From 6be547a61d6220199826070cda792297c3d15994 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@linux.intel.com>
Date: Thu, 28 Aug 2008 01:09:54 -0700
Subject: [PATCH] inet_diag: Add empty bucket optimization to inet_diag too
Skip quickly over empty buckets in inet_diag.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/inet_diag.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index c10036e7a46..89cb047ab31 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -782,11 +782,15 @@ skip_listen_ht:
struct sock *sk;
struct hlist_node *node;
+ num = 0;
+
+ if (hlist_empty(&head->chain) && hlist_empty(&head->twchain))
+ continue;
+
if (i > s_i)
s_num = 0;
read_lock_bh(lock);
- num = 0;
sk_for_each(sk, node, &head->chain) {
struct inet_sock *inet = inet_sk(sk);
--
2.25.4