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authorMartin George <marting@netapp.com>2019-03-27 09:52:56 +0100
committerChristoph Hellwig <hch@lst.de>2019-03-28 18:15:02 +0100
commitcc2278c413c3a06a93c23ee8722e4dd3d621de12 (patch)
tree2a1bda1657d5ea2584dc4cd1d503d65ab0cd118b /drivers/nvme/host/multipath.c
parent988aef9e8b0dd46b55ad08b1522429739e26122d (diff)
downloadlinux-cc2278c413c3a06a93c23ee8722e4dd3d621de12.tar.bz2
nvme-multipath: relax ANA state check
When undergoing state transitions I/O might be requeued, hence we should always call nvme_mpath_set_live() to schedule requeue_work whenever the nvme device is live, independent on whether the old state was live or not. Signed-off-by: Martin George <marting@netapp.com> Signed-off-by: Gargi Srinivas <sring@netapp.com> Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host/multipath.c')
-rw-r--r--drivers/nvme/host/multipath.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 2839bb70badf..f0716f6ce41f 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -404,15 +404,12 @@ static inline bool nvme_state_is_live(enum nvme_ana_state state)
static void nvme_update_ns_ana_state(struct nvme_ana_group_desc *desc,
struct nvme_ns *ns)
{
- enum nvme_ana_state old;
-
mutex_lock(&ns->head->lock);
- old = ns->ana_state;
ns->ana_grpid = le32_to_cpu(desc->grpid);
ns->ana_state = desc->state;
clear_bit(NVME_NS_ANA_PENDING, &ns->flags);
- if (nvme_state_is_live(ns->ana_state) && !nvme_state_is_live(old))
+ if (nvme_state_is_live(ns->ana_state))
nvme_mpath_set_live(ns);
mutex_unlock(&ns->head->lock);
}