Re: [Qemu-devel] [PATCH 1/5] block: Add BDS.never_freeze

[Alberto Garcia]

On Fri 28 Jun 2019 12:32:51 AM CEST, Max Reitz wrote:
> @@ -4416,6 +4416,14 @@ int bdrv_freeze_backing_chain(BlockDriverState *bs, 
> BlockDriverState *base,
>          return -EPERM;
>      }
>  
> +    for (i = bs; i != base; i = backing_bs(i)) {
> +        if (i->backing && backing_bs(i)->never_freeze) {
> +            error_setg(errp, "Cannot freeze '%s' link to '%s'",
> +                       i->backing->name, backing_bs(i)->node_name);
> +            return -EPERM;
> +        }
> +    }

How about adding this to bdrv_is_backing_chain_frozen() instead?

Berto