[thirdparty/kernel/stable.git] / include / linux / migrate.h

#ifndef _LINUX_MIGRATE_H
#define _LINUX_MIGRATE_H

#include <linux/mm.h>

typedef struct page *new_page_t(struct page *, unsigned long private, int **);

#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);

#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; }

/* 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 */
Commit	Line	Data
b20a3503 CL	1	#ifndef _LINUX_MIGRATE_H
	2	#define _LINUX_MIGRATE_H
	3
b20a3503 CL	4	#include <linux/mm.h>
b20a3503 CL	5
742755a1	6	typedef struct page new_page_t(struct page , unsigned long private, int **);
95a402c3	7
b20a3503 CL	8	#ifdef CONFIG_MIGRATION
	9	extern int isolate_lru_page(struct page p, struct list_head pagelist);
	10	extern int putback_lru_pages(struct list_head *l);
2d1db3b1 CL	11	extern int migrate_page(struct address_space *,
2d1db3b1 CL	12	struct page , struct page );
95a402c3 CL	13	extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long);
95a402c3 CL	14
2d1db3b1 CL	15	extern int fail_migrate_page(struct address_space *,
2d1db3b1 CL	16	struct page , struct page );
b20a3503 CL	17
	18	extern int migrate_prep(void);
	19
	20	#else
	21
	22	static inline int isolate_lru_page(struct page p, struct list_head list)
	23	{ return -ENOSYS; }
	24	static inline int putback_lru_pages(struct list_head *l) { return 0; }
95a402c3 CL	25	static inline int migrate_pages(struct list_head *l, new_page_t x,
95a402c3 CL	26	unsigned long private) { return -ENOSYS; }
b20a3503	27
9bf9e89c CL	28	static inline int migrate_pages_to(struct list_head *pagelist,
	29	struct vm_area_struct *vma, int dest) { return 0; }
	30
b20a3503 CL	31	static inline int migrate_prep(void) { return -ENOSYS; }
	32
	33	/* Possible settings for the migrate_page() method in address_operations */
	34	#define migrate_page NULL
	35	#define fail_migrate_page NULL
	36
	37	#endif /* CONFIG_MIGRATION */
	38	#endif /* _LINUX_MIGRATE_H */