1 #ifndef __LINUX_PAGEISOLATION_H
2 #define __LINUX_PAGEISOLATION_H
5 bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
6 bool skip_hwpoisoned_pages);
7 void set_pageblock_migratetype(struct page *page, int migratetype);
8 int move_freepages_block(struct zone *zone, struct page *page,
10 int move_freepages(struct zone *zone,
11 struct page *start_page, struct page *end_page,
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.
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
24 start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
25 unsigned migratetype, bool skip_hwpoisoned_pages);
28 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
29 * target range is [start_pfn, end_pfn)
32 undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
33 unsigned migratetype);
36 * Test all pages in [start_pfn, end_pfn) are isolated or not.
38 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
39 bool skip_hwpoisoned_pages);
42 * Internal functions. Changes pageblock's migrate type.
44 int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages);
45 void unset_migratetype_isolate(struct page *page, unsigned migratetype);
46 struct page *alloc_migrate_target(struct page *page, unsigned long private,