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From: David Woodhouse <dwmw2@infradead.org>
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References: <3D57C1F4.1040303@mandrakesoft.com>  <200208120018.g7C0IFN185157@saturn.cs.uml.edu> 
To: Jeff Garzik <jgarzik@mandrakesoft.com>
Cc: "Albert D. Cahalan" <acahalan@cs.uml.edu>,
       Linus Torvalds <torvalds@transmeta.com>,
       Jamie Lokier <lk@tantalophile.demon.co.uk>,
       Andrew Morton <akpm@zip.com.au>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch 6/12] hold atomic kmaps across generic_file_read 
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Date: Mon, 12 Aug 2002 15:46:34 +0100
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jgarzik@mandrakesoft.com said:
> > > A copy-file syscall would be nice, too, but that's just laziness
> > > talking....
 
> > You have a laptop computer with a USB-connected Ethernet.
> > You mount a NetApp or similar box via the SMB/CIFS protocol.
> > You see a multi-gigabyte file. You make a copy... ouch!!!
> > For each gigabyte, you hog the network for an hour.

> /bin/cp has these problems regardless of whether or not it uses a
> copy-file syscall.

Nope. There was a reason he specified SMB/CIFS.

--
dwmw2


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