Re: [PATCH] lib/find_bit: Add find_prev_*_bit functions.

[Andy Shevchenko]

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