Fix two bugs in setting the vm bit of empty pages.
Use a critical section when setting the all-visible flag on an empty page,
and WAL-logging it. log_newpage_buffer() contains an assertion that it
must be called inside a critical section, and it's the right thing to do
when modifying a buffer anyway.
Also, the page should be marked dirty before calling log_newpage_buffer(),
per the comment in log_newpage_buffer() and src/backend/access/transam/README.
Patch by Andres Freund, in response to my report. Backpatch to 9.2, like
the patch that introduced these bugs (a6370fd9).
Branch
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REL9_2_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/4da24f12e63313b7dbb6b3e3d0317e04045df636
Modified Files
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src/backend/commands/vacuumlazy.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)