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Date:   Wed, 22 Sep 2021 06:25:19 +0100
From:   Christoph Hellwig <>
To:     "Darrick J. Wong" <>
Cc:     Christoph Hellwig <>, Jan Kara <>,
        Eric Sandeen <>,,,,
Subject: Re: [PATCH 3/3] ext2: remove dax EXPERIMENTAL warning

On Tue, Sep 21, 2021 at 07:36:22PM -0700, Darrick J. Wong wrote:
> 'still a mess' isn't all that useful for figuring out what still needs
> to be done and splitting up the work.  Do you have items beyond my own
> list below?
>  - still arguing over what exactly FALLOC_FL_ZERO_REINIT_WHATEVER_PONIES
>    should be doing
>  - no reflink support, encompassing:
>  - hwpoison from mmap regions really ought to tell the fs that bad stuff
>    happened
>  - mm rmap can't handle more than one owner

My main really big item is that we're still mounting through a fake
block device, suporting partitions and all that crap.  We need to sort
out the whole story of how pmem/nvdimm is actually treated, because
what we have right now is not sustainable at all.

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