unsigned int buf_size_order; /* Order of buffer size */
int extra_reader_sb:1; /* Bool: has extra reader subbuffer */
unsigned long num_subbuf; /* Number of sub-buffers for writer */
unsigned int buf_size_order; /* Order of buffer size */
int extra_reader_sb:1; /* Bool: has extra reader subbuffer */
unsigned long num_subbuf; /* Number of sub-buffers for writer */