linux-ext4 - Re: [PATCH v5 01/10] fs: Expose helper to check if a directory needs casefolding

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Date:   Mon, 14 Aug 2023 12:14:26 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Gabriel Krisman Bertazi <krisman@...e.de>
Cc:     viro@...iv.linux.org.uk, brauner@...nel.org, tytso@....edu,
        jaegeuk@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH v5 01/10] fs: Expose helper to check if a directory needs
 casefolding

On Mon, Aug 14, 2023 at 11:02:38AM -0400, Gabriel Krisman Bertazi wrote:
> 
> Also, this patchset has been sitting for years before the latest
> discussions, and I'm tired of it, so I'm happy to keep this
> discussion for another time.  Will drop this patch and just check
> IS_CASEFOLDED in ecryptfs for the next iteration.
> 
> I'll follow up with another case-insensitive cleanup patchset I've been
> siting on forever, which includes this patch and will restart this
> discussion, among others.
> 

Well, as we know unfortunately filesystem developers are in short supply, and
doing proper reviews (identifying issues and working closely with the patchset
author over multiple iterations to address them, as opposed to just slapping on
a Reviewed-by) is very time consuming.  Earlier this year I tried to get the
Android Systems team, which is ostensibly responsible for Android's use of
casefolding, to take a look, but their entire feedback was just "looks good to
me".  Also, the fact that this patchset originally excluded the casefold+encrypt
case technically made it not applicable to Android, and discouraged me from
taking a look since encryption is my focus.  Sorry for not taking a look sooner.

Anyway, thanks for doing this, and I think it's near the finish line now.  Once
you address the latest feedback and get a couple acks, I think that Christian
should take this through the VFS tree.  BTW, in my opinion, as the maintainer of
the "Unicode subsystem" you are also authorized to send a pull request for this
to Linus yourself.  But VFS does seem ideal in this case, given the diffstat,
and Christian has been fairly active with taking patches.

- Eric