Re: [RFC] mempool_alloc() pre-allocated object usage

[Marcelo Tosatti]

Hi Paul,

On Mon, Oct 03, 2005 at 07:21:22PM +0300, Paul Mundt wrote:
> On Mon, Oct 03, 2005 at 04:49:13PM +0200, Arjan van de Ven wrote:
> > On Mon, 2005-10-03 at 17:36 +0300, Paul Mundt wrote:
> > > Both usage patterns seem valid from my point of view, would you be open
> > > to something that would accomodate both? (ie, possibly adding in a flag
> > > to determine pre-allocated object usage?) Or should I not be using
> > > mempool for contiguity purposes?
> > 
> > a similar dillema was in the highmem bounce code in 2.4; what worked
> > really well back then was to do it both; eg use half the pool for
> > "immediate" use, then try a VM alloc, and use the second half of the
> > pool for the really emergency cases.
> > 
> Unfortunately this won't work very well in our case since it's
> specifically high order allocations that we are after, and we don't have
> the extra RAM to allow for this.

Out of curiosity, what is the requirement for higher order pages?

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/