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openwrt-xburst/target/linux/ixp4xx/patches-2.6.30/600-dma_performance.patch

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--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -260,6 +260,10 @@ struct sk_buff *__alloc_skb(unsigned int
if (!skb)
goto out;
+#ifdef CONFIG_ARCH_IXP4XX
+ gfp_mask |= GFP_DMA;
+#endif
+
size = SKB_DATA_ALIGN(size);
data = kmalloc_node_track_caller(size + sizeof(struct skb_shared_info),
gfp_mask, node);