linux-ext4 - Re: [PATCH v5 2/4] fs: unicode: Rename function names from utf8 to unicode

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Date:   Mon, 29 Mar 2021 18:53:14 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Shreeya Patel <shreeya.patel@...labora.com>
Cc:     tytso@....edu, adilger.kernel@...ger.ca, jaegeuk@...nel.org,
        chao@...nel.org, krisman@...labora.com, drosen@...gle.com,
        yuchao0@...wei.com, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, kernel@...labora.com,
        andre.almeida@...labora.com
Subject: Re: [PATCH v5 2/4] fs: unicode: Rename function names from utf8 to
 unicode

On Tue, Mar 30, 2021 at 02:12:38AM +0530, Shreeya Patel wrote:
> utf8data.h_shipped has a large database table which is an auto-generated
> decodification trie for the unicode normalization functions and it is not
> necessary to carry this large table in the kernel.
> Goal is to make UTF-8 encoding loadable by converting it into a module
> and adding a unicode subsystem layer between the filesystems and the
> utf8 module.
> This layer will load the module whenever any filesystem that
> needs unicode is mounted.
> utf8-core will be converted into this layer file in the future patches,
> hence rename the function names from utf8 to unicode which will denote the
> functions as the unicode subsystem layer functions and this will also be
> the first step towards the transformation of utf8-core file into the
> unicode subsystem layer file.
> 
> Signed-off-by: Shreeya Patel <shreeya.patel@...labora.com>
> ---
> Changes in v5
>   - Improve the commit message.

This didn't really answer my questions about the reason for this renaming.
Aren't the functions like unicode_casefold() still tied to UTF-8 (as opposed to
e.g. supporting both UTF-8 and UTF-16)?  Is that something you're trying to
change?

- Eric