af_iucv: use paged SKBs for big inbound messages
authorEugene Crosser <Eugene.Crosser@ru.ibm.com>
Mon, 13 Jun 2016 16:46:16 +0000 (18:46 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 15 Jun 2016 19:21:05 +0000 (12:21 -0700)
commita006353a9a8d9e28d35f94bfc97e9573d6ee28aa
tree3b85d70c294871dca06b87e8cad8c627d10f11cc
parent291759a57532b7940b6e52c54ceebd6b8d9e113e
af_iucv: use paged SKBs for big inbound messages

When an inbound message is bigger than a page, allocate a paged SKB,
and subsequently use IUCV receive primitive with IPBUFLST flag.
This relaxes the pressure to allocate big contiguous kernel buffers.

Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/iucv/af_iucv.c