Re: [PATCH 5/7] [NET] skbuff: Add skb_cow_head

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 31 Aug 2007 17:09:15 +0800

[NET] skbuff: Add skb_cow_head

This patch adds an optimised version of skb_cow that avoids the copy if
the header can be modified even if the rest of the payload is cloned.

This can be used in encapsulating paths where we only need to modify the
header.  As it is, this can be used in PPPOE and bridging.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Applied, thanks Herbert.