[Libguestfs] [nbdkit PATCH] filters: Remove most next_* wrappers

[Richard W.M. Jones]

On Wed, Feb 12, 2020 at 09:38:29AM -0600, Eric Blake wrote:
> +#ifdef NBDKIT_INTERNAL
> +/* Opaque type encapsulating all information needed for calling into
> + * the next filter or plugin.
> + */
> +typedef struct backend backend;
> +#else
> +typedef void backend;
> +#endif

Is it better to call it something with an nbdkit_* prefix?  Although
not advisable, there can be out of tree filters and we do publish
<nbdkit-filter.h> as a public header file.

Anyway, you decide - ACK patch.

Rich.

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