Hi Dave, On Fri, May 27, 2011 at 02:31:52PM -0700, Dave Hansen wrote: > On Fri, 2011-05-27 at 23:50 +0530, Vaidyanathan Srinivasan wrote: > > The overall idea is to have a VM data structure that can capture > > various boundaries of memory, and enable the allocations and reclaim > > logic to target certain areas based on the boundaries and properties > > required. > > It's worth noting that we already do targeted reclaim on boundaries > other than zones. The lumpy reclaim and memory compaction logically do > the same thing. So, it's at least possible to do this without having > the global LRU designed around the way you want to reclaim. > My understanding maybe incorrect, but doesn't both lumpy reclaim and memory compaction still work under zone boundary ? While trying to free up higher order pages, lumpy reclaim checks to ensure that pages that are selected do not cross zone boundary. Further, compaction walks through the pages in a zone and tries to re-arrange them. > Also, if you get _too_ dependent on the global LRU, what are you going > to do if our cgroup buddies manage to get cgroup'd pages off the global > LRU? > -- Regards, Ankita Garg (ankita@xxxxxxxxxx) Linux Technology Center IBM India Systems & Technology Labs, Bangalore, India -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>