In drbd_dax_pmem.h:35:
-#define arch_wb_cache_pmem(A, L) do { } while (0)
+#define arch_wb_cache_pmem(A, S) do { } while (0)
Avoid compiler warning by making the macro definition exactly match the one in
linux/libnvdimm.h:
drbd_dax_pmem.h:35: warning: "arch_wb_cache_pmem" redefined