khugepaged_mutex is used very complexly and there are too many small pieces of the code depend on CONFIG_NUMA, they make the code very hardly understand This patchset try to optimize use of khugepaged_mutex and reduce dependence of CONFIG_NUMA, after the patchset, the code is more readable -- 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>