netdev - [PATCH] net: respect GFP_DMA in __netdev_alloc

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Date:	Mon, 16 Jul 2012 13:15:52 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [PATCH] net: respect GFP_DMA in __netdev_alloc_skb()

From: Eric Dumazet <edumazet@...gle.com>

Few drivers use GFP_DMA allocations, and netdev_alloc_frag()
doesn't allocate pages in DMA zone.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/core/skbuff.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 46a3d23..d124306 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -353,7 +353,7 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
 	unsigned int fragsz = SKB_DATA_ALIGN(length + NET_SKB_PAD) +
 			      SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 
-	if (fragsz <= PAGE_SIZE && !(gfp_mask & __GFP_WAIT)) {
+	if (fragsz <= PAGE_SIZE && !(gfp_mask & (__GFP_WAIT | GFP_DMA))) {
 		void *data = netdev_alloc_frag(fragsz);
 
 		if (likely(data)) {


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