Simon Riggs wrote:
On Fri, 2008-10-31 at 15:05 +0000, Heikki Linnakangas wrote:
Log Message:
-----------
Unite ReadBufferWithFork, ReadBufferWithStrategy, and ZeroOrReadBuffer
functions into one ReadBufferExtended function, that takes the strategy
and mode as argument. There's three modes, RBM_NORMAL which is the default
used by plain ReadBuffer(), RBM_ZERO, which replaces ZeroOrReadBuffer, and
a new mode RBM_ZERO_ON_ERROR, which allows callers to read corrupt pages
without throwing an error. The FSM needs the new mode to recover from
corrupt pages, which could happend if we crash after extending an FSM file,
and the new page is "torn".
I thought you were adding the "read buffer only if in cache" option
also?
No, but if it's needed, it should now fit well into the infrastructure,
as a new ReadBuffer mode.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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