From: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
As Stephen pointed out the default initial size is more than we need, so
let's start small (4 elements, thus nelem_hint = 3). Also limit the hash
locks to the number of CPUs as we don't need any write-side scaling and
this looks like the minimum.
Signed-off-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
---
net/bridge/br_vlan.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index e227164bc3e1..283d012c3d89 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -19,6 +19,8 @@ static const struct rhashtable_params br_vlan_rht_params = {
.head_offset = offsetof(struct net_bridge_vlan, vnode),
.key_offset = offsetof(struct net_bridge_vlan, vid),
.key_len = sizeof(u16),
+ .nelem_hint = 3,
+ .locks_mul = 1,
.max_size = VLAN_N_VID,
.obj_cmpfn = br_vlan_cmp,
.automatic_shrinking = true,
--
2.4.3
