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nvme: take node locality into account when selecting a path
Make current_path an array with an entry for every possible node, and cache the best path on a per-node basis. Take the node distance into account when selecting it. This is primarily useful for dual-ported PCIe devices which are connected to PCIe root ports on different sockets. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Hannes Reinecke <hare@suse.com>
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Christoph Hellwig
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Oct 1, 2018
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