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 /* 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 */ 18 int 19 start_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 */ 26 int 27 undo_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 */ 33 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); 34 35 /* 36 * Internal functions. Changes pageblock's migrate type. 37 */ 38 int set_migratetype_isolate(struct page *page); 39 void unset_migratetype_isolate(struct page *page, unsigned migratetype); 40 41 42 #endif 43