1 #ifndef __LINUX_PAGEISOLATION_H 2 #define __LINUX_PAGEISOLATION_H 3 4 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, 8 int migratetype); 9 int 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 */ 22 int 23 start_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 */ 30 int 31 undo_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 */ 37 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); 38 39 /* 40 * Internal functions. Changes pageblock's migrate type. 41 */ 42 int set_migratetype_isolate(struct page *page); 43 void unset_migratetype_isolate(struct page *page, unsigned migratetype); 44 struct page *alloc_migrate_target(struct page *page, unsigned long private, 45 int **resultp); 46 47 #endif 48