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39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
#ifndef _LINUX_MIGRATE_H
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#define _LINUX_MIGRATE_H
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#include <linux/mm.h>
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#ifdef CONFIG_MIGRATION
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extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
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extern int putback_lru_pages(struct list_head *l);
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extern int migrate_page(struct page *, struct page *);
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extern void migrate_page_copy(struct page *, struct page *);
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extern int migrate_page_remove_references(struct page *, struct page *, int);
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extern int migrate_pages(struct list_head *l, struct list_head *t,
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struct list_head *moved, struct list_head *failed);
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extern int migrate_pages_to(struct list_head *pagelist,
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struct vm_area_struct *vma, int dest);
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extern int fail_migrate_page(struct page *, struct page *);
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extern int migrate_prep(void);
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#else
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static inline int isolate_lru_page(struct page *p, struct list_head *list)
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{ return -ENOSYS; }
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static inline int putback_lru_pages(struct list_head *l) { return 0; }
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static inline int migrate_pages(struct list_head *l, struct list_head *t,
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struct list_head *moved, struct list_head *failed) { return -ENOSYS; }
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static inline int migrate_pages_to(struct list_head *pagelist,
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struct vm_area_struct *vma, int dest) { return 0; }
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static inline int migrate_prep(void) { return -ENOSYS; }
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/* Possible settings for the migrate_page() method in address_operations */
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#define migrate_page NULL
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#define fail_migrate_page NULL
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#endif /* CONFIG_MIGRATION */
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#endif /* _LINUX_MIGRATE_H */
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