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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 <ak@linux.intel.com>
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@ -139,8 +139,10 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma,
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pte = pte_mkold(mk_pte(new, vma->vm_page_prot));
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if (is_write_migration_entry(entry))
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pte = pte_mkwrite(pte);
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#ifdef CONFIG_HUGETLB_PAGE
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if (PageHuge(new))
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pte = pte_mkhuge(pte);
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#endif
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flush_cache_page(vma, addr, pte_pfn(pte));
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set_pte_at(mm, addr, ptep, pte);
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