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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/page-isolation.h
1 #ifndef __LINUX_PAGEISOLATION_H
2 #define __LINUX_PAGEISOLATION_H
4 #ifdef CONFIG_MEMORY_ISOLATION
5 static inline bool has_isolate_pageblock(struct zone
*zone
)
7 return zone
->nr_isolate_pageblock
;
9 static inline bool is_migrate_isolate_page(struct page
*page
)
11 return get_pageblock_migratetype(page
) == MIGRATE_ISOLATE
;
13 static inline bool is_migrate_isolate(int migratetype
)
15 return migratetype
== MIGRATE_ISOLATE
;
18 static inline bool has_isolate_pageblock(struct zone
*zone
)
22 static inline bool is_migrate_isolate_page(struct page
*page
)
26 static inline bool is_migrate_isolate(int migratetype
)
32 bool has_unmovable_pages(struct zone
*zone
, struct page
*page
, int count
,
33 bool skip_hwpoisoned_pages
);
34 void set_pageblock_migratetype(struct page
*page
, int migratetype
);
35 int move_freepages_block(struct zone
*zone
, struct page
*page
,
37 int move_freepages(struct zone
*zone
,
38 struct page
*start_page
, struct page
*end_page
,
42 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
43 * If specified range includes migrate types other than MOVABLE or CMA,
44 * this will fail with -EBUSY.
46 * For isolating all pages in the range finally, the caller have to
47 * free all pages in the range. test_page_isolated() can be used for
51 start_isolate_page_range(unsigned long start_pfn
, unsigned long end_pfn
,
52 unsigned migratetype
, bool skip_hwpoisoned_pages
);
55 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
56 * target range is [start_pfn, end_pfn)
59 undo_isolate_page_range(unsigned long start_pfn
, unsigned long end_pfn
,
60 unsigned migratetype
);
63 * Test all pages in [start_pfn, end_pfn) are isolated or not.
65 int test_pages_isolated(unsigned long start_pfn
, unsigned long end_pfn
,
66 bool skip_hwpoisoned_pages
);
68 struct page
*alloc_migrate_target(struct page
*page
, unsigned long private,