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Message-ID: <3D57C1F4.1040303@mandrakesoft.com>
Date: Mon, 12 Aug 2002 10:11:00 -0400
From: Jeff Garzik <jgarzik@mandrakesoft.com>
Organization: MandrakeSoft
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To: "Albert D. Cahalan" <acahalan@cs.uml.edu>
CC: 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
References: <200208120018.g7C0IFN185157@saturn.cs.uml.edu>
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Albert D. Cahalan wrote:
> Jeff Garzik writes:
>>I sure would like an O_STREAMING flag, though...  let a user app hint to 
>>the system that the pages it is reading or writing are perhaps less 
>>likely to be reused, or access randomly....  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.

> Now let's say this file is for a MacOS app. You have to
> preserve the creator, file type, resource fork, etc.

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

	Jeff



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