"Darrick J. Wong" <[email protected]> writes:

>> - Whenever you mount a filesystem with DAX, it spits out a message that says
>>   "DAX enabled. Warning: EXPERIMENTAL, use at your own risk".  What criteria
>>   needs to be met for DAX to no longer be considered experimental?
>
> For XFS I'd like to get reflink working with it, for starters.

What do you mean by this, exactly?  When Dave outlined the requirements
for PMEM_IMMUTABLE, it was very clear that metadata updates would not be
possible.  And would you really cosider this a barrier to marking dax
fully supported?  I wouldn't.

> We probably need a bunch more verification work to show that file IO
> doesn't adopt any bad quirks having turned on the per-inode DAX flag.

Can you be more specific?  We have ltp and xfstests.  If you have some
mkfs/mount options that you think should be tested, speak up.  Beyond
that, if it passes ./check -g auto and ltp, are we good?

-Jeff
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