80 				      struct vringh_kiov *iov,  in vringh_iov_xfer()  argument
88 	while (len && iov->i < iov->used) {  in vringh_iov_xfer()
91 		partlen = min(iov->iov[iov->i].iov_len, len);  in vringh_iov_xfer()
92 		err = xfer(vrh, iov->iov[iov->i].iov_base, ptr, partlen);  in vringh_iov_xfer()
98 		iov->consumed += partlen;  in vringh_iov_xfer()
99 		iov->iov[iov->i].iov_len -= partlen;  in vringh_iov_xfer()
100 		iov->iov[iov->i].iov_base += partlen;  in vringh_iov_xfer()
102 		if (!iov->iov[iov->i].iov_len) {  in vringh_iov_xfer()
104 			iov->iov[iov->i].iov_len = iov->consumed;  in vringh_iov_xfer()
105 			iov->iov[iov->i].iov_base -= iov->consumed;  in vringh_iov_xfer()
108 			iov->consumed = 0;  in vringh_iov_xfer()
109 			iov->i++;  in vringh_iov_xfer()
191 static int resize_iovec(struct vringh_kiov *iov, gfp_t gfp)  in resize_iovec()  argument
194 	unsigned int flag, new_num = (iov->max_num & ~VRINGH_IOV_ALLOCATED) * 2;  in resize_iovec()
199 	flag = (iov->max_num & VRINGH_IOV_ALLOCATED);  in resize_iovec()
201 		new = krealloc(iov->iov, new_num * sizeof(struct iovec), gfp);  in resize_iovec()
205 			memcpy(new, iov->iov,  in resize_iovec()
206 			       iov->max_num * sizeof(struct iovec));  in resize_iovec()
212 	iov->iov = new;  in resize_iovec()
213 	iov->max_num = (new_num | flag);  in resize_iovec()
298 		struct vringh_kiov *iov;  in __vringh_iov()  local
346 			iov = wiov;  in __vringh_iov()
348 			iov = riov;  in __vringh_iov()
357 		if (!iov) {  in __vringh_iov()
375 		if (unlikely(iov->used == (iov->max_num & ~VRINGH_IOV_ALLOCATED))) {  in __vringh_iov()
376 			err = resize_iovec(iov, gfp);  in __vringh_iov()
381 		iov->iov[iov->used].iov_base = addr;  in __vringh_iov()
382 		iov->iov[iov->used].iov_len = len;  in __vringh_iov()
383 		iov->used++;  in __vringh_iov()
692 	BUILD_BUG_ON(offsetof(struct vringh_kiov, iov) !=  in vringh_getdesc_user()
693 		     offsetof(struct vringh_iov, iov));  in vringh_getdesc_user()
1074 			   u64 addr, u64 len, struct bio_vec iov[],  in iotlb_translate()  argument
1103 		iov[ret].bv_page = pfn_to_page(pfn);  in iotlb_translate()
1104 		iov[ret].bv_len = min(len - s, size);  in iotlb_translate()
1105 		iov[ret].bv_offset = pa & (PAGE_SIZE - 1);  in iotlb_translate()
1118 	struct bio_vec iov[16];  in copy_from_iotlb()  local
1122 			      len, iov, 16, VHOST_MAP_RO);  in copy_from_iotlb()
1126 	iov_iter_bvec(&iter, READ, iov, ret, len);  in copy_from_iotlb()
1137 	struct bio_vec iov[16];  in copy_to_iotlb()  local
1141 			      len, iov, 16, VHOST_MAP_WO);  in copy_to_iotlb()
1145 	iov_iter_bvec(&iter, WRITE, iov, ret, len);  in copy_to_iotlb()
1153 	struct bio_vec iov;  in getu16_iotlb()  local
1159 			      &iov, 1, VHOST_MAP_RO);  in getu16_iotlb()
1163 	kaddr = kmap_atomic(iov.bv_page);  in getu16_iotlb()
1164 	from = kaddr + iov.bv_offset;  in getu16_iotlb()
1174 	struct bio_vec iov;  in putu16_iotlb()  local
1180 			      &iov, 1, VHOST_MAP_WO);  in putu16_iotlb()
1184 	kaddr = kmap_atomic(iov.bv_page);  in putu16_iotlb()
1185 	to = kaddr + iov.bv_offset;  in putu16_iotlb()