linux-master/mm/memory-failure.c

918  * XXX: It is possible that a page is isolated from LRU cache,
1153  * Clean swap cache pages can be directly isolated. A later page fault will
1516 	 * but also isolated from buddy freelist, so need to identify the
2316 	 * The check (unnecessarily) ignores LRU pages being isolated and
2633 	bool isolated = false;
2636 		isolated = isolate_hugetlb(folio, pagelist);
2641 			isolated = folio_isolate_lru(folio);
2643 			isolated = isolate_movable_page(&folio->page,
2646 		if (isolated) {
2662 	return isolated;