799 static int gntdev_get_page(struct gntdev_copy_batch *batch, void __user *virt,  in gntdev_get_page()  argument
807 	ret = pin_user_pages_fast(addr, 1, batch->writeable ? FOLL_WRITE : 0, &page);  in gntdev_get_page()
811 	batch->pages[batch->nr_pages++] = page;  in gntdev_get_page()
819 static void gntdev_put_pages(struct gntdev_copy_batch *batch)  in gntdev_put_pages()  argument
821 	unpin_user_pages_dirty_lock(batch->pages, batch->nr_pages, batch->writeable);  in gntdev_put_pages()
822 	batch->nr_pages = 0;  in gntdev_put_pages()
823 	batch->writeable = false;  in gntdev_put_pages()
826 static int gntdev_copy(struct gntdev_copy_batch *batch)  in gntdev_copy()  argument
830 	gnttab_batch_copy(batch->ops, batch->nr_ops);  in gntdev_copy()
831 	gntdev_put_pages(batch);  in gntdev_copy()
837 	for (i = 0; i < batch->nr_ops; i++) {  in gntdev_copy()
838 		s16 status = batch->ops[i].status;  in gntdev_copy()
844 		if (__get_user(old_status, batch->status[i]))  in gntdev_copy()
850 		if (__put_user(status, batch->status[i]))  in gntdev_copy()
854 	batch->nr_ops = 0;  in gntdev_copy()
858 static int gntdev_grant_copy_seg(struct gntdev_copy_batch *batch,  in gntdev_grant_copy_seg()  argument
892 		if (batch->nr_ops >= GNTDEV_COPY_BATCH) {  in gntdev_grant_copy_seg()
893 			ret = gntdev_copy(batch);  in gntdev_grant_copy_seg()
900 		op = &batch->ops[batch->nr_ops];  in gntdev_grant_copy_seg()
912 			batch->writeable = false;  in gntdev_grant_copy_seg()
914 			ret = gntdev_get_page(batch, virt, &gfn);  in gntdev_grant_copy_seg()
932 			batch->writeable = true;  in gntdev_grant_copy_seg()
934 			ret = gntdev_get_page(batch, virt, &gfn);  in gntdev_grant_copy_seg()
946 		batch->status[batch->nr_ops] = status;  in gntdev_grant_copy_seg()
947 		batch->nr_ops++;  in gntdev_grant_copy_seg()
956 	struct gntdev_copy_batch batch;  in gntdev_ioctl_grant_copy()  local
963 	batch.nr_ops = 0;  in gntdev_ioctl_grant_copy()
964 	batch.nr_pages = 0;  in gntdev_ioctl_grant_copy()
974 		ret = gntdev_grant_copy_seg(&batch, &seg, &copy.segments[i].status);  in gntdev_ioctl_grant_copy()
980 	if (batch.nr_ops)  in gntdev_ioctl_grant_copy()
981 		ret = gntdev_copy(&batch);  in gntdev_ioctl_grant_copy()
985 	gntdev_put_pages(&batch);  in gntdev_ioctl_grant_copy()