82 			  struct scatterlist *sg, unsigned int nents);
250 static void rds_iw_set_scatterlist(struct rds_iw_scatterlist *sg,  argument
253 	sg->list = list;
254 	sg->len = sg_len;
255 	sg->dma_len = 0;
256 	sg->dma_npages = 0;
257 	sg->bytes = 0;
261 				  struct rds_iw_scatterlist *sg)  argument
266 	WARN_ON(sg->dma_len);
268 	sg->dma_len = ib_dma_map_sg(dev, sg->list, sg->len, DMA_BIDIRECTIONAL);
269 	if (unlikely(!sg->dma_len)) {
274 	sg->bytes = 0;
275 	sg->dma_npages = 0;
278 	for (i = 0; i < sg->dma_len; ++i) {
279 		unsigned int dma_len = ib_sg_dma_len(dev, &sg->list[i]);
280 		u64 dma_addr = ib_sg_dma_address(dev, &sg->list[i]);
283 		sg->bytes += dma_len;
292 			if (i < sg->dma_len - 1)
297 		sg->dma_npages += (end_addr - dma_addr) >> PAGE_SHIFT;
301 	if (sg->dma_npages > fastreg_message_size)
309 	ib_dma_unmap_sg(rds_iwdev->dev, sg->list, sg->len, DMA_BIDIRECTIONAL);
310 	sg->dma_len = 0;
570 void *rds_iw_get_mr(struct scatterlist *sg, unsigned long nents,  argument
604 	ret = rds_iw_map_reg(rds_iwdev->mr_pool, ibmr, sg, nents);
728 			  struct scatterlist *sg,  argument
736 	rds_iw_set_scatterlist(&mapping->m_sg, sg, sg_len);