On Fri, 22 Nov 2019, Pengfei Li wrote: > I am sorry that I did not make it clear. I want to express this series > of patches will benefit NUMA systems with multiple nodes. Ok but that benefit needs to be quantified somehow. > The main benefit is that it will be more efficient when traversing all > nodes (for example when performing page reclamation). And you loose the prioritization of allocations through these different zones. We create zonelists with a certain sequence of the zones in order to prefer allocations from certain zones. This is in particular important for the smaller DMA zones which may be easily exhausted.
