Re: [patch 7/8] vmscan: memcg-aware unevictable page rescue scanner

[Michal Hocko]

On Wed 01-06-11 08:25:18, Johannes Weiner wrote:
> Once the per-memcg lru lists are exclusive, the unevictable page
> rescue scanner can no longer work on the global zone lru lists.
> 
> This converts it to go through all memcgs and scan their respective
> unevictable lists instead.
> 
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Just a minor naming thing.

Other than that looks good to me.
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>

> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
[...]
> +struct page *mem_cgroup_lru_to_page(struct zone *zone, struct mem_cgroup *mem,
> +				    enum lru_list lru)
> +{
> +	struct mem_cgroup_per_zone *mz;
> +	struct page_cgroup *pc;
> +
> +	mz = mem_cgroup_zoneinfo(mem, zone_to_nid(zone), zone_idx(zone));
> +	pc = list_entry(mz->lists[lru].prev, struct page_cgroup, lru);
> +	return lookup_cgroup_page(pc);
> +}
> +
[...]
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -3233,6 +3233,14 @@ void scan_mapping_unevictable_pages(struct address_space *mapping)
>  
>  }
>  
> +static struct page *lru_tailpage(struct zone *zone, struct mem_cgroup *mem,
> +				 enum lru_list lru)
> +{
> +	if (mem)
> +		return mem_cgroup_lru_to_page(zone, mem, lru);
> +	return lru_to_page(&zone->lru[lru].list);
> +}

Wouldn't it better to have those names consistent?
mem_cgroup_lru_tailpage vs lru_tailpage?

[...]
-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
--
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/