linux-kernel - Re: 2.6.18-rc1-mm2

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Date:	Sat, 15 Jul 2006 20:34:38 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	akpm@...l.org, linux-kernel@...r.kernel.org
Subject: Re: 2.6.18-rc1-mm2

On Sat, Jul 15, 2006 at 08:32:07PM +1000, herbert wrote:
> 
> Sure, in fact there was a name clash as well with __ret and
> I forgot to update the arch-specific versions.
> 
> [PATCH] Let WARN_ON/WARN_ON_ONCE return the condition

Here's a patch to make dev.c use this.

[NET]: Use WARN_ON_ONCE for checksum checks

Use the WARN_ON_ONCE macro rather than open-coding it.

Signed-off-by: Herbert Xu herbert@...dor.apana.org.au>

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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--
diff --git a/net/core/dev.c b/net/core/dev.c
index 4d2b516..2ea983a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1165,12 +1165,7 @@ int skb_checksum_help(struct sk_buff *sk
 	if (inward)
 		goto out_set_summed;
 
-	if (unlikely(skb_shinfo(skb)->gso_size)) {
-		static int warned;
-
-		WARN_ON(!warned);
-		warned = 1;
-
+	if (WARN_ON_ONCE(skb_shinfo(skb)->gso_size)) {
 		/* Let GSO fix up the checksum. */
 		goto out_set_summed;
 	}
@@ -1219,12 +1214,7 @@ struct sk_buff *skb_gso_segment(struct s
 	skb->mac_len = skb->nh.raw - skb->data;
 	__skb_pull(skb, skb->mac_len);
 
-	if (unlikely(skb->ip_summed != CHECKSUM_HW)) {
-		static int warned;
-
-		WARN_ON(!warned);
-		warned = 1;
-
+	if (WARN_ON_ONCE(skb->ip_summed != CHECKSUM_HW)) {
 		if (skb_header_cloned(skb) &&
 		    (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
 			return ERR_PTR(err);
-
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