  Van der Waals materials are a new platform to study two-dimensional systems,
including magnetic order. Since the number of spins is relatively small,
measuring the magnetization is challenging. Here we report spin Hall
magnetoresistance (SMR) up to room temperature caused by the magnetic surface
texture of exfoliated flakes of magnetic van der Waals materials. For the
antiferromagnet FePS3 the SMR amounts to 0.1 % for an applied magnetic field of
7 T at 5 K which implies a substantial canting of the magnetic moments relative
to the colinear antiferromagnetic order. The canting is substantial even for a
magnetic field along the N\'eel vector, which illustrates the unique power of
the SMR to detect magnetic surface textures in van der Waals magnets.
