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Re: [Patch] Optimize dropping of relation buffers using dlist - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [Patch] Optimize dropping of relation buffers using dlist
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In response to Re: [Patch] Optimize dropping of relation buffers using dlist  (Amit Kapila <[email protected]>)
Responses Re: [Patch] Optimize dropping of relation buffers using dlist
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Amit Kapila <[email protected]> writes:
> Even if the relation is locked, background processes like checkpointer
> can still touch the relation which might cause problems. Consider a
> case where we extend the relation but didn't flush the newly added
> pages. Now during truncate operation, checkpointer can still flush
> those pages which can cause trouble for truncate. But, I think in the
> recovery path such cases won't cause a problem.

I wouldn't count on that staying true ...

https://www.postgresql.org/message-id/CA+hUKGJ8NRsqgkZEnsnRc2MFROBV-jCnacbYvtpptK2A9YYp9Q@mail.gmail.com

            regards, tom lane

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