hugetlbfs: add missing TLB flush to hugetlb_cow()
[linux-2.6.git] / include / asm-powerpc / hugetlb.h
1 #ifndef _ASM_POWERPC_HUGETLB_H
2 #define _ASM_POWERPC_HUGETLB_H
3
4 #include <asm/page.h>
5
6
7 int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
8                            unsigned long len);
9
10 void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
11                             unsigned long end, unsigned long floor,
12                             unsigned long ceiling);
13
14 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
15                      pte_t *ptep, pte_t pte);
16
17 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
18                               pte_t *ptep);
19
20 /*
21  * If the arch doesn't supply something else, assume that hugepage
22  * size aligned regions are ok without further preparation.
23  */
24 static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
25 {
26         if (len & ~HPAGE_MASK)
27                 return -EINVAL;
28         if (addr & ~HPAGE_MASK)
29                 return -EINVAL;
30         return 0;
31 }
32
33 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
34 {
35 }
36
37 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
38                                          unsigned long addr, pte_t *ptep)
39 {
40 }
41
42 #endif /* _ASM_POWERPC_HUGETLB_H */