netdev - Re: [RFC] NETDEV_UNREGISTER_BATCH seems unused nowaday ?

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Message-Id: <20120810.034211.994338127277150687.davem@davemloft.net>
Date:	Fri, 10 Aug 2012 03:42:11 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, ebiederm@...ssion.com
Subject: Re: [RFC] NETDEV_UNREGISTER_BATCH seems unused nowaday ?

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 10 Aug 2012 11:27:04 +0200

> NETDEV_UNREGISTER_BATCH seems unused we can probably remove it.

Indeed, the routing cache was the final real user.

> I am tracking a device refcount issue, delaying net device dismantle by
> 1 second in netdev_wait_allrefs()
> 
> I guess we need to add a notifier called _after_ the final
> synchronize_net() in rollback_registered_many()

It's essentially caused by DST_GC_INC, right?
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