Re: [PATCH v3] libnvdimm, region: sysfs trigger for nvdimm_flush()

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Dan Williams <dan.j.williams@xxxxxxxxx> writes:

> We also still seem to need a discovery mechanism as I've had questions
> about "how do I tell if my system supports deep flush?". That's where
> sysfs is much better than an ioctl. The need for deep flush discovery
> tips the scales, at least for me, to also do deep flush triggering
> through the same interface.

Return ENXIO or EOPNOTSUPP from the ioctl when it isn't supported?

Cheers,
Jeff
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