diff options
Diffstat (limited to 'include/linux/hugetlb.h')
| -rw-r--r-- | include/linux/hugetlb.h | 16 | 
1 files changed, 3 insertions, 13 deletions
| diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 42cb7d70f9ac..d664330d900e 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h | |||
| @@ -25,6 +25,8 @@ int is_hugepage_mem_enough(size_t); | |||
| 25 | unsigned long hugetlb_total_pages(void); | 25 | unsigned long hugetlb_total_pages(void); | 
| 26 | struct page *alloc_huge_page(void); | 26 | struct page *alloc_huge_page(void); | 
| 27 | void free_huge_page(struct page *); | 27 | void free_huge_page(struct page *); | 
| 28 | int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, | ||
| 29 | unsigned long address, int write_access); | ||
| 28 | 30 | ||
| 29 | extern unsigned long max_huge_pages; | 31 | extern unsigned long max_huge_pages; | 
| 30 | extern const unsigned long hugetlb_zero, hugetlb_infinity; | 32 | extern const unsigned long hugetlb_zero, hugetlb_infinity; | 
| @@ -99,6 +101,7 @@ static inline unsigned long hugetlb_total_pages(void) | |||
| 99 | do { } while (0) | 101 | do { } while (0) | 
| 100 | #define alloc_huge_page() ({ NULL; }) | 102 | #define alloc_huge_page() ({ NULL; }) | 
| 101 | #define free_huge_page(p) ({ (void)(p); BUG(); }) | 103 | #define free_huge_page(p) ({ (void)(p); BUG(); }) | 
| 104 | #define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; }) | ||
| 102 | 105 | ||
| 103 | #ifndef HPAGE_MASK | 106 | #ifndef HPAGE_MASK | 
| 104 | #define HPAGE_MASK 0 /* Keep the compiler happy */ | 107 | #define HPAGE_MASK 0 /* Keep the compiler happy */ | 
| @@ -155,24 +158,11 @@ static inline void set_file_hugepages(struct file *file) | |||
| 155 | { | 158 | { | 
| 156 | file->f_op = &hugetlbfs_file_operations; | 159 | file->f_op = &hugetlbfs_file_operations; | 
| 157 | } | 160 | } | 
| 158 | |||
| 159 | static inline int valid_hugetlb_file_off(struct vm_area_struct *vma, | ||
| 160 | unsigned long address) | ||
| 161 | { | ||
| 162 | struct inode *inode = vma->vm_file->f_dentry->d_inode; | ||
| 163 | loff_t file_off = address - vma->vm_start; | ||
| 164 | |||
| 165 | file_off += (vma->vm_pgoff << PAGE_SHIFT); | ||
| 166 | |||
| 167 | return (file_off < inode->i_size); | ||
| 168 | } | ||
| 169 | |||
| 170 | #else /* !CONFIG_HUGETLBFS */ | 161 | #else /* !CONFIG_HUGETLBFS */ | 
| 171 | 162 | ||
| 172 | #define is_file_hugepages(file) 0 | 163 | #define is_file_hugepages(file) 0 | 
| 173 | #define set_file_hugepages(file) BUG() | 164 | #define set_file_hugepages(file) BUG() | 
| 174 | #define hugetlb_zero_setup(size) ERR_PTR(-ENOSYS) | 165 | #define hugetlb_zero_setup(size) ERR_PTR(-ENOSYS) | 
| 175 | #define valid_hugetlb_file_off(vma, address) 0 | ||
| 176 | 166 | ||
| 177 | #endif /* !CONFIG_HUGETLBFS */ | 167 | #endif /* !CONFIG_HUGETLBFS */ | 
| 178 | 168 | ||
