From: Eric Dumazet <edumazet@google.com>
Date: Thu, 20 Dec 2012 17:25:08 +0000 (+0000)
Subject: net: devnet_rename_seq should be a seqcount
X-Git-Tag: v3.8-rc2~19^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30e6c9fa93cf3dbc7cc6df1d748ad25e4264545a;p=pandora-kernel.git

net: devnet_rename_seq should be a seqcount

Using a seqlock for devnet_rename_seq is not a good idea,
as device_rename() can sleep.

As we hold RTNL, we dont need a protection for writers,
and only need a seqcount so that readers can catch a change done
by a writer.

Bug added in commit c91f6df2db4972d3 (sockopt: Change getsockopt() of
SO_BINDTODEVICE to return an interface name)

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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