Bug#195018: dynamic mmap bug triage

[Goswin von Brederlow <goswin-v-b@web.de>]

Joey Hess <joeyh@debian.org> writes:

> Also, a thought:
>
> Since the bug seems to require not just a simple mremap but also support
> for relocating the pool, which I assume involves relocating pointers into
> the pool, maybe it's also time to consider some heuristic workarounds?

On each update record the size needed.
On the next update allocate a savely larger map.

If the map runs out of room give a warning, record size and
restart. If it fails more than N times abort with an error.

The size of the map is loosly related to the number of packages
available, right? So it should be possibly to guess a good upper
limit and detect runaway map size.

MfG
        Goswin