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.
