diff options
| author | Daniel Wagner <dwagner@suse.de> | 2021-01-27 11:30:33 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-03 23:26:01 +0100 |
| commit | e4405451dd6ef8184f6825c6903be72e30b79e4f (patch) | |
| tree | 0cbf1b61c6cccf82bf9f086fd2ae9807ad9b78ce | |
| parent | 64a4ec1850f779a233ad7d19dc11e340df0d7a37 (diff) | |
nvme-multipath: Early exit if no path is available
[ Upstream commit d1bcf006a9d3d63c1bcb65a993cb13756954cd9c ]
nvme_round_robin_path() should test if the return ns pointer is valid.
nvme_next_ns() will return a NULL pointer if there is no path left.
Fixes: 75c10e732724 ("nvme-multipath: round-robin I/O policy")
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/nvme/host/multipath.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 3968f89f7855..0ac0bd4c65c4 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -233,7 +233,7 @@ static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head, } for (ns = nvme_next_ns(head, old); - ns != old; + ns && ns != old; ns = nvme_next_ns(head, ns)) { if (nvme_path_is_disabled(ns)) continue; |