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mm: get rid of pagevec_release_nonlru()
[mirror_ubuntu-bionic-kernel.git] / include / linux / pagevec.h
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1/*
2 * include/linux/pagevec.h
3 *
4 * In many places it is efficient to batch an operation up against multiple
5 * pages. A pagevec is a multipage container which is used for that.
6 */
7
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8#ifndef _LINUX_PAGEVEC_H
9#define _LINUX_PAGEVEC_H
10
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11/* 14 pointers + two long's align the pagevec structure to a power of two */
12#define PAGEVEC_SIZE 14
13
14struct page;
15struct address_space;
16
17struct pagevec {
18 unsigned long nr;
19 unsigned long cold;
20 struct page *pages[PAGEVEC_SIZE];
21};
22
23void __pagevec_release(struct pagevec *pvec);
1da177e4 24void __pagevec_free(struct pagevec *pvec);
f04e9ebb 25void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru);
1da177e4 26void pagevec_strip(struct pagevec *pvec);
68a22394 27void pagevec_swap_free(struct pagevec *pvec);
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28unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping,
29 pgoff_t start, unsigned nr_pages);
30unsigned pagevec_lookup_tag(struct pagevec *pvec,
31 struct address_space *mapping, pgoff_t *index, int tag,
32 unsigned nr_pages);
33
34static inline void pagevec_init(struct pagevec *pvec, int cold)
35{
36 pvec->nr = 0;
37 pvec->cold = cold;
38}
39
40static inline void pagevec_reinit(struct pagevec *pvec)
41{
42 pvec->nr = 0;
43}
44
45static inline unsigned pagevec_count(struct pagevec *pvec)
46{
47 return pvec->nr;
48}
49
50static inline unsigned pagevec_space(struct pagevec *pvec)
51{
52 return PAGEVEC_SIZE - pvec->nr;
53}
54
55/*
56 * Add a page to a pagevec. Returns the number of slots still available.
57 */
58static inline unsigned pagevec_add(struct pagevec *pvec, struct page *page)
59{
60 pvec->pages[pvec->nr++] = page;
61 return pagevec_space(pvec);
62}
63
64
65static inline void pagevec_release(struct pagevec *pvec)
66{
67 if (pagevec_count(pvec))
68 __pagevec_release(pvec);
69}
70
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71static inline void pagevec_free(struct pagevec *pvec)
72{
73 if (pagevec_count(pvec))
74 __pagevec_free(pvec);
75}
76
4f98a2fe 77static inline void __pagevec_lru_add_anon(struct pagevec *pvec)
f04e9ebb 78{
4f98a2fe 79 ____pagevec_lru_add(pvec, LRU_INACTIVE_ANON);
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80}
81
4f98a2fe 82static inline void __pagevec_lru_add_active_anon(struct pagevec *pvec)
f04e9ebb 83{
4f98a2fe 84 ____pagevec_lru_add(pvec, LRU_ACTIVE_ANON);
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85}
86
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87static inline void __pagevec_lru_add_file(struct pagevec *pvec)
88{
89 ____pagevec_lru_add(pvec, LRU_INACTIVE_FILE);
90}
91
92static inline void __pagevec_lru_add_active_file(struct pagevec *pvec)
93{
94 ____pagevec_lru_add(pvec, LRU_ACTIVE_FILE);
95}
96
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97static inline void pagevec_lru_add_file(struct pagevec *pvec)
98{
99 if (pagevec_count(pvec))
100 __pagevec_lru_add_file(pvec);
101}
102
103static inline void pagevec_lru_add_anon(struct pagevec *pvec)
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104{
105 if (pagevec_count(pvec))
4f98a2fe 106 __pagevec_lru_add_anon(pvec);
1da177e4 107}
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108
109#endif /* _LINUX_PAGEVEC_H */