From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 20 Oct 2011 09:22:18 +0000 (+0000)
Subject: igbvf: fix truesize underestimation
X-Git-Tag: v2.6.39-400.9.0~423^2~19^2~11^2~235
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a78027f0f1d1d0f73ecdc75ca235b67bf7f64733;p=users%2Fjedix%2Flinux-maple.git

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 e404209204cd..57c72dd7ab52 100644
--- 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++;