Partially roll back overenthusiastic SSI optimization.
When a regular lock is held, SSI can use that in lieu of a predicate lock
to detect rw conflicts; but if the regular lock is being taken by a
subtransaction, we can't assume that it'll commit, so releasing the
parent transaction's lock in that case is a no-no.
Kevin Grittner
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/fbc0d07796bcae8b2ee4b09ed236877338c95130
Modified Files
--------------
src/backend/storage/lmgr/predicate.c | 20 +++++++++++++-------
1 files changed, 13 insertions(+), 7 deletions(-)
