nvme: cleanup nvme_req_needs_retry
Don't pass the status explicitly but derive it from the requeust, and unwind the complex condition to be more readable. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de> Reviewed-by: NSagi Grimberg <sagi@grimberg.me> Signed-off-by: NJens Axboe <axboe@fb.com>
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