assorted conversions to %p[dD]

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 7496f55..ef5feee 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -226,7 +226,7 @@
 
 	obj->dev_addr = DMA_ERROR_CODE;
 
-	mapping = obj->obj.filp->f_path.dentry->d_inode->i_mapping;
+	mapping = file_inode(obj->obj.filp)->i_mapping;
 	mapping_set_gfp_mask(mapping, GFP_HIGHUSER | __GFP_RECLAIMABLE);
 
 	DRM_DEBUG_DRIVER("alloc obj %p size %zu\n", obj, size);