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Re: pgsql: Prevent concurrent SimpleLruTruncate() for any given SLRU. - Mailing list pgsql-committers

From Tom Lane
Subject Re: pgsql: Prevent concurrent SimpleLruTruncate() for any given SLRU.
Date
Msg-id 921383.1597523945@sss.pgh.pa.us
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In response to pgsql: Prevent concurrent SimpleLruTruncate() for any given SLRU.  (Noah Misch <noah@leadboat.com>)
Responses Re: pgsql: Prevent concurrent SimpleLruTruncate() for any given SLRU.  (Noah Misch <noah@leadboat.com>)
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Noah Misch <noah@leadboat.com> writes:
> Prevent concurrent SimpleLruTruncate() for any given SLRU.

I find it fairly scary that you've changed enum LockTagType in the
back branches.  Are we quite certain that no extensions have compiled-in
values of that enum?

Safer from an ABI standpoint would be to add the new value at the end,
at least in the back branches.

            regards, tom lane

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