#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 #define PAGE_MIGRATION 1 extern void 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 private, int offlining); extern int fail_migrate_page(struct address_space *, struct page *, struct page *); extern int migrate_prep(void); extern int migrate_prep_local(void); extern int migrate_vmas(struct mm_struct *mm, const nodemask_t *from, const nodemask_t *to, unsigned long flags); #else #define PAGE_MIGRATION 0 static inline void putback_lru_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, int offlining) { return -ENOSYS; } static inline int migrate_prep(void) { return -ENOSYS; } static inline int migrate_prep_local(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 */