[PATCH] Enable mprotect on huge pages

[karo-tx-linux.git] / include / linux / hugetlb.h

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 68d82ad6b17c29662d40e396fb618d737c63d4bc..fa83836b63d2098e0404a69c74d30d15f8402e6c 100644 (file)
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -41,6 +41,8 @@ struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
                                pmd_t *pmd, int write);
 int is_aligned_hugepage_range(unsigned long addr, unsigned long len);
 int pmd_huge(pmd_t pmd);
+void hugetlb_change_protection(struct vm_area_struct *vma,
+               unsigned long address, unsigned long end, pgprot_t newprot);
 
 #ifndef ARCH_HAS_HUGEPAGE_ONLY_RANGE
 #define is_hugepage_only_range(mm, addr, len)  0
@@ -101,6 +103,8 @@ static inline unsigned long hugetlb_total_pages(void)
 #define free_huge_page(p)                      ({ (void)(p); BUG(); })
 #define hugetlb_fault(mm, vma, addr, write)    ({ BUG(); 0; })
 
+#define hugetlb_change_protection(vma, address, end, newprot)
+
 #ifndef HPAGE_MASK
 #define HPAGE_MASK     PAGE_MASK               /* Keep the compiler happy */
 #define HPAGE_SIZE     PAGE_SIZE