Initial commit from HTC m7ul-3.4.10-jb-crc-ddcfb8c
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
new file mode 100644
index 0000000..de9befa
--- /dev/null
+++ b/include/linux/hugetlb.h
@@ -0,0 +1,306 @@
+#ifndef _LINUX_HUGETLB_H
+#define _LINUX_HUGETLB_H
+
+#include <linux/mm_types.h>
+#include <linux/fs.h>
+#include <linux/hugetlb_inline.h>
+
+struct ctl_table;
+struct user_struct;
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#include <linux/mempolicy.h>
+#include <linux/shm.h>
+#include <asm/tlbflush.h>
+
+struct hugepage_subpool {
+ spinlock_t lock;
+ long count;
+ long max_hpages, used_hpages;
+};
+
+struct hugepage_subpool *hugepage_new_subpool(long nr_blocks);
+void hugepage_put_subpool(struct hugepage_subpool *spool);
+
+int PageHuge(struct page *page);
+
+void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
+int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
+int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
+int hugetlb_treat_movable_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
+
+#ifdef CONFIG_NUMA
+int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int,
+ void __user *, size_t *, loff_t *);
+#endif
+
+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, 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 *);
+int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
+void hugetlb_report_meminfo(struct seq_file *);
+int hugetlb_report_node_meminfo(int, char *);
+unsigned long hugetlb_total_pages(void);
+int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
+ unsigned long address, unsigned int flags);
+int hugetlb_reserve_pages(struct inode *inode, long from, long to,
+ struct vm_area_struct *vma,
+ vm_flags_t vm_flags);
+void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed);
+int dequeue_hwpoisoned_huge_page(struct page *page);
+void copy_huge_page(struct page *dst, struct page *src);
+
+extern unsigned long hugepages_treat_as_movable;
+extern const unsigned long hugetlb_zero, hugetlb_infinity;
+extern int sysctl_hugetlb_shm_group;
+extern struct list_head huge_boot_pages;
+
+
+pte_t *huge_pte_alloc(struct mm_struct *mm,
+ unsigned long addr, unsigned long sz);
+pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr);
+int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep);
+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);
+struct page *follow_huge_pud(struct mm_struct *mm, unsigned long address,
+ pud_t *pud, int write);
+int pmd_huge(pmd_t pmd);
+int pud_huge(pud_t pmd);
+void hugetlb_change_protection(struct vm_area_struct *vma,
+ unsigned long address, unsigned long end, pgprot_t newprot);
+
+#else
+
+static inline int PageHuge(struct page *page)
+{
+ return 0;
+}
+
+static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
+{
+}
+
+static inline unsigned long hugetlb_total_pages(void)
+{
+ return 0;
+}
+
+#define follow_hugetlb_page(m,v,p,vs,a,b,i,w) ({ 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 unmap_hugepage_range(vma, start, end, page) BUG()
+static inline void hugetlb_report_meminfo(struct seq_file *m)
+{
+}
+#define hugetlb_report_node_meminfo(n, buf) 0
+#define follow_huge_pmd(mm, addr, pmd, write) NULL
+#define follow_huge_pud(mm, addr, pud, write) NULL
+#define prepare_hugepage_range(file, addr, len) (-EINVAL)
+#define pmd_huge(x) 0
+#define pud_huge(x) 0
+#define is_hugepage_only_range(mm, addr, len) 0
+#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 void copy_huge_page(struct page *dst, struct page *src)
+{
+}
+
+#define hugetlb_change_protection(vma, address, end, newprot)
+
+#endif
+
+#define HUGETLB_ANON_FILE "anon_hugepage"
+
+enum {
+ HUGETLB_SHMFS_INODE = 1,
+ HUGETLB_ANONHUGE_INODE = 2,
+};
+
+#ifdef CONFIG_HUGETLBFS
+struct hugetlbfs_sb_info {
+ long max_inodes;
+ long free_inodes;
+ spinlock_t stat_lock;
+ struct hstate *hstate;
+ struct hugepage_subpool *spool;
+};
+
+static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+extern const struct file_operations hugetlbfs_file_operations;
+extern const struct vm_operations_struct hugetlb_vm_ops;
+struct file *hugetlb_file_setup(const char *name, unsigned long addr,
+ size_t size, vm_flags_t acct,
+ struct user_struct **user, int creat_flags);
+
+static inline int is_file_hugepages(struct file *file)
+{
+ if (file->f_op == &hugetlbfs_file_operations)
+ return 1;
+ if (is_file_shm_hugepages(file))
+ return 1;
+
+ return 0;
+}
+
+#else
+
+#define is_file_hugepages(file) 0
+static inline struct file *
+hugetlb_file_setup(const char *name, unsigned long addr, size_t size,
+ vm_flags_t acctflag, struct user_struct **user, int creat_flags)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
+#endif
+
+#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
+unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags);
+#endif
+
+#ifdef CONFIG_HUGETLB_PAGE
+
+#define HSTATE_NAME_LEN 32
+struct hstate {
+ int next_nid_to_alloc;
+ int next_nid_to_free;
+ unsigned int order;
+ unsigned long mask;
+ unsigned long max_huge_pages;
+ unsigned long nr_huge_pages;
+ unsigned long free_huge_pages;
+ unsigned long resv_huge_pages;
+ unsigned long surplus_huge_pages;
+ unsigned long nr_overcommit_huge_pages;
+ 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];
+ char name[HSTATE_NAME_LEN];
+};
+
+struct huge_bootmem_page {
+ struct list_head list;
+ struct hstate *hstate;
+#ifdef CONFIG_HIGHMEM
+ phys_addr_t phys;
+#endif
+};
+
+struct page *alloc_huge_page_node(struct hstate *h, int nid);
+
+int __init alloc_bootmem_huge_page(struct hstate *h);
+
+void __init hugetlb_add_hstate(unsigned order);
+struct hstate *size_to_hstate(unsigned long size);
+
+#ifndef HUGE_MAX_HSTATE
+#define HUGE_MAX_HSTATE 1
+#endif
+
+extern struct hstate hstates[HUGE_MAX_HSTATE];
+extern unsigned int default_hstate_idx;
+
+#define default_hstate (hstates[default_hstate_idx])
+
+static inline struct hstate *hstate_inode(struct inode *i)
+{
+ struct hugetlbfs_sb_info *hsb;
+ hsb = HUGETLBFS_SB(i->i_sb);
+ return hsb->hstate;
+}
+
+static inline struct hstate *hstate_file(struct file *f)
+{
+ return hstate_inode(f->f_dentry->d_inode);
+}
+
+static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
+{
+ return hstate_file(vma->vm_file);
+}
+
+static inline unsigned long huge_page_size(struct hstate *h)
+{
+ return (unsigned long)PAGE_SIZE << h->order;
+}
+
+extern unsigned long vma_kernel_pagesize(struct vm_area_struct *vma);
+
+extern unsigned long vma_mmu_pagesize(struct vm_area_struct *vma);
+
+static inline unsigned long huge_page_mask(struct hstate *h)
+{
+ return h->mask;
+}
+
+static inline unsigned int huge_page_order(struct hstate *h)
+{
+ return h->order;
+}
+
+static inline unsigned huge_page_shift(struct hstate *h)
+{
+ return h->order + PAGE_SHIFT;
+}
+
+static inline unsigned int pages_per_huge_page(struct hstate *h)
+{
+ return 1 << h->order;
+}
+
+static inline unsigned int blocks_per_huge_page(struct hstate *h)
+{
+ return huge_page_size(h) / 512;
+}
+
+#include <asm/hugetlb.h>
+
+static inline struct hstate *page_hstate(struct page *page)
+{
+ return size_to_hstate(PAGE_SIZE << compound_order(page));
+}
+
+static inline unsigned hstate_index_to_shift(unsigned index)
+{
+ return hstates[index].order + PAGE_SHIFT;
+}
+
+#else
+struct hstate {};
+#define alloc_huge_page_node(h, nid) NULL
+#define alloc_bootmem_huge_page(h) NULL
+#define hstate_file(f) NULL
+#define hstate_vma(v) NULL
+#define hstate_inode(i) NULL
+#define huge_page_size(h) PAGE_SIZE
+#define huge_page_mask(h) PAGE_MASK
+#define vma_kernel_pagesize(v) PAGE_SIZE
+#define vma_mmu_pagesize(v) PAGE_SIZE
+#define huge_page_order(h) 0
+#define huge_page_shift(h) PAGE_SHIFT
+static inline unsigned int pages_per_huge_page(struct hstate *h)
+{
+ return 1;
+}
+#define hstate_index_to_shift(index) 0
+#endif
+
+#endif