Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _LINUX_MIGRATE_H
2#define _LINUX_MIGRATE_H
3
4#include <linux/mm.h>
5
6typedef struct page *new_page_t(struct page *, unsigned long private, int **);
7
8#ifdef CONFIG_MIGRATION
9extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
10extern int putback_lru_pages(struct list_head *l);
11extern int migrate_page(struct address_space *,
12 struct page *, struct page *);
13extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long);
14
15extern int fail_migrate_page(struct address_space *,
16 struct page *, struct page *);
17
18extern int migrate_prep(void);
19extern int migrate_vmas(struct mm_struct *mm,
20 const nodemask_t *from, const nodemask_t *to,
21 unsigned long flags);
22#else
23
24static inline int isolate_lru_page(struct page *p, struct list_head *list)
25 { return -ENOSYS; }
26static inline int putback_lru_pages(struct list_head *l) { return 0; }
27static inline int migrate_pages(struct list_head *l, new_page_t x,
28 unsigned long private) { return -ENOSYS; }
29
30static inline int migrate_pages_to(struct list_head *pagelist,
31 struct vm_area_struct *vma, int dest) { return 0; }
32
33static inline int migrate_prep(void) { return -ENOSYS; }
34
35static inline int migrate_vmas(struct mm_struct *mm,
36 const nodemask_t *from, const nodemask_t *to,
37 unsigned long flags)
38{
39 return -ENOSYS;
40}
41
42/* Possible settings for the migrate_page() method in address_operations */
43#define migrate_page NULL
44#define fail_migrate_page NULL
45
46#endif /* CONFIG_MIGRATION */
47#endif /* _LINUX_MIGRATE_H */