#ifndef _LINUX_MIGRATE_H #define _LINUX_MIGRATE_H #include <linux/mm.h> typedef struct page *new_page_t(struct page *, unsigned long private, int **); /* Check if a vma is migratable */ static inline int vma_migratable(struct vm_area_struct *vma) { if (vma->vm_flags & (VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED)) return 0; return 1; } #ifdef CONFIG_MIGRATION extern int isolate_lru_page(struct page *p, struct list_head *pagelist); 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 isolate_lru_page(struct page *p, struct list_head *list) { return -ENOSYS; } 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 */