tree 71b2557ea8cbafc6f6080614b43f86a15df54b9c
parent 7256eac13b0e6884355cf40f75db05785d18f5da
author Ken-ichirou MATSUZAWA <chamaken@gmail.com> 1454031950 +0900
committer David S. Miller <davem@davemloft.net> 1454127917 -0800

netlink: not trim skb for mmaped socket when dump

We should not trim skb for mmaped socket since its buf size is fixed
and userspace will read as frame which data equals head. mmaped
socket will not call recvmsg, means max_recvmsg_len is 0,
skb_reserve was not called before commit: db65a3aaf29e.

Fixes: db65a3aaf29e (netlink: Trim skb to alloc size to avoid MSG_TRUNC)
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>