libaio: retry on -EINTR

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/engines/libaio.c b/engines/libaio.c
index 6c5d73e..d11a262 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -167,7 +167,7 @@
 			events += r;
 		else if (r == -EAGAIN)
 			usleep(100);
-		else
+		else if (r != -EINTR)
 			break;
 	} while (events < min);