btrfs: Remove stale comment about select_delayed_ref

select_delayed_ref really just gets the next delayed ref which has to
be processed - either an add ref or drop ref. We never go back for
anything. So the comment is actually bogus, just remove it.

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/extent-tree.c b/fs/btrfs/extent-tree.c
index fa2ed14..47edb3a 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2705,10 +2705,6 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
                spin_lock(&locked_ref->lock);
                btrfs_merge_delayed_refs(trans, delayed_refs, locked_ref);
 
-               /*
-                * locked_ref is the head node, so we have to go one
-                * node back for any delayed ref updates
-                */
                ref = select_delayed_ref(locked_ref);
 
                if (ref && ref->seq &&