On 01.09.22 11:00, Aneesh Kumar K V wrote: > On 9/1/22 2:00 PM, Muchun Song wrote: >> The memory-notify-based approach aims to handle meory-less nodes, however, it just adds >> the complexity of code as pointed by David in thread [1]. The handling of memory-less >> nodes is introduced by commit 4faf8d950ec4 ("hugetlb: handle memory hot-plug events"). >> From its commit message, we cannot find any necessity of handling this case. So, we can >> simply register/unregister sysfs entries in register_node/unregister_node to simlify the >> code. > > Isn't that hotplug callback added because in hugetlb_register_all_nodes() we register > sysfs nodes only for N_MEMORY nodes? > Right, that needs adjustment as well. -- Thanks, David / dhildenb