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-rw-r--r--include/linux/huge_mm.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index f56cacb4fec3..c8af7a2efb52 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -51,6 +51,9 @@ extern pmd_t *page_check_address_pmd(struct page *page,
51 unsigned long address, 51 unsigned long address,
52 enum page_check_address_pmd_flag flag); 52 enum page_check_address_pmd_flag flag);
53 53
54#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
55#define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
56
54#ifdef CONFIG_TRANSPARENT_HUGEPAGE 57#ifdef CONFIG_TRANSPARENT_HUGEPAGE
55#define HPAGE_PMD_SHIFT HPAGE_SHIFT 58#define HPAGE_PMD_SHIFT HPAGE_SHIFT
56#define HPAGE_PMD_MASK HPAGE_MASK 59#define HPAGE_PMD_MASK HPAGE_MASK
@@ -102,8 +105,6 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd);
102 BUG_ON(pmd_trans_splitting(*____pmd) || \ 105 BUG_ON(pmd_trans_splitting(*____pmd) || \
103 pmd_trans_huge(*____pmd)); \ 106 pmd_trans_huge(*____pmd)); \
104 } while (0) 107 } while (0)
105#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
106#define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
107#if HPAGE_PMD_ORDER > MAX_ORDER 108#if HPAGE_PMD_ORDER > MAX_ORDER
108#error "hugepages can't be allocated by the buddy allocator" 109#error "hugepages can't be allocated by the buddy allocator"
109#endif 110#endif
@@ -158,9 +159,9 @@ static inline struct page *compound_trans_head(struct page *page)
158 return page; 159 return page;
159} 160}
160#else /* CONFIG_TRANSPARENT_HUGEPAGE */ 161#else /* CONFIG_TRANSPARENT_HUGEPAGE */
161#define HPAGE_PMD_SHIFT ({ BUG(); 0; }) 162#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
162#define HPAGE_PMD_MASK ({ BUG(); 0; }) 163#define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; })
163#define HPAGE_PMD_SIZE ({ BUG(); 0; }) 164#define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; })
164 165
165#define hpage_nr_pages(x) 1 166#define hpage_nr_pages(x) 1
166 167