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Date: Mon, 12 Feb 2007 01:39:28 +0100
From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
To: netfilter-devel@...ts.netfilter.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 2.6.20 05/10] nfnetlink_log: micro-optimization for inst==NULL in nfulnl_recv_config()
Simple micro-optimization: don't call instance_put() on known NULL pointers.
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
--- linux-2.6.20/net/netfilter/nfnetlink_log.c.3 2007-02-11 20:46:33.000000000 +0100
+++ linux-2.6.20/net/netfilter/nfnetlink_log.c 2007-02-11 20:46:26.000000000 +0100
@@ -814,13 +814,13 @@ nfulnl_recv_config(struct sock *ctnl, st
NETLINK_CB(skb).pid);
if (!inst) {
ret = -EINVAL;
- goto out_put;
+ goto out_null;
}
break;
case NFULNL_CFG_CMD_UNBIND:
if (!inst) {
ret = -ENODEV;
- goto out_put;
+ goto out_null;
}
if (inst->peer_pid != NETLINK_CB(skb).pid) {
@@ -850,7 +850,7 @@ nfulnl_recv_config(struct sock *ctnl, st
"group=%u pid=%u =>ENOENT\n",
group_num, NETLINK_CB(skb).pid);
ret = -ENOENT;
- goto out_put;
+ goto out_null;
}
if (inst->peer_pid != NETLINK_CB(skb).pid) {
@@ -897,6 +897,7 @@ nfulnl_recv_config(struct sock *ctnl, st
out_put:
instance_put(inst);
+out_null:
return ret;
}
-
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