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 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, 9 int migratetype); 10 int move_freepages(struct zone *zone, 11 struct page *start_page, struct page *end_page, 12 int migratetype); 13 14 /* 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. 18 * 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 21 * test it. 22 */ 23 int 24 start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, 25 unsigned migratetype, bool skip_hwpoisoned_pages); 26 27 /* 28 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. 29 * target range is [start_pfn, end_pfn) 30 */ 31 int 32 undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, 33 unsigned migratetype); 34 35 /* 36 * Test all pages in [start_pfn, end_pfn) are isolated or not. 37 */ 38 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, 39 bool skip_hwpoisoned_pages); 40 41 /* 42 * Internal functions. Changes pageblock's migrate type. 43 */ 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, 47 int **resultp); 48 49 #endif 50