+extern int fallocate(int fd, int mode, off_t offset, off_t len);
+extern int posix_fallocate(int fd, off_t offset, off_t len);
+extern int sync_file_range(int fd, off64_t offset, off64_t nbytes,
+ unsigned int flags);
+extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
+
+#endif /* FIO_HELPERS_H_ */