On Mon, 18 Jun 2018 16:10:01 +0300 Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> A lot of code become ugly because of open coding allocations for bitmaps.
>
> Introduce three helpers to allow users be more clear of intention
> and keep their code neat.
>
> ...
>
> +unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags)
> +{
> + return kmalloc_array(BITS_TO_LONGS(nbits), sizeof(unsigned long), flags);
> +}
> +EXPORT_SYMBOL(bitmap_alloc);
> +
> +unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags)
> +{
> + return bitmap_alloc(nbits, flags | __GFP_ZERO);
> +}
> +EXPORT_SYMBOL(bitmap_zalloc);
> +
> +void bitmap_free(const unsigned long *bitmap)
> +{
> + kfree(bitmap);
> +}
> +EXPORT_SYMBOL(bitmap_free);
> +
I suggest these functions are small and simple enough to justify
inlining them.
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