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Commit | Line | Data |
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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 HD |
15 | extern int migrate_pages(struct list_head *l, new_page_t x, |
16 | unsigned long private, int offlining); | |
290408d4 NH |
17 | extern int migrate_huge_pages(struct list_head *l, new_page_t x, |
18 | unsigned long private, int offlining); | |
95a402c3 | 19 | |
2d1db3b1 CL |
20 | extern int fail_migrate_page(struct address_space *, |
21 | struct page *, struct page *); | |
b20a3503 CL |
22 | |
23 | extern int migrate_prep(void); | |
748446bb | 24 | extern int migrate_prep_local(void); |
7b2259b3 CL |
25 | extern int migrate_vmas(struct mm_struct *mm, |
26 | const nodemask_t *from, const nodemask_t *to, | |
27 | unsigned long flags); | |
290408d4 NH |
28 | extern void migrate_page_copy(struct page *newpage, struct page *page); |
29 | extern int migrate_huge_page_move_mapping(struct address_space *mapping, | |
30 | struct page *newpage, struct page *page); | |
b20a3503 | 31 | #else |
64cdd548 KM |
32 | #define PAGE_MIGRATION 0 |
33 | ||
e13861d8 | 34 | static inline void putback_lru_pages(struct list_head *l) {} |
95a402c3 | 35 | static inline int migrate_pages(struct list_head *l, new_page_t x, |
62b61f61 | 36 | unsigned long private, int offlining) { return -ENOSYS; } |
290408d4 NH |
37 | static inline int migrate_huge_pages(struct list_head *l, new_page_t x, |
38 | unsigned long private, int offlining) { return -ENOSYS; } | |
9bf9e89c | 39 | |
b20a3503 | 40 | static inline int migrate_prep(void) { return -ENOSYS; } |
748446bb | 41 | static inline int migrate_prep_local(void) { return -ENOSYS; } |
b20a3503 | 42 | |
7b2259b3 CL |
43 | static inline int migrate_vmas(struct mm_struct *mm, |
44 | const nodemask_t *from, const nodemask_t *to, | |
45 | unsigned long flags) | |
46 | { | |
47 | return -ENOSYS; | |
48 | } | |
49 | ||
290408d4 NH |
50 | static inline void migrate_page_copy(struct page *newpage, |
51 | struct page *page) {} | |
52 | ||
6f39ce05 | 53 | static inline int migrate_huge_page_move_mapping(struct address_space *mapping, |
290408d4 NH |
54 | struct page *newpage, struct page *page) |
55 | { | |
56 | return -ENOSYS; | |
57 | } | |
58 | ||
b20a3503 CL |
59 | /* Possible settings for the migrate_page() method in address_operations */ |
60 | #define migrate_page NULL | |
61 | #define fail_migrate_page NULL | |
62 | ||
63 | #endif /* CONFIG_MIGRATION */ | |
64 | #endif /* _LINUX_MIGRATE_H */ |