On 2015/8/3 12:10, Dave Hansen wrote: > On 08/02/2015 07:05 PM, Xishi Qiu wrote: >>>> Also, this might not do very much good in practice. If you are >>>> splitting a high-order page, you are doing the split because the >>>> lower-order lists are empty. So won't that list_add() be to an empty >> >> I made a mistake, you are right, all the lower-order lists are empty, >> so it is no sense to add to the tail. > > I actually tested this experimentally and the lists are not always > empty. It's probably __rmqueue_smallest() vs. __rmqueue_fallback() logic. > > In any case, you might want to double-check. > Hi Dave, How did you do the experiment? Thanks, Xishi Qiu > . > -- 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>