| #ifndef _LINUX_MIGRATE_H |
| #define _LINUX_MIGRATE_H |
| |
| #include <linux/mm.h> |
| #include <linux/mempolicy.h> |
| |
| typedef struct page *new_page_t(struct page *, unsigned long private, int **); |
| |
| #ifdef CONFIG_MIGRATION |
| extern int putback_lru_pages(struct list_head *l); |
| extern int migrate_page(struct address_space *, |
| struct page *, struct page *); |
| extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long); |
| |
| extern int fail_migrate_page(struct address_space *, |
| struct page *, struct page *); |
| |
| extern int migrate_prep(void); |
| extern int migrate_vmas(struct mm_struct *mm, |
| const nodemask_t *from, const nodemask_t *to, |
| unsigned long flags); |
| #else |
| static inline int putback_lru_pages(struct list_head *l) { return 0; } |
| static inline int migrate_pages(struct list_head *l, new_page_t x, |
| unsigned long private) { return -ENOSYS; } |
| |
| static inline int migrate_pages_to(struct list_head *pagelist, |
| struct vm_area_struct *vma, int dest) { return 0; } |
| |
| static inline int migrate_prep(void) { return -ENOSYS; } |
| |
| static inline int migrate_vmas(struct mm_struct *mm, |
| const nodemask_t *from, const nodemask_t *to, |
| unsigned long flags) |
| { |
| return -ENOSYS; |
| } |
| |
| /* Possible settings for the migrate_page() method in address_operations */ |
| #define migrate_page NULL |
| #define fail_migrate_page NULL |
| |
| #endif /* CONFIG_MIGRATION */ |
| #endif /* _LINUX_MIGRATE_H */ |