linux-kernel - Re: [PATCH v2 0/4] dedupe smb unicode files

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Date:   Wed, 19 Jul 2023 17:06:20 -0500
From:   Dave Kleikamp <dave.kleikamp@...cle.com>
To:     "Dr. David Alan Gilbert" <linux@...blig.org>,
        Steve French <smfrench@...il.com>
Cc:     linkinjeon@...nel.org, tom@...pey.com, shaggy@...nel.org,
        linux-cifs@...r.kernel.org, krisman@...labora.com,
        jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/4] dedupe smb unicode files

On 7/19/23 4:58PM, Dr. David Alan Gilbert wrote:
> * Steve French (smfrench@...il.com) wrote:
>> The related question is which tree to send it from, if no problems
>> reported (presumably mine since it mostly affect cifs.ko and ksmbd.ko,
>> and because there hasn't been activity in fs/nls for years)
> 
> That was my hope, given that ~half of the patches are directly on that
> code, and it's the only very active tree this touches as far as I can
> tell.
> 
>> On Wed, Jul 19, 2023 at 12:56 PM Steve French <smfrench@...il.com> wrote:
>>>
>>> No objections to this on my part.  If Shaggy is ok with the JFS
>>> change, we could target it for 6.6-rc1 if it tests out ok

For the series:
Reviewed-by: Dave Kleikamp <dave.kleikamp@...cle.com>

Steve,
Feel free to pull in even the 4th patch into your tree with my consent. 
Or if you're more comfortable, I could submit it after yours hits mainline.

Shaggy

> 
> Thanks.
> 
> Dave
> 
>>> On Wed, Jul 12, 2023 at 6:28 PM Dr. David Alan Gilbert <dave@...blig.org> wrote:
>>>>
>>>> * linux@...blig.org (linux@...blig.org) wrote:
>>>>> From: "Dr. David Alan Gilbert" <linux@...blig.org>
>>>>>
>>>>> The smb client and server code have (mostly) duplicated code
>>>>> for unicode manipulation, in particular upper case handling.
>>>>>
>>>>> Flatten this lot into shared code.
>>>>
>>>> Gentle two week ping on this please.
>>>>
>>>> Dave
>>>>
>>>> (Apologies to the 3 of you who already got a copy of this ping,
>>>> recent due to a missing header ',' )
>>>>
>>>>> There's some code that's slightly different between the two, and
>>>>> I've not attempted to share that - this should be strictly a no
>>>>> behaviour change set.
>>>>>
>>>>> In addition, the same tables and code are shared in jfs, however
>>>>> there's very little testing available for the unicode in there,
>>>>> so just share the raw data tables.
>>>>>
>>>>> I suspect there's more UCS-2 code that can be shared, in the NLS code
>>>>> and in the UCS-2 code used by the EFI interfaces.
>>>>>
>>>>> Lightly tested with a module and a monolithic build, and just mounting
>>>>> itself.
>>>>>
>>>>> This dupe was found using PMD:
>>>>>    https://pmd.github.io/pmd/pmd_userdocs_cpd.html
>>>>>
>>>>> Dave
>>>>>
>>>>> Version 2
>>>>>    Moved the shared code to fs/nls after v1 feedback.
>>>>>    Renamed shared tables from Smb to Nls prefix
>>>>>    Move UniStrcat as well
>>>>>    Share the JFS tables
>>>>>
>>>>> Dr. David Alan Gilbert (4):
>>>>>    fs/smb: Remove unicode 'lower' tables
>>>>>    fs/smb: Swing unicode common code from smb->NLS
>>>>>    fs/smb/client: Use common code in client
>>>>>    fs/jfs: Use common ucs2 upper case table
>>>>>
>>>>>   fs/jfs/Kconfig               |   1 +
>>>>>   fs/jfs/Makefile              |   2 +-
>>>>>   fs/jfs/jfs_unicode.h         |  17 +-
>>>>>   fs/jfs/jfs_uniupr.c          | 121 -------------
>>>>>   fs/nls/Kconfig               |   8 +
>>>>>   fs/nls/Makefile              |   1 +
>>>>>   fs/nls/nls_ucs2_data.h       |  15 ++
>>>>>   fs/nls/nls_ucs2_utils.c      | 144 +++++++++++++++
>>>>>   fs/nls/nls_ucs2_utils.h      | 285 ++++++++++++++++++++++++++++++
>>>>>   fs/smb/client/Kconfig        |   1 +
>>>>>   fs/smb/client/cifs_unicode.c |   1 -
>>>>>   fs/smb/client/cifs_unicode.h | 330 +----------------------------------
>>>>>   fs/smb/client/cifs_uniupr.h  | 239 -------------------------
>>>>>   fs/smb/server/Kconfig        |   1 +
>>>>>   fs/smb/server/unicode.c      |   1 -
>>>>>   fs/smb/server/unicode.h      | 325 +---------------------------------
>>>>>   fs/smb/server/uniupr.h       | 268 ----------------------------
>>>>>   17 files changed, 467 insertions(+), 1293 deletions(-)
>>>>>   delete mode 100644 fs/jfs/jfs_uniupr.c
>>>>>   create mode 100644 fs/nls/nls_ucs2_data.h
>>>>>   create mode 100644 fs/nls/nls_ucs2_utils.c
>>>>>   create mode 100644 fs/nls/nls_ucs2_utils.h
>>>>>   delete mode 100644 fs/smb/client/cifs_uniupr.h
>>>>>   delete mode 100644 fs/smb/server/uniupr.h
>>>>>
>>>>> --
>>>>> 2.41.0
>>>>>
>>>> --
>>>>   -----Open up your eyes, open up your mind, open up your code -------
>>>> / Dr. David Alan Gilbert    |       Running GNU/Linux       | Happy  \
>>>> \        dave @ treblig.org |                               | In Hex /
>>>>   \ _________________________|_____ http://www.treblig.org   |_______/
>>>
>>>
>>>
>>> --
>>> Thanks,
>>>
>>> Steve
>>
>>
>>
>> --
>> Thanks,
>>
>> Steve