From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 1 Feb 2008 15:19:32 -0800 (PST) From: Christoph Lameter Subject: Re: [patch 2/4] mmu_notifier: Callbacks to invalidate address ranges In-Reply-To: <20080201220952.GA3875@sgi.com> Message-ID: References: <20080201050439.009441434@sgi.com> <20080201050623.344041545@sgi.com> <20080201220952.GA3875@sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Robin Holt Cc: Andrea Arcangeli , Avi Kivity , Izik Eidus , kvm-devel@lists.sourceforge.net, Peter Zijlstra , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com List-ID: On Fri, 1 Feb 2008, Robin Holt wrote: > We are getting this callout when we transition the pte from a read-only > to read-write. Jack and I can not see a reason we would need that > callout. It is causing problems for xpmem in that a write fault goes > to get_user_pages which gets back to do_wp_page that does the callout. Right. You placed it there in the first place. So we can drop the code from do_wp_page? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org