1 #ifndef _LINUX_MIGRATE_H
2 #define _LINUX_MIGRATE_H
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
);
9 extern int migrate_page(struct address_space
*,
10 struct page
*, struct page
*);
11 extern int migrate_pages(struct list_head
*l
, struct list_head
*t
,
12 struct list_head
*moved
, struct list_head
*failed
);
13 extern int migrate_pages_to(struct list_head
*pagelist
,
14 struct vm_area_struct
*vma
, int dest
);
15 extern int fail_migrate_page(struct address_space
*,
16 struct page
*, struct page
*);
18 extern int migrate_prep(void);
22 static inline int isolate_lru_page(struct page
*p
, struct list_head
*list
)
24 static inline int putback_lru_pages(struct list_head
*l
) { return 0; }
25 static inline int migrate_pages(struct list_head
*l
, struct list_head
*t
,
26 struct list_head
*moved
, struct list_head
*failed
) { return -ENOSYS
; }
28 static inline int migrate_pages_to(struct list_head
*pagelist
,
29 struct vm_area_struct
*vma
, int dest
) { return 0; }
31 static inline int migrate_prep(void) { return -ENOSYS
; }
33 /* Possible settings for the migrate_page() method in address_operations */
34 #define migrate_page NULL
35 #define fail_migrate_page NULL
37 #endif /* CONFIG_MIGRATION */
38 #endif /* _LINUX_MIGRATE_H */
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