Re: [PATCH 2/3] mm, slub: count freed pages via rcu as this task'sreclaimed_slab

[Christoph Lameter]

On Tue, 9 Apr 2013, Joonsoo Kim wrote:

> Currently, freed pages via rcu is not counted for reclaimed_slab, because
> it is freed in rcu context, not current task context. But, this free is
> initiated by this task, so counting this into this task's reclaimed_slab
> is meaningful to decide whether we continue reclaim, or not.
> So change code to count these pages for this task's reclaimed_slab.

slab->reclaim_state guides the reclaim actions in vmscan.c. With this
patch slab->reclaim_state could get quite a high value without new pages being
available for allocation. slab->reclaim_state will only be updated
when the RCU period ends.

--
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/