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

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On Tue, Sep 17, 2019 at 2:47 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> It's the fact that it actually was in a form that could be merged, no
> one has done that with the sdfat code :)

Well, I'm more than happy to help if you guys are happy with merging
the new base.

> What fixes?  That's what I'm asking here.

I gave this as an example in my previous email:
https://github.com/MotorolaMobilityLLC/kernel-msm/commit/7ab1657

> How do we "know" that this is better than what we currently have today?
> We don't, so it's a bit hard to tell someone, "delete the work you did
> and replace it with this other random chunk of code, causing you a bunch
> more work in the process for no specific reason other than it looks
> 'newer'." :(

The new sdFAT base I'm suggesting, is just as "random" as the one
staging tree is based on.

If exFAT gets merged to Torvald's tree, there will be a lot more eyes
interested in it.
If there's a better base, we better switch to it now and prevent
further headaches long-term.

It's really hard to compare those 2 drivers base and extract
meaningful changelogs.

But regardless, here are some diff stats:
<Full diff stat>
 Kconfig      |   79 +-
 Makefile     |   46 +-
 api.c        |  423 ----
 api.h        |  310 ---
 blkdev.c     |  409 +---
 cache.c      | 1142 ++++-----
 config.h     |   49 -
 core.c       | 5583 ++++++++++++++++++++++++--------------------
 core.h       |  196 --
 core_exfat.c | 1553 ------------
 exfat.h      | 1309 +++++++----
 exfat_fs.h   |  417 ----
 extent.c     |  351 ---
 fatent.c     |  182 --
 misc.c       |  401 ----
 nls.c        |  490 ++--
 super.c      | 5103 +++++++++++++++++++++-------------------
 upcase.c     |  740 ++++++
 upcase.h     |  407 ----
 version.h    |   29 -
 xattr.c      |  136 --
 21 files changed, 8186 insertions(+), 11169 deletions(-)

<diff-filter=M>
 Kconfig  |   79 +-
 Makefile |   46 +-
 blkdev.c |  409 +---
 cache.c  | 1142 +++++-----
 core.c   | 5583 ++++++++++++++++++++++++++----------------------
 exfat.h  | 1309 ++++++++----
 nls.c    |  490 ++---
 super.c  | 5103 ++++++++++++++++++++++---------------------
 8 files changed, 7446 insertions(+), 6715 deletions(-)

> I recommend looking at what we have in the tree now, and seeing what is
> missing compared to "sdfat".  I know a lot of places in the exfat code
> that needs to be fixed up, odds are they are the same stuff that needs
> to be resolved in sdfat as well.

Would there be any more data that I can provide?
It's really hard to go through the full diff :(

Thanks.



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