Re: [PATCH]use kzalloc in vfs where appropriate

[Oliver Neukum]

Am Montag, 20. März 2006 14:08 schrieb Denis Vlasenko:
> On Monday 20 March 2006 09:25, Pekka Enberg wrote:
> > > Rewriting the test as:
> > > n!=0 && n > INT_MAX / size
> > > saves the division because size is much likelier to be a constant, and indeed
> > > the code is better:
> > >
> > >         cmpq    $268435455, %rax
> > >         movq    $0, 40(%rsp)
> > >         ja      .L313
> > >
> > > Is there anything I am missing?
> 
> You may drop "n!=0" part, but you must check size!=0.
> Since if size is 0, kcalloc returns NULL, then

Why? size == 0 is a bug. We want to oops here.

	Regards
		Oliver
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/