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b20a3503 CL |
1 | #ifndef _LINUX_MIGRATE_H |
2 | #define _LINUX_MIGRATE_H | |
3 | ||
b20a3503 CL |
4 | #include <linux/mm.h> |
5 | ||
6 | #ifdef CONFIG_MIGRATION | |
7 | extern int isolate_lru_page(struct page *p, struct list_head *pagelist); | |
8 | extern int putback_lru_pages(struct list_head *l); | |
2d1db3b1 CL |
9 | extern int migrate_page(struct address_space *, |
10 | struct page *, struct page *); | |
aaa994b3 | 11 | extern int migrate_pages(struct list_head *l, struct list_head *t); |
9bf9e89c | 12 | extern int migrate_pages_to(struct list_head *pagelist, |
b20a3503 | 13 | struct vm_area_struct *vma, int dest); |
2d1db3b1 CL |
14 | extern int fail_migrate_page(struct address_space *, |
15 | struct page *, struct page *); | |
b20a3503 CL |
16 | |
17 | extern int migrate_prep(void); | |
18 | ||
19 | #else | |
20 | ||
21 | static inline int isolate_lru_page(struct page *p, struct list_head *list) | |
22 | { return -ENOSYS; } | |
23 | static inline int putback_lru_pages(struct list_head *l) { return 0; } | |
aaa994b3 CL |
24 | static inline int migrate_pages(struct list_head *l, struct list_head *t) |
25 | { return -ENOSYS; } | |
b20a3503 | 26 | |
9bf9e89c CL |
27 | static inline int migrate_pages_to(struct list_head *pagelist, |
28 | struct vm_area_struct *vma, int dest) { return 0; } | |
29 | ||
b20a3503 CL |
30 | static inline int migrate_prep(void) { return -ENOSYS; } |
31 | ||
32 | /* Possible settings for the migrate_page() method in address_operations */ | |
33 | #define migrate_page NULL | |
34 | #define fail_migrate_page NULL | |
35 | ||
36 | #endif /* CONFIG_MIGRATION */ | |
37 | #endif /* _LINUX_MIGRATE_H */ |