On Tue 02-10-18 09:51:40, Michael Bringmann wrote: [...] > When the device-tree affinity attributes have changed for memory, > the 'nid' affinity calculated points to a different node for the > memory block than the one used to install it, previously on the > source system. The newly calculated 'nid' affinity may not yet > be initialized on the target system. The current memory tracking > mechanisms do not record the node to which a memory block was > associated when it was added. Nathan is looking at adding this > feature to the new implementation of LMBs, but it is not there > yet, and won't be present in earlier kernels without backporting a > significant number of changes. Then the patch you have proposed here just papers over a real issue, no? IIUC then you simply do not remove the memory if you lose the race. -- Michal Hocko SUSE Labs
