1 files changed, 45 insertions, 5 deletions

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index d5d6bbe2259e..225164842ab6 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -4,9 +4,11 @@
 #include <linux/mm_types.h>
 #include <linux/fs.h>
 #include <linux/hugetlb_inline.h>
+#include <linux/cgroup.h>
 
 struct ctl_table;
 struct user_struct;
+struct mmu_gather;
 
 #ifdef CONFIG_HUGETLB_PAGE
 
@@ -20,6 +22,11 @@ struct hugepage_subpool {
         long max_hpages, used_hpages;
 };
 
+extern spinlock_t hugetlb_lock;
+extern int hugetlb_max_hstate __read_mostly;
+#define for_each_hstate(h) \
+        for ((h) = hstates; (h) < &hstates[hugetlb_max_hstate]; (h)++)
+
 struct hugepage_subpool *hugepage_new_subpool(long nr_blocks);
 void hugepage_put_subpool(struct hugepage_subpool *spool);
 
@@ -40,9 +47,14 @@ int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
                         struct page **, struct vm_area_struct **,
                         unsigned long *, int *, int, unsigned int flags);
 void unmap_hugepage_range(struct vm_area_struct *,
-                        unsigned long, unsigned long, struct page *);
-void __unmap_hugepage_range(struct vm_area_struct *,
-                        unsigned long, unsigned long, struct page *);
+                          unsigned long, unsigned long, struct page *);
+void __unmap_hugepage_range_final(struct mmu_gather *tlb,
+                          struct vm_area_struct *vma,
+                          unsigned long start, unsigned long end,
+                          struct page *ref_page);
+void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
+                                unsigned long start, unsigned long end,
+                                struct page *ref_page);
 int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
 void hugetlb_report_meminfo(struct seq_file *);
 int hugetlb_report_node_meminfo(int, char *);
@@ -98,7 +110,6 @@ static inline unsigned long hugetlb_total_pages(void)
 #define follow_huge_addr(mm, addr, write)       ERR_PTR(-EINVAL)
 #define copy_hugetlb_page_range(src, dst, vma)  ({ BUG(); 0; })
 #define hugetlb_prefault(mapping, vma)          ({ BUG(); 0; })
-#define unmap_hugepage_range(vma, start, end, page)     BUG()
 static inline void hugetlb_report_meminfo(struct seq_file *m)
 {
 }
@@ -112,13 +123,31 @@ static inline void hugetlb_report_meminfo(struct seq_file *m)
 #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
 #define hugetlb_fault(mm, vma, addr, flags)     ({ BUG(); 0; })
 #define huge_pte_offset(mm, address)    0
-#define dequeue_hwpoisoned_huge_page(page)      0
+static inline int dequeue_hwpoisoned_huge_page(struct page *page)
+{
+        return 0;
+}
+
 static inline void copy_huge_page(struct page *dst, struct page *src)
 {
 }
 
 #define hugetlb_change_protection(vma, address, end, newprot)
 
+static inline void __unmap_hugepage_range_final(struct mmu_gather *tlb,
+                        struct vm_area_struct *vma, unsigned long start,
+                        unsigned long end, struct page *ref_page)
+{
+        BUG();
+}
+
+static inline void __unmap_hugepage_range(struct mmu_gather *tlb,
+                        struct vm_area_struct *vma, unsigned long start,
+                        unsigned long end, struct page *ref_page)
+{
+        BUG();
+}
+
 #endif /* !CONFIG_HUGETLB_PAGE */
 
 #define HUGETLB_ANON_FILE "anon_hugepage"
@@ -199,10 +228,15 @@ struct hstate {
         unsigned long resv_huge_pages;
         unsigned long surplus_huge_pages;
         unsigned long nr_overcommit_huge_pages;
+        struct list_head hugepage_activelist;
         struct list_head hugepage_freelists[MAX_NUMNODES];
         unsigned int nr_huge_pages_node[MAX_NUMNODES];
         unsigned int free_huge_pages_node[MAX_NUMNODES];
         unsigned int surplus_huge_pages_node[MAX_NUMNODES];
+#ifdef CONFIG_CGROUP_HUGETLB
+        /* cgroup control files */
+        struct cftype cgroup_files[5];
+#endif
         char name[HSTATE_NAME_LEN];
 };
 
@@ -302,6 +336,11 @@ static inline unsigned hstate_index_to_shift(unsigned index)
         return hstates[index].order + PAGE_SHIFT;
 }
 
+static inline int hstate_index(struct hstate *h)
+{
+        return h - hstates;
+}
+
 #else
 struct hstate {};
 #define alloc_huge_page_node(h, nid) NULL
@@ -320,6 +359,7 @@ static inline unsigned int pages_per_huge_page(struct hstate *h)
         return 1;
 }
 #define hstate_index_to_shift(index) 0
+#define hstate_index(h) 0
 #endif
 
 #endif /* _LINUX_HUGETLB_H */