1 files changed, 6 insertions, 0 deletions

diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 2e58e304b8be..b9f53519bbe6 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -199,6 +199,12 @@ extern void forward_pending_sigio(int target);
 extern int start_fork_tramp(void *arg, unsigned long temp_stack,
                             int clone_flags, int (*tramp)(void *));
 
+/* uaccess.c */
+extern unsigned long __do_user_copy(void *to, const void *from, int n,
+                                    void **fault_addr, void **fault_catcher,
+                                    void (*op)(void *to, const void *from,
+                                               int n), int *faulted_out);
+
 #endif
 
 /*