836 static int gntdev_get_page(struct gntdev_copy_batch *batch, void __user *virt,  in gntdev_get_page()  argument
848 	batch->pages[batch->nr_pages++] = page;  in gntdev_get_page()
856 static void gntdev_put_pages(struct gntdev_copy_batch *batch)  in gntdev_put_pages()  argument
860 	for (i = 0; i < batch->nr_pages; i++)  in gntdev_put_pages()
861 		put_page(batch->pages[i]);  in gntdev_put_pages()
862 	batch->nr_pages = 0;  in gntdev_put_pages()
865 static int gntdev_copy(struct gntdev_copy_batch *batch)  in gntdev_copy()  argument
869 	gnttab_batch_copy(batch->ops, batch->nr_ops);  in gntdev_copy()
870 	gntdev_put_pages(batch);  in gntdev_copy()
876 	for (i = 0; i < batch->nr_ops; i++) {  in gntdev_copy()
877 		s16 status = batch->ops[i].status;  in gntdev_copy()
883 		if (__get_user(old_status, batch->status[i]))  in gntdev_copy()
889 		if (__put_user(status, batch->status[i]))  in gntdev_copy()
893 	batch->nr_ops = 0;  in gntdev_copy()
897 static int gntdev_grant_copy_seg(struct gntdev_copy_batch *batch,  in gntdev_grant_copy_seg()  argument
931 		if (batch->nr_ops >= GNTDEV_COPY_BATCH) {  in gntdev_grant_copy_seg()
932 			ret = gntdev_copy(batch);  in gntdev_grant_copy_seg()
939 		op = &batch->ops[batch->nr_ops];  in gntdev_grant_copy_seg()
952 			ret = gntdev_get_page(batch, virt, false, &gfn);  in gntdev_grant_copy_seg()
971 			ret = gntdev_get_page(batch, virt, true, &gfn);  in gntdev_grant_copy_seg()
983 		batch->status[batch->nr_ops] = status;  in gntdev_grant_copy_seg()
984 		batch->nr_ops++;  in gntdev_grant_copy_seg()
993 	struct gntdev_copy_batch batch;  in gntdev_ioctl_grant_copy()  local
1000 	batch.nr_ops = 0;  in gntdev_ioctl_grant_copy()
1001 	batch.nr_pages = 0;  in gntdev_ioctl_grant_copy()
1011 		ret = gntdev_grant_copy_seg(&batch, &seg, &copy.segments[i].status);  in gntdev_ioctl_grant_copy()
1017 	if (batch.nr_ops)  in gntdev_ioctl_grant_copy()
1018 		ret = gntdev_copy(&batch);  in gntdev_ioctl_grant_copy()
1022 	gntdev_put_pages(&batch);  in gntdev_ioctl_grant_copy()