On 4/16/19 7:39 AM, Michal Hocko wrote: >> Strict binding also doesn't keep another app from moving the >> memory. > I would consider that a bug.
A bug where, though? Certainly not in the kernel. I'm just saying that if an app has an assumption that strict binding means that its memory can *NEVER* move, then that assumption is simply wrong. It's not the guarantee that we provide. In fact, we provide APIs (migrate_pages() at leaset) that explicitly and intentionally break that guarantee. All that our NUMA APIs provide (even the strict ones) is a promise about where newly-allocated pages will be allocated.
