lfsr: ensure that the cycle follows the randrepeat= setting
Use the regular block offset seed to "seed" the lfsr generator,
so that it obeys randrepeat=0/1 as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/filesetup.c b/filesetup.c
index 9fb325b..f4e1adc 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -918,7 +918,11 @@
blocks = (f->real_file_size + td->o.rw_min_bs - 1) /
(unsigned long long) td->o.rw_min_bs;
if (td->o.random_generator == FIO_RAND_GEN_LFSR) {
- if (!lfsr_init(&f->lfsr, blocks))
+ unsigned long seed;
+
+ seed = td->rand_seeds[FIO_RAND_BLOCK_OFF];
+
+ if (!lfsr_init(&f->lfsr, blocks, seed))
continue;
} else if (!td->o.norandommap) {
f->io_axmap = axmap_new(blocks);