Revert "tun: remove useless codes in tun_chr_aio_read() and tun_recvmsg()"

This reverts commit 73713357ab.

MSG_TRUNC handling was broken and is going to be fixed in
the 'net' tree, so revert this.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2013-12-10 22:05:45 -05:00
commit 42404c0915