#define __NR_fadvise64 250
#endif
+#ifndef __NR_sys_splice
+#define __NR_sys_splice 313
+#define __NR_sys_tee 315
+#define __NR_sys_vmsplice 316
+#endif
+
+#ifndef __NR_async_exec
+#define __NR_async_exec 320
+#define __NR_async_wait 321
+#define __NR_umem_add 322
+#define __NR_async_thread 323
+#endif
+
+#define FIO_HAVE_SYSLET
+
#define nop __asm__ __volatile__("rep;nop": : :"memory")
static inline unsigned long ffz(unsigned long bitmask)