On Wed 23-02-11 10:19:22, Dave Hansen wrote: > On Wed, 2011-02-23 at 16:10 +0100, Michal Hocko wrote: > > We can reduce this internal fragmentation by splitting the single > > page_cgroup array into more arrays where each one is well kmalloc > > aligned. This patch implements this idea. > > How about using alloc_pages_exact()? These things aren't allocated > often enough to really get most of the benefits of being in a slab. Yes, you are right. alloc_pages_exact (which I wasn't aware of) is much simpler solution and it gets comparable results. I will prepare the patch for review. Thanks for pointing this out. -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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>