Add fill_device option

[fio.git] / filesetup.c

diff --git a/filesetup.c b/filesetup.c
index a3bafca1ec10ef587f455170eb9e04ae9a570af7..210cd2ff7ed437a1f19414a82e20600486cdfbc5 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -380,7 +380,7 @@ int setup_files(struct thread_data *td)
         * device/file sizes are zero and no size given, punt
         */
        if ((!total_size || total_size == -1ULL) && !td->o.size &&
-           !(td->io_ops->flags & FIO_NOIO)) {
+           !(td->io_ops->flags & FIO_NOIO) && !td->o.fill_device) {
                log_err("%s: you need to specify size=\n", td->o.name);
                td_verror(td, EINVAL, "total_file_size");
                return 1;
@@ -403,7 +403,8 @@ int setup_files(struct thread_data *td)
                         * zero, set it to the real file size.
                         */
                        f->io_size = td->o.size / td->o.nr_files;
-                       if (!f->io_size || f->io_size > f->real_file_size) {
+                       if ((!f->io_size || f->io_size > f->real_file_size) &&
+                            f->real_file_size) {
                                if (f->file_offset > f->real_file_size)
                                        goto err_offset;
                                f->io_size = f->real_file_size - f->file_offset;