On Wed, Jun 1, 2022 at 2:57 AM Robert Haas <robertmh...@gmail.com> wrote:
> We do use fpm_segment_base(), but that accidentally fails > to break, because instead of using relptr_access() it drills right > through the abstraction and doesn't have any kind of special case for > 0. So we can fix this by: > > 1. Using a relative pointer value other than 0 to represent a null > pointer. Andres suggested (Size) -1. > 2. Not storing the free page manager for the DSM in the main shared > memory segment at byte offset 0. Hi all, For this open item, the above two ideas were discussed as a short-term fix, and my reading of the thread is that the other proposals are too invasive at this point in the cycle. Both of them have a draft patch in the thread. #2, i.e. wasting MAXALIGN of space, seems the simplest and most localized. Any thoughts on pulling the trigger on either of these two approaches? -- John Naylor EDB: http://www.enterprisedb.com
