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SubjectRe: [PATCH] staging: exfat: add exfat filesystem code to staging
Hi Christoph,

On Thu, Aug 29, 2019 at 03:01:49PM +0800, Gao Xiang wrote:
> Hi Christoph,
> On Wed, Aug 28, 2019 at 11:23:40PM -0700, Christoph Hellwig wrote:
> > Can we please just review the damn thing and get it into the proper
> > tree? That whole concept of staging file systems just has been one
> > fricking disaster, including Greg just moving not fully reviewed ones
> > over like erofs just because he feels like it. I'm getting sick and
> > tired of this scheme.
> I just want to a word on EROFS stuff (I'm not suitable to comment
> on the current exfat implementation). Since EROFS stuff has been
> in staging tree for more than a year, anyone who wants to review
> it can review this filesystem at any time.
> EROFS is not just a homebrew or experimental fs for now, it has been
> widely used for many commerical smartphones, and we will upstream it
> to AOSP for more Android smartphones after it gets merged to upstream.
> I personally cc-ed you for a month, and I didn't get any objection
> from others (including Linus) for about 2 months. That isn't because
> of someone likes it, rather we cannot make no progress compared with
> some exist fs community because this is our love work.
> And it's self-contained driver at least, and it's disabled by default,
> It cannot be stayed in staging tree to do a lot of EROFS feature
> improvements itself forever (since it is cleaned enough).
> It has proven its validity as well.

It seems I misunderstood your idea, sorry about that... EROFS
properly uses vfs interfaces (e.g. we also considered RCU symlink
lookup path at the very beginning of our design as Al said [1],
except for mount interface as Al mentioned [2] (thanks him for
taking some time on it), it was used for our debugging use),
and it didn't cause any extra burden to vfs or other subsystems.


Gao Xiang

> Thanks,
> Gao Xiang

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