While I had the chance, I compared the rbtre code in btrfs-progs to that of
the latest kernel. No new bug fixes need importing, however rbtree.h and
rbtree_augmented.h get documentation updates
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
