dma_buf_export_sync_file
struct dma_buf_export_sync_file arg;
return dma_buf_export_sync_file(dmabuf, (void __user *)arg);
#define DMA_BUF_IOCTL_EXPORT_SYNC_FILE _IOWR(DMA_BUF_BASE, 2, struct dma_buf_export_sync_file)