diff options
| -rw-r--r-- | fs/btrfs/ctree.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index f2ec1a9bae28..968faaec0e39 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -341,7 +341,6 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, struct rb_root *tm_root; struct rb_node *node; struct rb_node *next; - struct seq_list *cur_elem; struct tree_mod_elem *tm; u64 min_seq = (u64)-1; u64 seq_putting = elem->seq; @@ -353,18 +352,20 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, list_del(&elem->list); elem->seq = 0; - list_for_each_entry(cur_elem, &fs_info->tree_mod_seq_list, list) { - if (cur_elem->seq < min_seq) { - if (seq_putting > cur_elem->seq) { - /* - * blocker with lower sequence number exists, we - * cannot remove anything from the log - */ - write_unlock(&fs_info->tree_mod_log_lock); - return; - } - min_seq = cur_elem->seq; + if (!list_empty(&fs_info->tree_mod_seq_list)) { + struct seq_list *first; + + first = list_first_entry(&fs_info->tree_mod_seq_list, + struct seq_list, list); + if (seq_putting > first->seq) { + /* + * Blocker with lower sequence number exists, we + * cannot remove anything from the log. + */ + write_unlock(&fs_info->tree_mod_log_lock); + return; } + min_seq = first->seq; } /* |