Try again to make the visibility map crash safe.
My previous attempt was quite a bit less than half-baked with respect to
heap_update().
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/e16954f3d27fa8e16c379ff6623ae18d6250a39c
Modified Files
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src/backend/access/heap/heapam.c | 45 ++++++++---------
src/backend/access/heap/hio.c | 97 ++++++++++++++++++++++++++++++-------
src/include/access/hio.h | 2 +-
3 files changed, 100 insertions(+), 44 deletions(-)