Re: [PATCH]use kzalloc in vfs where appropriate

[Pekka J Enberg <penberg@cs.Helsinki.FI>]

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?

On Mon, 20 Mar 2006, Denis Vlasenko wrote:
> You may drop "n!=0" part, but you must check size!=0.
> Since if size is 0, kcalloc returns NULL, then
> 
>         if (!size || n > INT_MAX / size)
>                 return NULL;

Uh, oh, I must be getting blind to have missed that...

				Pekka
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