On Tue, Jun 21, 2011 at 01:01:17AM +0800, Cong Wang wrote: > Without this patch, THP is still initialized (although khugepaged is not started), > that is what I don't want to see when I pass "transparent_hugepage=never", > because "never" for me means THP is totally unseen, even not initialized. The ram saving by not registering in sysfs is not worth the loss of generic functionality. You can try to make the hash and slab khugepaged allocations more dynamic if you want to microoptimize for RAM usage, that I wouldn't be against if you find a way to do it simply and without much complexity (and .text) added. But likely there are other places to optimize that may introduce less tricks and would give you a bigger saving than ~8kbytes, it's up to you. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>