Re: Reduce the size of PageFreeSpaceInfo on 64bit platform

ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp> writes:
> -    Size        avail;            /* space available on this page */
> +    uint32        avail;            /* space available on this page */

This declaration ties into a boatload of others, eg, just about every
use of Size in freespace.h.  I'm unconvinced that we need to change it,
but if we do, the patch needs to be a lot bigger.

            regards, tom lane