net: num_dma_maps is not used

Get rid of num_dma_maps in struct skb_shared_info, as it seems unused.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 7305da9..7485058 100644 (file)
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -194,9 +194,6 @@ struct skb_shared_info {
        unsigned short  gso_type;
        __be32          ip6_frag_id;
        union skb_shared_tx tx_flags;
-#ifdef CONFIG_HAS_DMA
-       unsigned int    num_dma_maps;
-#endif
        struct sk_buff  *frag_list;
        struct skb_shared_hwtstamps hwtstamps;
        skb_frag_t      frags[MAX_SKB_FRAGS];

diff --git a/net/core/skb_dma_map.c b/net/core/skb_dma_map.c
index 8623492..7adb623 100644 (file)
--- a/net/core/skb_dma_map.c
+++ b/net/core/skb_dma_map.c
@@ -30,7 +30,6 @@ int skb_dma_map(struct device *dev, struct sk_buff *skb,
                        goto unwind;
                sp->dma_maps[i + 1] = map;
        }
-       sp->num_dma_maps = i + 1;
 
        return 0;