On Fri, 2010-01-22 at 08:52 -0600, Christoph Lameter wrote:> On Fri, 22 Jan 2010, Yinghai Lu wrote:> > +#define __round_mask(x,y) ((__typeof__(x))((y)-1))> > +#define round_up(x,y) ((((x)-1) | __round_mask(x,y))+1)> > +#define round_down(x,y) ((x) & ~__round_mask(x,y))> s/round/round_power2/s/round/round_power_of_2/BUILD_BUG_ON_NOT_POWER_OF_2