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Date: Sun, 8 Jul 2018 09:00:00 -0700
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH RFC 8/8] xfs: skip local format inode for reflinking
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To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Shan Hai <shan.hai@oracle.com>, linux-xfs@vger.kernel.org

On Thu, Jul 05, 2018 at 08:26:53PM -0700, Darrick J. Wong wrote:
> What happens if someone tries to reflink and either src or dest are an
> inline file?

Very good question.  I'd also like to see how btrfs and gfs2
handle that case, as it would be good if all Linux file systems
behave the same way.