linux-master/mm/page_isolation.c

34 				int migratetype, int flags)
49 		if (is_migrate_cma(migratetype))
143  * This function set pageblock migratetype to isolate if no unmovable page is
147 static int set_migratetype_isolate(struct page *page, int migratetype, int isol_flags,
179 			migratetype, isol_flags);
206 static void unset_migratetype_isolate(struct page *page, int migratetype)
255 		nr_pages = move_freepages_block(zone, page, migratetype, NULL);
256 		__mod_zone_freepage_state(zone, nr_pages, migratetype);
258 	set_pageblock_migratetype(page, migratetype);
260 		__putback_isolated_page(page, order, migratetype);
291  * @migratetype:	migrate type to set in error recovery.
301  * split into separate migratetype lists, which is supposed to; if it is an
308 			int migratetype)
338 		ret = set_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype,
426 				 * pages to be added into separate migratetype free
440 				 * restore the page's migratetype so that it can
441 				 * be split into separate migratetype free lists
452 				 * the free page to the right migratetype list.
478 	/* restore the original migratetype */
480 		unset_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype);
488  * @migratetype:	Migrate type to set in error recovery.
530 			     int migratetype, int flags, gfp_t gfp_flags)
542 			skip_isolation, migratetype);
551 			skip_isolation, migratetype);
553 		unset_migratetype_isolate(pfn_to_page(isolate_start), migratetype);
562 		if (page && set_migratetype_isolate(page, migratetype, flags,
564 			undo_isolate_page_range(isolate_start, pfn, migratetype);
567 				migratetype);
578  * @migratetype:	New migrate type to set on the range
581  * and switches it to @migratetype.
584 			    int migratetype)
597 		unset_migratetype_isolate(page, migratetype);
666 	 * Then we just check migratetype first.