diff --git a/drivers/nvme/target/pr.c b/drivers/nvme/target/pr.c
index 5dd2f3553d8c..0948a690a1c0 100644
--- a/drivers/nvme/target/pr.c
+++ b/drivers/nvme/target/pr.c
@@ -355,9 +355,15 @@ static u16 nvmet_pr_replace(struct nvmet_req *req,
 	u16 status = NVME_SC_RESERVATION_CONFLICT | NVME_STATUS_DNR;
 	struct nvmet_ctrl *ctrl = req->sq->ctrl;
 	struct nvmet_pr *pr = &req->ns->pr;
-	struct nvmet_pr_registrant *reg;
+	struct nvmet_pr_registrant *reg, *new = NULL;
 	u64 nrkey = le64_to_cpu(d->nrkey);
 
+	if (ignore_key && nrkey) {
+		new = kzalloc_obj(*new);
+		if (!new)
+			return NVME_SC_INTERNAL;
+	}
+
 	down(&pr->pr_sem);
 	list_for_each_entry_rcu(reg, &pr->registrant_list, entry) {
 		if (uuid_equal(&reg->hostid, &ctrl->hostid)) {
@@ -365,9 +371,26 @@ static u16 nvmet_pr_replace(struct nvmet_req *req,
 				status = nvmet_pr_update_reg_attr(pr, reg,
 						nvmet_pr_update_reg_rkey,
 						&nrkey);
-			break;
+			goto free_data;
 		}
 	}
+
+	if (ignore_key) {
+		if (!nrkey) {
+			status = NVME_SC_INVALID_FIELD | NVME_STATUS_DNR;
+			goto free_data;
+		}
+		INIT_LIST_HEAD(&new->entry);
+		new->rkey = nrkey;
+		uuid_copy(&new->hostid, &ctrl->hostid);
+		list_add_tail_rcu(&new->entry, &pr->registrant_list);
+		status = NVME_SC_SUCCESS;
+		goto out;
+	}
+
+free_data:
+	kfree(new);
+out:
 	up(&pr->pr_sem);
 	return status;
 }