On Sun, Oct 1, 2017 at 2:59 PM, Dave Chinner <[email protected]> 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.
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