#define __NR_fadvise64 221
#endif
+#ifndef __NR_sys_splice
+#define __NR_sys_splice 275
+#define __NR_sys_tee 276
+#define __NR_sys_vmsplice 278
+#endif
+
+#ifndef __NR_async_exec
+#define __NR_async_exec 280
+#define __NR_async_wait 281
+#define __NR_umem_add 282
+#define __NR_async_thread 283
+#endif
+
+#define FIO_HAVE_SYSLET
+
#define nop __asm__ __volatile__("rep;nop": : :"memory")
static inline unsigned long ffz(unsigned long bitmask)