Re: [PATCH 2/6] bitmap: move some macros from linux/bitmap.h to linux/bitops.h

From: Andy Shevchenko
Date: Thu Jan 21 2021 - 05:23:54 EST


On Wed, Jan 20, 2021 at 04:06:26PM -0800, Yury Norov wrote:
> In the following patches of the series they are used by
> find_bit subsystem.

s/subsystem/API/

...

> --- a/include/linux/bitops.h
> +++ b/include/linux/bitops.h
> @@ -7,6 +7,17 @@
>
> #include <uapi/linux/kernel.h>
>
> +#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
> +#define BITMAP_LAST_WORD_MASK(nbits) (~0UL >> (-(nbits) & (BITS_PER_LONG - 1)))

Hmm... Naming here is not in the bitops namespace.
I would expect BITS rather than BITMAP for these two.

So, we have at least the following options:
- split to a separate header, like bitmap_macros.h
- s/BITMAP/BITS/ and either define BITMAP_* as respective BITS_* or rename it
everywhere in bitmap.*
- your variant
- ...???...


--
With Best Regards,
Andy Shevchenko