diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index adeac306610..1cc6bfbd872 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -118,6 +118,8 @@ __setup("norandmaps", disable_randmaps); unsigned long zero_pfn __read_mostly; unsigned long highest_memmap_pfn __read_mostly; +EXPORT_SYMBOL(zero_pfn); + /* * CONFIG_MMU architectures set up ZERO_PAGE in their paging_init() */ @@ -1125,7 +1127,7 @@ again: addr) != page->index) { pte_t ptfile = pgoff_to_pte(page->index); if (pte_soft_dirty(ptent)) - pte_file_mksoft_dirty(ptfile); + ptfile = pte_file_mksoft_dirty(ptfile); set_pte_at(mm, addr, pte, ptfile); } if (PageAnon(page)) @@ -2051,7 +2053,8 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma, old_page = vm_normal_page(vma, address, orig_pte); if (!old_page) { /* - * VM_MIXEDMAP !pfn_valid() case + * VM_MIXEDMAP !pfn_valid() case, or VM_SOFTDIRTY clear on a + * VM_PFNMAP VMA. * * We should not cow pages in a shared writeable mapping. * Just mark the pages writable as we can't do any dirty |