1 #ifndef _LINUX_MIGRATE_H
2 #define _LINUX_MIGRATE_H
6 typedef struct page
*new_page_t(struct page
*, unsigned long private, int **);
8 /* Check if a vma is migratable */
9 static inline int vma_migratable(struct vm_area_struct
*vma
)
11 if (vma
->vm_flags
& (VM_IO
|VM_HUGETLB
|VM_PFNMAP
|VM_RESERVED
))
16 #ifdef CONFIG_MIGRATION
17 extern int isolate_lru_page(struct page
*p
, struct list_head
*pagelist
);
18 extern int putback_lru_pages(struct list_head
*l
);
19 extern int migrate_page(struct address_space
*,
20 struct page
*, struct page
*);
21 extern int migrate_pages(struct list_head
*l
, new_page_t x
, unsigned long);
23 extern int fail_migrate_page(struct address_space
*,
24 struct page
*, struct page
*);
26 extern int migrate_prep(void);
27 extern int migrate_vmas(struct mm_struct
*mm
,
28 const nodemask_t
*from
, const nodemask_t
*to
,
32 static inline int isolate_lru_page(struct page
*p
, struct list_head
*list
)
34 static inline int putback_lru_pages(struct list_head
*l
) { return 0; }
35 static inline int migrate_pages(struct list_head
*l
, new_page_t x
,
36 unsigned long private) { return -ENOSYS
; }
38 static inline int migrate_pages_to(struct list_head
*pagelist
,
39 struct vm_area_struct
*vma
, int dest
) { return 0; }
41 static inline int migrate_prep(void) { return -ENOSYS
; }
43 static inline int migrate_vmas(struct mm_struct
*mm
,
44 const nodemask_t
*from
, const nodemask_t
*to
,
50 /* Possible settings for the migrate_page() method in address_operations */
51 #define migrate_page NULL
52 #define fail_migrate_page NULL
54 #endif /* CONFIG_MIGRATION */
55 #endif /* _LINUX_MIGRATE_H */