netdev - Re: [RFC] situation with csum_and_copy

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Message-ID: <1416520542.8629.46.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Thu, 20 Nov 2014 13:55:42 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	David Miller <davem@...emloft.net>, torvalds@...ux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	target-devel@...r.kernel.org,
	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [RFC] situation with csum_and_copy_... API

On Thu, 2014-11-20 at 21:47 +0000, Al Viro wrote:

> As far as I can see, these retries on the send side are simply broken -
> normally we are talking to TCP sockets there and tcp_sendmsg() does *not*
> modify iovec in normal case. 

Arg... I sent this morning something doing this (against net-next tree)

Is it a problem ?

Or can we consider FASTOPEN being not normal case ? ;)

https://patchwork.ozlabs.org/patch/412776/



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