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| author | Ingo Molnar <mingo@kernel.org> | 2014-06-25 07:41:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-06-25 07:41:54 +0200 |
| commit | 98d350cf7ae077eb8083ccc7c1bfc838344ac590 (patch) | |
| tree | dfee7af0eff981b941db6bdbd1d5f039f9f85407 /net/ipv4/udp.c | |
| parent | a10d60c08cc3bbea9195e2b36440f557373623eb (diff) | |
| parent | 0bdb3ccd02509a4380d54efd85effc6a9902d4fd (diff) | |
Merge branch 'perf/urgent' into perf/core, to pick up fixes and refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 185ed3e59802..d92f94b7e402 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1861,6 +1861,10 @@ static struct sock *__udp4_lib_mcast_demux_lookup(struct net *net, unsigned int count, slot = udp_hashfn(net, hnum, udp_table.mask); struct udp_hslot *hslot = &udp_table.hash[slot]; + /* Do not bother scanning a too big list */ + if (hslot->count > 10) + return NULL; + rcu_read_lock(); begin: count = 0; |