>From 9d09534daec636eafed279352c6b34d3b47c3a09 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 17 Jan 2011 15:09:36 +0100 Subject: [PATCH] mm: System without MMU do not need pte_mkwrite The patch "thp: export maybe_mkwrite" (sha1 14fd403f2146f740942d78af4e0ee59396ad8eab) break systems without MMU. Signed-off-by: Michal Simek --- include/linux/mm.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 956a355..f6385fc 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -470,6 +470,7 @@ static inline void set_compound_order(struct page *page, unsigned long order) page[1].lru.prev = (void *)order; } +#ifdef CONFIG_MMU /* * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when * servicing faults for write access. In the normal case, do always want @@ -482,6 +483,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) pte = pte_mkwrite(pte); return pte; } +#endif /* * Multiple processes may "see" the same page. E.g. for untouched -- 1.5.5.6