[no subject]

[Yun Levi]

On Thu, Dec 3, 2020 at 2:36 AM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, Dec 02, 2020 at 09:26:05AM -0800, Yury Norov wrote:
> > On Wed, Dec 2, 2020 at 3:50 AM Yun Levi <ppbuk5246@xxxxxxxxx> wrote:
>
> ...
>
> >  I think this patch has some good catches. We definitely need to implement
> > find_last_zero_bit(), as it is used by fs/ufs, and their local
> > implementation is not optimal.
>
> Side note: speaking of performance, any plans to fix for_each_*_bit*() for
> cases when the nbits is known to be <= BITS_PER_LONG?
>
> Now it makes an awful code generation (something like few hundred bytes of
> code).
>
> --
> With Best Regards,
> Andy Shevchenko
>
>

> Side note: speaking of performance, any plans to fix for_each_*_bit*() for
> cases when the nbits is known to be <= BITS_PER_LONG?

Frankly Speaking, I don't have an idea in now.....
Could you share your idea or wisdom?

Thanks.
Levi.