thp: madvise(MADV_NOHUGEPAGE)
[linux-2.6.git] / include / linux / huge_mm.h
index 9b48c24..a8b7e42 100644 (file)
@@ -52,10 +52,12 @@ extern pmd_t *page_check_address_pmd(struct page *page,
 #define HPAGE_PMD_SIZE HPAGE_SIZE
 
 #define transparent_hugepage_enabled(__vma)                            \
-       (transparent_hugepage_flags & (1<<TRANSPARENT_HUGEPAGE_FLAG) || \
-        (transparent_hugepage_flags &                                  \
-         (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG) &&                    \
-         (__vma)->vm_flags & VM_HUGEPAGE))
+       ((transparent_hugepage_flags &                                  \
+         (1<<TRANSPARENT_HUGEPAGE_FLAG) ||                             \
+         (transparent_hugepage_flags &                                 \
+          (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG) &&                   \
+          ((__vma)->vm_flags & VM_HUGEPAGE))) &&                       \
+        !((__vma)->vm_flags & VM_NOHUGEPAGE))
 #define transparent_hugepage_defrag(__vma)                             \
        ((transparent_hugepage_flags &                                  \
          (1<<TRANSPARENT_HUGEPAGE_DEFRAG_FLAG)) ||                     \
@@ -103,7 +105,7 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd);
 #if HPAGE_PMD_ORDER > MAX_ORDER
 #error "hugepages can't be allocated by the buddy allocator"
 #endif
-extern int hugepage_madvise(unsigned long *vm_flags);
+extern int hugepage_madvise(unsigned long *vm_flags, int advice);
 extern void __vma_adjust_trans_huge(struct vm_area_struct *vma,
                                    unsigned long start,
                                    unsigned long end,
@@ -141,7 +143,7 @@ static inline int split_huge_page(struct page *page)
        do { } while (0)
 #define wait_split_huge_page(__anon_vma, __pmd)        \
        do { } while (0)
-static inline int hugepage_madvise(unsigned long *vm_flags)
+static inline int hugepage_madvise(unsigned long *vm_flags, int advice)
 {
        BUG();
        return 0;