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 #include "internal.h" 11 12 struct address_space *page_mapping(struct page *page) 13 { 14 return folio_mapping(page_folio(page)); 15 } 16 EXPORT_SYMBOL(page_mapping); 17 18 void unlock_page(struct page *page) 19 { 20 return folio_unlock(page_folio(page)); 21 } 22 EXPORT_SYMBOL(unlock_page); 23 24 void end_page_writeback(struct page *page) 25 { 26 return folio_end_writeback(page_folio(page)); 27 } 28 EXPORT_SYMBOL(end_page_writeback); 29 30 void wait_on_page_writeback(struct page *page) 31 { 32 return folio_wait_writeback(page_folio(page)); 33 } 34 EXPORT_SYMBOL_GPL(wait_on_page_writeback); 35 36 void wait_for_stable_page(struct page *page) 37 { 38 return folio_wait_stable(page_folio(page)); 39 } 40 EXPORT_SYMBOL_GPL(wait_for_stable_page); 41 42 bool page_mapped(struct page *page) 43 { 44 return folio_mapped(page_folio(page)); 45 } 46 EXPORT_SYMBOL(page_mapped); 47 48 void mark_page_accessed(struct page *page) 49 { 50 folio_mark_accessed(page_folio(page)); 51 } 52 EXPORT_SYMBOL(mark_page_accessed); 53 54 #ifdef CONFIG_MIGRATION 55 int migrate_page_move_mapping(struct address_space *mapping, 56 struct page *newpage, struct page *page, int extra_count) 57 { 58 return folio_migrate_mapping(mapping, page_folio(newpage), 59 page_folio(page), extra_count); 60 } 61 EXPORT_SYMBOL(migrate_page_move_mapping); 62 63 void migrate_page_states(struct page *newpage, struct page *page) 64 { 65 folio_migrate_flags(page_folio(newpage), page_folio(page)); 66 } 67 EXPORT_SYMBOL(migrate_page_states); 68 69 void migrate_page_copy(struct page *newpage, struct page *page) 70 { 71 folio_migrate_copy(page_folio(newpage), page_folio(page)); 72 } 73 EXPORT_SYMBOL(migrate_page_copy); 74 #endif 75 76 bool set_page_writeback(struct page *page) 77 { 78 return folio_start_writeback(page_folio(page)); 79 } 80 EXPORT_SYMBOL(set_page_writeback); 81 82 bool set_page_dirty(struct page *page) 83 { 84 return folio_mark_dirty(page_folio(page)); 85 } 86 EXPORT_SYMBOL(set_page_dirty); 87 88 int __set_page_dirty_nobuffers(struct page *page) 89 { 90 return filemap_dirty_folio(page_mapping(page), page_folio(page)); 91 } 92 EXPORT_SYMBOL(__set_page_dirty_nobuffers); 93 94 bool clear_page_dirty_for_io(struct page *page) 95 { 96 return folio_clear_dirty_for_io(page_folio(page)); 97 } 98 EXPORT_SYMBOL(clear_page_dirty_for_io); 99 100 bool redirty_page_for_writepage(struct writeback_control *wbc, 101 struct page *page) 102 { 103 return folio_redirty_for_writepage(wbc, page_folio(page)); 104 } 105 EXPORT_SYMBOL(redirty_page_for_writepage); 106 107 void lru_cache_add(struct page *page) 108 { 109 folio_add_lru(page_folio(page)); 110 } 111 EXPORT_SYMBOL(lru_cache_add); 112 113 int add_to_page_cache_lru(struct page *page, struct address_space *mapping, 114 pgoff_t index, gfp_t gfp) 115 { 116 return filemap_add_folio(mapping, page_folio(page), index, gfp); 117 } 118 EXPORT_SYMBOL(add_to_page_cache_lru); 119 120 noinline 121 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index, 122 int fgp_flags, gfp_t gfp) 123 { 124 struct folio *folio; 125 126 folio = __filemap_get_folio(mapping, index, fgp_flags, gfp); 127 if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio)) 128 return &folio->page; 129 return folio_file_page(folio, index); 130 } 131 EXPORT_SYMBOL(pagecache_get_page); 132 133 struct page *grab_cache_page_write_begin(struct address_space *mapping, 134 pgoff_t index, unsigned flags) 135 { 136 unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE; 137 138 if (flags & AOP_FLAG_NOFS) 139 fgp_flags |= FGP_NOFS; 140 return pagecache_get_page(mapping, index, fgp_flags, 141 mapping_gfp_mask(mapping)); 142 } 143 EXPORT_SYMBOL(grab_cache_page_write_begin); 144 145 void delete_from_page_cache(struct page *page) 146 { 147 return filemap_remove_folio(page_folio(page)); 148 } 149 150 int try_to_release_page(struct page *page, gfp_t gfp) 151 { 152 return filemap_release_folio(page_folio(page), gfp); 153 } 154 EXPORT_SYMBOL(try_to_release_page); 155 156 int isolate_lru_page(struct page *page) 157 { 158 if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page")) 159 return -EBUSY; 160 return folio_isolate_lru((struct folio *)page); 161 } 162 163 void putback_lru_page(struct page *page) 164 { 165 folio_putback_lru(page_folio(page)); 166 } 167