  Recently it was established in Einstein-Maxwell-Dilaton gravity that the KSS
viscosity/entropy ratio associated with AdS planar black holes can be viewed as
the boundary dual to the generalized Smarr relation of the black holes in the
bulk. In this paper we establish this relation in Einstein gravity with general
minimally-coupled matter, and also in theories with an additional non-minimally
coupled scalar field. We consider two examples for explicit demonstrations.
