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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 |
b20a3503 CL |
10 | extern int isolate_lru_page(struct page *p, struct list_head *pagelist); |
11 | extern int putback_lru_pages(struct list_head *l); | |
2d1db3b1 CL |
12 | extern int migrate_page(struct address_space *, |
13 | struct page *, struct page *); | |
95a402c3 CL |
14 | extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long); |
15 | ||
2d1db3b1 CL |
16 | extern int fail_migrate_page(struct address_space *, |
17 | struct page *, struct page *); | |
b20a3503 CL |
18 | |
19 | extern int migrate_prep(void); | |
7b2259b3 CL |
20 | extern int migrate_vmas(struct mm_struct *mm, |
21 | const nodemask_t *from, const nodemask_t *to, | |
22 | unsigned long flags); | |
b20a3503 | 23 | #else |
b20a3503 CL |
24 | static inline int isolate_lru_page(struct page *p, struct list_head *list) |
25 | { return -ENOSYS; } | |
26 | static inline int putback_lru_pages(struct list_head *l) { return 0; } | |
95a402c3 CL |
27 | static inline int migrate_pages(struct list_head *l, new_page_t x, |
28 | unsigned long private) { return -ENOSYS; } | |
b20a3503 | 29 | |
9bf9e89c CL |
30 | static inline int migrate_pages_to(struct list_head *pagelist, |
31 | struct vm_area_struct *vma, int dest) { return 0; } | |
32 | ||
b20a3503 CL |
33 | static inline int migrate_prep(void) { return -ENOSYS; } |
34 | ||
7b2259b3 CL |
35 | static inline int migrate_vmas(struct mm_struct *mm, |
36 | const nodemask_t *from, const nodemask_t *to, | |
37 | unsigned long flags) | |
38 | { | |
39 | return -ENOSYS; | |
40 | } | |
41 | ||
b20a3503 CL |
42 | /* Possible settings for the migrate_page() method in address_operations */ |
43 | #define migrate_page NULL | |
44 | #define fail_migrate_page NULL | |
45 | ||
46 | #endif /* CONFIG_MIGRATION */ | |
47 | #endif /* _LINUX_MIGRATE_H */ |