Re: [PATCH] staging: exfat: add exfat filesystem code to staging

From: Sasha Levin
Date: Thu Aug 29 2019 - 19:35:10 EST

On Thu, Aug 29, 2019 at 07:18:16PM -0400, Valdis KlÄtnieks wrote:
On Thu, 29 Aug 2019 22:56:31 +0200, Pali Roh?r said:

I'm not really sure if this exfat implementation is fully suitable for
mainline linux kernel.

In my opinion, proper way should be to implement exFAT support into
existing fs/fat/ code instead of replacing whole vfat/msdosfs by this
new (now staging) fat implementation.

In linux kernel we really do not need two different implementation of

This patch however does have one major advantage over "patch vfat to
support exfat" - which is that the patch exists.

If somebody comes forward with an actual "extend vfat to do exfat" patch,
we should at that point have a discussion about relative merits....

This patch going into staging doesn't necessarily mean that one day
it'll get moved to fs/exfat/. It's very possible that the approach would
instead be to use the staging code for reference, build this
functionality in fs/fat/, and kill off the staging code when it's not
needed anymore.

With regards to missing specs/docs/whatever - our main concern with this
release was that we want full interoperability, which is why the spec
was made public as-is without modifications from what was used
internally. There's no "secret sauce" that Microsoft is hiding here.

How about we give this spec/code time to get soaked and reviewed for a
bit, and if folks still feel (in a month or so?) that there are missing
bits of information related to exfat, I'll be happy to go back and try
to get them out as well.