pgaio_io_get_id() type (was Re: Datum as struct)

On 31.07.25 19:17, Tom Lane wrote:
> Also I see a "// XXX" in pg_get_aios, which I guess is a note
> to confirm the data type to use for ioh_id?

Yes, the stuff returned from pgaio_io_get_id() should be int, but some 
code uses uint32, and also UINT32_MAX as a special marker.  Here is a 
patch that tries to straighten that out by using int consistently and -1 
as a special marker.