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

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Message-ID: <ZLhchajZaWEVM6D7@gallifrey>
Date:   Wed, 19 Jul 2023 21:58:29 +0000
From:   "Dr. David Alan Gilbert" <linux@...blig.org>
To:     Steve French <smfrench@...il.com>
Cc:     linkinjeon@...nel.org, tom@...pey.com, dave.kleikamp@...cle.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

* 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

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
-- 
 -----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   |_______/