Hi, I would like to propose the following topic for the MM track. Different group of people would like to use NVIDMMs as a low cost & slower memory which is presented to the system as a NUMA node. We do have a NUMA API but it doesn't really fit to "balance the memory between nodes" needs. People would like to have hot pages in the regular RAM while cold pages might be at lower speed NUMA nodes. We do have NUMA balancing for promotion path but there is notIhing for the other direction. Can we start considering memory reclaim to move pages to more distant and idle NUMA nodes rather than reclaim them? There are certainly details that will get quite complicated but I guess it is time to start discussing this at least. -- Michal Hocko SUSE Labs
