When verify fails, dump the good/bad blocks to files

[fio.git] / lib / rand.c

diff --git a/lib/rand.c b/lib/rand.c
index 839a6a9476c82cedad1de30067ab06c776d750bd..06812823994d45cfe744351095af015d5858fbae 100644 (file)
--- 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;
+}