linux-kernel - RE: New copyfile system call

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Message-ID: <4FA345DA4F4AE44899BD2B03EEEC2FA9235DCDA7@SACEXCMBX04-PRD.hq.netapp.com>
Date:	Fri, 22 Feb 2013 22:48:18 +0000
From:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
To:	Zach Brown <zab@...hat.com>, Ric Wheeler <rwheeler@...hat.com>
CC:	Paolo Bonzini <pbonzini@...hat.com>,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Chris L. Mason" <clmason@...ionio.com>,
	Christoph Hellwig <hch@...radead.org>,
	Alexander Viro <aviro@...hat.com>,
	"Martin K. Petersen" <mkp@....net>, Hannes Reinecke <hare@...e.de>,
	"Joel Becker" <jlbec@...lplan.org>
Subject: RE: New copyfile system call - discuss before LSF?

> -----Original Message-----
> From: Zach Brown [mailto:zab@...hat.com]
> Sent: Friday, February 22, 2013 1:22 PM
> To: Ric Wheeler
> Cc: Paolo Bonzini; Myklebust, Trond; Linux FS Devel; linux-
> kernel@...r.kernel.org; Chris L. Mason; Christoph Hellwig; Alexander Viro;
> Martin K. Petersen; Hannes Reinecke; Joel Becker
> Subject: Re: New copyfile system call - discuss before LSF?
> 
> > This seems to be suspiciously close to a clear consensus on how to
> > move forward after many years of spinning our wheels. Anyone want to
> > promote an actual patch before we change our collective minds?
> 
> It seems like we'd want to start with the exisiting (presumably
> bitrotten) prototypes that Trond has for nfs and that Martin has for
> block->scsi.  Mash the new syscall on top of and get them working in
> current mainline.
> 
> I'd be happy to take responsibility for making forward progress if no one else
> has the bandwidth.
> 
> Trond, Martin, would that make sense?  Are the most recent versions of the
> prototypes available somewhere?

Hi Zach,

The wildly bitrotten NFS copyfile prototype can be found on

    ftp://ftp.netapp.com/frm-ntap/opensource/linux_copyfileat/v2/linux_copyfileat_v2.tgz

Please open with extreme caution and apply the resulting patches to a Linux 2.6.34.2 kernel...

Cheers
   Trond
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