1 #ifndef _LINUX_MIGRATE_H
2 #define _LINUX_MIGRATE_H
5 #include <linux/mempolicy.h>
6 #include <linux/migrate_mode.h>
8 typedef struct page
*new_page_t(struct page
*, unsigned long private, int **);
10 #ifdef CONFIG_MIGRATION
12 extern void putback_lru_pages(struct list_head
*l
);
13 extern int migrate_page(struct address_space
*,
14 struct page
*, struct page
*, enum migrate_mode
);
15 extern int migrate_pages(struct list_head
*l
, new_page_t x
,
16 unsigned long private, bool offlining
,
17 enum migrate_mode mode
);
18 extern int migrate_huge_pages(struct list_head
*l
, new_page_t x
,
19 unsigned long private, bool offlining
,
20 enum migrate_mode mode
);
22 extern int fail_migrate_page(struct address_space
*,
23 struct page
*, struct page
*);
25 extern int migrate_prep(void);
26 extern int migrate_prep_local(void);
27 extern int migrate_vmas(struct mm_struct
*mm
,
28 const nodemask_t
*from
, const nodemask_t
*to
,
30 extern void migrate_page_copy(struct page
*newpage
, struct page
*page
);
31 extern int migrate_huge_page_move_mapping(struct address_space
*mapping
,
32 struct page
*newpage
, struct page
*page
);
35 static inline void putback_lru_pages(struct list_head
*l
) {}
36 static inline int migrate_pages(struct list_head
*l
, new_page_t x
,
37 unsigned long private, bool offlining
,
38 enum migrate_mode mode
) { return -ENOSYS
; }
39 static inline int migrate_huge_pages(struct list_head
*l
, new_page_t x
,
40 unsigned long private, bool offlining
,
41 enum migrate_mode mode
) { return -ENOSYS
; }
43 static inline int migrate_prep(void) { return -ENOSYS
; }
44 static inline int migrate_prep_local(void) { return -ENOSYS
; }
46 static inline int migrate_vmas(struct mm_struct
*mm
,
47 const nodemask_t
*from
, const nodemask_t
*to
,
53 static inline void migrate_page_copy(struct page
*newpage
,
56 static inline int migrate_huge_page_move_mapping(struct address_space
*mapping
,
57 struct page
*newpage
, struct page
*page
)
62 /* Possible settings for the migrate_page() method in address_operations */
63 #define migrate_page NULL
64 #define fail_migrate_page NULL
66 #endif /* CONFIG_MIGRATION */
67 #endif /* _LINUX_MIGRATE_H */