Re: SimpleLruTruncate() mutual exclusion - Mailing list pgsql-hackers

From Dmitry Dolgov
Subject Re: SimpleLruTruncate() mutual exclusion
Date
Msg-id 20200130153433.6gvgm723lzpgiogh@localhost
Whole thread Raw
In response to Re: SimpleLruTruncate() mutual exclusion  (Noah Misch <noah@leadboat.com>)
Responses Re: SimpleLruTruncate() mutual exclusion  (Noah Misch <noah@leadboat.com>)
List pgsql-hackers
> On Sun, Nov 17, 2019 at 10:14:26PM -0800, Noah Misch wrote:
>
> > I'm probably missing something, so just wanted to clarify. Do I
> > understand correctly, that thread [1] and this one are independent, and
> > it is assumed in the scenario above that we're at the end of XID space,
> > but not necessarily having rounding issues? I'm a bit confused, since
> > the reproduce script does something about cutoffPage, and I'm not sure
> > if it's important or not.
>
> I think the repro recipe contained an early fix for the other thread's bug.
> While they're independent in principle, I likely never reproduced this bug
> without having a fix in place for the other thread's bug.  The bug in the
> other thread was easier to hit.

Just to clarify, since the CF item for this patch was withdrawn
recently. Does it mean that eventually the thread [1] covers this one
too?

[1]: https://www.postgresql.org/message-id/flat/20190202083822.GC32531%40gust.leadboat.com



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