1 files changed, 3 insertions, 9 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index bbdc9af5e117..d49736ff8a8d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -906,14 +906,7 @@ struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma)
         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;
 
@@ -2044,9 +2037,10 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
                 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.. */