[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, 3 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 5a96d7611af1..c12e5ea61819 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -4467,9 +4467,7 @@ bnx2_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
         struct bnx2 *bp = netdev_priv(dev);
 
         bnx2_netif_stop(bp);
-
-        if (bp->vlgrp)
-                bp->vlgrp->vlan_devices[vid] = NULL;
+        vlan_group_set_device(bp->vlgrp, vid, NULL);
         bnx2_set_rx_mode(dev);
 
         bnx2_netif_start(bp);