Re: [Jfs-discussion] [PATCH 0/3] dedupe smb unicode files

From: Dave Kleikamp
Date: Wed Jun 28 2023 - 10:04:02 EST


On 6/28/23 8:46AM, Dr. David Alan Gilbert wrote:
* Dr. David Alan Gilbert (dave@xxxxxxxxxxx) wrote:
* Tom Talpey (tom@xxxxxxxxxx) wrote:
On 6/27/2023 9:14 PM, linux@xxxxxxxxxxx wrote:
From: "Dr. David Alan Gilbert" <linux@xxxxxxxxxxx>

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.

Sure.

Actually, would you be ok with smb_unicode_common ? The reason is that
you end up with a module named unicode_common that sounds too generic.

I'd suggest make it generic and move it to fs/nls/. I'd run it by the nls maintainers, but I don't think there are any.

Shaggy


Dave

Dave

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

--
-----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 |_______/