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[VLAN]: Avoid a 4-order allocation.

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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>
This commit is contained in:
Dan Aloni
2007-03-02 20:44:51 -08:00
committed by David S. Miller
parent b5284e5aa9
commit 5c15bdec5c
22 changed files with 102 additions and 80 deletions
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3
drivers/net/8139cp.c
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@ -448,8 +448,7 @@ static void cp_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
spin_lock_irqsave(&cp->lock, flags);
cp->cpcmd &= ~RxVlanOn;
cpw16(CpCmd, cp->cpcmd);
if (cp->vlgrp)
cp->vlgrp->vlan_devices[vid] = NULL;
vlan_group_set_device(cp->vlgrp, vid, NULL);
spin_unlock_irqrestore(&cp->lock, flags);
}
#endif /* CP_VLAN_TAG_USED */