Re: Question about the "EXPERIMENTAL" tag for dax in XFS
From: Darrick J. Wong
Date: Fri Feb 26 2021 - 14:06:45 EST
On Fri, Feb 26, 2021 at 09:45:45AM +0000, ruansy.fnst@xxxxxxxxxxx wrote:
>
Hi, guys
>
>
Beside this patchset, I'd like to confirm something about the
>
"EXPERIMENTAL" tag for dax in XFS.
>
>
In XFS, the "EXPERIMENTAL" tag, which is reported in waring message
>
when we mount a pmem device with dax option, has been existed for a
>
while. It's a bit annoying when using fsdax feature. So, my initial
>
intention was to remove this tag. And I started to find out and solve
>
the problems which prevent it from being removed.
>
>
As is talked before, there are 3 main problems. The first one is "dax
>
semantics", which has been resolved. The rest two are "RMAP for
>
fsdax" and "support dax reflink for filesystem", which I have been
>
working on.
<nod>
>
So, what I want to confirm is: does it means that we can remove the
>
"EXPERIMENTAL" tag when the rest two problem are solved?
Yes. I'd keep the experimental tag for a cycle or two to make sure that
nothing new pops up, but otherwise the two patchsets you've sent close
those two big remaining gaps. Thank you for working on this!
>
Or maybe there are other important problems need to be fixed before
>
removing it? If there are, could you please show me that?
That remains to be seen through QA/validation, but I think that's it.
Granted, I still have to read through the two patchsets...
--D
>
>
Thank you.
>
>
>
--
>
Ruan Shiyang.