1 /* 2 * Compatibility functions which bloat the callers too much to make inline. 3 * All of the callers of these functions should be converted to use folios 4 * eventually. 5 */ 6 7 #include <linux/migrate.h> 8 #include <linux/pagemap.h> 9 #include <linux/swap.h> 10 11 struct address_space *page_mapping(struct page *page) 12 { 13 return folio_mapping(page_folio(page)); 14 } 15 EXPORT_SYMBOL(page_mapping); 16 17 void unlock_page(struct page *page) 18 { 19 return folio_unlock(page_folio(page)); 20 } 21 EXPORT_SYMBOL(unlock_page); 22 23 void end_page_writeback(struct page *page) 24 { 25 return folio_end_writeback(page_folio(page)); 26 } 27 EXPORT_SYMBOL(end_page_writeback); 28 29 void wait_on_page_writeback(struct page *page) 30 { 31 return folio_wait_writeback(page_folio(page)); 32 } 33 EXPORT_SYMBOL_GPL(wait_on_page_writeback); 34 35 void wait_for_stable_page(struct page *page) 36 { 37 return folio_wait_stable(page_folio(page)); 38 } 39 EXPORT_SYMBOL_GPL(wait_for_stable_page); 40 41 bool page_mapped(struct page *page) 42 { 43 return folio_mapped(page_folio(page)); 44 } 45 EXPORT_SYMBOL(page_mapped); 46 47 void mark_page_accessed(struct page *page) 48 { 49 folio_mark_accessed(page_folio(page)); 50 } 51 EXPORT_SYMBOL(mark_page_accessed); 52 53 #ifdef CONFIG_MIGRATION 54 int migrate_page_move_mapping(struct address_space *mapping, 55 struct page *newpage, struct page *page, int extra_count) 56 { 57 return folio_migrate_mapping(mapping, page_folio(newpage), 58 page_folio(page), extra_count); 59 } 60 EXPORT_SYMBOL(migrate_page_move_mapping); 61 62 void migrate_page_states(struct page *newpage, struct page *page) 63 { 64 folio_migrate_flags(page_folio(newpage), page_folio(page)); 65 } 66 EXPORT_SYMBOL(migrate_page_states); 67 68 void migrate_page_copy(struct page *newpage, struct page *page) 69 { 70 folio_migrate_copy(page_folio(newpage), page_folio(page)); 71 } 72 EXPORT_SYMBOL(migrate_page_copy); 73 #endif 74 75 bool set_page_writeback(struct page *page) 76 { 77 return folio_start_writeback(page_folio(page)); 78 } 79 EXPORT_SYMBOL(set_page_writeback); 80 81 bool set_page_dirty(struct page *page) 82 { 83 return folio_mark_dirty(page_folio(page)); 84 } 85 EXPORT_SYMBOL(set_page_dirty); 86 87 int __set_page_dirty_nobuffers(struct page *page) 88 { 89 return filemap_dirty_folio(page_mapping(page), page_folio(page)); 90 } 91 EXPORT_SYMBOL(__set_page_dirty_nobuffers); 92 93 bool clear_page_dirty_for_io(struct page *page) 94 { 95 return folio_clear_dirty_for_io(page_folio(page)); 96 } 97 EXPORT_SYMBOL(clear_page_dirty_for_io); 98 99 bool redirty_page_for_writepage(struct writeback_control *wbc, 100 struct page *page) 101 { 102 return folio_redirty_for_writepage(wbc, page_folio(page)); 103 } 104 EXPORT_SYMBOL(redirty_page_for_writepage); 105 106 void lru_cache_add(struct page *page) 107 { 108 folio_add_lru(page_folio(page)); 109 } 110 EXPORT_SYMBOL(lru_cache_add); 111 112 int add_to_page_cache_lru(struct page *page, struct address_space *mapping, 113 pgoff_t index, gfp_t gfp) 114 { 115 return filemap_add_folio(mapping, page_folio(page), index, gfp); 116 } 117 EXPORT_SYMBOL(add_to_page_cache_lru); 118 119 noinline 120 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index, 121 int fgp_flags, gfp_t gfp) 122 { 123 struct folio *folio; 124 125 folio = __filemap_get_folio(mapping, index, fgp_flags, gfp); 126 if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio)) 127 return &folio->page; 128 return folio_file_page(folio, index); 129 } 130 EXPORT_SYMBOL(pagecache_get_page); 131 132 struct page *grab_cache_page_write_begin(struct address_space *mapping, 133 pgoff_t index, unsigned flags) 134 { 135 unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE; 136 137 if (flags & AOP_FLAG_NOFS) 138 fgp_flags |= FGP_NOFS; 139 return pagecache_get_page(mapping, index, fgp_flags, 140 mapping_gfp_mask(mapping)); 141 } 142 EXPORT_SYMBOL(grab_cache_page_write_begin); 143 144 void delete_from_page_cache(struct page *page) 145 { 146 return filemap_remove_folio(page_folio(page)); 147 } 148 149 int try_to_release_page(struct page *page, gfp_t gfp) 150 { 151 return filemap_release_folio(page_folio(page), gfp); 152 } 153 EXPORT_SYMBOL(try_to_release_page); 154