[VLAN]: Avoid a 4-order allocation.

This patch splits the vlan_group struct into a multi-allocated struct. On
x86_64, the size of the original struct is a little more than 32KB, causing
a 4-order allocation, which is prune to problems caused by buddy-system
external fragmentation conditions.

I couldn't just use vmalloc() because vfree() cannot be called in the
softirq context of the RCU callback.

Signed-off-by: Dan Aloni <da-x@monatomic.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c
index 9c399aaefbdd..962c954c2d56 100644
--- a/drivers/net/amd8111e.c
+++ b/drivers/net/amd8111e.c
@@ -1737,8 +1737,7 @@ static void amd8111e_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid
 {
         struct amd8111e_priv *lp = netdev_priv(dev);
         spin_lock_irq(&lp->lock);
-        if (lp->vlgrp)
-                lp->vlgrp->vlan_devices[vid] = NULL;
+        vlan_group_set_device(lp->vlgrp, vid, NULL);
         spin_unlock_irq(&lp->lock);
 }
 #endif