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/rmap.h>
      10             : #include <linux/swap.h>
      11             : #include "internal.h"
      12             : 
      13           0 : struct address_space *page_mapping(struct page *page)
      14             : {
      15           0 :         return folio_mapping(page_folio(page));
      16             : }
      17             : EXPORT_SYMBOL(page_mapping);
      18             : 
      19           0 : void unlock_page(struct page *page)
      20             : {
      21           0 :         return folio_unlock(page_folio(page));
      22             : }
      23             : EXPORT_SYMBOL(unlock_page);
      24             : 
      25           0 : void end_page_writeback(struct page *page)
      26             : {
      27           0 :         return folio_end_writeback(page_folio(page));
      28             : }
      29             : EXPORT_SYMBOL(end_page_writeback);
      30             : 
      31           0 : void wait_on_page_writeback(struct page *page)
      32             : {
      33           0 :         return folio_wait_writeback(page_folio(page));
      34             : }
      35             : EXPORT_SYMBOL_GPL(wait_on_page_writeback);
      36             : 
      37           0 : void wait_for_stable_page(struct page *page)
      38             : {
      39           0 :         return folio_wait_stable(page_folio(page));
      40             : }
      41             : EXPORT_SYMBOL_GPL(wait_for_stable_page);
      42             : 
      43           0 : void mark_page_accessed(struct page *page)
      44             : {
      45           0 :         folio_mark_accessed(page_folio(page));
      46           0 : }
      47             : EXPORT_SYMBOL(mark_page_accessed);
      48             : 
      49           0 : bool set_page_writeback(struct page *page)
      50             : {
      51           0 :         return folio_start_writeback(page_folio(page));
      52             : }
      53             : EXPORT_SYMBOL(set_page_writeback);
      54             : 
      55           0 : bool set_page_dirty(struct page *page)
      56             : {
      57           0 :         return folio_mark_dirty(page_folio(page));
      58             : }
      59             : EXPORT_SYMBOL(set_page_dirty);
      60             : 
      61           0 : int __set_page_dirty_nobuffers(struct page *page)
      62             : {
      63           0 :         return filemap_dirty_folio(page_mapping(page), page_folio(page));
      64             : }
      65             : EXPORT_SYMBOL(__set_page_dirty_nobuffers);
      66             : 
      67           0 : bool clear_page_dirty_for_io(struct page *page)
      68             : {
      69           0 :         return folio_clear_dirty_for_io(page_folio(page));
      70             : }
      71             : EXPORT_SYMBOL(clear_page_dirty_for_io);
      72             : 
      73           0 : bool redirty_page_for_writepage(struct writeback_control *wbc,
      74             :                 struct page *page)
      75             : {
      76           0 :         return folio_redirty_for_writepage(wbc, page_folio(page));
      77             : }
      78             : EXPORT_SYMBOL(redirty_page_for_writepage);
      79             : 
      80           0 : void lru_cache_add_inactive_or_unevictable(struct page *page,
      81             :                 struct vm_area_struct *vma)
      82             : {
      83           0 :         folio_add_lru_vma(page_folio(page), vma);
      84           0 : }
      85             : 
      86           0 : int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
      87             :                 pgoff_t index, gfp_t gfp)
      88             : {
      89           0 :         return filemap_add_folio(mapping, page_folio(page), index, gfp);
      90             : }
      91             : EXPORT_SYMBOL(add_to_page_cache_lru);
      92             : 
      93             : noinline
      94           0 : struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
      95             :                 int fgp_flags, gfp_t gfp)
      96             : {
      97             :         struct folio *folio;
      98             : 
      99           0 :         folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
     100           0 :         if (!folio || xa_is_value(folio))
     101           0 :                 return &folio->page;
     102           0 :         return folio_file_page(folio, index);
     103             : }
     104             : EXPORT_SYMBOL(pagecache_get_page);
     105             : 
     106           0 : struct page *grab_cache_page_write_begin(struct address_space *mapping,
     107             :                                         pgoff_t index)
     108             : {
     109           0 :         unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
     110             : 
     111           0 :         return pagecache_get_page(mapping, index, fgp_flags,
     112             :                         mapping_gfp_mask(mapping));
     113             : }
     114             : EXPORT_SYMBOL(grab_cache_page_write_begin);
     115             : 
     116           0 : bool isolate_lru_page(struct page *page)
     117             : {
     118           0 :         if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
     119             :                 return false;
     120           0 :         return folio_isolate_lru((struct folio *)page);
     121             : }
     122             : 
     123           0 : void putback_lru_page(struct page *page)
     124             : {
     125           0 :         folio_putback_lru(page_folio(page));
     126           0 : }
     127             : 
     128             : #ifdef CONFIG_MMU
     129           0 : void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma,
     130             :                 unsigned long address)
     131             : {
     132             :         VM_BUG_ON_PAGE(PageTail(page), page);
     133             : 
     134           0 :         return folio_add_new_anon_rmap((struct folio *)page, vma, address);
     135             : }
     136             : #endif