diff options
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 8990f909492..dc3be5f5b0d 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -183,7 +183,9 @@ static void page_unlock_anon_vma(struct anon_vma *anon_vma) } /* - * At what user virtual address is page expected in vma? + * At what user virtual address is page expected in @vma? + * Returns virtual address or -EFAULT if page's index/offset is not + * within the range mapped the @vma. */ static inline unsigned long vma_address(struct page *page, struct vm_area_struct *vma) @@ -193,8 +195,7 @@ vma_address(struct page *page, struct vm_area_struct *vma) address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); if (unlikely(address < vma->vm_start || address >= vma->vm_end)) { - /* page should be within any vma from prio_tree_next */ - BUG_ON(!PageAnon(page)); + /* page should be within @vma mapping range */ return -EFAULT; } return address; |