On Fri, 18 Jan 2013, Steven Rostedt wrote: > The problem is that the changes can happen on another CPU, which means > that barrier isn't sufficient. No these are per cpu variables that are only read locally. The synchronization is not between processors. -- 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>