2 * include/linux/pagevec.h
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.
8 #define PAGEVEC_SIZE 16
16 struct page *pages[PAGEVEC_SIZE];
19 void __pagevec_release(struct pagevec *pvec);
20 void __pagevec_release_nonlru(struct pagevec *pvec);
21 void __pagevec_free(struct pagevec *pvec);
22 void __pagevec_lru_add(struct pagevec *pvec);
23 void __pagevec_lru_add_active(struct pagevec *pvec);
24 void pagevec_strip(struct pagevec *pvec);
25 unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping,
26 pgoff_t start, unsigned nr_pages);
27 unsigned pagevec_lookup_tag(struct pagevec *pvec,
28 struct address_space *mapping, pgoff_t *index, int tag,
31 static inline void pagevec_init(struct pagevec *pvec, int cold)
37 static inline void pagevec_reinit(struct pagevec *pvec)
42 static inline unsigned pagevec_count(struct pagevec *pvec)
47 static inline unsigned pagevec_space(struct pagevec *pvec)
49 return PAGEVEC_SIZE - pvec->nr;
53 * Add a page to a pagevec. Returns the number of slots still available.
55 static inline unsigned pagevec_add(struct pagevec *pvec, struct page *page)
57 pvec->pages[pvec->nr++] = page;
58 return pagevec_space(pvec);
62 static inline void pagevec_release(struct pagevec *pvec)
64 if (pagevec_count(pvec))
65 __pagevec_release(pvec);
68 static inline void pagevec_release_nonlru(struct pagevec *pvec)
70 if (pagevec_count(pvec))
71 __pagevec_release_nonlru(pvec);
74 static inline void pagevec_free(struct pagevec *pvec)
76 if (pagevec_count(pvec))
80 static inline void pagevec_lru_add(struct pagevec *pvec)
82 if (pagevec_count(pvec))
83 __pagevec_lru_add(pvec);