Re: [PATCH] fs/fcntl.c : don't test unsigned value for less than zero

From: Matthew Wilcox
Date: Fri Apr 15 2005 - 06:30:42 EST


On Fri, Apr 15, 2005 at 09:21:50AM +0100, Christoph Hellwig wrote:
> On Fri, Apr 15, 2005 at 02:31:00AM +0100, Matthew Wilcox wrote:
> > On Fri, Apr 15, 2005 at 03:07:42AM +0200, Jesper Juhl wrote:
> > > 'arg' is unsigned so it can never be less than zero, so testing for that
> > > is pointless and also generates a warning when building with gcc -W. This
> > > patch eliminates the pointless check.
> >
> > Didn't Linus already reject this one 6 months ago?
>
> I think Linux only complained if we're using some typedef that actually
> may be signed. For fcntl that 'arg' argument is unsigned and that's hardcoded
> in the ABI. So the check doesn't make sense at all.

No, it was exactly this patch:
http://www.ussg.iu.edu/hypermail/linux/kernel/0401.0/1816.html

--
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himself that the war is just, and will thank God for the better sleep
he enjoys after this process of grotesque self-deception." -- Mark Twain
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