tree 45e1d42c376b168ae55460e2d481f915d6cc8b78
parent 19ae4e8133f370d820c4cdd61a4b703235664a5f
author Jan Schmidt <list.btrfs@jan-o-sch.net> 1337521433 +0200
committer Jan Schmidt <list.btrfs@jan-o-sch.net> 1338383856 +0200

Btrfs: tree mod log sanity checks in join_transaction

When a fresh transaction begins, the tree mod log must be clean. Users of
the tree modification log must ensure they never span across transaction
boundaries.

We reset the sequence to 0 in this safe situation to make absolutely sure
overflow can't happen.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>