diff --git a/mm/shmem.c b/mm/shmem.c
index bf66d01..d87958a 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2580,6 +2580,7 @@
 	shmem_unacct_size(flags, size);
 	return ERR_PTR(error);
 }
+EXPORT_SYMBOL_GPL(shmem_file_setup);
 
 /**
  * shmem_zero_setup - setup a shared anonymous mapping