Commit 3f6e3246 authored by Martin Wilck's avatar Martin Wilck Committed by Christoph Hellwig
Browse files

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: 75c10e73 ("nvme-multipath: round-robin I/O policy")
Signed off-by: default avatarMartin Wilck <mwilck@suse.com>
Signed-off-by: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 9f98772b

drivers/nvme/host/multipath.c

+6 −0
Original line number Diff line number Diff line
@@ -255,6 +255,12 @@ static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head, 
			fallback = ns;

	}



	/* No optimized path found, re-check the current path */

	if (!nvme_path_is_disabled(old) &&

	    old->ana_state == NVME_ANA_OPTIMIZED) {

		found = old;

		goto out;

	}

	if (!fallback)

		return NULL;

	found = fallback;