From 4e1d4e6c5a448bd114e0cef6311c974cb7c7385e Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Sat, 7 Jul 2007 22:32:03 -0700 Subject: [PATCH] [NETFILTER]: nf_conntrack_expect: avoid useless list walking Don't walk the list when unexpecting an expectation, we already have a reference and the timer check is enough to guarantee that it still is on the list. This comment suggests that it was copied there by mistake from expectation eviction: /* choose the oldest expectation to evict */ Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nf_conntrack_expect.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index 83b5ad85e0..5c8cb0f243 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -165,17 +165,10 @@ static inline int expect_matches(const struct nf_conntrack_expect *a, /* Generally a bad idea to call this: could have matched already. */ void nf_ct_unexpect_related(struct nf_conntrack_expect *exp) { - struct nf_conntrack_expect *i; - write_lock_bh(&nf_conntrack_lock); - /* choose the oldest expectation to evict */ - list_for_each_entry_reverse(i, &nf_ct_expect_list, list) { - if (expect_matches(i, exp) && del_timer(&i->timeout)) { - nf_ct_unlink_expect(i); - write_unlock_bh(&nf_conntrack_lock); - nf_ct_expect_put(i); - return; - } + if (del_timer(&exp->timeout)) { + nf_ct_unlink_expect(exp); + nf_ct_expect_put(exp); } write_unlock_bh(&nf_conntrack_lock); } -- 2.39.5