Re: [PATCH] ext4: introduce per-inode DAX flag

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On Tue, Aug 08, 2017 at 11:00:16AM +0200, Lukas Czerner wrote:
> So I've read the thread where you talk about this. I do not see anything
> about it being a masive mistake. I only see that you're confident that's
> it's a wrong thing to do. Like you're ever not confident about
> something;) Care to elaborate on what's wrong with it and why we do not
> want it ? On the surface it does look like a usefull option to have.

The problem is that DAX is an implementation detail on how to write
data back.  It has absolutely no user visible semantics.  Encoding
such a detail in the on-disk format is not a good idea.



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