Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_HUGETLB_H |
2 | #define _LINUX_HUGETLB_H | |
3 | ||
be93d8cf | 4 | #include <linux/mm_types.h> |
309381fe | 5 | #include <linux/mmdebug.h> |
4e950f6f | 6 | #include <linux/fs.h> |
8edf344c | 7 | #include <linux/hugetlb_inline.h> |
abb8206c | 8 | #include <linux/cgroup.h> |
9119a41e JK |
9 | #include <linux/list.h> |
10 | #include <linux/kref.h> | |
4e950f6f | 11 | |
e9ea0e2d AM |
12 | struct ctl_table; |
13 | struct user_struct; | |
24669e58 | 14 | struct mmu_gather; |
e9ea0e2d | 15 | |
1da177e4 LT |
16 | #ifdef CONFIG_HUGETLB_PAGE |
17 | ||
18 | #include <linux/mempolicy.h> | |
516dffdc | 19 | #include <linux/shm.h> |
63551ae0 | 20 | #include <asm/tlbflush.h> |
1da177e4 | 21 | |
90481622 DG |
22 | struct hugepage_subpool { |
23 | spinlock_t lock; | |
24 | long count; | |
25 | long max_hpages, used_hpages; | |
26 | }; | |
27 | ||
9119a41e JK |
28 | struct resv_map { |
29 | struct kref refs; | |
7b24d861 | 30 | spinlock_t lock; |
9119a41e JK |
31 | struct list_head regions; |
32 | }; | |
33 | extern struct resv_map *resv_map_alloc(void); | |
34 | void resv_map_release(struct kref *ref); | |
35 | ||
c3f38a38 AK |
36 | extern spinlock_t hugetlb_lock; |
37 | extern int hugetlb_max_hstate __read_mostly; | |
38 | #define for_each_hstate(h) \ | |
39 | for ((h) = hstates; (h) < &hstates[hugetlb_max_hstate]; (h)++) | |
40 | ||
90481622 DG |
41 | struct hugepage_subpool *hugepage_new_subpool(long nr_blocks); |
42 | void hugepage_put_subpool(struct hugepage_subpool *spool); | |
43 | ||
20a0307c WF |
44 | int PageHuge(struct page *page); |
45 | ||
a1e78772 | 46 | void reset_vma_resv_huge_pages(struct vm_area_struct *vma); |
8d65af78 AD |
47 | int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); |
48 | int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); | |
49 | int hugetlb_treat_movable_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); | |
06808b08 LS |
50 | |
51 | #ifdef CONFIG_NUMA | |
52 | int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, | |
53 | void __user *, size_t *, loff_t *); | |
54 | #endif | |
55 | ||
1da177e4 | 56 | int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *); |
28a35716 ML |
57 | long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, |
58 | struct page **, struct vm_area_struct **, | |
59 | unsigned long *, unsigned long *, long, unsigned int); | |
04f2cbe3 | 60 | void unmap_hugepage_range(struct vm_area_struct *, |
24669e58 | 61 | unsigned long, unsigned long, struct page *); |
d833352a MG |
62 | void __unmap_hugepage_range_final(struct mmu_gather *tlb, |
63 | struct vm_area_struct *vma, | |
64 | unsigned long start, unsigned long end, | |
65 | struct page *ref_page); | |
24669e58 AK |
66 | void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma, |
67 | unsigned long start, unsigned long end, | |
68 | struct page *ref_page); | |
e1759c21 | 69 | void hugetlb_report_meminfo(struct seq_file *); |
1da177e4 | 70 | int hugetlb_report_node_meminfo(int, char *); |
949f7ec5 | 71 | void hugetlb_show_meminfo(void); |
1da177e4 | 72 | unsigned long hugetlb_total_pages(void); |
ac9b9c66 | 73 | int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, |
788c7df4 | 74 | unsigned long address, unsigned int flags); |
a1e78772 | 75 | int hugetlb_reserve_pages(struct inode *inode, long from, long to, |
5a6fe125 | 76 | struct vm_area_struct *vma, |
ca16d140 | 77 | vm_flags_t vm_flags); |
a43a8c39 | 78 | void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed); |
6de2b1aa | 79 | int dequeue_hwpoisoned_huge_page(struct page *page); |
31caf665 NH |
80 | bool isolate_huge_page(struct page *page, struct list_head *list); |
81 | void putback_active_hugepage(struct page *page); | |
c8721bbb | 82 | bool is_hugepage_active(struct page *page); |
8f1d26d0 | 83 | void free_huge_page(struct page *page); |
1da177e4 | 84 | |
3212b535 SC |
85 | #ifdef CONFIG_ARCH_WANT_HUGE_PMD_SHARE |
86 | pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud); | |
87 | #endif | |
88 | ||
396faf03 | 89 | extern unsigned long hugepages_treat_as_movable; |
1da177e4 | 90 | extern int sysctl_hugetlb_shm_group; |
53ba51d2 | 91 | extern struct list_head huge_boot_pages; |
1da177e4 | 92 | |
63551ae0 DG |
93 | /* arch callbacks */ |
94 | ||
a5516438 AK |
95 | pte_t *huge_pte_alloc(struct mm_struct *mm, |
96 | unsigned long addr, unsigned long sz); | |
63551ae0 | 97 | pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr); |
39dde65c | 98 | int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep); |
63551ae0 DG |
99 | struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, |
100 | int write); | |
101 | struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, | |
102 | pmd_t *pmd, int write); | |
ceb86879 AK |
103 | struct page *follow_huge_pud(struct mm_struct *mm, unsigned long address, |
104 | pud_t *pud, int write); | |
63551ae0 | 105 | int pmd_huge(pmd_t pmd); |
ceb86879 | 106 | int pud_huge(pud_t pmd); |
7da4d641 | 107 | unsigned long hugetlb_change_protection(struct vm_area_struct *vma, |
8f860591 | 108 | unsigned long address, unsigned long end, pgprot_t newprot); |
63551ae0 | 109 | |
1da177e4 LT |
110 | #else /* !CONFIG_HUGETLB_PAGE */ |
111 | ||
20a0307c WF |
112 | static inline int PageHuge(struct page *page) |
113 | { | |
114 | return 0; | |
115 | } | |
116 | ||
a1e78772 MG |
117 | static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma) |
118 | { | |
119 | } | |
120 | ||
1da177e4 LT |
121 | static inline unsigned long hugetlb_total_pages(void) |
122 | { | |
123 | return 0; | |
124 | } | |
125 | ||
5b23dbe8 | 126 | #define follow_hugetlb_page(m,v,p,vs,a,b,i,w) ({ BUG(); 0; }) |
1da177e4 LT |
127 | #define follow_huge_addr(mm, addr, write) ERR_PTR(-EINVAL) |
128 | #define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; }) | |
e1759c21 AD |
129 | static inline void hugetlb_report_meminfo(struct seq_file *m) |
130 | { | |
131 | } | |
1da177e4 | 132 | #define hugetlb_report_node_meminfo(n, buf) 0 |
949f7ec5 DR |
133 | static inline void hugetlb_show_meminfo(void) |
134 | { | |
135 | } | |
1da177e4 | 136 | #define follow_huge_pmd(mm, addr, pmd, write) NULL |
ceb86879 | 137 | #define follow_huge_pud(mm, addr, pud, write) NULL |
a5516438 | 138 | #define prepare_hugepage_range(file, addr, len) (-EINVAL) |
1da177e4 | 139 | #define pmd_huge(x) 0 |
ceb86879 | 140 | #define pud_huge(x) 0 |
1da177e4 | 141 | #define is_hugepage_only_range(mm, addr, len) 0 |
9da61aef | 142 | #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; }) |
788c7df4 | 143 | #define hugetlb_fault(mm, vma, addr, flags) ({ BUG(); 0; }) |
0fe6e20b | 144 | #define huge_pte_offset(mm, address) 0 |
24669e58 AK |
145 | static inline int dequeue_hwpoisoned_huge_page(struct page *page) |
146 | { | |
147 | return 0; | |
148 | } | |
149 | ||
f40386a4 NH |
150 | static inline bool isolate_huge_page(struct page *page, struct list_head *list) |
151 | { | |
152 | return false; | |
153 | } | |
31caf665 | 154 | #define putback_active_hugepage(p) do {} while (0) |
c8721bbb | 155 | #define is_hugepage_active(x) false |
1da177e4 | 156 | |
7da4d641 PZ |
157 | static inline unsigned long hugetlb_change_protection(struct vm_area_struct *vma, |
158 | unsigned long address, unsigned long end, pgprot_t newprot) | |
159 | { | |
160 | return 0; | |
161 | } | |
8f860591 | 162 | |
d833352a MG |
163 | static inline void __unmap_hugepage_range_final(struct mmu_gather *tlb, |
164 | struct vm_area_struct *vma, unsigned long start, | |
165 | unsigned long end, struct page *ref_page) | |
166 | { | |
167 | BUG(); | |
168 | } | |
169 | ||
24669e58 AK |
170 | static inline void __unmap_hugepage_range(struct mmu_gather *tlb, |
171 | struct vm_area_struct *vma, unsigned long start, | |
172 | unsigned long end, struct page *ref_page) | |
173 | { | |
174 | BUG(); | |
175 | } | |
176 | ||
1da177e4 LT |
177 | #endif /* !CONFIG_HUGETLB_PAGE */ |
178 | ||
4e52780d EM |
179 | #define HUGETLB_ANON_FILE "anon_hugepage" |
180 | ||
6bfde05b EM |
181 | enum { |
182 | /* | |
183 | * The file will be used as an shm file so shmfs accounting rules | |
184 | * apply | |
185 | */ | |
186 | HUGETLB_SHMFS_INODE = 1, | |
4e52780d EM |
187 | /* |
188 | * The file is being created on the internal vfs mount and shmfs | |
189 | * accounting rules do not apply | |
190 | */ | |
191 | HUGETLB_ANONHUGE_INODE = 2, | |
6bfde05b EM |
192 | }; |
193 | ||
1da177e4 | 194 | #ifdef CONFIG_HUGETLBFS |
1da177e4 | 195 | struct hugetlbfs_sb_info { |
1da177e4 LT |
196 | long max_inodes; /* inodes allowed */ |
197 | long free_inodes; /* inodes free */ | |
198 | spinlock_t stat_lock; | |
a137e1cc | 199 | struct hstate *hstate; |
90481622 | 200 | struct hugepage_subpool *spool; |
1da177e4 LT |
201 | }; |
202 | ||
1da177e4 LT |
203 | static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb) |
204 | { | |
205 | return sb->s_fs_info; | |
206 | } | |
207 | ||
4b6f5d20 | 208 | extern const struct file_operations hugetlbfs_file_operations; |
f0f37e2f | 209 | extern const struct vm_operations_struct hugetlb_vm_ops; |
af73e4d9 | 210 | struct file *hugetlb_file_setup(const char *name, size_t size, vm_flags_t acct, |
42d7395f AK |
211 | struct user_struct **user, int creat_flags, |
212 | int page_size_log); | |
1da177e4 LT |
213 | |
214 | static inline int is_file_hugepages(struct file *file) | |
215 | { | |
516dffdc AL |
216 | if (file->f_op == &hugetlbfs_file_operations) |
217 | return 1; | |
218 | if (is_file_shm_hugepages(file)) | |
219 | return 1; | |
220 | ||
221 | return 0; | |
1da177e4 LT |
222 | } |
223 | ||
42d7395f | 224 | |
1da177e4 LT |
225 | #else /* !CONFIG_HUGETLBFS */ |
226 | ||
1db8508c | 227 | #define is_file_hugepages(file) 0 |
40716e29 | 228 | static inline struct file * |
af73e4d9 NH |
229 | hugetlb_file_setup(const char *name, size_t size, vm_flags_t acctflag, |
230 | struct user_struct **user, int creat_flags, | |
42d7395f | 231 | int page_size_log) |
e9ea0e2d AM |
232 | { |
233 | return ERR_PTR(-ENOSYS); | |
234 | } | |
1da177e4 LT |
235 | |
236 | #endif /* !CONFIG_HUGETLBFS */ | |
237 | ||
d2ba27e8 AB |
238 | #ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
239 | unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | |
240 | unsigned long len, unsigned long pgoff, | |
241 | unsigned long flags); | |
242 | #endif /* HAVE_ARCH_HUGETLB_UNMAPPED_AREA */ | |
243 | ||
a5516438 AK |
244 | #ifdef CONFIG_HUGETLB_PAGE |
245 | ||
a3437870 | 246 | #define HSTATE_NAME_LEN 32 |
a5516438 AK |
247 | /* Defines one hugetlb page size */ |
248 | struct hstate { | |
e8c5c824 LS |
249 | int next_nid_to_alloc; |
250 | int next_nid_to_free; | |
a5516438 AK |
251 | unsigned int order; |
252 | unsigned long mask; | |
253 | unsigned long max_huge_pages; | |
254 | unsigned long nr_huge_pages; | |
255 | unsigned long free_huge_pages; | |
256 | unsigned long resv_huge_pages; | |
257 | unsigned long surplus_huge_pages; | |
258 | unsigned long nr_overcommit_huge_pages; | |
0edaecfa | 259 | struct list_head hugepage_activelist; |
a5516438 AK |
260 | struct list_head hugepage_freelists[MAX_NUMNODES]; |
261 | unsigned int nr_huge_pages_node[MAX_NUMNODES]; | |
262 | unsigned int free_huge_pages_node[MAX_NUMNODES]; | |
263 | unsigned int surplus_huge_pages_node[MAX_NUMNODES]; | |
abb8206c AK |
264 | #ifdef CONFIG_CGROUP_HUGETLB |
265 | /* cgroup control files */ | |
266 | struct cftype cgroup_files[5]; | |
267 | #endif | |
a3437870 | 268 | char name[HSTATE_NAME_LEN]; |
a5516438 AK |
269 | }; |
270 | ||
53ba51d2 JT |
271 | struct huge_bootmem_page { |
272 | struct list_head list; | |
273 | struct hstate *hstate; | |
ee8f248d BB |
274 | #ifdef CONFIG_HIGHMEM |
275 | phys_addr_t phys; | |
276 | #endif | |
53ba51d2 JT |
277 | }; |
278 | ||
bf50bab2 | 279 | struct page *alloc_huge_page_node(struct hstate *h, int nid); |
74060e4d NH |
280 | struct page *alloc_huge_page_noerr(struct vm_area_struct *vma, |
281 | unsigned long addr, int avoid_reserve); | |
bf50bab2 | 282 | |
53ba51d2 JT |
283 | /* arch callback */ |
284 | int __init alloc_bootmem_huge_page(struct hstate *h); | |
285 | ||
e5ff2159 AK |
286 | void __init hugetlb_add_hstate(unsigned order); |
287 | struct hstate *size_to_hstate(unsigned long size); | |
288 | ||
289 | #ifndef HUGE_MAX_HSTATE | |
290 | #define HUGE_MAX_HSTATE 1 | |
291 | #endif | |
292 | ||
293 | extern struct hstate hstates[HUGE_MAX_HSTATE]; | |
294 | extern unsigned int default_hstate_idx; | |
295 | ||
296 | #define default_hstate (hstates[default_hstate_idx]) | |
a5516438 | 297 | |
a137e1cc | 298 | static inline struct hstate *hstate_inode(struct inode *i) |
a5516438 | 299 | { |
a137e1cc AK |
300 | struct hugetlbfs_sb_info *hsb; |
301 | hsb = HUGETLBFS_SB(i->i_sb); | |
302 | return hsb->hstate; | |
a5516438 AK |
303 | } |
304 | ||
305 | static inline struct hstate *hstate_file(struct file *f) | |
306 | { | |
496ad9aa | 307 | return hstate_inode(file_inode(f)); |
a5516438 AK |
308 | } |
309 | ||
af73e4d9 NH |
310 | static inline struct hstate *hstate_sizelog(int page_size_log) |
311 | { | |
312 | if (!page_size_log) | |
313 | return &default_hstate; | |
314 | return size_to_hstate(1 << page_size_log); | |
315 | } | |
316 | ||
a137e1cc | 317 | static inline struct hstate *hstate_vma(struct vm_area_struct *vma) |
a5516438 | 318 | { |
a137e1cc | 319 | return hstate_file(vma->vm_file); |
a5516438 AK |
320 | } |
321 | ||
322 | static inline unsigned long huge_page_size(struct hstate *h) | |
323 | { | |
324 | return (unsigned long)PAGE_SIZE << h->order; | |
325 | } | |
326 | ||
08fba699 MG |
327 | extern unsigned long vma_kernel_pagesize(struct vm_area_struct *vma); |
328 | ||
3340289d MG |
329 | extern unsigned long vma_mmu_pagesize(struct vm_area_struct *vma); |
330 | ||
a5516438 AK |
331 | static inline unsigned long huge_page_mask(struct hstate *h) |
332 | { | |
333 | return h->mask; | |
334 | } | |
335 | ||
336 | static inline unsigned int huge_page_order(struct hstate *h) | |
337 | { | |
338 | return h->order; | |
339 | } | |
340 | ||
341 | static inline unsigned huge_page_shift(struct hstate *h) | |
342 | { | |
343 | return h->order + PAGE_SHIFT; | |
344 | } | |
345 | ||
bae7f4ae LC |
346 | static inline bool hstate_is_gigantic(struct hstate *h) |
347 | { | |
348 | return huge_page_order(h) >= MAX_ORDER; | |
349 | } | |
350 | ||
a5516438 AK |
351 | static inline unsigned int pages_per_huge_page(struct hstate *h) |
352 | { | |
353 | return 1 << h->order; | |
354 | } | |
355 | ||
356 | static inline unsigned int blocks_per_huge_page(struct hstate *h) | |
357 | { | |
358 | return huge_page_size(h) / 512; | |
359 | } | |
360 | ||
361 | #include <asm/hugetlb.h> | |
362 | ||
d9ed9faa CM |
363 | #ifndef arch_make_huge_pte |
364 | static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, | |
365 | struct page *page, int writable) | |
366 | { | |
367 | return entry; | |
368 | } | |
369 | #endif | |
370 | ||
e5ff2159 AK |
371 | static inline struct hstate *page_hstate(struct page *page) |
372 | { | |
309381fe | 373 | VM_BUG_ON_PAGE(!PageHuge(page), page); |
e5ff2159 AK |
374 | return size_to_hstate(PAGE_SIZE << compound_order(page)); |
375 | } | |
376 | ||
aa50d3a7 AK |
377 | static inline unsigned hstate_index_to_shift(unsigned index) |
378 | { | |
379 | return hstates[index].order + PAGE_SHIFT; | |
380 | } | |
381 | ||
972dc4de AK |
382 | static inline int hstate_index(struct hstate *h) |
383 | { | |
384 | return h - hstates; | |
385 | } | |
386 | ||
13d60f4b ZY |
387 | pgoff_t __basepage_index(struct page *page); |
388 | ||
389 | /* Return page->index in PAGE_SIZE units */ | |
390 | static inline pgoff_t basepage_index(struct page *page) | |
391 | { | |
392 | if (!PageCompound(page)) | |
393 | return page->index; | |
394 | ||
395 | return __basepage_index(page); | |
396 | } | |
397 | ||
c8721bbb NH |
398 | extern void dissolve_free_huge_pages(unsigned long start_pfn, |
399 | unsigned long end_pfn); | |
100873d7 | 400 | static inline int hugepage_migration_supported(struct hstate *h) |
83467efb | 401 | { |
c177c81e NH |
402 | #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION |
403 | return huge_page_shift(h) == PMD_SHIFT; | |
404 | #else | |
405 | return 0; | |
406 | #endif | |
83467efb | 407 | } |
c8721bbb | 408 | |
cb900f41 KS |
409 | static inline spinlock_t *huge_pte_lockptr(struct hstate *h, |
410 | struct mm_struct *mm, pte_t *pte) | |
411 | { | |
412 | if (huge_page_size(h) == PMD_SIZE) | |
413 | return pmd_lockptr(mm, (pmd_t *) pte); | |
414 | VM_BUG_ON(huge_page_size(h) == PAGE_SIZE); | |
415 | return &mm->page_table_lock; | |
416 | } | |
417 | ||
457c1b27 NA |
418 | static inline bool hugepages_supported(void) |
419 | { | |
420 | /* | |
421 | * Some platform decide whether they support huge pages at boot | |
422 | * time. On these, such as powerpc, HPAGE_SHIFT is set to 0 when | |
423 | * there is no such support | |
424 | */ | |
425 | return HPAGE_SHIFT != 0; | |
426 | } | |
427 | ||
af73e4d9 | 428 | #else /* CONFIG_HUGETLB_PAGE */ |
a5516438 | 429 | struct hstate {}; |
bf50bab2 | 430 | #define alloc_huge_page_node(h, nid) NULL |
74060e4d | 431 | #define alloc_huge_page_noerr(v, a, r) NULL |
53ba51d2 | 432 | #define alloc_bootmem_huge_page(h) NULL |
a5516438 | 433 | #define hstate_file(f) NULL |
af73e4d9 | 434 | #define hstate_sizelog(s) NULL |
a5516438 AK |
435 | #define hstate_vma(v) NULL |
436 | #define hstate_inode(i) NULL | |
cb900f41 | 437 | #define page_hstate(page) NULL |
a5516438 AK |
438 | #define huge_page_size(h) PAGE_SIZE |
439 | #define huge_page_mask(h) PAGE_MASK | |
08fba699 | 440 | #define vma_kernel_pagesize(v) PAGE_SIZE |
3340289d | 441 | #define vma_mmu_pagesize(v) PAGE_SIZE |
a5516438 AK |
442 | #define huge_page_order(h) 0 |
443 | #define huge_page_shift(h) PAGE_SHIFT | |
510a35d4 AR |
444 | static inline unsigned int pages_per_huge_page(struct hstate *h) |
445 | { | |
446 | return 1; | |
447 | } | |
aa50d3a7 | 448 | #define hstate_index_to_shift(index) 0 |
972dc4de | 449 | #define hstate_index(h) 0 |
13d60f4b ZY |
450 | |
451 | static inline pgoff_t basepage_index(struct page *page) | |
452 | { | |
453 | return page->index; | |
454 | } | |
c8721bbb | 455 | #define dissolve_free_huge_pages(s, e) do {} while (0) |
100873d7 | 456 | #define hugepage_migration_supported(h) 0 |
cb900f41 KS |
457 | |
458 | static inline spinlock_t *huge_pte_lockptr(struct hstate *h, | |
459 | struct mm_struct *mm, pte_t *pte) | |
460 | { | |
461 | return &mm->page_table_lock; | |
462 | } | |
af73e4d9 | 463 | #endif /* CONFIG_HUGETLB_PAGE */ |
a5516438 | 464 | |
cb900f41 KS |
465 | static inline spinlock_t *huge_pte_lock(struct hstate *h, |
466 | struct mm_struct *mm, pte_t *pte) | |
467 | { | |
468 | spinlock_t *ptl; | |
469 | ||
470 | ptl = huge_pte_lockptr(h, mm, pte); | |
471 | spin_lock(ptl); | |
472 | return ptl; | |
473 | } | |
474 | ||
1da177e4 | 475 | #endif /* _LINUX_HUGETLB_H */ |