On 11/12/2014 12:27 AM, Joonsoo Kim wrote: > @@ -1092,6 +1096,14 @@ struct mem_section { > > /* See declaration of similar field in struct zone */ > unsigned long *pageblock_flags; > +#ifdef CONFIG_PAGE_EXTENSION > + /* > + * If !SPARSEMEM, pgdat doesn't have page_ext pointer. We use > + * section. (see page_ext.h about this.) > + */ > + struct page_ext *page_ext; > + unsigned long pad; > +#endif Will the distributions be amenable to enabling this? If so, I'm all for it if it gets us things like page_owner at runtime. If not, this becomes of much more questionable utility. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>