pgsql: Reuse all-zero pages in GIN.

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От Heikki Linnakangas
Тема pgsql: Reuse all-zero pages in GIN.
Дата
Msg-id E1ZJk7X-0001dH-C2@gemulon.postgresql.org
обсуждение исходный текст
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Reuse all-zero pages in GIN.

In GIN, an all-zeros page would be leaked forever, and never reused. Just
add them to the FSM in vacuum, and they will be reinitialized when grabbed
from the FSM. On master and 9.5, attempting to access the page's opaque
struct also caused an assertion failure, although that was otherwise
harmless.

Reported by Jeff Janes. Backpatch to all supported versions.

Branch
------
master

Details
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http://git.postgresql.org/pg/commitdiff/334445179c82ba304480ecbd00ae4237587e4baf

Modified Files
--------------
src/backend/access/gin/ginvacuum.c |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)


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От: Heikki Linnakangas
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Сообщение: pgsql: Fix handling of all-zero pages in SP-GiST vacuum.
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От: Heikki Linnakangas
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Сообщение: pgsql: Avoid calling PageGetSpecialPointer() on an all-zeros page.