From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 30 Jan 2008 11:14:12 -0800 (PST) From: Christoph Lameter Subject: Re: [patch 1/6] mmu_notifier: Core code In-Reply-To: <20080130180207.GU26420@sgi.com> Message-ID: References: <20080130022909.677301714@sgi.com> <20080130022944.236370194@sgi.com> <20080130180207.GU26420@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 , Nick Piggin , kvm-devel@lists.sourceforge.net, Benjamin Herrenschmidt , Peter Zijlstra , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com, Hugh Dickins List-ID: Ok. So I added the following patch: --- include/linux/mmu_notifier.h | 1 + mm/mmu_notifier.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) Index: linux-2.6/include/linux/mmu_notifier.h =================================================================== --- linux-2.6.orig/include/linux/mmu_notifier.h 2008-01-30 11:09:06.000000000 -0800 +++ linux-2.6/include/linux/mmu_notifier.h 2008-01-30 11:10:38.000000000 -0800 @@ -146,6 +146,7 @@ static inline void mmu_notifier_head_ini extern void mmu_rmap_notifier_register(struct mmu_rmap_notifier *mrn); extern void mmu_rmap_notifier_unregister(struct mmu_rmap_notifier *mrn); +extern void mmu_rmap_export_page(struct page *page); extern struct hlist_head mmu_rmap_notifier_list; Index: linux-2.6/mm/mmu_notifier.c =================================================================== --- linux-2.6.orig/mm/mmu_notifier.c 2008-01-30 11:09:01.000000000 -0800 +++ linux-2.6/mm/mmu_notifier.c 2008-01-30 11:12:10.000000000 -0800 @@ -99,3 +99,15 @@ void mmu_rmap_notifier_unregister(struct } EXPORT_SYMBOL(mmu_rmap_notifier_unregister); +/* + * Export a page. + * + * Pagelock must be held. + * Must be called before a page is put on an external rmap. + */ +void mmu_rmap_export_page(struct page *page) +{ + BUG_ON(!PageLocked(page)); + SetPageExternalRmap(page); +} +EXPORT_SYMBOL(mmu_rmap_export_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