Re: Maybe a VM bug in 2.4.18-18 from RH 8.0?

[Andrew Morton]

Andrea Arcangeli wrote:
> 
> ...
> He may still suffer other known problems besides
> the above two critical highmem fixes (for example if
> lower_zone_reserve_ratio is not applied and there's no other fix around
> it IMHO, that's generic OS problem not only for linux, and that was my
> only sensible solution to fix it, the approch in mainline is way too
> weak to make a real difference)

argh.  I hate that one ;)  Giving away 100 megabytes of memory
hurts.

I've never been able to find the workload which makes this
necessary.  Can you please describe an "exploit" against 
2.4.20 which demonstrates the need for this?

Thanks.