Re: [PATCH 0/10] use safer test on the result of find_first_zero_bit

From: Geert Uytterhoeven
Date: Wed Jun 04 2014 - 06:55:42 EST


Hi Julia,

On Wed, Jun 4, 2014 at 11:52 AM, Julia Lawall <julia.lawall@xxxxxxx> wrote:
>> Maybe the documented return code should be changed to allow for the
>> existing behaviour.
>
> Sorry, I'm not sure to understand what you suggest here.

include/asm-generic/bitops/find.h:

| /**
| * find_first_zero_bit - find the first cleared bit in a memory region
| * @addr: The address to start the search at
| * @size: The maximum number of bits to search
| *
| * Returns the bit number of the first cleared bit.
| * If no bits are zero, returns @size.

"If no bits are zero, returns @size or a number larger than @size."

| */
| extern unsigned long find_first_zero_bit(const unsigned long *addr,
| unsigned long size);

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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