diff options
| author | Martin Wilck <mwilck@suse.com> | 2020-08-06 15:19:32 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-08-22 01:14:27 +0200 |
| commit | e398863b75af24103cee69cc8ee8bf4bc9c8913e (patch) | |
| tree | 2b278284b4d60afe0a8fc5c1ae4c6e8354a5883a /drivers/nvme | |
| parent | nvme: multipath: round-robin: fix single non-optimized path case (diff) | |
| download | linux-e398863b75af24103cee69cc8ee8bf4bc9c8913e.tar.xz linux-e398863b75af24103cee69cc8ee8bf4bc9c8913e.zip | |
nvme: multipath: round-robin: eliminate "fallback" variable
If we find an optimized path, we quit the loop immediately. Thus we can use
just one variable for the next path, slighly simplifying the code.
Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/multipath.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index a64dfff0d0ce..760f625cefc8 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -233,7 +233,7 @@ static struct nvme_ns *nvme_next_ns(struct nvme_ns_head *head, static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head, int node, struct nvme_ns *old) { - struct nvme_ns *ns, *found, *fallback = NULL; + struct nvme_ns *ns, *found = NULL; if (list_is_singular(&head->list)) { if (nvme_path_is_disabled(old)) @@ -252,7 +252,7 @@ static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head, goto out; } if (ns->ana_state == NVME_ANA_NONOPTIMIZED) - fallback = ns; + found = ns; } /* @@ -263,12 +263,11 @@ static struct nvme_ns *nvme_round_robin_path(struct nvme_ns_head *head, */ if (!nvme_path_is_disabled(old) && (old->ana_state == NVME_ANA_OPTIMIZED || - (!fallback && old->ana_state == NVME_ANA_NONOPTIMIZED))) + (!found && old->ana_state == NVME_ANA_NONOPTIMIZED))) return old; - if (!fallback) + if (!found) return NULL; - found = fallback; out: rcu_assign_pointer(head->current_path[node], found); return found; |