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-rw-r--r--mm/rmap.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 1a0ee6e..f06cee4 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -203,7 +203,7 @@ struct anon_vma *page_lock_anon_vma(struct page *page)
rcu_read_lock();
anon_mapping = (unsigned long) page->mapping;
- if (!(anon_mapping & PAGE_MAPPING_ANON))
+ if ((anon_mapping & PAGE_MAPPING_FLAGS) != PAGE_MAPPING_ANON)
goto out;
if (!page_mapped(page))
goto out;
@@ -248,8 +248,7 @@ vma_address(struct page *page, struct vm_area_struct *vma)
unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
{
if (PageAnon(page)) {
- if ((void *)vma->anon_vma !=
- (void *)page->mapping - PAGE_MAPPING_ANON)
+ if (vma->anon_vma != page_anon_vma(page))
return -EFAULT;
} else if (page->mapping && !(vma->vm_flags & VM_NONLINEAR)) {
if (!vma->vm_file ||
@@ -513,7 +512,7 @@ int page_referenced(struct page *page,
referenced++;
*vm_flags = 0;
- if (page_mapped(page) && page->mapping) {
+ if (page_mapped(page) && page_rmapping(page)) {
if (PageAnon(page))
referenced += page_referenced_anon(page, mem_cont,
vm_flags);