On Sat, 24 May 2014 17:50:55 +0100, Filipe David Borba Manana wrote:

> This is a test to verify that the btrfs ioctl clone operation is
> able to clone extents of a file to different positions of the file,
> that is, the source and target files are the same. Existing tests
> only cover the case where the source and target files are different.
> 
> Signed-off-by: Filipe David Borba Manana <fdman...@gmail.com>
> ---
> 
> V2: Made the test exercise a more complex code path in the btrfs ioctl clone
>     code. Now we have extents with different sizes and make the cloner process
>     partial extents and split existing extents with smaller ones.
> 
> V3: Add tests to verify that after writing to a cloned extent, the original
>     extent isn't modified, that defragmenting a file with cloned extents
>     doesn't change the file contents and that all the tests have the same
>     exact semantics (as observed by an application/user) regardless of the
>     following options (and any combination): cow/nodatacow/compression.

Looks good.

Reviewed-by: David Disseldorp <dd...@suse.de>
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