Bruce Momjian <> writes:
> Well, then what real options do we have?  It seems the patch is just
> required for all branches.

I think it would be possible to fix it in a less invasive way by taking
and releasing the ControlLock an extra time in SimpleLruReadPage and
SimpleLruWritePage.  What's indeterminate about that is the performance
cost.  In situations where there's not a lot of SLRU I/O traffic it's
presumably negligible, but in a case like Jim's where there's evidently
a *whole* lot of traffic, it might be a killer.

                        regards, tom lane

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