Remove use of OS provided random functions
We added the internal random generator a long time ago, and kept
the OS variant around as an opt-in feature with using use_os_rand=1.
We defaulted to using the fio provided one, and I doubt that
anyone has used the option.
The time has come to kill it.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/filesetup.c b/filesetup.c
index 43146ba..1b487d2 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -261,16 +261,9 @@
unsigned long long ret, sized;
unsigned long r;
- if (td->o.use_os_rand) {
- r = os_random_long(&td->file_size_state);
- sized = td->o.file_size_high - td->o.file_size_low;
- ret = (unsigned long long) ((double) sized * (r / (OS_RAND_MAX + 1.0)));
- } else {
- r = __rand(&td->__file_size_state);
- sized = td->o.file_size_high - td->o.file_size_low;
- ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
- }
-
+ r = __rand(&td->__file_size_state);
+ sized = td->o.file_size_high - td->o.file_size_low;
+ ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
ret += td->o.file_size_low;
ret -= (ret % td->o.rw_min_bs);
return ret;