Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef __LINUX_PAGEISOLATION_H
2#define __LINUX_PAGEISOLATION_H
3
4
5bool has_unmovable_pages(struct zone *zone, struct page *page, int count);
6void set_pageblock_migratetype(struct page *page, int migratetype);
7int move_freepages_block(struct zone *zone, struct page *page,
8 int migratetype);
9int move_freepages(struct zone *zone,
10 struct page *start_page, struct page *end_page,
11 int migratetype);
12
13/*
14 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
15 * If specified range includes migrate types other than MOVABLE or CMA,
16 * this will fail with -EBUSY.
17 *
18 * For isolating all pages in the range finally, the caller have to
19 * free all pages in the range. test_page_isolated() can be used for
20 * test it.
21 */
22int
23start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
24 unsigned migratetype);
25
26/*
27 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
28 * target range is [start_pfn, end_pfn)
29 */
30int
31undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
32 unsigned migratetype);
33
34/*
35 * Test all pages in [start_pfn, end_pfn) are isolated or not.
36 */
37int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn);
38
39/*
40 * Internal functions. Changes pageblock's migrate type.
41 */
42int set_migratetype_isolate(struct page *page);
43void unset_migratetype_isolate(struct page *page, unsigned migratetype);
44struct page *alloc_migrate_target(struct page *page, unsigned long private,
45 int **resultp);
46
47#endif