btrfs: breakout empty head cleanup to a helper

Move this code out to a helper function to further simplivy
__btrfs_run_delayed_refs.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2017-09-29 15:43:54 -04:00 • committed by David Sterba
commit 194ab0bc21