Merge branch 'pskb_put'

Merge branch 'pskb_put'

Mathias Krause says:

====================
move pskb_put (was: IPsec improvements)

This series moves pskb_put() to the core code, making the code
duplication in caif obsolete (patches 1 and 2).
Patch 3 fixes a few kernel-doc issues.

v2 of this series does no longer contain the skb_cow_data() patch and
therefore no performance improvements for IPsec. The change is still
under discussion, but otherwise independent from the above changes.

Please apply!

v2:
- kernel-doc fixes for pskb_put, as noticed by Ben
- dropped skb_cow_data patch as it's still discussed
- added a kernel-doc fixes patch (patch 3)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>