diff options
Diffstat (limited to 'mm/mprotect.c')
| -rw-r--r-- | mm/mprotect.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index cc73318dbc25..675e5d34a507 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -329,20 +329,11 @@ static int prot_none_test(unsigned long addr, unsigned long next, return 0; } -static int prot_none_walk(struct vm_area_struct *vma, unsigned long start, - unsigned long end, unsigned long newflags) -{ - pgprot_t new_pgprot = vm_get_page_prot(newflags); - struct mm_walk prot_none_walk = { - .pte_entry = prot_none_pte_entry, - .hugetlb_entry = prot_none_hugetlb_entry, - .test_walk = prot_none_test, - .mm = current->mm, - .private = &new_pgprot, - }; - - return walk_page_range(start, end, &prot_none_walk); -} +static const struct mm_walk_ops prot_none_walk_ops = { + .pte_entry = prot_none_pte_entry, + .hugetlb_entry = prot_none_hugetlb_entry, + .test_walk = prot_none_test, +}; int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, @@ -369,7 +360,10 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, if (arch_has_pfn_modify_check() && (vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP)) && (newflags & (VM_READ|VM_WRITE|VM_EXEC)) == 0) { - error = prot_none_walk(vma, start, end, newflags); + pgprot_t new_pgprot = vm_get_page_prot(newflags); + + error = walk_page_range(current->mm, start, end, + &prot_none_walk_ops, &new_pgprot); if (error) return error; } |