On Fri, 23 Aug 2013, Joonsoo Kim wrote: > On Thu, Aug 22, 2013 at 05:53:00PM +0000, Christoph Lameter wrote: > > On Thu, 22 Aug 2013, Joonsoo Kim wrote: > > > > > We can get cachep using page in struct slab_rcu, so remove it. > > > > Ok but this means that we need to touch struct page. Additional cacheline > > in cache footprint. > > In following patch, we overload RCU_HEAD to LRU of struct page and > also overload struct slab to struct page. So there is no > additional cacheline footprint at final stage. If you do not use rcu (standard case) then you have an additional cacheline. -- 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>