diff options
Diffstat (limited to 'drivers/nvme/target/core.c')
| -rw-r--r-- | drivers/nvme/target/core.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index cbcd19f52121..42e8565015d5 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -337,9 +337,13 @@ static void nvmet_ns_dev_disable(struct nvmet_ns *ns) int nvmet_ns_enable(struct nvmet_ns *ns) { struct nvmet_subsys *subsys = ns->subsys; - int ret = 0; + int ret; mutex_lock(&subsys->lock); + ret = -EMFILE; + if (subsys->nr_namespaces == NVMET_MAX_NAMESPACES) + goto out_unlock; + ret = 0; if (ns->enabled) goto out_unlock; @@ -374,6 +378,7 @@ int nvmet_ns_enable(struct nvmet_ns *ns) list_add_tail_rcu(&ns->dev_link, &old->dev_link); } + subsys->nr_namespaces++; nvmet_ns_changed(subsys, ns->nsid); ns->enabled = true; @@ -414,6 +419,7 @@ void nvmet_ns_disable(struct nvmet_ns *ns) percpu_ref_exit(&ns->ref); mutex_lock(&subsys->lock); + subsys->nr_namespaces--; nvmet_ns_changed(subsys, ns->nsid); nvmet_ns_dev_disable(ns); out_unlock: |