swiotlb_sync_sg(hwdev, sg, nelems, dir); 
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE); 
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,			   int nelems, int dir){	swiotlb_sync_sg(hwdev, sg, nelems, dir);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/de69e0f0b38a467d881e138a302b005bf31c8400/swiotlb.c/clean/lib/swiotlb.c