Re: [PATCH net-next] net: linkwatch: allow vlans to get carrierchanges faster

[David Miller]

From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Wed, 31 Aug 2011 11:31:58 +0200

> There is a time-lag of IFF_RUNNING flag consistency between vlan and
> real devices when the real devices are in problem such as link or cable
> broken.
> 
> This leads to a degradation of Availability such as a delay of failover
> in HA systems using vlan since the detection of the problem at real
> device is delayed.
> 
> We can avoid the linkwatch delay (~1 sec) for devices linked to another
> ones, since delay is already done for the realdev.
> 
> Based on a previous patch from Mitsuo Hayasaka
> 
> Reported-by: Mitsuo Hayasaka <mitsuo.hayasaka.hu@xxxxxxxxxxx>
> Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>

Applied.
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