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
page_mapping(struct page * page)11 struct address_space *page_mapping(struct page *page)
12 {
13 return folio_mapping(page_folio(page));
14 }
15 EXPORT_SYMBOL(page_mapping);
16
unlock_page(struct page * page)17 void unlock_page(struct page *page)
18 {
19 return folio_unlock(page_folio(page));
20 }
21 EXPORT_SYMBOL(unlock_page);
22
end_page_writeback(struct page * page)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
wait_on_page_writeback(struct page * page)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
wait_for_stable_page(struct page * page)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
page_mapped(struct page * page)41 bool page_mapped(struct page *page)
42 {
43 return folio_mapped(page_folio(page));
44 }
45 EXPORT_SYMBOL(page_mapped);
46
mark_page_accessed(struct page * page)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
migrate_page_move_mapping(struct address_space * mapping,struct page * newpage,struct page * page,int extra_count)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
migrate_page_states(struct page * newpage,struct page * page)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
migrate_page_copy(struct page * newpage,struct page * page)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
set_page_writeback(struct page * page)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
set_page_dirty(struct page * page)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
__set_page_dirty_nobuffers(struct page * page)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
clear_page_dirty_for_io(struct page * page)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
redirty_page_for_writepage(struct writeback_control * wbc,struct page * page)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
lru_cache_add(struct page * page)106 void lru_cache_add(struct page *page)
107 {
108 folio_add_lru(page_folio(page));
109 }
110 EXPORT_SYMBOL(lru_cache_add);
111
add_to_page_cache_lru(struct page * page,struct address_space * mapping,pgoff_t index,gfp_t gfp)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
pagecache_get_page(struct address_space * mapping,pgoff_t index,int fgp_flags,gfp_t gfp)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
grab_cache_page_write_begin(struct address_space * mapping,pgoff_t index,unsigned flags)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