Messages in this thread | | | Date | Wed, 2 Dec 2020 19:37:01 +0200 | From | Andy Shevchenko <> | Subject | Re: [PATCH] lib/find_bit: Add find_prev_*_bit functions. |
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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@gmail.com> wrote:
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> 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
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