Re: [PATCH 14/15] libnvdimm: support read-only btt backing devices

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Christoph Hellwig <hch@xxxxxx> writes:

> On Mon, Jun 22, 2015 at 12:00:54PM -0400, Jeff Moyer wrote:
>> Right now, the guidance should be to always use btt since there are no
>> applications that are directly taking advantage of persistent memory
>> (that I know).  I expect documentation would take care of that.  I also
>> expect that, as applications add support, they would note the
>> requirement for dax mountpoints in their documentation.
>
> It's not just DAX.  Avoiding the overhead for anything else is
> another good reason.

OK, add torn sector detection/recovery to that statement, then.  More
importantly, do you agree with the sentiment or not?

Cheers,
Jeff
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