1 files changed, 15 insertions, 0 deletions
diff --git a/mm/util.c b/mm/util.c
index 8e5bd2c9f4b4..9e0c86555adf 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -1091,3 +1091,18 @@ int mmap_file(struct file *file, struct vm_area_struct *vma)
 
 	return err;
 }
+
+void vma_close(struct vm_area_struct *vma)
+{
+	static const struct vm_operations_struct dummy_vm_ops = {};
+
+	if (vma->vm_ops && vma->vm_ops->close) {
+		vma->vm_ops->close(vma);
+
+		/*
+		 * The mapping is in an inconsistent state, and no further hooks
+		 * may be invoked upon it.
+		 */
+		vma->vm_ops = &dummy_vm_ops;
+	}
+}