_SHIFT);
221 			err = walk_pmd_range(pud, addr, next, walk);
222 		if (err)
226 	return err;
235 	int err = 0;
243 				err = ops->pte_hole(addr, next, depth, walk);
244 			if (err)
249 			err = ops->p4d_entry(p4d, addr, next, walk);
250 			if (err)
254 			err = walk_hugepd_range((hugepd_t *)p4d, addr, next, walk, P4D_SHIFT);
256 			err = walk_pud_range(p4d, addr, next, walk);
257 		if (err)
261 	return err;
270 	int err = 0;
280 				err = ops->pte_hole(addr, next, 0, walk);
281 			if (err)
286 			err = ops->pgd_entry(pgd, addr, next, walk);
287 			if (err)
291 			err = walk_hugepd_range((hugepd_t *)pgd, addr, next, walk, PGDIR_SHIFT);
293 			err = walk_p4d_range(pgd, addr, next, walk);
294 		if (err)
298 	return err;
319 	int err = 0;
326 			err = ops->hugetlb_entry(pte, hmask, addr, next, walk);
328 			err = ops->pte_hole(addr, next, -1, walk);
329 		if (err)
334 	return err;
370 		int err = 1;
372 			err = ops->pte_hole(start, end, -1, walk);
373 		return err ? err : 1;
381 	int err = 0;
386 		err = ops->pre_vma(start, end, walk);
387 		if (err)
388 			return err;
393 			err = walk_hugetlb_range(start, end, walk);
395 		err = walk_pgd_range(start, end, walk);
400 	return err;
474 	int err = 0;
497 				err = ops->pte_hole(start, next, -1, &walk);
502 				err = ops->pte_hole(start, next, -1, &walk);
509 			err = walk_page_test(start, next, &walk);
510 			if (err > 0) {
516 				err = 0;
519 			if (err < 0)
521 			err = __walk_page_range(start, next, &walk);
523 		if (err)
526 	return err;
671 	int err = 0;
692 		err = walk_page_test(vma->vm_start, vma->vm_end, &walk);
693 		if (err > 0) {
694 			err = 0;
696 		} else if (err < 0)
699 		err = __walk_page_range(start_addr, end_addr, &walk);
700 		if (err)
704 	return err;