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
page_mapping(struct page * page)12 struct address_space *page_mapping(struct page *page)
13 {
14 return folio_mapping(page_folio(page));
15 }
16 EXPORT_SYMBOL(page_mapping);
17
unlock_page(struct page * page)18 void unlock_page(struct page *page)
19 {
20 return folio_unlock(page_folio(page));
21 }
22 EXPORT_SYMBOL(unlock_page);
23
end_page_writeback(struct page * page)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
wait_on_page_writeback(struct page * page)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
wait_for_stable_page(struct page * page)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
page_mapped(struct page * page)42 bool page_mapped(struct page *page)
43 {
44 return folio_mapped(page_folio(page));
45 }
46 EXPORT_SYMBOL(page_mapped);
47
mark_page_accessed(struct page * page)48 void mark_page_accessed(struct page *page)
49 {
50 folio_mark_accessed(page_folio(page));
51 }
52 EXPORT_SYMBOL(mark_page_accessed);
53
set_page_writeback(struct page * page)54 bool set_page_writeback(struct page *page)
55 {
56 return folio_start_writeback(page_folio(page));
57 }
58 EXPORT_SYMBOL(set_page_writeback);
59
set_page_dirty(struct page * page)60 bool set_page_dirty(struct page *page)
61 {
62 return folio_mark_dirty(page_folio(page));
63 }
64 EXPORT_SYMBOL(set_page_dirty);
65
__set_page_dirty_nobuffers(struct page * page)66 int __set_page_dirty_nobuffers(struct page *page)
67 {
68 return filemap_dirty_folio(page_mapping(page), page_folio(page));
69 }
70 EXPORT_SYMBOL(__set_page_dirty_nobuffers);
71
clear_page_dirty_for_io(struct page * page)72 bool clear_page_dirty_for_io(struct page *page)
73 {
74 return folio_clear_dirty_for_io(page_folio(page));
75 }
76 EXPORT_SYMBOL(clear_page_dirty_for_io);
77
redirty_page_for_writepage(struct writeback_control * wbc,struct page * page)78 bool redirty_page_for_writepage(struct writeback_control *wbc,
79 struct page *page)
80 {
81 return folio_redirty_for_writepage(wbc, page_folio(page));
82 }
83 EXPORT_SYMBOL(redirty_page_for_writepage);
84
lru_cache_add(struct page * page)85 void lru_cache_add(struct page *page)
86 {
87 folio_add_lru(page_folio(page));
88 }
89 EXPORT_SYMBOL(lru_cache_add);
90
lru_cache_add_inactive_or_unevictable(struct page * page,struct vm_area_struct * vma)91 void lru_cache_add_inactive_or_unevictable(struct page *page,
92 struct vm_area_struct *vma)
93 {
94 folio_add_lru_vma(page_folio(page), vma);
95 }
96
add_to_page_cache_lru(struct page * page,struct address_space * mapping,pgoff_t index,gfp_t gfp)97 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
98 pgoff_t index, gfp_t gfp)
99 {
100 return filemap_add_folio(mapping, page_folio(page), index, gfp);
101 }
102 EXPORT_SYMBOL(add_to_page_cache_lru);
103
104 noinline
pagecache_get_page(struct address_space * mapping,pgoff_t index,int fgp_flags,gfp_t gfp)105 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
106 int fgp_flags, gfp_t gfp)
107 {
108 struct folio *folio;
109
110 folio = __filemap_get_folio(mapping, index, fgp_flags, gfp);
111 if ((fgp_flags & FGP_HEAD) || !folio || xa_is_value(folio))
112 return &folio->page;
113 return folio_file_page(folio, index);
114 }
115 EXPORT_SYMBOL(pagecache_get_page);
116
grab_cache_page_write_begin(struct address_space * mapping,pgoff_t index)117 struct page *grab_cache_page_write_begin(struct address_space *mapping,
118 pgoff_t index)
119 {
120 unsigned fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE;
121
122 return pagecache_get_page(mapping, index, fgp_flags,
123 mapping_gfp_mask(mapping));
124 }
125 EXPORT_SYMBOL(grab_cache_page_write_begin);
126
delete_from_page_cache(struct page * page)127 void delete_from_page_cache(struct page *page)
128 {
129 return filemap_remove_folio(page_folio(page));
130 }
131
try_to_release_page(struct page * page,gfp_t gfp)132 int try_to_release_page(struct page *page, gfp_t gfp)
133 {
134 return filemap_release_folio(page_folio(page), gfp);
135 }
136 EXPORT_SYMBOL(try_to_release_page);
137
isolate_lru_page(struct page * page)138 int isolate_lru_page(struct page *page)
139 {
140 if (WARN_RATELIMIT(PageTail(page), "trying to isolate tail page"))
141 return -EBUSY;
142 return folio_isolate_lru((struct folio *)page);
143 }
144
putback_lru_page(struct page * page)145 void putback_lru_page(struct page *page)
146 {
147 folio_putback_lru(page_folio(page));
148 }
149