Add specific knob for controlling fallocate() usage
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/filesetup.c b/filesetup.c
index 70589aa..cbef672 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -64,6 +64,19 @@
return 1;
}
+#ifdef FIO_HAVE_FALLOCATE
+ if (td->o.fallocate && !td->o.fill_device) {
+ dprint(FD_FILE, "fallocate file %s size %llu\n", f->file_name,
+ f->real_file_size);
+
+ r = posix_fallocate(f->fd, 0, f->real_file_size);
+ if (r < 0) {
+ log_err("fio: posix_fallocate fails: %s\n",
+ strerror(-r));
+ }
+ }
+#endif
+
if (!new_layout)
goto done;
@@ -78,16 +91,6 @@
td_verror(td, errno, "ftruncate");
goto err;
}
-
-#ifdef FIO_HAVE_FALLOCATE
- dprint(FD_FILE, "fallocate file %s, size %llu\n", f->file_name,
- f->real_file_size);
- r = posix_fallocate(f->fd, 0, f->real_file_size);
- if (r < 0) {
- log_err("fio: posix_fallocate fails: %s\n",
- strerror(-r));
- }
-#endif
}
b = malloc(td->o.max_bs[DDIR_WRITE]);