[tip:core/locking] net: ip_append_data() optim

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Commit-ID:  ec550d246e38e1b4ea8604b5c71ccb72e38f3290
Gitweb:     http://git.kernel.org/tip/ec550d246e38e1b4ea8604b5c71ccb72e38f3290
Author:     Eric Dumazet <eric.dumazet@xxxxxxxxx>
AuthorDate: Tue, 24 Aug 2010 14:45:09 -0700
Committer:  David S. Miller <davem@xxxxxxxxxxxxx>
CommitDate: Tue, 24 Aug 2010 14:45:09 -0700

net: ip_append_data() optim

Compiler is not smart enough to avoid a conditional branch.

Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
 net/ipv4/ip_output.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 6d2753c..e427620 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -837,10 +837,9 @@ int ip_append_data(struct sock *sk,
 		inet->cork.length = 0;
 		sk->sk_sndmsg_page = NULL;
 		sk->sk_sndmsg_off = 0;
-		if ((exthdrlen = rt->dst.header_len) != 0) {
-			length += exthdrlen;
-			transhdrlen += exthdrlen;
-		}
+		exthdrlen = rt->dst.header_len;
+		length += exthdrlen;
+		transhdrlen += exthdrlen;
 	} else {
 		rt = (struct rtable *)inet->cork.dst;
 		if (inet->cork.flags & IPCORK_OPT)
--
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