Re: [PATCH]use kzalloc in vfs where appropriate
From: Pekka J Enberg
Date: Mon Mar 20 2006 - 08:14:03 EST
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...
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