Merge tag 'sh-for-v6.6-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubit...
[platform/kernel/linux-rpi.git] / mm / folio-compat.c
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 struct address_space *page_mapping(struct page *page)
14 {
15         return folio_mapping(page_folio(page));
16 }
17 EXPORT_SYMBOL(page_mapping);
18
19 void unlock_page(struct page *page)
20 {
21         return folio_unlock(page_folio(page));
22 }
23 EXPORT_SYMBOL(unlock_page);
24
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
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
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
43 void mark_page_accessed(struct page *page)
44 {
45         folio_mark_accessed(page_folio(page));
46 }
47 EXPORT_SYMBOL(mark_page_accessed);
48
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
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
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
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
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
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
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
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
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
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
121 void putback_lru_page(struct page *page)
122 {
123         folio_putback_lru(page_folio(page));
124 }
125
126 #ifdef CONFIG_MMU
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