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| author | Hugh Dickins <hugh@veritas.com> | 2005-10-20 16:24:28 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-20 09:02:07 -0700 |
| commit | ac9b9c667c2e1194e22ebe0a441ae1c37aaa9b90 (patch) | |
| tree | 3903d87d0b56a49ead39c0460b5bc0b86b040775 /include | |
| parent | 93918e9afc76717176e9e114e79cdbb602a45ae8 (diff) | |
| download | talos-obmc-linux-ac9b9c667c2e1194e22ebe0a441ae1c37aaa9b90.tar.gz talos-obmc-linux-ac9b9c667c2e1194e22ebe0a441ae1c37aaa9b90.zip | |
[PATCH] Fix handling spurious page fault for hugetlb region
This reverts commit 3359b54c8c07338f3a863d1109b42eebccdcf379 and
replaces it with a cleaner version that is purely based on page table
operations, so that the synchronization between inode size and hugetlb
mappings becomes moot.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -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); unsigned long hugetlb_total_pages(void); struct page *alloc_huge_page(void); void free_huge_page(struct page *); +int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long address, int write_access); extern unsigned long max_huge_pages; extern const unsigned long hugetlb_zero, hugetlb_infinity; @@ -99,6 +101,7 @@ static inline unsigned long hugetlb_total_pages(void) do { } while (0) #define alloc_huge_page() ({ NULL; }) #define free_huge_page(p) ({ (void)(p); BUG(); }) +#define hugetlb_fault(mm, vma, addr, write) ({ BUG(); 0; }) #ifndef HPAGE_MASK #define HPAGE_MASK 0 /* Keep the compiler happy */ @@ -155,24 +158,11 @@ static inline void set_file_hugepages(struct file *file) { file->f_op = &hugetlbfs_file_operations; } - -static inline int valid_hugetlb_file_off(struct vm_area_struct *vma, - unsigned long address) -{ - struct inode *inode = vma->vm_file->f_dentry->d_inode; - loff_t file_off = address - vma->vm_start; - - file_off += (vma->vm_pgoff << PAGE_SHIFT); - - return (file_off < inode->i_size); -} - #else /* !CONFIG_HUGETLBFS */ #define is_file_hugepages(file) 0 #define set_file_hugepages(file) BUG() #define hugetlb_zero_setup(size) ERR_PTR(-ENOSYS) -#define valid_hugetlb_file_off(vma, address) 0 #endif /* !CONFIG_HUGETLBFS */ |
