Correctly align page's images in generic wal API
Page image should be MAXALIGN'ed because existing code could directly align
pointers in page instead of align offset from beginning of page.
Found during play with indexes as extenstion, Alexander Korotkov and me
Branch
--
master
Details
postgres_fdw: Fix the fix for crash when pushing down multiple joins.
Commit 3151f16e1874db82ed85a005dac15368903ca9fb was intended to be
a commit of a patch from Ashutosh Bapat, but instead I mistakenly
committed an earlier version from Michael Paquier (because both
patches were submitted with the
Fix multiple problems in postgres_fdw query cancellation logic.
First, even if we cancel a query, we still have to roll back the
containing transaction; otherwise, the session will be left in a
failed transaction state.
Second, we need to support canceling queries whe aborting a
subtransaction as
