Ensure that buffer contents are random across jobs as well

[fio.git] / lib / rand.c

diff --git a/lib/rand.c b/lib/rand.c
index 3b2d67ad6e9ebc4a242b24c162f94aa667a11743..7c6fed1fabbcc01f1803f00521d881a9c9662603 100644 (file)
--- a/lib/rand.c
+++ b/lib/rand.c
@@ -36,8 +36,6 @@
 #include "rand.h"
 #include "../hash.h"
 
-struct frand_state __fio_rand_state;
-
 static inline int __seed(unsigned int x, unsigned int m)
 {
        return (x < m) ? x + m : x;
@@ -79,12 +77,13 @@ void __fill_random_buf(void *buf, unsigned int len, unsigned long seed)
        }
 }
 
-unsigned long fill_random_buf(void *buf, unsigned int len)
+unsigned long fill_random_buf(struct frand_state *fs, void *buf,
+                             unsigned int len)
 {
-       unsigned long r = __rand(&__fio_rand_state);
+       unsigned long r = __rand(fs);
 
        if (sizeof(int) != sizeof(long *))
-               r *= (unsigned long) __rand(&__fio_rand_state);
+               r *= (unsigned long) __rand(fs);
 
        __fill_random_buf(buf, len, r);
        return r;