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a5d76b54 KH |
1 | #ifndef __LINUX_PAGEISOLATION_H |
2 | #define __LINUX_PAGEISOLATION_H | |
3 | ||
194159fb MK |
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 | |
ee6f509c | 23 | |
b023f468 WC |
24 | bool has_unmovable_pages(struct zone *zone, struct page *page, int count, |
25 | bool skip_hwpoisoned_pages); | |
ee6f509c MK |
26 | void set_pageblock_migratetype(struct page *page, int migratetype); |
27 | int move_freepages_block(struct zone *zone, struct page *page, | |
28 | int migratetype); | |
435b405c MK |
29 | int move_freepages(struct zone *zone, |
30 | struct page *start_page, struct page *end_page, | |
31 | int migratetype); | |
32 | ||
a5d76b54 KH |
33 | /* |
34 | * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. | |
0815f3d8 | 35 | * If specified range includes migrate types other than MOVABLE or CMA, |
a5d76b54 KH |
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 | */ | |
ee6f509c | 42 | int |
0815f3d8 | 43 | start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, |
b023f468 | 44 | unsigned migratetype, bool skip_hwpoisoned_pages); |
a5d76b54 KH |
45 | |
46 | /* | |
47 | * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. | |
48 | * target range is [start_pfn, end_pfn) | |
49 | */ | |
ee6f509c | 50 | int |
0815f3d8 MN |
51 | undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, |
52 | unsigned migratetype); | |
a5d76b54 KH |
53 | |
54 | /* | |
0815f3d8 | 55 | * Test all pages in [start_pfn, end_pfn) are isolated or not. |
a5d76b54 | 56 | */ |
b023f468 WC |
57 | int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, |
58 | bool skip_hwpoisoned_pages); | |
a5d76b54 KH |
59 | |
60 | /* | |
0815f3d8 | 61 | * Internal functions. Changes pageblock's migrate type. |
a5d76b54 | 62 | */ |
b023f468 | 63 | int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages); |
ee6f509c | 64 | void unset_migratetype_isolate(struct page *page, unsigned migratetype); |
723a0644 MK |
65 | struct page *alloc_migrate_target(struct page *page, unsigned long private, |
66 | int **resultp); | |
a5d76b54 KH |
67 | |
68 | #endif |