diff --git a/dlls/d3d8/volume.c b/dlls/d3d8/volume.c
index 1a4e80cab2b..add35ad7cde 100644
--- a/dlls/d3d8/volume.c
+++ b/dlls/d3d8/volume.c
@@ -130,52 +130,28 @@ static HRESULT WINAPI d3d8_volume_SetPrivateData(IDirect3DVolume8 *iface, REFGUI
         const void *data, DWORD data_size, DWORD flags)
 {
     struct d3d8_volume *volume = impl_from_IDirect3DVolume8(iface);
-    struct wined3d_resource *resource;
-    HRESULT hr;
-
     TRACE("iface %p, guid %s, data %p, data_size %u, flags %#x.\n",
             iface, debugstr_guid(guid), data, data_size, flags);
 
-    wined3d_mutex_lock();
-    resource = wined3d_volume_get_resource(volume->wined3d_volume);
-    hr = wined3d_resource_set_private_data(resource, guid, data, data_size, flags);
-    wined3d_mutex_unlock();
-
-    return hr;
+    return d3d8_resource_set_private_data(&volume->resource, guid, data, data_size, flags);
 }
 
-static HRESULT WINAPI d3d8_volume_GetPrivateData(IDirect3DVolume8 *iface, REFGUID  guid,
+static HRESULT WINAPI d3d8_volume_GetPrivateData(IDirect3DVolume8 *iface, REFGUID guid,
         void *data, DWORD *data_size)
 {
     struct d3d8_volume *volume = impl_from_IDirect3DVolume8(iface);
-    struct wined3d_resource *resource;
-    HRESULT hr;
-
     TRACE("iface %p, guid %s, data %p, data_size %p.\n",
             iface, debugstr_guid(guid), data, data_size);
 
-    wined3d_mutex_lock();
-    resource = wined3d_volume_get_resource(volume->wined3d_volume);
-    hr = wined3d_resource_get_private_data(resource, guid, data, data_size);
-    wined3d_mutex_unlock();
-
-    return hr;
+    return d3d8_resource_get_private_data(&volume->resource, guid, data, data_size);
 }
 
 static HRESULT WINAPI d3d8_volume_FreePrivateData(IDirect3DVolume8 *iface, REFGUID guid)
 {
     struct d3d8_volume *volume = impl_from_IDirect3DVolume8(iface);
-    struct wined3d_resource *resource;
-    HRESULT hr;
-
     TRACE("iface %p, guid %s.\n", iface, debugstr_guid(guid));
 
-    wined3d_mutex_lock();
-    resource = wined3d_volume_get_resource(volume->wined3d_volume);
-    hr = wined3d_resource_free_private_data(resource, guid);
-    wined3d_mutex_unlock();
-
-    return hr;
+    return d3d8_resource_free_private_data(&volume->resource, guid);
 }
 
 static HRESULT WINAPI d3d8_volume_GetContainer(IDirect3DVolume8 *iface, REFIID riid, void **container)