On Sat, 7 Jul 2012, Joonsoo Kim wrote: > __alloc_pages_direct_compact has many arguments so invoking it is very costly. > And in almost invoking case, order is 0, so return immediately. > If "zero cost" is "very costly", then this might make sense. __alloc_pages_direct_compact() is inlined by gcc. -- 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>