From 3ef8fd7f720fc4f462fcdcae2fcde6f1c0536bfe Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 11 Oct 2010 16:03:21 +0200 Subject: [PATCH] Fix migration.c compilation on s390 31bit s390 doesn't have huge pages and failed with: > mm/migrate.c: In function 'remove_migration_pte': > mm/migrate.c:143:3: error: implicit declaration of function 'pte_mkhuge' > mm/migrate.c:143:7: error: incompatible types when assigning to type 'pte_t' from type 'int' Put that code into a ifdef. Reported by Heiko Carstens Signed-off-by: Andi Kleen --- mm/migrate.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/migrate.c b/mm/migrate.c index 55dbc45880c6..f8c9bccf2520 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -139,8 +139,10 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma, pte = pte_mkold(mk_pte(new, vma->vm_page_prot)); if (is_write_migration_entry(entry)) pte = pte_mkwrite(pte); +#ifdef CONFIG_HUGETLB_PAGE if (PageHuge(new)) pte = pte_mkhuge(pte); +#endif flush_cache_page(vma, addr, pte_pfn(pte)); set_pte_at(mm, addr, ptep, pte);