| Date | Sun, 23 Feb 2003 11:29:21 -0300 (BRT) | From | Rik van Riel <> | Subject | Re: Minutes from Feb 21 LSE Call |
| |
On Sat, 22 Feb 2003, Eric W. Biederman wrote:
> Note: rmap chains can be restricted to an arbitrary length, or an > arbitrary total count trivially. All you have to do is allow a fixed > limit on the number of people who can map a page simultaneously. > > The selection of which chain to unmap can be a bit tricky but is > relatively straight forward. Why doesn't someone who is seeing > this just hack this up?
I'm not sure how useful this feature would be. Also, there are a bunch of corner cases in which you cannot limit the number of processes mapping a page, think about eg. mlock, nonlinear vmas and anonymous memory.
All in all I suspect that the cost of such a feature might be higher than any benefits.
cheers,
Rik -- Engineers don't grow up, they grow sideways. http://www.surriel.com/ http://kernelnewbies.org/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|