Add uninitialized_var() to silence bogus compiler warnings

[fio.git] / engines / splice.c

diff --git a/engines/splice.c b/engines/splice.c
index 5a288b5532c013d7e3cb8d58a6c131b76c488d82..a847f9caaf7d5ca35cf08d9cadca59a50345d5bc 100644 (file)
--- a/engines/splice.c
+++ b/engines/splice.c
@@ -201,7 +201,7 @@ static int fio_splice_write(struct thread_data *td, struct io_u *io_u)
 static int fio_spliceio_queue(struct thread_data *td, struct io_u *io_u)
 {
        struct spliceio_data *sd = td->io_ops->data;
-       int ret;
+       int uninitialized_var(ret);
 
        fio_ro_check(td, io_u);
 
@@ -232,8 +232,12 @@ static int fio_spliceio_queue(struct thread_data *td, struct io_u *io_u)
                        io_u->error = errno;
        }
 
-       if (io_u->error)
+       if (io_u->error) {
                td_verror(td, io_u->error, "xfer");
+               if (io_u->error == EINVAL)
+                       log_err("fio: looks like splice doesn't work on this"
+                                       " file system\n");
+       }
 
        return FIO_Q_COMPLETED;
 }
@@ -246,7 +250,6 @@ static void fio_spliceio_cleanup(struct thread_data *td)
                close(sd->pipe[0]);
                close(sd->pipe[1]);
                free(sd);
-               td->io_ops->data = NULL;
        }
 }