linux-ext4 - Re: [PATCH 05/11] unicode: pass a UNICODE_AGE() tripple to utf8

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Date:   Tue, 24 Aug 2021 09:34:18 +0200
From:   Christoph Hellwig <hch@....de>
To:     Gabriel Krisman Bertazi <krisman@...labora.com>
Cc:     Christoph Hellwig <hch@....de>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH 05/11] unicode: pass a UNICODE_AGE() tripple to
 utf8_load

On Mon, Aug 23, 2021 at 11:02:52AM -0400, Gabriel Krisman Bertazi wrote:
> I remember this fallback was specifically requested during a review or
> in a discussion, but I honestly cannot remember the reason.
> 
> One advantage I can think is if we have a filesystem that requires a
> newer unicode version than the current kernel has, and strict mode flag
> is set, we can fallback to the latest version and still mount the fs
> read/write.

Well, that seems a little pointless.  If we add such a file system
we can just upgrade the unіcode data files.  (FYI, I did an upgrade
to 1.13 to test this series, but without any file system that needs
it I did not bother to submit the patch).