static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len, unsigned long long offset, struct aio_context *aio)
static int submit_aio_26(struct aio_context *aio)
static int submit_aio_26(enum aio_type type, int io_fd, char *buf, int len,			 unsigned long long offset, struct aio_context *aio){        return -ENOSYS;}