linux-kernel - Re: [Xen-devel] [PATCH] xen: netback: remove redundant xenvif

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Message-ID: <1361352229.1051.144.camel@zakaz.uk.xensource.com>
Date:	Wed, 20 Feb 2013 09:23:49 +0000
From:	Ian Campbell <Ian.Campbell@...rix.com>
To:	David Miller <davem@...emloft.net>
CC:	"JBeulich@...e.com" <JBeulich@...e.com>,
	"drjones@...hat.com" <drjones@...hat.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH] xen: netback: remove redundant xenvif_put

On Tue, 2013-02-19 at 18:06 +0000, David Miller wrote:
> From: Ian Campbell <Ian.Campbell@...rix.com>
> Date: Tue, 19 Feb 2013 08:58:44 +0000
> 
> > On Tue, 2013-02-19 at 08:03 +0000, Jan Beulich wrote:
> >> >>> On 19.02.13 at 06:53, David Miller <davem@...emloft.net> wrote:
> >> > From: Andrew Jones <drjones@...hat.com>
> >> > Date: Mon, 18 Feb 2013 21:29:20 +0100
> >> > 
> >> >> netbk_fatal_tx_err() calls xenvif_carrier_off(), which does
> >> >> a xenvif_put(). As callers of netbk_fatal_tx_err should only
> >> >> have one reference to the vif at this time, then the xenvif_put
> >> >> in netbk_fatal_tx_err is one too many.
> >> >> 
> >> >> Signed-off-by: Andrew Jones <drjones@...hat.com>
> >> > 
> >> > Applied.
> >> 
> >> But this is wrong from all we can tell,
> > 
> > Yes, please can this be reverted.
> 
> Done and I've annotated the revert commit message with as much
> information as possible.

Thanks, 629821d9b looks good to me.

May be worth considering the patch in
<1361281636.1051.100.camel@...az.uk.xensource.com> if we get many more
of these queries...

Ian.

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