hugetlb: introduce generic version of huge_ptep_get_and_clear()
[muen/linux.git] / arch / ia64 / include / asm / hugetlb.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_HUGETLB_H
3 #define _ASM_IA64_HUGETLB_H
4
5 #include <asm/page.h>
6
7 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
8 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
9                             unsigned long end, unsigned long floor,
10                             unsigned long ceiling);
11
12 int prepare_hugepage_range(struct file *file,
13                         unsigned long addr, unsigned long len);
14
15 static inline int is_hugepage_only_range(struct mm_struct *mm,
16                                          unsigned long addr,
17                                          unsigned long len)
18 {
19         return (REGION_NUMBER(addr) == RGN_HPAGE ||
20                 REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
21 }
22
23 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
24                                          unsigned long addr, pte_t *ptep)
25 {
26 }
27
28 static inline int huge_pte_none(pte_t pte)
29 {
30         return pte_none(pte);
31 }
32
33 static inline pte_t huge_pte_wrprotect(pte_t pte)
34 {
35         return pte_wrprotect(pte);
36 }
37
38 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
39                                            unsigned long addr, pte_t *ptep)
40 {
41         ptep_set_wrprotect(mm, addr, ptep);
42 }
43
44 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
45                                              unsigned long addr, pte_t *ptep,
46                                              pte_t pte, int dirty)
47 {
48         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
49 }
50
51 static inline pte_t huge_ptep_get(pte_t *ptep)
52 {
53         return *ptep;
54 }
55
56 static inline void arch_clear_hugepage_flags(struct page *page)
57 {
58 }
59
60 #include <asm-generic/hugetlb.h>
61
62 #endif /* _ASM_IA64_HUGETLB_H */