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,
16 unsigned long private, int offlining);
17
18extern int fail_migrate_page(struct address_space *,
19 struct page *, struct page *);
20
21extern int migrate_prep(void);
22extern int migrate_vmas(struct mm_struct *mm,
23 const nodemask_t *from, const nodemask_t *to,
24 unsigned long flags);
25#else
26#define PAGE_MIGRATION 0
27
28static inline int putback_lru_pages(struct list_head *l) { return 0; }
29static inline int migrate_pages(struct list_head *l, new_page_t x,
30 unsigned long private, int offlining) { return -ENOSYS; }
31
32static inline int migrate_prep(void) { return -ENOSYS; }
33
34static inline int migrate_vmas(struct mm_struct *mm,
35 const nodemask_t *from, const nodemask_t *to,
36 unsigned long flags)
37{
38 return -ENOSYS;
39}
40
41/* Possible settings for the migrate_page() method in address_operations */
42#define migrate_page NULL
43#define fail_migrate_page NULL
44
45#endif /* CONFIG_MIGRATION */
46#endif /* _LINUX_MIGRATE_H */