drivers/vhost/vringh.c

1041 			   struct iotlb_vec *ivec, u32 perm)
1055 		if (unlikely(ret >= ivec->count)) {
1074 			struct iovec *iovec = ivec->iov.iovec;
1080 			struct bio_vec *bvec = ivec->iov.bvec;
1104 	struct iotlb_vec ivec;
1111 	ivec.iov.iovec = iov.iovec;
1112 	ivec.count = IOTLB_IOV_STRIDE;
1121 				      &ivec, VHOST_MAP_RO);
1128 			iov_iter_init(&iter, ITER_SOURCE, ivec.iov.iovec, ret,
1131 			iov_iter_bvec(&iter, ITER_SOURCE, ivec.iov.bvec, ret,
1150 	struct iotlb_vec ivec;
1157 	ivec.iov.iovec = iov.iovec;
1158 	ivec.count = IOTLB_IOV_STRIDE;
1167 				      &ivec, VHOST_MAP_WO);
1174 			iov_iter_init(&iter, ITER_DEST, ivec.iov.iovec, ret,
1177 			iov_iter_bvec(&iter, ITER_DEST, ivec.iov.bvec, ret,
1196 	struct iotlb_vec ivec;
1204 	ivec.iov.iovec = iov.iovec;
1205 	ivec.count = 1;
1209 			      NULL, &ivec, VHOST_MAP_RO);
1214 		ret = __get_user(tmp, (__virtio16 __user *)ivec.iov.iovec[0].iov_base);
1218 		__virtio16 *from = bvec_kmap_local(&ivec.iov.bvec[0]);
1232 	struct iotlb_vec ivec;
1240 	ivec.iov.iovec = &iov.iovec;
1241 	ivec.count = 1;
1245 			      NULL, &ivec, VHOST_MAP_RO);
1252 		ret = __put_user(tmp, (__virtio16 __user *)ivec.iov.iovec[0].iov_base);
1256 		__virtio16 *to = bvec_kmap_local(&ivec.iov.bvec[0]);