diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 9d96357731a3..71dd618db075 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -299,6 +299,7 @@ void __inode_attach_wb(struct inode *inode, struct folio *folio)
 	if (unlikely(cmpxchg(&inode->i_wb, NULL, wb)))
 		wb_put(wb);
 }
+EXPORT_SYMBOL_GPL(__inode_attach_wb);
 
 /**
  * inode_cgwb_move_to_attached - put the inode onto wb->b_attached list