Merge branch 'x86/urgent' into x86/cleanups
[linux-2.6] / include / asm-x86 / hugetlb.h
1 #ifndef _ASM_X86_HUGETLB_H
2 #define _ASM_X86_HUGETLB_H
3
4 #include <asm/page.h>
5
6
7 static inline int is_hugepage_only_range(struct mm_struct *mm,
8                                          unsigned long addr,
9                                          unsigned long len) {
10         return 0;
11 }
12
13 /*
14  * If the arch doesn't supply something else, assume that hugepage
15  * size aligned regions are ok without further preparation.
16  */
17 static inline int prepare_hugepage_range(struct file *file,
18                         unsigned long addr, unsigned long len)
19 {
20         struct hstate *h = hstate_file(file);
21         if (len & ~huge_page_mask(h))
22                 return -EINVAL;
23         if (addr & ~huge_page_mask(h))
24                 return -EINVAL;
25         return 0;
26 }
27
28 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
29 }
30
31 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
32                                           unsigned long addr, unsigned long end,
33                                           unsigned long floor,
34                                           unsigned long ceiling)
35 {
36         free_pgd_range(tlb, addr, end, floor, ceiling);
37 }
38
39 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
40                                    pte_t *ptep, pte_t pte)
41 {
42         set_pte_at(mm, addr, ptep, pte);
43 }
44
45 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
46                                             unsigned long addr, pte_t *ptep)
47 {
48         return ptep_get_and_clear(mm, addr, ptep);
49 }
50
51 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52                                          unsigned long addr, pte_t *ptep)
53 {
54 }
55
56 static inline int huge_pte_none(pte_t pte)
57 {
58         return pte_none(pte);
59 }
60
61 static inline pte_t huge_pte_wrprotect(pte_t pte)
62 {
63         return pte_wrprotect(pte);
64 }
65
66 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
67                                            unsigned long addr, pte_t *ptep)
68 {
69         ptep_set_wrprotect(mm, addr, ptep);
70 }
71
72 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
73                                              unsigned long addr, pte_t *ptep,
74                                              pte_t pte, int dirty)
75 {
76         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
77 }
78
79 static inline pte_t huge_ptep_get(pte_t *ptep)
80 {
81         return *ptep;
82 }
83
84 static inline int arch_prepare_hugepage(struct page *page)
85 {
86         return 0;
87 }
88
89 static inline void arch_release_hugepage(struct page *page)
90 {
91 }
92
93 #endif /* _ASM_X86_HUGETLB_H */