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1 | #ifndef __LINUX_PAGEISOLATION_H |
2 | #define __LINUX_PAGEISOLATION_H |
3 | |
4 | #ifdef CONFIG_MEMORY_ISOLATION |
5 | static inline bool is_migrate_isolate_page(struct page *page) |
6 | { |
7 | return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; |
8 | } |
9 | static inline bool is_migrate_isolate(int migratetype) |
10 | { |
11 | return migratetype == MIGRATE_ISOLATE; |
12 | } |
13 | #else |
14 | static inline bool is_migrate_isolate_page(struct page *page) |
15 | { |
16 | return false; |
17 | } |
18 | static inline bool is_migrate_isolate(int migratetype) |
19 | { |
20 | return false; |
21 | } |
22 | #endif |
23 | |
24 | bool has_unmovable_pages(struct zone *zone, struct page *page, int count, |
25 | bool skip_hwpoisoned_pages); |
26 | void set_pageblock_migratetype(struct page *page, int migratetype); |
27 | int move_freepages_block(struct zone *zone, struct page *page, |
28 | int migratetype); |
29 | int move_freepages(struct zone *zone, |
30 | struct page *start_page, struct page *end_page, |
31 | int migratetype); |
32 | |
33 | /* |
34 | * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. |
35 | * If specified range includes migrate types other than MOVABLE or CMA, |
36 | * this will fail with -EBUSY. |
37 | * |
38 | * For isolating all pages in the range finally, the caller have to |
39 | * free all pages in the range. test_page_isolated() can be used for |
40 | * test it. |
41 | */ |
42 | int |
43 | start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, |
44 | unsigned migratetype, bool skip_hwpoisoned_pages); |
45 | |
46 | /* |
47 | * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. |
48 | * target range is [start_pfn, end_pfn) |
49 | */ |
50 | int |
51 | undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, |
52 | unsigned migratetype); |
53 | |
54 | /* |
55 | * Test all pages in [start_pfn, end_pfn) are isolated or not. |
56 | */ |
57 | int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, |
58 | bool skip_hwpoisoned_pages); |
59 | |
60 | /* |
61 | * Internal functions. Changes pageblock's migrate type. |
62 | */ |
63 | int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages); |
64 | void unset_migratetype_isolate(struct page *page, unsigned migratetype); |
65 | struct page *alloc_migrate_target(struct page *page, unsigned long private, |
66 | int **resultp); |
67 | |
68 | #endif |
69 |
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