diff --git a/include/linux/uio.h b/include/linux/uio.h
index 9f158238edba..73b1d5d1e4f1 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -346,6 +346,7 @@ ssize_t __import_iovec(int type, const struct iovec __user *uvec,
 		 struct iov_iter *i, bool compat);
 int import_single_range(int type, void __user *buf, size_t len,
 		 struct iovec *iov, struct iov_iter *i);
+int import_ubuf(int type, void __user *buf, size_t len, struct iov_iter *i);
 
 static inline void iov_iter_ubuf(struct iov_iter *i, unsigned int direction,
 			void __user *buf, size_t count)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index f9a3ff37ecd1..f036760b66e2 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1877,6 +1877,17 @@ int import_single_range(int rw, void __user *buf, size_t len,
 }
 EXPORT_SYMBOL(import_single_range);
 
+int import_ubuf(int rw, void __user *buf, size_t len, struct iov_iter *i)
+{
+	if (len > MAX_RW_COUNT)
+		len = MAX_RW_COUNT;
+	if (unlikely(!access_ok(buf, len)))
+		return -EFAULT;
+
+	iov_iter_ubuf(i, rw, buf, len);
+	return 0;
+}
+
 /**
  * iov_iter_restore() - Restore a &struct iov_iter to the same state as when
  *     iov_iter_save_state() was called.