On 3/21/19 4:11 PM, Christoph Hellwig wrote: > Provide a nice little shortcut for mapping a single bvec. > > Signed-off-by: Christoph Hellwig <[email protected]> > --- > include/linux/blkdev.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index 5279104527ad..322ff969659c 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -641,6 +641,10 @@ static inline bool blk_account_rq(struct request *rq) > #define rq_dma_dir(rq) \ > (op_is_write(req_op(rq)) ? DMA_TO_DEVICE : DMA_FROM_DEVICE) > > +#define dma_map_bvec(dev, bv, dir, attrs) \ > + dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \ > + (dir), (attrs)) > + > static inline bool queue_is_mq(struct request_queue *q) > { > return q->mq_ops; >
Reviewed-by: Chaitanya Kulkarni <[email protected]>
