check_source      241 mm/compaction.c __reset_isolation_pfn(struct zone *zone, unsigned long pfn, bool check_source,
check_source      260 mm/compaction.c 	if (check_source && check_target && !get_pageblock_skip(page))
check_source      267 mm/compaction.c 	if (!check_source && check_target &&
check_source      294 mm/compaction.c 			if (check_source && PageLRU(page)) {