On 01/29/2017 07:35 PM, Anshuman Khandual wrote: > + if ((new_pol->mode == MPOL_BIND) > + && nodemask_has_cdm(new_pol->v.nodes)) > + set_vm_cdm(vma); So, if you did: mbind(addr, PAGE_SIZE, MPOL_BIND, all_nodes, ...); mbind(addr, PAGE_SIZE, MPOL_BIND, one_non_cdm_node, ...); You end up with a VMA that can never have KSM done on it, etc... Even though there's no good reason for it. I guess /proc/$pid/smaps might be able to help us figure out what was going on here, but that still seems like an awful lot of damage. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>