igbvf: fix truesize underestimation

igbvf allocates half a page per skb fragment. We must account
PAGE_SIZE/2 increments on skb->truesize, not the actual frag length.

(cherry picked from commit 7b8b59617ead5acc6ff041a9ad2ea1fe7a58094f)
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Joe Jin <joe.jin@oracle.com>

diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index e404209204cd3d0cb0ab9697abf1d5617ad8d635..57c72dd7ab520591a2f6b56849030d3ee109db8d 100644 (file)
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -312,7 +312,7 @@ static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
 
                        skb->len += length;
                        skb->data_len += length;
-                       skb->truesize += length;
+                       skb->truesize += PAGE_SIZE / 2;
                }
 send_up:
                i++;