diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
new file mode 100644
index 0000000..ae45676
--- /dev/null
+++ b/include/linux/hugetlb.h
@@ -0,0 +1,142 @@
+#ifndef _LINUX_HUGETLB_H
+#define _LINUX_HUGETLB_H
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#include <linux/mempolicy.h>
+
+struct ctl_table;
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+	return vma->vm_flags & VM_HUGETLB;
+}
+
+int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
+int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int);
+void zap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long);
+void unmap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long);
+int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
+int hugetlb_report_meminfo(char *);
+int hugetlb_report_node_meminfo(int, char *);
+int is_hugepage_mem_enough(size_t);
+unsigned long hugetlb_total_pages(void);
+struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address,
+			      int write);
+struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
+				pmd_t *pmd, int write);
+int is_aligned_hugepage_range(unsigned long addr, unsigned long len);
+int pmd_huge(pmd_t pmd);
+struct page *alloc_huge_page(void);
+void free_huge_page(struct page *);
+
+extern unsigned long max_huge_pages;
+extern const unsigned long hugetlb_zero, hugetlb_infinity;
+extern int sysctl_hugetlb_shm_group;
+
+#ifndef ARCH_HAS_HUGEPAGE_ONLY_RANGE
+#define is_hugepage_only_range(mm, addr, len)	0
+#define hugetlb_free_pgtables(tlb, prev, start, end) do { } while (0)
+#endif
+
+#ifndef ARCH_HAS_PREPARE_HUGEPAGE_RANGE
+#define prepare_hugepage_range(addr, len)	\
+	is_aligned_hugepage_range(addr, len)
+#else
+int prepare_hugepage_range(unsigned long addr, unsigned long len);
+#endif
+
+#else /* !CONFIG_HUGETLB_PAGE */
+
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+{
+	return 0;
+}
+static inline unsigned long hugetlb_total_pages(void)
+{
+	return 0;
+}
+
+#define follow_hugetlb_page(m,v,p,vs,a,b,i)	({ BUG(); 0; })
+#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 zap_hugepage_range(vma, start, len)	BUG()
+#define unmap_hugepage_range(vma, start, end)	BUG()
+#define is_hugepage_mem_enough(size)		0
+#define hugetlb_report_meminfo(buf)		0
+#define hugetlb_report_node_meminfo(n, buf)	0
+#define follow_huge_pmd(mm, addr, pmd, write)	NULL
+#define is_aligned_hugepage_range(addr, len)	0
+#define prepare_hugepage_range(addr, len)	(-EINVAL)
+#define pmd_huge(x)	0
+#define is_hugepage_only_range(mm, addr, len)	0
+#define hugetlb_free_pgtables(tlb, prev, start, end) do { } while (0)
+#define alloc_huge_page()			({ NULL; })
+#define free_huge_page(p)			({ (void)(p); BUG(); })
+
+#ifndef HPAGE_MASK
+#define HPAGE_MASK	0		/* Keep the compiler happy */
+#define HPAGE_SIZE	0
+#endif
+
+#endif /* !CONFIG_HUGETLB_PAGE */
+
+#ifdef CONFIG_HUGETLBFS
+struct hugetlbfs_config {
+	uid_t   uid;
+	gid_t   gid;
+	umode_t mode;
+	long	nr_blocks;
+	long	nr_inodes;
+};
+
+struct hugetlbfs_sb_info {
+	long	max_blocks;   /* blocks allowed */
+	long	free_blocks;  /* blocks free */
+	long	max_inodes;   /* inodes allowed */
+	long	free_inodes;  /* inodes free */
+	spinlock_t	stat_lock;
+};
+
+
+struct hugetlbfs_inode_info {
+	struct shared_policy policy;
+	struct inode vfs_inode;
+};
+
+static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode)
+{
+	return container_of(inode, struct hugetlbfs_inode_info, vfs_inode);
+}
+
+static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb)
+{
+	return sb->s_fs_info;
+}
+
+extern struct file_operations hugetlbfs_file_operations;
+extern struct vm_operations_struct hugetlb_vm_ops;
+struct file *hugetlb_zero_setup(size_t);
+int hugetlb_get_quota(struct address_space *mapping);
+void hugetlb_put_quota(struct address_space *mapping);
+
+static inline int is_file_hugepages(struct file *file)
+{
+	return file->f_op == &hugetlbfs_file_operations;
+}
+
+static inline void set_file_hugepages(struct file *file)
+{
+	file->f_op = &hugetlbfs_file_operations;
+}
+#else /* !CONFIG_HUGETLBFS */
+
+#define is_file_hugepages(file)		0
+#define set_file_hugepages(file)	BUG()
+#define hugetlb_zero_setup(size)	ERR_PTR(-ENOSYS)
+
+#endif /* !CONFIG_HUGETLBFS */
+
+#endif /* _LINUX_HUGETLB_H */