Re: [Qemu-devel] [PATCH v2 5/9] hbitmap: Add hbitmap_copy

[Paolo Bonzini]

Il 12/03/2014 07:31, Fam Zheng ha scritto:
> +HBitmap *hbitmap_copy(const HBitmap *bitmap)
> +{
> +    int i;
> +    HBitmap *hb = g_memdup(bitmap, sizeof(struct HBitmap));
> +
> +    for (i = HBITMAP_LEVELS; i-- > 0; ) {
> +        hb->levels[i] = g_memdup(bitmap->levels[i],
> +                                 bitmap->size * sizeof(unsigned long));
> +    }
> +
> +    return hb;

Not quite... the bitmap->size is in bits, so you need to scale it down by

        size = MAX((size + BITS_PER_LONG - 1) >> BITS_PER_LEVEL, 1);

before each memdup.

Paolo