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Date:   Wed, 20 Jul 2022 09:06:21 -0700
From:   Christoph Hellwig <>
To:     Benjamin Coddington <>
Cc:     Jeff Layton <>,
        Lukas Czerner <>,,,,
        linux-fsdevel <>
Subject: Re: should we make "-o iversion" the default on ext4 ?

On Wed, Jul 20, 2022 at 11:56:12AM -0400, Benjamin Coddington wrote:
> > Another idea would be to introduce new mount options for this, but
> > that's kind of nasty from a UI standpoint.
> Is it safe to set SB_I_VERSION at export time?  If so, export_operations
> could grow an ->enable_iversion().

No, it's not.  Think of unexporting, modifying thing and re-exporting
and now the client will see the same change counter for a modified

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