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-rw-r--r--lib/rand.c23
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/rand.c b/lib/rand.c
index 839a6a94..06812823 100644
--- a/lib/rand.c
+++ b/lib/rand.c
@@ -59,18 +59,25 @@ void init_rand(struct frand_state *state)
__rand(state);
}
-void fill_random_buf(void *buf, unsigned int len)
+void __fill_random_buf(void *buf, unsigned int len, unsigned long seed)
{
- unsigned long r = __rand(&__fio_rand_state);
long *ptr = buf;
- if (sizeof(int) != sizeof(*ptr))
- r *= (unsigned long) __rand(&__fio_rand_state);
-
while ((void *) ptr - buf < len) {
- *ptr = r;
+ *ptr = seed;
ptr++;
- r *= GOLDEN_RATIO_PRIME;
- r >>= 3;
+ seed *= GOLDEN_RATIO_PRIME;
+ seed >>= 3;
}
}
+
+unsigned long fill_random_buf(void *buf, unsigned int len)
+{
+ unsigned long r = __rand(&__fio_rand_state);
+
+ if (sizeof(int) != sizeof(long *))
+ r *= (unsigned long) __rand(&__fio_rand_state);
+
+ __fill_random_buf(buf, len, r);
+ return r;
+}