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b20a3503 CL |
1 | #ifndef _LINUX_MIGRATE_H |
2 | #define _LINUX_MIGRATE_H | |
3 | ||
b20a3503 | 4 | #include <linux/mm.h> |
906e0be1 | 5 | #include <linux/mempolicy.h> |
b20a3503 | 6 | |
742755a1 | 7 | typedef struct page *new_page_t(struct page *, unsigned long private, int **); |
95a402c3 | 8 | |
906e0be1 | 9 | #ifdef CONFIG_MIGRATION |
64cdd548 KM |
10 | #define PAGE_MIGRATION 1 |
11 | ||
e13861d8 | 12 | extern void putback_lru_pages(struct list_head *l); |
2d1db3b1 CL |
13 | extern int migrate_page(struct address_space *, |
14 | struct page *, struct page *); | |
62b61f61 | 15 | extern int migrate_pages(struct list_head *l, new_page_t x, |
7f0f2496 | 16 | unsigned long private, bool offlining, |
77f1fe6b | 17 | bool sync); |
290408d4 | 18 | extern int migrate_huge_pages(struct list_head *l, new_page_t x, |
7f0f2496 | 19 | unsigned long private, bool offlining, |
77f1fe6b | 20 | bool sync); |
95a402c3 | 21 | |
2d1db3b1 CL |
22 | extern int fail_migrate_page(struct address_space *, |
23 | struct page *, struct page *); | |
b20a3503 CL |
24 | |
25 | extern int migrate_prep(void); | |
748446bb | 26 | extern int migrate_prep_local(void); |
7b2259b3 CL |
27 | extern int migrate_vmas(struct mm_struct *mm, |
28 | const nodemask_t *from, const nodemask_t *to, | |
29 | unsigned long flags); | |
290408d4 NH |
30 | extern void migrate_page_copy(struct page *newpage, struct page *page); |
31 | extern int migrate_huge_page_move_mapping(struct address_space *mapping, | |
32 | struct page *newpage, struct page *page); | |
b20a3503 | 33 | #else |
64cdd548 KM |
34 | #define PAGE_MIGRATION 0 |
35 | ||
e13861d8 | 36 | static inline void putback_lru_pages(struct list_head *l) {} |
95a402c3 | 37 | static inline int migrate_pages(struct list_head *l, new_page_t x, |
7f0f2496 | 38 | unsigned long private, bool offlining, |
77f1fe6b | 39 | bool sync) { return -ENOSYS; } |
290408d4 | 40 | static inline int migrate_huge_pages(struct list_head *l, new_page_t x, |
7f0f2496 | 41 | unsigned long private, bool offlining, |
77f1fe6b | 42 | bool sync) { return -ENOSYS; } |
9bf9e89c | 43 | |
b20a3503 | 44 | static inline int migrate_prep(void) { return -ENOSYS; } |
748446bb | 45 | static inline int migrate_prep_local(void) { return -ENOSYS; } |
b20a3503 | 46 | |
7b2259b3 CL |
47 | static inline int migrate_vmas(struct mm_struct *mm, |
48 | const nodemask_t *from, const nodemask_t *to, | |
49 | unsigned long flags) | |
50 | { | |
51 | return -ENOSYS; | |
52 | } | |
53 | ||
290408d4 NH |
54 | static inline void migrate_page_copy(struct page *newpage, |
55 | struct page *page) {} | |
56 | ||
6f39ce05 | 57 | static inline int migrate_huge_page_move_mapping(struct address_space *mapping, |
290408d4 NH |
58 | struct page *newpage, struct page *page) |
59 | { | |
60 | return -ENOSYS; | |
61 | } | |
62 | ||
b20a3503 CL |
63 | /* Possible settings for the migrate_page() method in address_operations */ |
64 | #define migrate_page NULL | |
65 | #define fail_migrate_page NULL | |
66 | ||
67 | #endif /* CONFIG_MIGRATION */ | |
68 | #endif /* _LINUX_MIGRATE_H */ |