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
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
23static inline int putback_lru_pages(struct list_head *l) { return 0; }
24static inline int migrate_pages(struct list_head *l, new_page_t x,
25 unsigned long private) { return -ENOSYS; }
26
27static inline int migrate_pages_to(struct list_head *pagelist,
28 struct vm_area_struct *vma, int dest) { return 0; }
29
30static inline int migrate_prep(void) { return -ENOSYS; }
31
32static inline int migrate_vmas(struct mm_struct *mm,
33 const nodemask_t *from, const nodemask_t *to,
34 unsigned long flags)
35{
36 return -ENOSYS;
37}
38
39/* Possible settings for the migrate_page() method in address_operations */
40#define migrate_page NULL
41#define fail_migrate_page NULL
42
43#endif /* CONFIG_MIGRATION */
44#endif /* _LINUX_MIGRATE_H */