[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>
diff --git a/drivers/net/acenic.c b/drivers/net/acenic.c
index 33c6645..7138e0e 100644
--- a/drivers/net/acenic.c
+++ b/drivers/net/acenic.c
@@ -2293,10 +2293,7 @@
local_irq_save(flags);
ace_mask_irq(dev);
-
- if (ap->vlgrp)
- ap->vlgrp->vlan_devices[vid] = NULL;
-
+ vlan_group_set_device(ap->vlgrp, vid, NULL);
ace_unmask_irq(dev);
local_irq_restore(flags);
}