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