btrfs: switch return_bigger to bool in find_ref_head

Using bool is more suitable than int here, and add the comment about the
return_bigger.

Signed-off-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Lu Fengqi 2018-10-11 13:40:38 +08:00 • committed by David Sterba
commit d9352794da