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From:   Valentin Schneider <vschneid@redhat.com>
To:     Andy Shevchenko <andy.shevchenko@gmail.com>,
        Steven Rostedt <rostedt@goodmis.org>
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Subject: Re: [PATCH v2 1/5] bitops: Introduce find_next_andnot_bit()
In-Reply-To: <CAHp75VcaSwfy7kOm_d28-87QKQ5KPB69=X=Z9OYUzJJKwRCSmQ@mail.gmail.com>
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Date:   Fri, 19 Aug 2022 11:34:01 +0100
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On 18/08/22 22:04, Andy Shevchenko wrote:
> On Thu, Aug 18, 2022 at 8:18 PM Steven Rostedt <rostedt@goodmis.org> wrote:
>> On Thu, 18 Aug 2022 17:26:43 +0100
>> Valentin Schneider <vschneid@redhat.com> wrote:
>>
>> > How about:
>>
>> >
>> >   find the next set bit in (*addr1 & ~*addr2)
>>
>> I understand the above better. But to convert that into English, we could
>> say:
>>
>>
>>   Find the next bit in *addr1 excluding all the bits in *addr2.
>>
>> or
>>
>>   Find the next bit in *addr1 that is not set in *addr2.
>
> With this explanation I'm wondering how different this is to
> bitmap_bitremap(), with adjusting to using an inverted mask. If they
> have something in common, perhaps make them in the same namespace with
> similar naming convention?
>

I'm trying to wrap my head around the whole remap thing, IIUC we could have
something like remap *addr1 to ~*addr2 and stop rather than continue with a
wraparound, but that really feels like shoehorning.

> --
> With Best Regards,
> Andy Shevchenko