Re: [PATCH] 2.4.20-rmap15a

From: Andrew Morton (akpm@digeo.com)
Date: Mon Dec 02 2002 - 03:51:56 EST


Jens Axboe wrote:
>
> On Sun, Dec 01 2002, Rik van Riel wrote:
> > > So, here my patch proposal. Ontop of 2.4.20-rmap15a.
> >
> > Looks good, now lets test it. If the patch is as needed as you
> > say we should push it to marcelo ;)
>
> Yes lets for heavens sake not fix the problem, merge the hack.

If it fails to find a merge or insert the current 2.4 elevator
will stick a read at the far end of the request queue. That's
quite arbitrary, and is the worst possible thing to do with it.

read-latency2 will put the read a tunable distance from the head.
Add a few embellishments to avoid permanent writer starvation,
and that's basically all it does.

So rather than just keeping on calling it a "hack" could you please
describe what is actually wrong with the idea?
-
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/



This archive was generated by hypermail 2b29 : Sat Dec 07 2002 - 22:00:12 EST