cio2_buffer
vbq->buf_struct_size = sizeof(struct cio2_buffer);
arrange(q->bufs, sizeof(struct cio2_buffer *),
struct cio2_buffer *b,
struct cio2_buffer *b;
struct cio2_buffer *b = to_cio2_buffer(vb);
struct cio2_buffer *b = to_cio2_buffer(vb);
struct cio2_buffer *b = to_cio2_buffer(vb);
#define to_cio2_buffer(vb) container_of(vb, struct cio2_buffer, vbb.vb2_buf)
struct cio2_buffer *bufs[CIO2_MAX_BUFFERS];