Btrfs: check return value of btrfs_inc_extent_ref()

If return value of btrfs_inc_extent_ref() is not 0, BUG() is called.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 46b7b57650ab..c2d887566400 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -589,6 +589,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
                                                 ins.objectid, ins.offset,
                                                 0, root->root_key.objectid,
                                                 key->objectid, offset);
+                                BUG_ON(ret);
                         } else {
                                 /*
                                  * insert the extent pointer in the extent