file_inode(f)->i_mapping is f->f_mapping

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index 88e7fc7..cb8f034 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -231,7 +231,7 @@
 
 	obj->dev_addr = DMA_ERROR_CODE;
 
-	mapping = file_inode(obj->obj.filp)->i_mapping;
+	mapping = obj->obj.filp->f_mapping;
 	mapping_set_gfp_mask(mapping, GFP_HIGHUSER | __GFP_RECLAIMABLE);
 
 	DRM_DEBUG_DRIVER("alloc obj %p size %zu\n", obj, size);
@@ -441,7 +441,7 @@
 		if (sg_alloc_table(sgt, count, GFP_KERNEL))
 			goto free_sgt;
 
-		mapping = file_inode(dobj->obj.filp)->i_mapping;
+		mapping = dobj->obj.filp->f_mapping;
 
 		for_each_sg(sgt->sgl, sg, count, i) {
 			struct page *page;