linux-kernel - Re: Unexpected splice "always copy" behavior observed

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Date:	Wed, 19 May 2010 17:33:11 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	rostedt@...dmis.org, npiggin@...e.de,
	mathieu.desnoyers@...icios.com, peterz@...radead.org,
	fweisbec@...il.com, tardyp@...il.com, mingo@...e.hu,
	acme@...hat.com, tzanussi@...il.com, paulus@...ba.org,
	linux-kernel@...r.kernel.org, arjan@...radead.org,
	ziga.mahkovec@...il.com, davem@...emloft.net, linux-mm@...ck.org,
	akpm@...ux-foundation.org, kosaki.motohiro@...fujitsu.com,
	cl@...ux-foundation.org, tj@...nel.org, jens.axboe@...cle.com
Subject: Re: Unexpected splice "always copy" behavior observed

On Wed, 19 May 2010, Linus Torvalds wrote:
> Btw, since you apparently have a real case - is the "splice to file" 
> always just an append? IOW, if I'm not right in assuming that the only 
> sane thing people would reasonable care about is "append to a file", then 
> holler now.

Virtual machines might reasonably need this for splicing to a disk
image.

Miklos
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