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a5d76b54 KH |
1 | #ifndef __LINUX_PAGEISOLATION_H |
2 | #define __LINUX_PAGEISOLATION_H | |
3 | ||
4 | /* | |
5 | * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE. | |
6 | * If specified range includes migrate types other than MOVABLE, | |
7 | * this will fail with -EBUSY. | |
8 | * | |
9 | * For isolating all pages in the range finally, the caller have to | |
10 | * free all pages in the range. test_page_isolated() can be used for | |
11 | * test it. | |
12 | */ | |
13 | extern int | |
14 | start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn); | |
15 | ||
16 | /* | |
17 | * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. | |
18 | * target range is [start_pfn, end_pfn) | |
19 | */ | |
20 | extern int | |
21 | undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn); | |
22 | ||
23 | /* | |
24 | * test all pages in [start_pfn, end_pfn)are isolated or not. | |
25 | */ | |
26 | extern int | |
27 | test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); | |
28 | ||
29 | /* | |
30 | * Internal funcs.Changes pageblock's migrate type. | |
31 | * Please use make_pagetype_isolated()/make_pagetype_movable(). | |
32 | */ | |
33 | extern int set_migratetype_isolate(struct page *page); | |
34 | extern void unset_migratetype_isolate(struct page *page); | |
35 | ||
36 | ||
37 | #endif |