linux-kernel - Re: [PATCH v2 2/6] bitmap: replace _reg_op(REG_OP_ALLOC) with bitmap

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Message-ID: <ZNX+bponlicM3AFL@smile.fi.intel.com>
Date:   Fri, 11 Aug 2023 12:25:02 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Yury Norov <yury.norov@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: Re: [PATCH v2 2/6] bitmap: replace _reg_op(REG_OP_ALLOC) with
 bitmap_set()

On Thu, Aug 10, 2023 at 05:57:28PM -0700, Yury Norov wrote:
> _reg_op(REG_OP_ALLOC) duplicates bitmap_set(). Fix it.

...

>  int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
>  {
> +	unsigned int nbits = pos + BIT(order);

Shouldn't this be unsigned long?
As the prototype of the used later unsigned long find_next_bit().

>  	if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
>  		return -EBUSY;
> -	return __reg_op(bitmap, pos, order, REG_OP_ALLOC);
> +	bitmap_set(bitmap, pos, nbits);
> +	return 0;
>  }

-- 
With Best Regards,
Andy Shevchenko