netdev - Re: [PATCH v3] xmit_compl_seq: information to reclaim vmsplice buffers

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Message-ID: <AANLkTikmpfsBMRu2DPWKoR9pmQ9R-1MmxaZgoyB6y7Zi@mail.gmail.com>
Date:	Mon, 27 Sep 2010 14:49:27 -0700
From:	Tom Herbert <therbert@...gle.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>, netdev@...r.kernel.org,
	davem@...emloft.net, sridharr@...gle.com
Subject: Re: [PATCH v3] xmit_compl_seq: information to reclaim vmsplice buffers

> Alternative would be to copy data on retransmits, for tcp sockets using
> SOCK_XMIT_COMPL_SEQ. (ie not using skb_clone but skb_copy())
>

That's coming awfully close to COW! ;-)

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