On Fri, 28 Jan 2011, KAMEZAWA Hiroyuki wrote: > > > I see it as a tradeoff of when to check? add_to_page_cache or when we > > > are want more free memory (due to allocation). It is OK to wakeup > > > kswapd while allocating memory, somehow for this purpose (global page > > > cache), add_to_page_cache or add_to_page_cache_locked does not seem > > > the right place to hook into. I'd be open to comments/suggestions > > > though from others as well. > > I don't like add hook here. > AND I don't want to run kswapd because 'kswapd' has been a sign as > there are memory shortage. (reusing code is ok.) > > How about adding new daemon ? Recently, khugepaged, ksmd works for > managing memory. Adding one more daemon for special purpose is not > very bad, I think. Then, you can do > - wake up without hook > - throttle its work. > - balance the whole system rather than zone. > I think per-node balance is enough... I think we already have enough kernel daemons floating around. They are multiplying in an amazing way. What would be useful is to map all the memory management background stuff into a process. May call this memd instead? Perhaps we can fold khugepaged into kswapd as well etc. -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>