diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 3215606..ad89db3 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -511,7 +511,7 @@
 	int i, npages;
 
 	/* This is the shared memory object that backs the GEM resource */
-	mapping = file_inode(obj->filp)->i_mapping;
+	mapping = obj->filp->f_mapping;
 
 	/* We already BUG_ON() for non-page-aligned sizes in
 	 * drm_gem_object_init(), so we should never hit this unless