linux-kernel - Re: [PATCH] tun: don't look at current when non-blocking

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Message-ID: <20131009081354.GA30882@redhat.com>
Date:	Wed, 9 Oct 2013 11:13:54 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Jason Wang <jasowang@...hat.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, edumazet@...gle.com,
	xemul@...allels.com
Subject: Re: [PATCH] tun: don't look at current when non-blocking

On Wed, Oct 09, 2013 at 02:25:19PM +0800, Jason Wang wrote:
> On 10/09/2013 03:46 AM, David Miller wrote:
> > From: "Michael S. Tsirkin" <mst@...hat.com>
> > Date: Sun, 6 Oct 2013 21:25:12 +0300
> >
> >> We play with a wait queue even if socket is
> >> non blocking. This is an obvious waste.
> >> Besides, it will prevent calling the non blocking
> >> variant when current is not valid.
> >>
> >> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> > Applied and queued up for -stable, thanks.
> > --
> 
> Michael, I believe this is just an optimization or a required patch of
> your following patches. So no need go for stable?

I don't think it's required for stable.
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