selftests/mm/khugepaged.c

679 	int max_ptes_none = hpage_pmd_nr / 2;
684 	settings.khugepaged.max_ptes_none = max_ptes_none;
696 	ops->fault(p, 0, (hpage_pmd_nr - max_ptes_none - fault_nr_pages) * page_size);
697 	c->collapse("Maybe collapse with max_ptes_none exceeded", p, 1,
699 	validate_memory(p, 0, (hpage_pmd_nr - max_ptes_none - fault_nr_pages) * page_size);
702 		ops->fault(p, 0, (hpage_pmd_nr - max_ptes_none) * page_size);
703 		c->collapse("Collapse with max_ptes_none PTEs empty", p, 1, ops,
706 				(hpage_pmd_nr - max_ptes_none) * page_size);
1206 	default_settings.khugepaged.max_ptes_none = hpage_pmd_nr - 1;