DMA_BUF_SYNC_WRITE 374 drivers/dma-buf/dma-buf.c case DMA_BUF_SYNC_WRITE: DMA_BUF_SYNC_WRITE 32 include/uapi/linux/dma-buf.h #define DMA_BUF_SYNC_RW (DMA_BUF_SYNC_READ | DMA_BUF_SYNC_WRITE)