On Wed, May 02, 2007 at 12:42:54PM -0700, Christoph Lameter wrote:
> On Wed, 2 May 2007, Andrew Morton wrote:
>
> > > At some point I dream that SLUB could become the default but I thought
> > > this would take at least 6 month or so. If want to force this now then I
> > > will certainly have some busy weeks ahead.
> >
> > s/dream/promise/ ;)
> >
> > Six months sounds reasonable - I was kind of hoping for less. Make it
> > default-to-on in 2.6.23-rc1, see how it goes.
>
> Here is how I think the future could develop
>
> Cycle SLAB SLUB SLOB SLxB
>
> 2.6.22 API fixes Stabilization API fixes
>
> Major event: SLUB availability as experimental
>
> 2.6.23 API upgrades Perf. Valid. EOL
>
> Major events: SLUB performance validation. Switch off
> experimental (could even be the default)
> Slab allocators support targeted reclaim for at
> least one slab cache (dentry?)
> (vacate/move all objects in a slab)
To facilitate this do NOT introduce CONFIG_SLAB until we decide
that SLUB are default. In this way we can make CONFIG_SLUB be default
and people will not continue with CONFIG_SLAB because they had it in their
.config already.
Or just rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATED or something.
The point is make sure that LSUB becomes default for people that does
an make oldconfig (explicit or implicit).
Sam
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