Setup the allocation parameters for allocating output
buffers. The passed in query contains the result of the
downstream allocation query. This function is only called
when not operating in passthrough mode. The default
implementation will remove all memory dependent metadata.
If there is a @filter_meta method implementation, it will
be called for all metadata API in the downstream query,
otherwise the metadata API is removed.
Setup the allocation parameters for allocating output buffers. The passed in query contains the result of the downstream allocation query. This function is only called when not operating in passthrough mode. The default implementation will remove all memory dependent metadata. If there is a @filter_meta method implementation, it will be called for all metadata API in the downstream query, otherwise the metadata API is removed.