Re: [PATCH 0/9] target: Add support for COMPARE_AND_WRITE (VAAI)emulation

[Christoph Hellwig]

On Tue, Aug 20, 2013 at 08:07:51PM +0000, Nicholas A. Bellinger wrote:
> 
> It's also currently lacking the necessary sychronization between I/O
> submission of COMPARE_AND_WRITE verify instance and write instance
> user data, which is still being worked on in order to avoid additional
> overhead in the main I/O fast path.

I don't think merging such a non-conforming implementation makes any sense.

Also for a complex command like this with all it's race potential I would
really like to see some test cases to go along with it.

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