linux-master/mm/rmap.c

1622 	struct page *subpage;
1683 		subpage = folio_page(folio, pfn - folio_pfn(folio));
1686 				 PageAnonExclusive(subpage);
1695 			VM_BUG_ON_PAGE(!PageHWPoison(subpage), subpage);
1776 		if (PageHWPoison(subpage) && (flags & TTU_HWPOISON)) {
1777 			pteval = swp_entry_to_pte(make_hwpoison_entry(subpage));
1800 			swp_entry_t entry = page_swap_entry(subpage);
1871 			    folio_try_share_anon_rmap_pte(folio, subpage)) {
1912 			folio_remove_rmap_pte(folio, subpage, vma);
1971 	struct page *subpage;
2022 			subpage = folio_page(folio,
2027 			if (set_pmd_migration_entry(&pvmw, subpage)) {
2044 			 * calculating the subpage as for the common case would
2053 			subpage = &folio->page;
2055 			subpage = folio_page(folio, pfn - folio_pfn(folio));
2059 				 PageAnonExclusive(subpage);
2146 									   subpage));
2177 		} else if (PageHWPoison(subpage)) {
2178 			pteval = swp_entry_to_pte(make_hwpoison_entry(subpage));
2215 				       !anon_exclusive, subpage);
2228 				   folio_try_share_anon_rmap_pte(folio, subpage)) {
2242 							page_to_pfn(subpage));
2245 							page_to_pfn(subpage));
2248 							page_to_pfn(subpage));
2274 			folio_remove_rmap_pte(folio, subpage, vma);
2346 	struct page *subpage;
2370 		subpage = folio_page(folio,
2397 							page_to_pfn(subpage));
2400 							page_to_pfn(subpage));
2413 		folio_remove_rmap_pte(folio, subpage, vma);