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