forked from Minki/linux
nvme-multipath: fix logic for non-optimized paths
Handle the special case where we have exactly one optimized path,
which we should keep using in this case.
Fixes: 75c10e7327
("nvme-multipath: round-robin I/O policy")
Signed off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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9f98772ba3
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3f6e3246db
@ -255,6 +255,12 @@ static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head,
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fallback = ns;
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}
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/* No optimized path found, re-check the current path */
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if (!nvme_path_is_disabled(old) &&
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old->ana_state == NVME_ANA_OPTIMIZED) {
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found = old;
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goto out;
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}
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if (!fallback)
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return NULL;
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found = fallback;
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