Re: [PATCH 00/13] dax, pmem: move cpu cache maintenance to libnvdimm

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On Sun, Jan 22, 2017 at 11:10:04PM -0800, Dan Williams wrote:
> How about we solve the copy_from_user() abuse first before we hijack
> this thread for some future feature that afaics has no patches posted
> yet.

Solving copy_from_user abuse first sounds perfectly fine to me.  But
please do so without abusing the block layer for persistent memory
access.  Given that we don't have use cases for different pmem access
methods in a single OS image yet let's avoid introducing new ops
for now and just remove the copy_from_user abuse.

In the longer run I like your dax_operations, but they need to be
separate from the block layer.

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