Messages in this thread Patch in this message |  | | | Date | Wed, 30 Jan 2008 11:14:12 -0800 (PST) | | From | Christoph Lameter <> | | Subject | Re: [patch 1/6] mmu_notifier: Core code |
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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);
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