diff --git a/ChangeLog b/ChangeLog
index 6cb971dfa6..ed64155fdf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-10-17  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* bits/uio-ext.h (RWF_HIPRI, RWF_DSYNC, RWF_SYNC, RWF_NOWAIT): New
+	defines.
+
 2017-10-17  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	[BZ #22159]
diff --git a/bits/uio-ext.h b/bits/uio-ext.h
index cd4039cb61..cba75a7563 100644
--- a/bits/uio-ext.h
+++ b/bits/uio-ext.h
@@ -23,6 +23,10 @@
 # error "Never include <bits/uio-ext.h> directly; use <sys/uio.h> instead."
 #endif
 
-/* This operating system does not extend sys/uio.h.  */
+/* Flags for preadv2/pwritev2.  */
+#define RWF_HIPRI	0x00000001 /* High priority request.  */
+#define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */
+#define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */
+#define RWF_NOWAIT	0x00000008 /* per-IO nonblocking mode.  */
 
 #endif /* sys/uio_ext.h */
diff --git a/sysdeps/unix/sysv/linux/bits/uio-ext.h b/sysdeps/unix/sysv/linux/bits/uio-ext.h
index 751fc4917d..f931fd112a 100644
--- a/sysdeps/unix/sysv/linux/bits/uio-ext.h
+++ b/sysdeps/unix/sysv/linux/bits/uio-ext.h
@@ -41,8 +41,7 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,
 				  unsigned long int __flags)
   __THROW;
 
-
-/* Flags for preadv2/pwritev2: */
+/* Flags for preadv2/pwritev2.  */
 #define RWF_HIPRI	0x00000001 /* High priority request.  */
 #define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */
 #define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */