On Thu, Jan 24, 2008 at 01:26:14PM +0530, Aneesh Kumar K.V wrote:
>
> >
> > > +/* find most significant bit */
> > > +static int fmsb(unsigned short word)
> > > +{
> > > + int order;
> > > +
> > > + if (word > 255) {
> > > + order = 7;
> > > + word >>= 8;
> > > + } else {
> > > + order = -1;
> > > + }
> > > +
> > > + do {
> > > + order++;
> > > + word >>= 1;
> > > + } while (word != 0);
> > > +
> > > + return order;
> > > +}
> >
> > Did we just reinvent fls()?
>
> replaced by fls.
>
> >
That should be fls() - 1;
The full patch is at
http://www.radian.org/~kvaneesh/ext4/jan-24-2008/mballoc-core.patch
The patch is too big to inline.
-aneesh
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