#include "compiler/compiler.h"
+#include <sys/types.h>
#include <time.h>
struct in_addr;
extern int _weak clock_gettime(clockid_t clk_id, struct timespec *ts);
extern int _weak sync_file_range(int fd, off64_t offset, off64_t nbytes,
unsigned int flags);
+extern int _weak posix_fadvise(int fd, off_t offset, off_t len, int advice);
#endif /* FIO_HELPERS_H_ */