mm: fix anon_vma->degree underflow in anon_vma endless growing prevention

[linux-2.6-block.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index da9990acc08b2d8014e342771a52650b47ee05fc..9ec50a368634a8d9a0824504d479b03798bdc402 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -774,10 +774,8 @@ again:                     remove_next = 1 + (end > next->vm_end);
 
                        importer->anon_vma = exporter->anon_vma;
                        error = anon_vma_clone(importer, exporter);
-                       if (error) {
-                               importer->anon_vma = NULL;
+                       if (error)
                                return error;
-                       }
                }
        }