Solaris directio()
diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index 62af63b..7e84070 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -199,6 +199,11 @@
 #define ngx_directio(fd)         fcntl(fd, F_NOCACHE, 1)
 #define ngx_directio_n           "fcntl(F_NOCACHE)"
 
+#elif (NGX_HAVE_DIRECTIO)
+
+#define ngx_directio(fd)         directio(fd, DIRECTIO_ON)
+#define ngx_directio_n           "directio(DIRECTIO_ON)"
+
 #else
 
 #define ngx_directio(fd)         0