Re: [PATCHv4 3/3] blk-mq: Simplify request completion state

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On Mon, Nov 26, 2018 at 09:54:30AM -0700, Keith Busch wrote:
> There are no more users relying on blk-mq request states to prevent
> double completions, so replace the relatively expensive cmpxchg operation
> with WRITE_ONCE.
> 
> Signed-off-by: Keith Busch <keith.busch@xxxxxxxxx>

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>



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