Re: [PATCH v6 6/7] mm/memcg: kill mem_cgroup_lru_del()

Michal Hocko
2012-03-26T15:23:17Z

On Fri 23-03-12 01:56:39, Konstantin Khlebnikov wrote:
> This patch kills mem_cgroup_lru_del(), we can use mem_cgroup_lru_del_list()
> instead. On 0-order isolation we already have right lru list id.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Hugh Dickins <hughd@google.com>

Yes, looks good
Acked-by: Michal Hocko <mhocko@suse.cz>

Just a small nit..
[...]
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 5f6ed98..9de66be 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
[...]
> @@ -1205,8 +1205,11 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
>
> if (__isolate_lru_page(cursor_page, mode) == 0) {
> unsigned int isolated_pages;
> + enum lru_list cursor_lru;
>
> - mem_cgroup_lru_del(cursor_page);
> + cursor_lru = page_lru(cursor_page);
> + mem_cgroup_lru_del_list(cursor_page,
> + cursor_lru);

Why not mem_cgroup_lru_del_list(cursor_page,
page_lru(cursor_page));
The patch would be smaller and it doesn't make checkpatch unhappy as well.

> list_move(&cursor_page->lru, dst);
> isolated_pages = hpage_nr_pages(cursor_page);
> nr_taken += isolated_pages;
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/

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