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,
6 bool skip_hwpoisoned_pages);
7void set_pageblock_migratetype(struct page *page, int migratetype);
8int move_freepages_block(struct zone *zone, struct page *page,
9 int migratetype);
10int move_freepages(struct zone *zone,
11 struct page *start_page, struct page *end_page,
12 int migratetype);
13
14/*
15 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
16 * If specified range includes migrate types other than MOVABLE or CMA,
17 * this will fail with -EBUSY.
18 *
19 * For isolating all pages in the range finally, the caller have to
20 * free all pages in the range. test_page_isolated() can be used for
21 * test it.
22 */
23int
24start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
25 unsigned migratetype, bool skip_hwpoisoned_pages);
26
27/*
28 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
29 * target range is [start_pfn, end_pfn)
30 */
31int
32undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
33 unsigned migratetype);
34
35/*
36 * Test all pages in [start_pfn, end_pfn) are isolated or not.
37 */
38int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
39 bool skip_hwpoisoned_pages);
40
41/*
42 * Internal functions. Changes pageblock's migrate type.
43 */
44int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages);
45void unset_migratetype_isolate(struct page *page, unsigned migratetype);
46struct page *alloc_migrate_target(struct page *page, unsigned long private,
47 int **resultp);
48
49#endif