606 	int none_or_zero = 0, shared = 0, result = 0, referenced = 0;  in __collapse_huge_page_isolate()  local
618 				result = SCAN_EXCEED_NONE_PTE;  in __collapse_huge_page_isolate()
623 			result = SCAN_PTE_NON_PRESENT;  in __collapse_huge_page_isolate()
628 			result = SCAN_PAGE_NULL;  in __collapse_huge_page_isolate()
636 			result = SCAN_EXCEED_SHARED_PTE;  in __collapse_huge_page_isolate()
661 			result = SCAN_PAGE_LOCK;  in __collapse_huge_page_isolate()
678 			result = SCAN_PAGE_COUNT;  in __collapse_huge_page_isolate()
688 			result = SCAN_SWAP_CACHE_PAGE;  in __collapse_huge_page_isolate()
698 			result = SCAN_DEL_PAGE_LRU;  in __collapse_huge_page_isolate()
721 		result = SCAN_PAGE_RO;  in __collapse_huge_page_isolate()
723 		result = SCAN_LACK_REFERENCED_PAGE;  in __collapse_huge_page_isolate()
725 		result = SCAN_SUCCEED;  in __collapse_huge_page_isolate()
727 						    referenced, writable, result);  in __collapse_huge_page_isolate()
733 					    referenced, writable, result);  in __collapse_huge_page_isolate()
1070 	int isolated = 0, result = 0;  in collapse_huge_page()  local
1089 		result = SCAN_ALLOC_HUGE_PAGE_FAIL;  in collapse_huge_page()
1094 		result = SCAN_CGROUP_CHARGE_FAIL;  in collapse_huge_page()
1100 	result = hugepage_vma_revalidate(mm, address, &vma);  in collapse_huge_page()
1101 	if (result) {  in collapse_huge_page()
1108 		result = SCAN_PMD_NULL;  in collapse_huge_page()
1131 	result = hugepage_vma_revalidate(mm, address, &vma);  in collapse_huge_page()
1132 	if (result)  in collapse_huge_page()
1180 		result = SCAN_FAIL;  in collapse_huge_page()
1219 	result = SCAN_SUCCEED;  in collapse_huge_page()
1225 	trace_mm_collapse_huge_page(mm, isolated, result);  in collapse_huge_page()
1238 	int ret = 0, result = 0, referenced = 0;  in khugepaged_scan_pmd()  local
1250 		result = SCAN_PMD_NULL;  in khugepaged_scan_pmd()
1267 					result = SCAN_PTE_UFFD_WP;  in khugepaged_scan_pmd()
1272 				result = SCAN_EXCEED_SWAP_PTE;  in khugepaged_scan_pmd()
1281 				result = SCAN_EXCEED_NONE_PTE;  in khugepaged_scan_pmd()
1286 			result = SCAN_PTE_NON_PRESENT;  in khugepaged_scan_pmd()
1299 			result = SCAN_PTE_UFFD_WP;  in khugepaged_scan_pmd()
1307 			result = SCAN_PAGE_NULL;  in khugepaged_scan_pmd()
1313 			result = SCAN_EXCEED_SHARED_PTE;  in khugepaged_scan_pmd()
1327 			result = SCAN_SCAN_ABORT;  in khugepaged_scan_pmd()
1332 			result = SCAN_PAGE_LRU;  in khugepaged_scan_pmd()
1336 			result = SCAN_PAGE_LOCK;  in khugepaged_scan_pmd()
1340 			result = SCAN_PAGE_ANON;  in khugepaged_scan_pmd()
1362 			result = SCAN_PAGE_COUNT;  in khugepaged_scan_pmd()
1371 		result = SCAN_PAGE_RO;  in khugepaged_scan_pmd()
1373 		result = SCAN_LACK_REFERENCED_PAGE;  in khugepaged_scan_pmd()
1375 		result = SCAN_SUCCEED;  in khugepaged_scan_pmd()
1388 				     none_or_zero, result, unmapped);  in khugepaged_scan_pmd()
1694 	int nr_none = 0, result = SCAN_SUCCEED;  in collapse_file()  local
1705 		result = SCAN_ALLOC_HUGE_PAGE_FAIL;  in collapse_file()
1710 		result = SCAN_CGROUP_CHARGE_FAIL;  in collapse_file()
1723 			result = SCAN_FAIL;  in collapse_file()
1754 						result = SCAN_TRUNCATED;  in collapse_file()
1760 					result = SCAN_FAIL;  in collapse_file()
1773 					result = SCAN_FAIL;  in collapse_file()
1780 				result = SCAN_PAGE_LOCK;  in collapse_file()
1793 					result = SCAN_FAIL;  in collapse_file()
1812 				result = SCAN_FAIL;  in collapse_file()
1816 				result = SCAN_FAIL;  in collapse_file()
1822 				result = SCAN_PAGE_LOCK;  in collapse_file()
1835 			result = SCAN_FAIL;  in collapse_file()
1844 			result = SCAN_PAGE_COMPOUND;  in collapse_file()
1849 			result = SCAN_TRUNCATED;  in collapse_file()
1860 			result = SCAN_FAIL;  in collapse_file()
1865 			result = SCAN_DEL_PAGE_LRU;  in collapse_file()
1871 			result = SCAN_PAGE_HAS_PRIVATE;  in collapse_file()
1892 			result = SCAN_PAGE_COUNT;  in collapse_file()
1926 			result = SCAN_FAIL;  in collapse_file()
1943 	if (result == SCAN_SUCCEED) {  in collapse_file()
2042 	int result = SCAN_SUCCEED;  in khugepaged_scan_file()  local
2054 				result = SCAN_EXCEED_SWAP_PTE;  in khugepaged_scan_file()
2061 			result = SCAN_PAGE_COMPOUND;  in khugepaged_scan_file()
2067 			result = SCAN_SCAN_ABORT;  in khugepaged_scan_file()
2073 			result = SCAN_PAGE_LRU;  in khugepaged_scan_file()
2079 			result = SCAN_PAGE_COUNT;  in khugepaged_scan_file()
2098 	if (result == SCAN_SUCCEED) {  in khugepaged_scan_file()
2100 			result = SCAN_EXCEED_NONE_PTE;  in khugepaged_scan_file()