extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, unsigned long end,
unsigned char *vec);
-extern int move_huge_pmd(struct vm_area_struct *vma,
+extern bool move_huge_pmd(struct vm_area_struct *vma,
struct vm_area_struct *new_vma,
unsigned long old_addr,
unsigned long new_addr, unsigned long old_end,
#endif
};
-enum page_check_address_pmd_flag {
- PAGE_CHECK_ADDRESS_PMD_FLAG,
- PAGE_CHECK_ADDRESS_PMD_NOTSPLITTING_FLAG,
- PAGE_CHECK_ADDRESS_PMD_SPLITTING_FLAG,
-};
extern pmd_t *page_check_address_pmd(struct page *page,
struct mm_struct *mm,
unsigned long address,
- enum page_check_address_pmd_flag flag,
spinlock_t **ptl);
#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
#endif /* CONFIG_DEBUG_VM */
extern unsigned long transparent_hugepage_flags;
-extern int split_huge_page_to_list(struct page *page, struct list_head *list);
+
+int split_huge_page_to_list(struct page *page, struct list_head *list);
static inline int split_huge_page(struct page *page)
{
return split_huge_page_to_list(page, NULL);
}
-extern void __split_huge_page_pmd(struct vm_area_struct *vma,
- unsigned long address, pmd_t *pmd);
-#define split_huge_page_pmd(__vma, __address, __pmd) \
+
+void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
+ unsigned long address);
+
+#define split_huge_pmd(__vma, __pmd, __address) \
do { \
pmd_t *____pmd = (__pmd); \
- if (unlikely(pmd_trans_huge(*____pmd))) \
- __split_huge_page_pmd(__vma, __address, \
- ____pmd); \
+ if (pmd_trans_huge(*____pmd)) \
+ __split_huge_pmd(__vma, __pmd, __address); \
} while (0)
-#define wait_split_huge_page(__anon_vma, __pmd) \
- do { \
- pmd_t *____pmd = (__pmd); \
- anon_vma_lock_write(__anon_vma); \
- anon_vma_unlock_write(__anon_vma); \
- BUG_ON(pmd_trans_splitting(*____pmd) || \
- pmd_trans_huge(*____pmd)); \
- } while (0)
-extern void split_huge_page_pmd_mm(struct mm_struct *mm, unsigned long address,
- pmd_t *pmd);
+
#if HPAGE_PMD_ORDER >= MAX_ORDER
#error "hugepages can't be allocated by the buddy allocator"
#endif
unsigned long start,
unsigned long end,
long adjust_next);
-extern int __pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
+extern bool __pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
spinlock_t **ptl);
/* mmap_sem must be held on entry */
-static inline int pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
+static inline bool pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
spinlock_t **ptl)
{
VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
if (pmd_trans_huge(*pmd))
return __pmd_trans_huge_lock(pmd, vma, ptl);
else
- return 0;
+ return false;
}
static inline int hpage_nr_pages(struct page *page)
{
{
return 0;
}
-#define split_huge_page_pmd(__vma, __address, __pmd) \
- do { } while (0)
-#define wait_split_huge_page(__anon_vma, __pmd) \
- do { } while (0)
-#define split_huge_page_pmd_mm(__mm, __address, __pmd) \
+#define split_huge_pmd(__vma, __pmd, __address) \
do { } while (0)
static inline int hugepage_madvise(struct vm_area_struct *vma,
unsigned long *vm_flags, int advice)
long adjust_next)
{
}
-static inline int pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
+static inline bool pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma,
spinlock_t **ptl)
{
- return 0;
+ return false;
}
static inline int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,