linux-kernel - Re: [PATCH] fs: change sys_truncate/sys

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Date:	Wed, 23 Sep 2009 10:18:39 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"H. Peter Anvin" <hpa@...or.com>
cc:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>,
	Al Viro <viro@...iv.linux.org.uk>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: change sys_truncate/sys_ftruncate length parameter
 type



On Wed, 23 Sep 2009, H. Peter Anvin wrote:
> 
> I would argue that the current behavior is, if not incorrect (we define our
> own ABI after all) at least unwanted (we want our ABI to be as close as
> practical to the POSIX API.)

I think we care a WHOLE LOT more about binary compatibility than we care 
about some POSIX case for a braindamaged and fundamentally broken system 
call anyway.

The thing is, ftruncate() should take loff_t these days, so the old POSIX 
language is about a pointless system call where the _only_ thing that 
matters is legacy - and that legacy trumps any POSIX concerns.

			Linus
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