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