Line data    Source code

       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           0 : struct address_space *page_mapping(struct page *page)
      13             : {
      14           0 :         return folio_mapping(page_folio(page));
      15             : }
      16             : EXPORT_SYMBOL(page_mapping);
      17             : 
      18           0 : void unlock_page(struct page *page)
      19             : {
      20           0 :         return folio_unlock(page_folio(page));
      21             : }
      22             : EXPORT_SYMBOL(unlock_page);
      23             : 
      24           0 : void end_page_writeback(struct page *page)
      25             : {
      26           0 :         return folio_end_writeback(page_folio(page));
      27             : }
      28             : EXPORT_SYMBOL(end_page_writeback);
      29             : 
      30           0 : void wait_on_page_writeback(struct page *page)
      31             : {
      32           0 :         return folio_wait_writeback(page_folio(page));
      33             : }
      34             : EXPORT_SYMBOL_GPL(wait_on_page_writeback);
      35             : 
      36           0 : void wait_for_stable_page(struct page *page)
      37             : {
      38           0 :         return folio_wait_stable(page_folio(page));
      39             : }
      40             : EXPORT_SYMBOL_GPL(wait_for_stable_page);
      41             : 
      42           0 : bool page_mapped(struct page *page)
      43             : {
      44           0 :         return folio_mapped(page_folio(page));
      45             : }
      46             : EXPORT_SYMBOL(page_mapped);
      47             : 
      48           0 : void mark_page_accessed(struct page *page)
      49             : {
      50           0 :         folio_mark_accessed(page_folio(page));
      51           0 : }
      52             : EXPORT_SYMBOL(mark_page_accessed);
      53             : 
      54             : #ifdef CONFIG_MIGRATION
      55           0 : int migrate_page_move_mapping(struct address_space *mapping,
      56             :                 struct page *newpage, struct page *page, int extra_count)
      57             : {
      58           0 :         return folio_migrate_mapping(mapping, page_folio(newpage),
      59           0 :                                         page_folio(page), extra_count);
      60             : }
      61             : EXPORT_SYMBOL(migrate_page_move_mapping);
      62             : 
      63           0 : void migrate_page_states(struct page *newpage, struct page *page)
      64             : {
      65           0 :         folio_migrate_flags(page_folio(newpage), page_folio(page));
      66           0 : }
      67             : EXPORT_SYMBOL(migrate_page_states);
      68             : 
      69           0 : void migrate_page_copy(struct page *newpage, struct page *page)
      70             : {
      71           0 :         folio_migrate_copy(page_folio(newpage), page_folio(page));
      72           0 : }
      73             : EXPORT_SYMBOL(migrate_page_copy);
      74             : #endif
      75             : 
      76           0 : bool set_page_writeback(struct page *page)
      77             : {
      78           0 :         return folio_start_writeback(page_folio(page));
      79             : }
      80             : EXPORT_SYMBOL(set_page_writeback);
      81             : 
      82           0 : bool set_page_dirty(struct page *page)
      83             : {
      84           0 :         return folio_mark_dirty(page_folio(page));
      85             : }
      86             : EXPORT_SYMBOL(set_page_dirty);
      87             : 
      88           0 : int __set_page_dirty_nobuffers(struct page *page)
      89             : {
      90           0 :         return filemap_dirty_folio(page_mapping(page), page_folio(page));
      91             : }
      92             : EXPORT_SYMBOL(__set_page_dirty_nobuffers);
      93             : 
      94           0 : bool clear_page_dirty_for_io(struct page *page)
      95             : {
      96           0 :         return folio_clear_dirty_for_io(page_folio(page));
      97             : }
      98             : EXPORT_SYMBOL(clear_page_dirty_for_io);
      99             : 
     100           0 : bool redirty_page_for_writepage(struct writeback_control *wbc,
     101             :                 struct page *page)
     102             : {
     103           0 :         return folio_redirty_for_writepage(wbc, page_folio(page));
     104             : }
     105             : EXPORT_SYMBOL(redirty_page_for_writepage);
     106             : 
     107           0 : void lru_cache_add(struct page *page)
     108             : {
     109           0 :         folio_add_lru(page_folio(page));
     110           0 : }
     111             : EXPORT_SYMBOL(lru_cache_add);
     112             : 
     113           0 : int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
     114             :                 pgoff_t index, gfp_t gfp)
     115             : {
     116           0 :         return filemap_add_folio(mapping, page_folio(page), index, gfp);
     117             : }
     118             : EXPORT_SYMBOL(add_to_page_cache_lru);
     119             : 
     120             : noinline
     121           0 : 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           0 :         folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
     127           0 :         if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio))
     128           0 :                 return &folio->page;
     129           0 :         return folio_file_page(folio, index);
     130             : }
     131             : EXPORT_SYMBOL(pagecache_get_page);
     132             : 
     133           0 : struct page *grab_cache_page_write_begin(struct address_space *mapping,
     134             :                                         pgoff_t index, unsigned flags)
     135             : {
     136           0 :         unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
     137             : 
     138           0 :         if (flags & AOP_FLAG_NOFS)
     139           0 :                 fgp_flags |= FGP_NOFS;
     140           0 :         return pagecache_get_page(mapping, index, fgp_flags,
     141             :                         mapping_gfp_mask(mapping));
     142             : }
     143             : EXPORT_SYMBOL(grab_cache_page_write_begin);
     144             : 
     145           0 : void delete_from_page_cache(struct page *page)
     146             : {
     147           0 :         return filemap_remove_folio(page_folio(page));
     148             : }
     149             : 
     150           0 : int try_to_release_page(struct page *page, gfp_t gfp)
     151             : {
     152           0 :         return filemap_release_folio(page_folio(page), gfp);
     153             : }
     154             : EXPORT_SYMBOL(try_to_release_page);
     155             : 
     156           0 : int isolate_lru_page(struct page *page)
     157             : {
     158           0 :         if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
     159             :                 return -EBUSY;
     160           0 :         return folio_isolate_lru((struct folio *)page);
     161             : }
     162             : 
     163           0 : void putback_lru_page(struct page *page)
     164             : {
     165           0 :         folio_putback_lru(page_folio(page));
     166           0 : }