btrfs: delayed-ref: Use btrfs_ref to refactor btrfs_add_delayed_tree_ref()
btrfs_add_delayed_tree_ref() has a longer and longer parameter list, and
some caller like btrfs_inc_extent_ref() are using @owner as level for
delayed tree ref.
Instead of making the parameter list longer and longer, use btrfs_ref to
refactor it, so each parameter assignment should be self-explaining
without dirty level/owner trick, and provides the basis for later refactor.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
3 files changed
