linux-kernel - Re: [PATCH 0/3] dedupe smb unicode files

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Date:   Wed, 28 Jun 2023 09:15:49 -0400
From:   Tom Talpey <tom@...pey.com>
To:     linux@...blig.org, sfrench@...ba.org, linkinjeon@...nel.org,
        linux-cifs@...r.kernel.org
Cc:     jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] dedupe smb unicode files

On 6/27/2023 9:14 PM, 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.
> 
> 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.
> 
> I'd love to also boil out the same code from fs/jfs/ - but that's
> a thought for another time (and harder since there's no good test
> for it).
> 
> 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
> 
> Dr. David Alan Gilbert (3):
>    fs/smb: Remove unicode 'lower' tables
>    fs/smb: Swing unicode common code from server->common
>    fs/smb/client: Use common code in client
> 
>   fs/smb/client/cifs_unicode.c                  |   1 -
>   fs/smb/client/cifs_unicode.h                  | 313 +-----------------
>   fs/smb/client/cifs_uniupr.h                   | 239 -------------
>   fs/smb/common/Makefile                        |   1 +
>   .../uniupr.h => common/cifs_unicode_common.c} | 156 +--------
>   fs/smb/common/cifs_unicode_common.h           | 279 ++++++++++++++++

So far so good, but please drop the "cifs_" prefix from this new file's
name, since its contents apply to later smb dialects as well.

Tom.

>   fs/smb/server/unicode.c                       |   1 -
>   fs/smb/server/unicode.h                       | 301 +----------------
>   8 files changed, 298 insertions(+), 993 deletions(-)
>   delete mode 100644 fs/smb/client/cifs_uniupr.h
>   rename fs/smb/{server/uniupr.h => common/cifs_unicode_common.c} (50%)
>   create mode 100644 fs/smb/common/cifs_unicode_common.h
>