From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933747AbXHJBM5 (ORCPT ); Thu, 9 Aug 2007 21:12:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755799AbXHJBMs (ORCPT ); Thu, 9 Aug 2007 21:12:48 -0400 Received: from netops-testserver-4-out.sgi.com ([192.48.171.29]:48148 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754825AbXHJBMr (ORCPT ); Thu, 9 Aug 2007 21:12:47 -0400 Date: Thu, 9 Aug 2007 20:12:45 -0500 From: Dean Nelson To: linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, tony.luck@intel.com, jes@sgi.com Subject: [RFC 2/3] SGI Altix cross partition memory (XPMEM) Message-ID: <20070810011245.GC25427@sgi.com> References: <20070810010659.GA25427@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070810010659.GA25427@sgi.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This patch exports zap_page_range as it is needed by XPMEM. Signed-off-by: Dean Nelson --- XPMEM would have used sys_madvise() except that madvise_dontneed() madvise_dontneed() returns an -EINVAL if VM_PFNMAP is set, which is always true for the pages XPMEM imports from other partitions and is also true for uncached pages allocated locally via the mspec allocator. XPMEM needs zap_page_range() functionality for these types of pages as well as 'normal' pages. Index: linux-2.6/mm/memory.c =================================================================== --- linux-2.6.orig/mm/memory.c 2007-08-09 07:07:55.762651612 -0500 +++ linux-2.6/mm/memory.c 2007-08-09 07:15:43.226389312 -0500 @@ -894,6 +894,7 @@ tlb_finish_mmu(tlb, address, end); return end; } +EXPORT_SYMBOL_GPL(zap_page_range); /* * Do a quick page-table lookup for a single page.