#define FIO_HAVE_SYSLET
#define nop __asm__ __volatile__("rep;nop": : :"memory")
-#define read_barrier() asm volatile ("": : :"memory")
+#define read_barrier() __asm__ __volatile__("": : :"memory")
+#define write_barrier() __asm__ __volatile__("": : :"memory")
static inline unsigned long arch_ffz(unsigned long bitmask)
{