netdev - Re: [PATCH 2/8] netback: add module unload function

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Date:	Tue, 5 Mar 2013 13:30:01 +0000
From:	Wei Liu <wei.liu2@...rix.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	<wei.liu2@...rix.com>,
	"xen-devel@...ts.xen.org" <xen-devel@...ts.xen.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"annie.li@...cle.com" <annie.li@...cle.com>
Subject: Re: [PATCH 2/8] netback: add module unload function

On Mon, 2013-03-04 at 21:58 +0000, Stephen Hemminger wrote:
> On Fri, 15 Feb 2013 16:00:03 +0000
> Wei Liu <wei.liu2@...rix.com> wrote:
> 
> > Enable users to unload netback module. Users should make sure there is not vif
> > runnig.
> 
> 
> Isn't it likely that some admin might be trying to cleanup or do shutdown and there
> is an ordering problem. What happens if vif's are still running?
> 
> Why depend on users? You should allow it anytime and do refcounting and auto-destroy the vif's for them.

Sure, we should not depend on users. I will move my vif get/put module
patch before this one.


Wei.

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