btrfs: Remove WARN_ON in walk_log_tree

The log_root passed to walk_log_tree is guaranteed to have its
root_key.objectid always be BTRFS_TREE_LOG_OBJECTID. This is by
merit that all log roots of an ordinary root are allocated in
alloc_log_tree which hard-codes objectid to be BTRFS_TREE_LOG_OBJECTID.

In case walk_log_tree is called for a log tree found by btrfs_read_fs_root
in btrfs_recover_log_trees, that function already ensures
found_key.objectid is BTRFS_TREE_LOG_OBJECTID.

No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 47f4c6eea8512967109051abc677072eafb46cf8..9a6b1303fcabcebed3b19f593e099ddcd9056245 100644 (file)
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2894,8 +2894,6 @@ static int walk_log_tree(struct btrfs_trans_handle *trans,
                                        clear_extent_buffer_dirty(next);
                        }
 
-                       WARN_ON(log->root_key.objectid !=
-                               BTRFS_TREE_LOG_OBJECTID);
                        ret = btrfs_pin_reserved_extent(fs_info, next->start,
                                                        next->len);
                        if (ret)