btrfs: rename and export read_node_slot

Preparatory work for code that will be moved out of ctree and uses this
function.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-08-21 19:16:27 +02:00
commit 4b231ae474
2 changed files with 14 additions and 11 deletions