1 #ifndef _LINUX_MIGRATE_H
2 #define _LINUX_MIGRATE_H
5 #include <linux/mempolicy.h>
7 typedef struct page
*new_page_t(struct page
*, unsigned long private, int **);
9 #ifdef CONFIG_MIGRATION
10 #define PAGE_MIGRATION 1
12 extern void putback_lru_pages(struct list_head
*l
);
13 extern int migrate_page(struct address_space
*,
14 struct page
*, struct page
*);
15 extern int migrate_pages(struct list_head
*l
, new_page_t x
,
16 unsigned long private, bool offlining
,
18 extern int migrate_huge_pages(struct list_head
*l
, new_page_t x
,
19 unsigned long private, bool offlining
,
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
);
34 #define PAGE_MIGRATION 0
36 static inline void putback_lru_pages(struct list_head
*l
) {}
37 static inline int migrate_pages(struct list_head
*l
, new_page_t x
,
38 unsigned long private, bool offlining
,
39 bool sync
) { return -ENOSYS
; }
40 static inline int migrate_huge_pages(struct list_head
*l
, new_page_t x
,
41 unsigned long private, bool offlining
,
42 bool sync
) { return -ENOSYS
; }
44 static inline int migrate_prep(void) { return -ENOSYS
; }
45 static inline int migrate_prep_local(void) { return -ENOSYS
; }
47 static inline int migrate_vmas(struct mm_struct
*mm
,
48 const nodemask_t
*from
, const nodemask_t
*to
,
54 static inline void migrate_page_copy(struct page
*newpage
,
57 static inline int migrate_huge_page_move_mapping(struct address_space
*mapping
,
58 struct page
*newpage
, struct page
*page
)
63 /* Possible settings for the migrate_page() method in address_operations */
64 #define migrate_page NULL
65 #define fail_migrate_page NULL
67 #endif /* CONFIG_MIGRATION */
68 #endif /* _LINUX_MIGRATE_H */
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