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Fix migration.c compilation on s390

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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>
This commit is contained in:
Andi Kleen 2010-10-11 16:03:21 +02:00
parent f672b49b07
commit 3ef8fd7f72
1 changed files with 2 additions and 0 deletions
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2
mm/migrate.c
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@ -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);