kfree(head);
}
+static bool nvme_tryget_ns_head(struct nvme_ns_head *head)
+{
+ return kref_get_unless_zero(&head->ref);
+}
+
static void nvme_put_ns_head(struct nvme_ns_head *head)
{
kref_put(&head->ref, nvme_free_ns_head);
#ifdef CONFIG_NVME_MULTIPATH
static int nvme_ns_head_open(struct block_device *bdev, fmode_t mode)
{
- struct nvme_ns_head *head = bdev->bd_disk->private_data;
-
- if (!kref_get_unless_zero(&head->ref))
+ if (!nvme_tryget_ns_head(bdev->bd_disk->private_data))
return -ENXIO;
return 0;
}
lockdep_assert_held(&subsys->lock);
list_for_each_entry(h, &subsys->nsheads, entry) {
- if (h->ns_id == nsid && kref_get_unless_zero(&h->ref))
+ if (h->ns_id == nsid && nvme_tryget_ns_head(h))
return h;
}