drm_gem_fb_vunmap
drm_gem_fb_vunmap(fb, shadow_plane_state->map);
EXPORT_SYMBOL(drm_gem_fb_vunmap);
drm_gem_fb_vunmap(fb, shadow_plane_state->map);
drm_gem_fb_vunmap(job->fb, vkmsjob->wb_frame_info.map);
void drm_gem_fb_vunmap(struct drm_framebuffer *fb, struct iosys_map *map);