On Tue, 27 Jul 2010, Minchan Kim wrote: > But in fact I have a concern to use PG_reserved since it can be used > afterward pfn_valid normally to check hole in non-hole system. So I > think it's redundant. PG_reserved is already used to mark pages not handled by the page allocator (see mmap_init_zone). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>