Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _LINUX_HUGETLB_H |
| 2 | #define _LINUX_HUGETLB_H |
| 3 | |
Alexey Dobriyan | 4e950f6 | 2007-07-30 02:36:13 +0400 | [diff] [blame] | 4 | #include <linux/fs.h> |
| 5 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #ifdef CONFIG_HUGETLB_PAGE |
| 7 | |
| 8 | #include <linux/mempolicy.h> |
Adam Litke | 516dffd | 2007-03-01 15:46:08 -0800 | [diff] [blame] | 9 | #include <linux/shm.h> |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 10 | #include <asm/tlbflush.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| 12 | struct ctl_table; |
| 13 | |
Wu Fengguang | 20a0307 | 2009-06-16 15:32:22 -0700 | [diff] [blame] | 14 | int PageHuge(struct page *page); |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | static inline int is_vm_hugetlb_page(struct vm_area_struct *vma) |
| 17 | { |
| 18 | return vma->vm_flags & VM_HUGETLB; |
| 19 | } |
| 20 | |
Mel Gorman | a1e7877 | 2008-07-23 21:27:23 -0700 | [diff] [blame] | 21 | void reset_vma_resv_huge_pages(struct vm_area_struct *vma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); |
Nishanth Aravamudan | a3d0c6a | 2008-02-08 04:18:18 -0800 | [diff] [blame] | 23 | int hugetlb_overcommit_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); |
Mel Gorman | 396faf0 | 2007-07-17 04:03:13 -0700 | [diff] [blame] | 24 | int hugetlb_treat_movable_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *); |
Adam Litke | 5b23dbe | 2007-11-14 16:59:33 -0800 | [diff] [blame] | 26 | int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int, int); |
Mel Gorman | 04f2cbe | 2008-07-23 21:27:25 -0700 | [diff] [blame] | 27 | void unmap_hugepage_range(struct vm_area_struct *, |
| 28 | unsigned long, unsigned long, struct page *); |
| 29 | void __unmap_hugepage_range(struct vm_area_struct *, |
| 30 | unsigned long, unsigned long, struct page *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | int hugetlb_prefault(struct address_space *, struct vm_area_struct *); |
Alexey Dobriyan | e1759c2 | 2008-10-15 23:50:22 +0400 | [diff] [blame] | 32 | void hugetlb_report_meminfo(struct seq_file *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | int hugetlb_report_node_meminfo(int, char *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | unsigned long hugetlb_total_pages(void); |
Hugh Dickins | ac9b9c6 | 2005-10-20 16:24:28 +0100 | [diff] [blame] | 35 | int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, |
| 36 | unsigned long address, int write_access); |
Mel Gorman | a1e7877 | 2008-07-23 21:27:23 -0700 | [diff] [blame] | 37 | int hugetlb_reserve_pages(struct inode *inode, long from, long to, |
Mel Gorman | 5a6fe12 | 2009-02-10 14:02:27 +0000 | [diff] [blame] | 38 | struct vm_area_struct *vma, |
| 39 | int acctflags); |
Chen, Kenneth W | a43a8c3 | 2006-06-23 02:03:15 -0700 | [diff] [blame] | 40 | void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Mel Gorman | 396faf0 | 2007-07-17 04:03:13 -0700 | [diff] [blame] | 42 | extern unsigned long hugepages_treat_as_movable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | extern const unsigned long hugetlb_zero, hugetlb_infinity; |
| 44 | extern int sysctl_hugetlb_shm_group; |
Jon Tollefson | 53ba51d | 2008-07-23 21:27:52 -0700 | [diff] [blame] | 45 | extern struct list_head huge_boot_pages; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 47 | /* arch callbacks */ |
| 48 | |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 49 | pte_t *huge_pte_alloc(struct mm_struct *mm, |
| 50 | unsigned long addr, unsigned long sz); |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 51 | pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr); |
Chen, Kenneth W | 39dde65 | 2006-12-06 20:32:03 -0800 | [diff] [blame] | 52 | int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep); |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 53 | struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, |
| 54 | int write); |
| 55 | struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, |
| 56 | pmd_t *pmd, int write); |
Andi Kleen | ceb8687 | 2008-07-23 21:27:50 -0700 | [diff] [blame] | 57 | struct page *follow_huge_pud(struct mm_struct *mm, unsigned long address, |
| 58 | pud_t *pud, int write); |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 59 | int pmd_huge(pmd_t pmd); |
Andi Kleen | ceb8687 | 2008-07-23 21:27:50 -0700 | [diff] [blame] | 60 | int pud_huge(pud_t pmd); |
Zhang, Yanmin | 8f86059 | 2006-03-22 00:08:50 -0800 | [diff] [blame] | 61 | void hugetlb_change_protection(struct vm_area_struct *vma, |
| 62 | unsigned long address, unsigned long end, pgprot_t newprot); |
David Gibson | 63551ae | 2005-06-21 17:14:44 -0700 | [diff] [blame] | 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #else /* !CONFIG_HUGETLB_PAGE */ |
| 65 | |
Wu Fengguang | 20a0307 | 2009-06-16 15:32:22 -0700 | [diff] [blame] | 66 | static inline int PageHuge(struct page *page) |
| 67 | { |
| 68 | return 0; |
| 69 | } |
| 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | static inline int is_vm_hugetlb_page(struct vm_area_struct *vma) |
| 72 | { |
| 73 | return 0; |
| 74 | } |
Mel Gorman | a1e7877 | 2008-07-23 21:27:23 -0700 | [diff] [blame] | 75 | |
| 76 | static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma) |
| 77 | { |
| 78 | } |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | static inline unsigned long hugetlb_total_pages(void) |
| 81 | { |
| 82 | return 0; |
| 83 | } |
| 84 | |
Adam Litke | 5b23dbe | 2007-11-14 16:59:33 -0800 | [diff] [blame] | 85 | #define follow_hugetlb_page(m,v,p,vs,a,b,i,w) ({ BUG(); 0; }) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | #define follow_huge_addr(mm, addr, write) ERR_PTR(-EINVAL) |
| 87 | #define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; }) |
| 88 | #define hugetlb_prefault(mapping, vma) ({ BUG(); 0; }) |
Mel Gorman | 04f2cbe | 2008-07-23 21:27:25 -0700 | [diff] [blame] | 89 | #define unmap_hugepage_range(vma, start, end, page) BUG() |
Alexey Dobriyan | e1759c2 | 2008-10-15 23:50:22 +0400 | [diff] [blame] | 90 | static inline void hugetlb_report_meminfo(struct seq_file *m) |
| 91 | { |
| 92 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | #define hugetlb_report_node_meminfo(n, buf) 0 |
| 94 | #define follow_huge_pmd(mm, addr, pmd, write) NULL |
Andi Kleen | ceb8687 | 2008-07-23 21:27:50 -0700 | [diff] [blame] | 95 | #define follow_huge_pud(mm, addr, pud, write) NULL |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 96 | #define prepare_hugepage_range(file, addr, len) (-EINVAL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | #define pmd_huge(x) 0 |
Andi Kleen | ceb8687 | 2008-07-23 21:27:50 -0700 | [diff] [blame] | 98 | #define pud_huge(x) 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | #define is_hugepage_only_range(mm, addr, len) 0 |
David Gibson | 9da61ae | 2006-03-22 00:08:57 -0800 | [diff] [blame] | 100 | #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; }) |
Hugh Dickins | ac9b9c6 | 2005-10-20 16:24:28 +0100 | [diff] [blame] | 101 | #define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; }) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Zhang, Yanmin | 8f86059 | 2006-03-22 00:08:50 -0800 | [diff] [blame] | 103 | #define hugetlb_change_protection(vma, address, end, newprot) |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | #ifndef HPAGE_MASK |
Robin Holt | 51c6f66 | 2005-11-13 16:06:42 -0800 | [diff] [blame] | 106 | #define HPAGE_MASK PAGE_MASK /* Keep the compiler happy */ |
| 107 | #define HPAGE_SIZE PAGE_SIZE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | #endif |
| 109 | |
| 110 | #endif /* !CONFIG_HUGETLB_PAGE */ |
| 111 | |
| 112 | #ifdef CONFIG_HUGETLBFS |
| 113 | struct hugetlbfs_config { |
| 114 | uid_t uid; |
| 115 | gid_t gid; |
| 116 | umode_t mode; |
| 117 | long nr_blocks; |
| 118 | long nr_inodes; |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 119 | struct hstate *hstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | }; |
| 121 | |
| 122 | struct hugetlbfs_sb_info { |
| 123 | long max_blocks; /* blocks allowed */ |
| 124 | long free_blocks; /* blocks free */ |
| 125 | long max_inodes; /* inodes allowed */ |
| 126 | long free_inodes; /* inodes free */ |
| 127 | spinlock_t stat_lock; |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 128 | struct hstate *hstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | }; |
| 130 | |
| 131 | |
| 132 | struct hugetlbfs_inode_info { |
| 133 | struct shared_policy policy; |
| 134 | struct inode vfs_inode; |
| 135 | }; |
| 136 | |
| 137 | static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode) |
| 138 | { |
| 139 | return container_of(inode, struct hugetlbfs_inode_info, vfs_inode); |
| 140 | } |
| 141 | |
| 142 | static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb) |
| 143 | { |
| 144 | return sb->s_fs_info; |
| 145 | } |
| 146 | |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 147 | extern const struct file_operations hugetlbfs_file_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | extern struct vm_operations_struct hugetlb_vm_ops; |
Mel Gorman | 5a6fe12 | 2009-02-10 14:02:27 +0000 | [diff] [blame] | 149 | struct file *hugetlb_file_setup(const char *name, size_t, int); |
Adam Litke | 9a119c0 | 2007-11-14 16:59:41 -0800 | [diff] [blame] | 150 | int hugetlb_get_quota(struct address_space *mapping, long delta); |
| 151 | void hugetlb_put_quota(struct address_space *mapping, long delta); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | static inline int is_file_hugepages(struct file *file) |
| 154 | { |
Adam Litke | 516dffd | 2007-03-01 15:46:08 -0800 | [diff] [blame] | 155 | if (file->f_op == &hugetlbfs_file_operations) |
| 156 | return 1; |
| 157 | if (is_file_shm_hugepages(file)) |
| 158 | return 1; |
| 159 | |
| 160 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | static inline void set_file_hugepages(struct file *file) |
| 164 | { |
| 165 | file->f_op = &hugetlbfs_file_operations; |
| 166 | } |
| 167 | #else /* !CONFIG_HUGETLBFS */ |
| 168 | |
Stefan Richter | 1db8508 | 2009-02-10 23:27:32 +0100 | [diff] [blame] | 169 | #define is_file_hugepages(file) 0 |
| 170 | #define set_file_hugepages(file) BUG() |
| 171 | #define hugetlb_file_setup(name,size,acctflag) ERR_PTR(-ENOSYS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
| 173 | #endif /* !CONFIG_HUGETLBFS */ |
| 174 | |
Adrian Bunk | d2ba27e8 | 2007-05-06 14:49:00 -0700 | [diff] [blame] | 175 | #ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
| 176 | unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, |
| 177 | unsigned long len, unsigned long pgoff, |
| 178 | unsigned long flags); |
| 179 | #endif /* HAVE_ARCH_HUGETLB_UNMAPPED_AREA */ |
| 180 | |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 181 | #ifdef CONFIG_HUGETLB_PAGE |
| 182 | |
Nishanth Aravamudan | a343787 | 2008-07-23 21:27:44 -0700 | [diff] [blame] | 183 | #define HSTATE_NAME_LEN 32 |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 184 | /* Defines one hugetlb page size */ |
| 185 | struct hstate { |
| 186 | int hugetlb_next_nid; |
| 187 | unsigned int order; |
| 188 | unsigned long mask; |
| 189 | unsigned long max_huge_pages; |
| 190 | unsigned long nr_huge_pages; |
| 191 | unsigned long free_huge_pages; |
| 192 | unsigned long resv_huge_pages; |
| 193 | unsigned long surplus_huge_pages; |
| 194 | unsigned long nr_overcommit_huge_pages; |
| 195 | struct list_head hugepage_freelists[MAX_NUMNODES]; |
| 196 | unsigned int nr_huge_pages_node[MAX_NUMNODES]; |
| 197 | unsigned int free_huge_pages_node[MAX_NUMNODES]; |
| 198 | unsigned int surplus_huge_pages_node[MAX_NUMNODES]; |
Nishanth Aravamudan | a343787 | 2008-07-23 21:27:44 -0700 | [diff] [blame] | 199 | char name[HSTATE_NAME_LEN]; |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 200 | }; |
| 201 | |
Jon Tollefson | 53ba51d | 2008-07-23 21:27:52 -0700 | [diff] [blame] | 202 | struct huge_bootmem_page { |
| 203 | struct list_head list; |
| 204 | struct hstate *hstate; |
| 205 | }; |
| 206 | |
| 207 | /* arch callback */ |
| 208 | int __init alloc_bootmem_huge_page(struct hstate *h); |
| 209 | |
Andi Kleen | e5ff215 | 2008-07-23 21:27:42 -0700 | [diff] [blame] | 210 | void __init hugetlb_add_hstate(unsigned order); |
| 211 | struct hstate *size_to_hstate(unsigned long size); |
| 212 | |
| 213 | #ifndef HUGE_MAX_HSTATE |
| 214 | #define HUGE_MAX_HSTATE 1 |
| 215 | #endif |
| 216 | |
| 217 | extern struct hstate hstates[HUGE_MAX_HSTATE]; |
| 218 | extern unsigned int default_hstate_idx; |
| 219 | |
| 220 | #define default_hstate (hstates[default_hstate_idx]) |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 221 | |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 222 | static inline struct hstate *hstate_inode(struct inode *i) |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 223 | { |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 224 | struct hugetlbfs_sb_info *hsb; |
| 225 | hsb = HUGETLBFS_SB(i->i_sb); |
| 226 | return hsb->hstate; |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | static inline struct hstate *hstate_file(struct file *f) |
| 230 | { |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 231 | return hstate_inode(f->f_dentry->d_inode); |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 232 | } |
| 233 | |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 234 | static inline struct hstate *hstate_vma(struct vm_area_struct *vma) |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 235 | { |
Andi Kleen | a137e1c | 2008-07-23 21:27:43 -0700 | [diff] [blame] | 236 | return hstate_file(vma->vm_file); |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | static inline unsigned long huge_page_size(struct hstate *h) |
| 240 | { |
| 241 | return (unsigned long)PAGE_SIZE << h->order; |
| 242 | } |
| 243 | |
Mel Gorman | 08fba69 | 2009-01-06 14:38:53 -0800 | [diff] [blame] | 244 | extern unsigned long vma_kernel_pagesize(struct vm_area_struct *vma); |
| 245 | |
Mel Gorman | 3340289 | 2009-01-06 14:38:54 -0800 | [diff] [blame] | 246 | extern unsigned long vma_mmu_pagesize(struct vm_area_struct *vma); |
| 247 | |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 248 | static inline unsigned long huge_page_mask(struct hstate *h) |
| 249 | { |
| 250 | return h->mask; |
| 251 | } |
| 252 | |
| 253 | static inline unsigned int huge_page_order(struct hstate *h) |
| 254 | { |
| 255 | return h->order; |
| 256 | } |
| 257 | |
| 258 | static inline unsigned huge_page_shift(struct hstate *h) |
| 259 | { |
| 260 | return h->order + PAGE_SHIFT; |
| 261 | } |
| 262 | |
| 263 | static inline unsigned int pages_per_huge_page(struct hstate *h) |
| 264 | { |
| 265 | return 1 << h->order; |
| 266 | } |
| 267 | |
| 268 | static inline unsigned int blocks_per_huge_page(struct hstate *h) |
| 269 | { |
| 270 | return huge_page_size(h) / 512; |
| 271 | } |
| 272 | |
| 273 | #include <asm/hugetlb.h> |
| 274 | |
Andi Kleen | e5ff215 | 2008-07-23 21:27:42 -0700 | [diff] [blame] | 275 | static inline struct hstate *page_hstate(struct page *page) |
| 276 | { |
| 277 | return size_to_hstate(PAGE_SIZE << compound_order(page)); |
| 278 | } |
| 279 | |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 280 | #else |
| 281 | struct hstate {}; |
Jon Tollefson | 53ba51d | 2008-07-23 21:27:52 -0700 | [diff] [blame] | 282 | #define alloc_bootmem_huge_page(h) NULL |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 283 | #define hstate_file(f) NULL |
| 284 | #define hstate_vma(v) NULL |
| 285 | #define hstate_inode(i) NULL |
| 286 | #define huge_page_size(h) PAGE_SIZE |
| 287 | #define huge_page_mask(h) PAGE_MASK |
Mel Gorman | 08fba69 | 2009-01-06 14:38:53 -0800 | [diff] [blame] | 288 | #define vma_kernel_pagesize(v) PAGE_SIZE |
Mel Gorman | 3340289 | 2009-01-06 14:38:54 -0800 | [diff] [blame] | 289 | #define vma_mmu_pagesize(v) PAGE_SIZE |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 290 | #define huge_page_order(h) 0 |
| 291 | #define huge_page_shift(h) PAGE_SHIFT |
Andrea Righi | 510a35d | 2008-07-26 15:22:27 -0700 | [diff] [blame] | 292 | static inline unsigned int pages_per_huge_page(struct hstate *h) |
| 293 | { |
| 294 | return 1; |
| 295 | } |
Andi Kleen | a551643 | 2008-07-23 21:27:41 -0700 | [diff] [blame] | 296 | #endif |
| 297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | #endif /* _LINUX_HUGETLB_H */ |