[ 15/89] ttm: Clear the ttm page allocated from high memory zone correctly

3.2-stable review patch. If anyone has any objections, please let me know. -- From: Zhao Yakui commit ac207ed2471150e06af0afc76e4becc701fa2733 upstream. The TTM page can be allocated from high memory. In such case it is wrong to use the page_address(page) as the virtual

[ 15/89] ttm: Clear the ttm page allocated from high memory zone correctly

3.2-stable review patch. If anyone has any objections, please let me know. -- From: Zhao Yakui yakui.z...@intel.com commit ac207ed2471150e06af0afc76e4becc701fa2733 upstream. The TTM page can be allocated from high memory. In such case it is wrong to use the page_address(page)