[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>

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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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25

include/linux/if_vlan.h

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