On Sun, May 21, 2023 at 09:02:36AM +0800, Wang Yugui wrote:
> > +static inline unsigned fgp_order(size_t size)
> > +{
> > + unsigned int shift = ilog2(size);
> > +
> > + if (shift <= PAGE_SHIFT)
> > + return 0;
> > + return (shift - PAGE_SHIFT) << 26;
>
> int overflow will happen when size > 0.5M(2**19)?
I don't see it?
size == 1 << 20;
shift = 20;
return (20 - 12) << 26;
Looks like about 1 << 29 to me.
