[PATCH 1/2] Btrfs: remove some BUG_ONs() when walking backref tree

[Wang Shilong]

From: Wang Shilong <wangsl-f...@cn.fujitsu.com>

The only error return value of __add_prelim_ref() is -ENOMEM,
just return errors rather than trigger BUG_ON().

Signed-off-by: Wang Shilong <wangsl-f...@cn.fujitsu.com>
---
 fs/btrfs/backref.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index bd605c8..dc200f6 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -582,7 +582,8 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head 
*head, u64 seq,
                default:
                        WARN_ON(1);
                }
-               BUG_ON(ret);
+               if (ret)
+                       return ret;
        }
 
        return 0;
@@ -680,7 +681,8 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info,
                default:
                        WARN_ON(1);
                }
-               BUG_ON(ret);
+               if (ret)
+                       return ret;
                ptr += btrfs_extent_inline_ref_size(type);
        }
 
@@ -762,7 +764,9 @@ static int __add_keyed_refs(struct btrfs_fs_info *fs_info,
                default:
                        WARN_ON(1);
                }
-               BUG_ON(ret);
+               if (ret)
+                       return ret;
+
        }
 
        return ret;
-- 
1.7.7.6

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html