Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758872AbXJXWqn (ORCPT ); Wed, 24 Oct 2007 18:46:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754736AbXJXWqf (ORCPT ); Wed, 24 Oct 2007 18:46:35 -0400 Received: from gw.goop.org ([64.81.55.164]:51739 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753796AbXJXWqf (ORCPT ); Wed, 24 Oct 2007 18:46:35 -0400 Message-ID: <471FCB38.10106@goop.org> Date: Wed, 24 Oct 2007 15:46:16 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.5 (X11/20070727) MIME-Version: 1.0 To: David Chinner CC: Andi Kleen , dean gaudet , Nick Piggin , Xen-devel , Morten@suse.de, Linux Kernel Mailing List , =?ISO-8859-1?Q?B=F8geskov?= , xfs@oss.sgi.com, xfs-masters@oss.sgi.com, Mark Williamson Subject: Re: [PATCH] Allow lazy unmapping by taking extra page references V3 References: <471CEEB4.9040807@goop.org> <20071022190740.GA1695@one.firstfloor.org> <20071022223224.GC995458@sgi.com> <20071022233514.GA9057@one.firstfloor.org> <20071023003641.GF995458@sgi.com> <20071023070414.GM66820511@sgi.com> <20071023093035.GB24536@one.firstfloor.org> <20071024043619.GE66820511@sgi.com> <471ED35F.3020605@goop.org> <20071024214826.GH66820511@sgi.com> In-Reply-To: <20071024214826.GH66820511@sgi.com> X-Enigmail-Version: 0.95.3 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1320 Lines: 35 David Chinner wrote: > Allow lazy unmapping of vmap()d regions be taking a reference > on each page in the region being vmap()ed. The page references > get released after the region is vunmap()ed, thereby ensuring > we don't leave stray mappings on freed pages that could lead to > problems pages being reallocated with incorrect mappings > associated with them. > > Tested with XFS filesystems with 64k directory blocks with > dirstress and XFSQA. > > Version 3: > - compile on latest -git > Not quite: CC mm/vmalloc.o /home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c: In function 'vm_area_alloc_pagearray': /home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: 'GFP_LEVEL_MASK' undeclared (first use in this function) /home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: (Each undeclared identifier is reported only once /home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: for each function it appears in.) make[3]: *** [mm/vmalloc.o] Error 1 make[2]: *** [mm] Error 2 make[2]: *** Waiting for unfinished jobs.... GFP_RECLAM_MASK now? J - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/