netdev - Re: [RFC] dev->refcnt long term holder

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Message-ID: <20091117083748.GA12743@gondor.apana.org.au>
Date:	Tue, 17 Nov 2009 16:37:49 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, shemminger@...tta.com,
	netdev@...r.kernel.org
Subject: Re: [RFC] dev->refcnt long term holder

On Tue, Nov 17, 2009 at 12:30:19AM -0800, David Miller wrote:
> 
> 1) PHY events in most drivers are handled in softirq (NAPI ->poll())
>    or a workqueue of some sort these days.  If we can make all of
>    the link state management softirq safe (it probably is, except
>    for perhaps RTNL), these case can be done synchronously always.

I think one of the reasons it's done this way is to call the function
netdev_state_change which needs to be in process context to walk
through the notifier list and do all the calls.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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