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Message-ID: <1285770689.31343.9.camel@localhost.localdomain> Date: Wed, 29 Sep 2010 07:31:29 -0700 From: Shirley Ma <mashirle@...ibm.com> To: "Michael S. Tsirkin" <mst@...hat.com> Cc: Arnd Bergmann <arnd@...db.de>, Avi Kivity <avi@...hat.com>, "Xin, Xiaohui" <xiaohui.xin@...el.com>, David Miller <davem@...emloft.net>, netdev@...r.kernel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host kernel On Wed, 2010-09-29 at 10:16 +0200, Michael S. Tsirkin wrote: > If you look at dev_hard_start_xmit you will see a call > to skb_orphan_try which often calls the skb destructor. > So I suspect this is almost equivalent to your original patch, > and has the same correctness issue. I forgot to mention, in skb_orphan_try, I still kept the skb->sk reference to sk, I assign skb->sk to NULL when the DMA done. Thanks Shirley -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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