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
 13struct address_space *page_mapping(struct page *page)
 14{
 15	return folio_mapping(page_folio(page));
 16}
 17EXPORT_SYMBOL(page_mapping);
 18
 19void unlock_page(struct page *page)
 20{
 21	return folio_unlock(page_folio(page));
 22}
 23EXPORT_SYMBOL(unlock_page);
 24
 25void end_page_writeback(struct page *page)
 26{
 27	return folio_end_writeback(page_folio(page));
 28}
 29EXPORT_SYMBOL(end_page_writeback);
 30
 31void wait_on_page_writeback(struct page *page)
 32{
 33	return folio_wait_writeback(page_folio(page));
 34}
 35EXPORT_SYMBOL_GPL(wait_on_page_writeback);
 36
 37void wait_for_stable_page(struct page *page)
 38{
 39	return folio_wait_stable(page_folio(page));
 40}
 41EXPORT_SYMBOL_GPL(wait_for_stable_page);
 42
 43void mark_page_accessed(struct page *page)
 44{
 45	folio_mark_accessed(page_folio(page));
 46}
 47EXPORT_SYMBOL(mark_page_accessed);
 48
 49void set_page_writeback(struct page *page)
 50{
 51	folio_start_writeback(page_folio(page));
 52}
 53EXPORT_SYMBOL(set_page_writeback);
 54
 55bool set_page_dirty(struct page *page)
 56{
 57	return folio_mark_dirty(page_folio(page));
 58}
 59EXPORT_SYMBOL(set_page_dirty);
 60
 61int __set_page_dirty_nobuffers(struct page *page)
 62{
 63	return filemap_dirty_folio(page_mapping(page), page_folio(page));
 64}
 65EXPORT_SYMBOL(__set_page_dirty_nobuffers);
 66
 67bool clear_page_dirty_for_io(struct page *page)
 68{
 69	return folio_clear_dirty_for_io(page_folio(page));
 70}
 71EXPORT_SYMBOL(clear_page_dirty_for_io);
 72
 73bool redirty_page_for_writepage(struct writeback_control *wbc,
 74		struct page *page)
 75{
 76	return folio_redirty_for_writepage(wbc, page_folio(page));
 77}
 78EXPORT_SYMBOL(redirty_page_for_writepage);
 79
 80int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
 81		pgoff_t index, gfp_t gfp)
 82{
 83	return filemap_add_folio(mapping, page_folio(page), index, gfp);
 84}
 85EXPORT_SYMBOL(add_to_page_cache_lru);
 86
 87noinline
 88struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
 89		fgf_t fgp_flags, gfp_t gfp)
 90{
 91	struct folio *folio;
 92
 93	folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
 94	if (IS_ERR(folio))
 95		return NULL;
 96	return folio_file_page(folio, index);
 97}
 98EXPORT_SYMBOL(pagecache_get_page);
 99
100struct page *grab_cache_page_write_begin(struct address_space *mapping,
101					pgoff_t index)
102{
103	return pagecache_get_page(mapping, index, FGP_WRITEBEGIN,
104			mapping_gfp_mask(mapping));
105}
106EXPORT_SYMBOL(grab_cache_page_write_begin);
107
108bool isolate_lru_page(struct page *page)
109{
110	if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
111		return false;
112	return folio_isolate_lru((struct folio *)page);
113}
114
115void putback_lru_page(struct page *page)
116{
117	folio_putback_lru(page_folio(page));
118}