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Date:	Tue, 17 May 2016 02:11:33 -0700
From:	Christoph Hellwig <>
To:	Richard Weinberger <>
Cc:	Christoph Hellwig <>,,,,,,,,,,,,,,,,,,,,
Subject: Re: UBIFS and page migration (take 3)

On Mon, May 16, 2016 at 02:44:49PM +0200, Richard Weinberger wrote:
> Is this a Reviewed-by? :-)

I don't know the code well enough to feel qualified for a review.  But
you get my:

Acked-by: Christoph Hellwig <>

> There are two classes of issues:
> a) filesystems that use buffer_migrate_page() but shouldn't
> b) filesystems that don't implement ->migratepage() and fallback_migrate_page()
>    is not suitable.
> As starter we could kill the automatic assignment of fallback_migrate_page() and
> non-buffer_head filesystems need to figure out whether fallback_migrate_page()
> is suitable or not.
> UBIFS found out the hard way. ;-\

Yes, I think this would be a good start.

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