From: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue, 20 Jan 2009 11:03:21 +0000 (+0000)
Subject: tun: Move read_wait into tun_file
X-Git-Tag: v2.6.30-rc1~662^2~917
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2430de37ef0bc0799ffba7b5219d38ca417eb76;p=pandora-kernel.git

tun: Move read_wait into tun_file

The poll interface requires that the waitqueue exist while the struct
file is open.  In the rare case when a tun device disappears before
the tun file closes we fail to provide this property, so move
read_wait.

This is safe now that tun_net_xmit is atomic with tun_detach.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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