Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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);
9/*
10 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
11 * If specified range includes migrate types other than MOVABLE or CMA,
12 * this will fail with -EBUSY.
13 *
14 * For isolating all pages in the range finally, the caller have to
15 * free all pages in the range. test_page_isolated() can be used for
16 * test it.
17 */
18int
19start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
20 unsigned migratetype);
21
22/*
23 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
24 * target range is [start_pfn, end_pfn)
25 */
26int
27undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
28 unsigned migratetype);
29
30/*
31 * Test all pages in [start_pfn, end_pfn) are isolated or not.
32 */
33int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn);
34
35/*
36 * Internal functions. Changes pageblock's migrate type.
37 */
38int set_migratetype_isolate(struct page *page);
39void unset_migratetype_isolate(struct page *page, unsigned migratetype);
40
41
42#endif