if (anon_vma)
return anon_vma;
try_prev:
- /*
- * It is potentially slow to have to call find_vma_prev here.
- * But it's only on the first write fault on the vma, not
- * every time, and we could devise a way to avoid it later
- * (e.g. stash info in next's anon_vma_node when assigning
- * an anon_vma, or when trying vma_merge). Another time.
- */
- BUG_ON(find_vma_prev(vma->vm_mm, vma->vm_start, &near) != vma);
+ near = vma->vm_prev;
if (!near)
goto none;
return -EINVAL;
/* Find the first overlapping VMA */
- vma = find_vma_prev(mm, start, &prev);
+ vma = find_vma(mm, start);
if (!vma)
return 0;
+ prev = vma->vm_prev;
/* we have start < vma->vm_end */
/* if it doesn't overlap, we have nothing.. */