linux-kernel - Re: [RFC]: Support for zero-copy TCP transmit of user space data

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Message-ID: <494A99EF.6070400@flurg.com>
Date:	Thu, 18 Dec 2008 12:43:59 -0600
From:	"David M. Lloyd" <dmlloyd@...rg.com>
To:	Vladislav Bolkhovitin <vst@...b.net>
Cc:	linux-mm@...ck.org, Christoph Hellwig <hch@...radead.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	scst-devel@...ts.sourceforge.net,
	Bart Van Assche <bart.vanassche@...il.com>,
	netdev@...r.kernel.org
Subject: Re: [RFC]: Support for zero-copy TCP transmit of user space data

On 12/18/2008 12:35 PM, Vladislav Bolkhovitin wrote:
> An iSCSI target driver iSCSI-SCST was a part of the patchset 
> (http://lkml.org/lkml/2008/12/10/293). For it a nice optimization to 
> have TCP zero-copy transmit of user space data was implemented. Patch, 
> implementing this optimization was also sent in the patchset, see 
> http://lkml.org/lkml/2008/12/10/296.

I'm probably ignorant of about 90% of the context here, but isn't this the 
sort of problem that was supposed to have been solved by vmsplice(2)?

- DML

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