Hi Alistair, On 2/15/22 8:28 AM, Alistair Popple wrote: > ZONE_MOVABLE uses the remaining memory in each node. It's starting pfn > is also aligned to MAX_ORDER_NR_PAGES. It is possible for the remaining > memory in a node to be less than MAX_ORDER_NR_PAGES, meaning there is > not enough room for ZONE_MOVABLE on that node. How plausible is this scenario on normal systems ? Should not the node always contain MAX_ORDER_NR_PAGES aligned pages ? Also all zones which get created from that node should also be MAX_ORDER_NR_PAGES aligned ? I am just curious how a node could end up being like this. - Anshuman
