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Date: Tue, 1 Dec 2015 10:10:12 -0800
From: Christoph Hellwig <hch@infradead.org>
Subject: sys_copy_file_range tests
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To: Anna.Schumaker@netapp.com
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Hi Anna,

I recently looked into allowing sys_copy_file_range to use the
clone_file_range operation so that file systems don't have to support
two methods if they only support clone-like features, and one thing
I noticed is that unlike for clone there are no tests for
clone_file_range in xfstests, and I couldn't find a testsuite anywhere
else either.  Do you have any good tests available to verify the
implementation?