+ if (zero_ref) {
+ /*
+ * Caller requires a page with zero ref count.
+ * We will drop ref count here. If someone else is holding
+ * a ref, the page will be freed when they drop it. Abuse
+ * temporary page flag to accomplish this.
+ */
+ SetHPageTemporary(page);
+ if (!put_page_testzero(page)) {
+ /*
+ * Unexpected inflated ref count on freshly allocated
+ * huge. Retry once.
+ */
+ pr_info("HugeTLB unexpected inflated ref count on freshly allocated page\n");
+ spin_unlock_irq(&hugetlb_lock);
+ if (retry)
+ return NULL;
+
+ retry = true;
+ goto retry;
+ }
+ ClearHPageTemporary(page);
+ }
+
+ h->surplus_huge_pages++;
+ h->surplus_huge_pages_node[page_to_nid(page)]++;
+