1 #ifndef __LINUX_PAGEISOLATION_H
2 #define __LINUX_PAGEISOLATION_H
5 bool has_unmovable_pages(struct zone *zone, struct page *page, int count);
6 void set_pageblock_migratetype(struct page *page, int migratetype);
7 int move_freepages_block(struct zone *zone, struct page *page,
9 int move_freepages(struct zone *zone,
10 struct page *start_page, struct page *end_page,
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.
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
23 start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
24 unsigned migratetype);
27 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
28 * target range is [start_pfn, end_pfn)
31 undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
32 unsigned migratetype);
35 * Test all pages in [start_pfn, end_pfn) are isolated or not.
37 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn);
40 * Internal functions. Changes pageblock's migrate type.
42 int set_migratetype_isolate(struct page *page);
43 void unset_migratetype_isolate(struct page *page, unsigned migratetype);