aboutsummaryrefslogtreecommitdiffstats
path: root/mm/rmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index f5d6799b8a74..2f855babfd06 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -364,9 +364,10 @@ 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))
- ;
- else if (page->mapping && !(vma->vm_flags & VM_NONLINEAR)) {
+ if (PageAnon(page)) {
+ if (vma->anon_vma->root != page_anon_vma(page)->root)
+ return -EFAULT;
+ } else if (page->mapping && !(vma->vm_flags & VM_NONLINEAR)) {
if (!vma->vm_file ||
vma->vm_file->f_mapping != page->mapping)
return -EFAULT;

Privacy Policy