net: hns3: do not reuse pfmemalloc pages

[platform/kernel/linux-rpi.git] / drivers / net / ethernet / hisilicon / hns3 / hns3_enet.c

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index f579028..06c58ed 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2627,6 +2627,12 @@ static void hns3_nic_alloc_rx_buffers(struct hns3_enet_ring *ring,
        writel_relaxed(i, ring->tqp->io_base + HNS3_RING_RX_RING_HEAD_REG);
 }
 
+static bool hns3_page_is_reusable(struct page *page)
+{
+       return page_to_nid(page) == numa_mem_id() &&
+               !page_is_pfmemalloc(page);
+}
+
 static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
                                struct hns3_enet_ring *ring, int pull_len,
                                struct hns3_desc_cb *desc_cb)
@@ -2641,7 +2647,7 @@ static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
        /* Avoid re-using remote pages, or the stack is still using the page
         * when page_offset rollback to zero, flag default unreuse
         */
-       if (unlikely(page_to_nid(desc_cb->priv) != numa_mem_id()) ||
+       if (unlikely(!hns3_page_is_reusable(desc_cb->priv)) ||
            (!desc_cb->page_offset && page_count(desc_cb->priv) > 1))
                return;
 
@@ -2860,7 +2866,7 @@ static int hns3_alloc_skb(struct hns3_enet_ring *ring, unsigned int length,
                memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
 
                /* We can reuse buffer as-is, just make sure it is local */
-               if (likely(page_to_nid(desc_cb->priv) == numa_mem_id()))
+               if (likely(hns3_page_is_reusable(desc_cb->priv)))
                        desc_cb->reuse_flag = 1;
                else /* This page cannot be reused so discard it */
                        put_page(desc_cb->priv);