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 */