wb_put
wb_put(last_wb);
wb_put(last_wb);
wb_put(wb);
wb_put(wb);
wb_put(wb); /* @inode already has ref */
wb_put(wb);
wb_put(new_wb);
wb_put(new_wb);
wb_put(new_wb);
wb_put(new_wb);
wb_put(wbc->wb);
wb_put(inode->i_wb);
wb_put(wb);
wb_put(wb);
wb_put(wb);
wb_put(wb);