Re: Buffer locking is special (hints, checksums, AIO writes) - Mailing list pgsql-hackers

Hi,

On 2025-11-24 16:04:41 -0500, Melanie Plageman wrote:
> On Mon, Nov 24, 2025 at 3:58 PM Andres Freund <andres@anarazel.de> wrote:
> > On 2025-11-19 21:47:49 -0500, Andres Freund wrote:
> > > 0001: A straight-up bugfix in lwlock.c - albeit for a bug that seems currently
> > >       effectively harmless.
> >
> > Does anybody have opinions about whether to backpatch this fix? Given that it
> > has no real consequences I'm mildly inclined not to, but maybe there are cases
> > where the additional wait list lock cycle matters?
> 
> Since it is a mistake, I am mildly in favor of backporting to avoid
> confusion for future developers. It's pretty weird that LWLockWakeup()
> has to be called again to actually unset LW_FLAG_HAS_WAITERS. But
> since it's not really harmful, this is a very mild opinion.

Thanks for chiming in, done.

Greetings,

Andres Freund