Now that the structure formerly known as BlkTransactionState has been
renamed to something sensible (BlkActionState), re-introduce an actual
BlkTransactionState that actually manages state for the entire Transaction.
In the process, convert the old QSIMPLEQ list of actions into a QTAILQ,
to let us more efficiently delete items in arbitrary order, which will
be more important in the future when some actions will expire at the end
of the transaction, but others may persist until all callbacks triggered
by the transaction are recollected.
Signed-off-by: John Snow <address@hidden>
---
blockdev.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 56 insertions(+), 7 deletions(-)