struct ctl_table;
struct user_struct;
struct mmu_gather;
+struct node;
-#ifndef is_hugepd
+#ifndef CONFIG_ARCH_HAS_HUGEPD
typedef struct { unsigned long pd; } hugepd_t;
#define is_hugepd(hugepd) (0)
#define __hugepd(x) ((hugepd_t) { (x) })
#endif
};
+struct hugetlb_vma_lock {
+ struct kref refs;
+ struct rw_semaphore rw_sema;
+ struct vm_area_struct *vma;
+};
+
extern struct resv_map *resv_map_alloc(void);
void resv_map_release(struct kref *ref);
long min_hpages);
void hugepage_put_subpool(struct hugepage_subpool *spool);
-void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
+void hugetlb_dup_vma_private(struct vm_area_struct *vma);
void clear_vma_resv_huge_pages(struct vm_area_struct *vma);
int hugetlb_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *);
int hugetlb_overcommit_handler(struct ctl_table *, int, void *, size_t *,
struct page *follow_huge_pgd(struct mm_struct *mm, unsigned long address,
pgd_t *pgd, int flags);
+void hugetlb_vma_lock_read(struct vm_area_struct *vma);
+void hugetlb_vma_unlock_read(struct vm_area_struct *vma);
+void hugetlb_vma_lock_write(struct vm_area_struct *vma);
+void hugetlb_vma_unlock_write(struct vm_area_struct *vma);
+int hugetlb_vma_trylock_write(struct vm_area_struct *vma);
+void hugetlb_vma_assert_locked(struct vm_area_struct *vma);
+void hugetlb_vma_lock_release(struct kref *kref);
+
int pmd_huge(pmd_t pmd);
int pud_huge(pud_t pud);
unsigned long hugetlb_change_protection(struct vm_area_struct *vma,
#else /* !CONFIG_HUGETLB_PAGE */
-static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
+static inline void hugetlb_dup_vma_private(struct vm_area_struct *vma)
{
}
return -EINVAL;
}
+static inline void hugetlb_vma_lock_read(struct vm_area_struct *vma)
+{
+}
+
+static inline void hugetlb_vma_unlock_read(struct vm_area_struct *vma)
+{
+}
+
+static inline void hugetlb_vma_lock_write(struct vm_area_struct *vma)
+{
+}
+
+static inline void hugetlb_vma_unlock_write(struct vm_area_struct *vma)
+{
+}
+
+static inline int hugetlb_vma_trylock_write(struct vm_area_struct *vma)
+{
+ return 1;
+}
+
+static inline void hugetlb_vma_assert_locked(struct vm_area_struct *vma)
+{
+}
+
static inline int pmd_huge(pmd_t pmd)
{
return 0;
nodemask_t *nmask, gfp_t gfp_mask);
struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
unsigned long address);
-int huge_add_to_page_cache(struct page *page, struct address_space *mapping,
+int hugetlb_add_to_page_cache(struct page *page, struct address_space *mapping,
pgoff_t idx);
void restore_reserve_on_error(struct hstate *h, struct vm_area_struct *vma,
unsigned long address, struct page *page);
}
#endif
+#ifdef CONFIG_NUMA
+void hugetlb_register_node(struct node *node);
+void hugetlb_unregister_node(struct node *node);
+#endif
+
#else /* CONFIG_HUGETLB_PAGE */
struct hstate {};
pte_t *ptep, pte_t pte)
{
}
+
+static inline void hugetlb_register_node(struct node *node)
+{
+}
+
+static inline void hugetlb_unregister_node(struct node *node)
+{
+}
#endif /* CONFIG_HUGETLB_PAGE */
static inline spinlock_t *huge_pte_lock(struct hstate *h,
#if defined(CONFIG_HUGETLB_PAGE) && defined(CONFIG_CMA)
extern void __init hugetlb_cma_reserve(int order);
-extern void __init hugetlb_cma_check(void);
#else
static inline __init void hugetlb_cma_reserve(int order)
{
}
-static inline __init void hugetlb_cma_check(void)
-{
-}
#endif
bool want_pmd_share(struct vm_area_struct *vma, unsigned long addr);