On Thu, May 10, 2007 at 12:00:08PM -0700, Christoph Lameter wrote:
> As far as I can tell there is only a single slab destructor left (there
> is currently another in i386 but its going to go as soon as Andi merges
> i386s support for quicklists).
>
> I wonder how difficult it would be to remove it? If we have no need for
> destructors anymore then maybe we could remove destructor support from the
> slab allocators? There is no point in checking for destructor uses in
> the slab allocators if there are none.
>
> Or are there valid reason to keep them around? It seems they were mainly
> used for list management which required them to take a spinlock. Taking a
> spinlock in a destructor is a bit risky since the slab allocators may run
> the destructors anytime they decide a slab is no longer needed.
>
> Or do we want to continue support destructors? If so why?
>
[snip pmb stuff]
I'll take a look at tidying up the PMB slab, getting rid of the dtor
shouldn't be terribly painful. I simply opted to do the list management
there since others were doing it for the PGD slab cache at the time that
was written.
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