From b0d113b96e7c56d524fb08d8722eaf7c668b5498 Mon Sep 17 00:00:00 2001
From: glebius <glebius@FreeBSD.org>
Date: Mon, 4 Jun 2012 14:18:13 +0000
Subject: Microoptimisation of code from r236560, also coming from Nginx Inc.

Submitted by:	ru
---
 sys/kern/uipc_syscalls.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'sys/kern/uipc_syscalls.c')

diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c
index 16933fe..1a30cef 100644
--- a/sys/kern/uipc_syscalls.c
+++ b/sys/kern/uipc_syscalls.c
@@ -2184,12 +2184,10 @@ retry_space:
 			/* Append to mbuf chain. */
 			if (mtail != NULL) {
 				mtail->m_next = m0;
-			} else {
-				if (m != NULL)
-					m_cat(m, m0);
-				else
-					m = m0;
-			}
+			} else if (m != NULL)
+				m_last(m)->m_next = m0;
+			else
+				m = m0;
 			mtail = m0;
 
 			/* Keep track of bits processed. */
-- 
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