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Date:   Wed, 7 Dec 2022 12:17:27 +0100
From:   Jan Kara <>
To:     Christoph Hellwig <>
Cc:     Jan Kara <>, Theodore Ts'o <>,,
        "Ritesh Harjani (IBM)" <>,
        Christoph Hellwig <>,
        Matthew Wilcox <>,
Subject: Re: [PATCH v3 11/12] ext4: Stop providing .writepage hook

On Tue 06-12-22 23:38:50, Christoph Hellwig wrote:
> On Tue, Dec 06, 2022 at 11:52:25AM +0100, Jan Kara wrote:
> > I don't expect any objection. The only reason we didn't export that
> > function when I've added it was that only blkdev code was using it and that
> > cannot be compiled as a module. Should I send a patch to 
> > 
> > I've added a patch to the series to export this function. It is attached.
> > 
> > I can also repost the whole series if these are the only changes that block
> > the inclusion.
> I'd do an EXPORT_SYMBOL_GPL, but otherwise the export looks fine, and it
> would be good to get this conversion going!

OK, I've just copied how buffer_migrate_folio() is exported but I don't
mind a GPL export. I'll change it and push out new version of the series.

Jan Kara <>

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