On Sun, Oct 1, 2017 at 2:59 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote: [..] > The "capacity tax" had nothing to do with it - the major problem > with self hosting struct pages was that page locks can be hot and > contention on them will rapidly burn through write cycles on the > pmem. That's still a problem, yes? It was an early concern we had, but it has not born out in practice, and stopped worrying about it 2 years ago when the ZONE_DEVICE infrastructure was merged. -- 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>