The percpu pageset (pcp) code is looking a little old and neglected these days. This set does a couple of these things (in order of importance, not order of implementation in the series): 1. Change the default pageset pcp->high value from 744kB to 512k. (see "consolidate high-to-batch ratio code") 2. Allow setting of vm.percpu_pagelist_fraction=0, which takes you back to the boot-time behavior 3. Resolve inconsistencies in the way the boot-time and sysctl pcp code works. 4. Clarify some function names and code comments. -- 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>