On Wed, Dec 24, 2003 at 05:09:42AM -0800, William Lee Irwin III wrote:
> ptecache refresh. Includes the shrink_slab() and smp_local_irq_*
> suggestions as well as a fix for IPI recursion found while running
> hackbench on -wli, moving the "don't shrink lowmem slabs if gfp_mask
> wants highmem" logic into the shrinkers themselves, and converting
> shrink_pagetable_cache() to use on_each_cpu().
> How's this look?

This tries to adjust the reclaim logic so it returns status like other
shrinkers attached both incrementally and as a whole-hog replacement.

BTW
                delta = scanned * shrinker->seeks;
                delta *= (*shrinker->shrinker)(0, gfp_mask);
                do_div(delta, pages + 1);
                shrinker->nr += delta;
                if (shrinker->nr > SHRINK_BATCH) {
                        long nr_to_scan = shrinker->nr;

more aggressively reclaims slabs requiring _more_ seeks to refill.


-- wli