diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 593f49cf0ad2045ee5f0931cdfd95cf56a4ff84d..db612375814f86c3bb76d7e287230c23fab936fd 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -269,6 +269,7 @@ void __inode_attach_wb(struct inode *inode, struct page *page)
 	if (unlikely(cmpxchg(&inode->i_wb, NULL, wb)))
 		wb_put(wb);
 }
+EXPORT_SYMBOL_GPL(__inode_attach_wb);
 
 /**
  * locked_inode_to_wb_and_lock_list - determine a locked inode's wb and lock it