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Date: Mon, 14 May 2012 17:49:30 +0200
From: Michal Hocko <mhocko@...e.cz>
To: Hugh Dickins <hughd@...gle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Konstantin Khlebnikov <khlebnikov@...nvz.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mm/memcg: get_lru_size not get_lruvec_size
On Sun 13-05-12 22:00:07, Hugh Dickins wrote:
> Konstantin just introduced mem_cgroup_get_lruvec_size() and
> get_lruvec_size(), I'm about to add mem_cgroup_update_lru_size():
> but we're dealing with the same thing, lru_size[lru]. We ought to
> agree on the naming, and I do think lru_size is the more correct:
> so rename his ones to get_lru_size().
>
> Signed-off-by: Hugh Dickins <hughd@...gle.com>
I like this.
Acked-by: Michal Hocko <mhocko@...e.cz>
> ---
> But I'd prefer this patch to vanish and you just edit Konstantin's.
>
> include/linux/memcontrol.h | 4 ++--
> mm/memcontrol.c | 10 +++++-----
> mm/vmscan.c | 19 +++++++++----------
> 3 files changed, 16 insertions(+), 17 deletions(-)
>
> --- 3046N.orig/include/linux/memcontrol.h 2012-05-13 20:41:20.506117289 -0700
> +++ 3046N/include/linux/memcontrol.h 2012-05-13 20:41:24.330117381 -0700
> @@ -121,7 +121,7 @@ void mem_cgroup_iter_break(struct mem_cg
> int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec);
> int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec);
> int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
> -unsigned long mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list);
> +unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list);
> struct zone_reclaim_stat*
> mem_cgroup_get_reclaim_stat_from_page(struct page *page);
> extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
> @@ -340,7 +340,7 @@ mem_cgroup_inactive_file_is_low(struct l
> }
>
> static inline unsigned long
> -mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
> +mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
> {
> return 0;
> }
> --- 3046N.orig/mm/memcontrol.c 2012-05-13 20:41:20.510117289 -0700
> +++ 3046N/mm/memcontrol.c 2012-05-13 20:41:24.334117380 -0700
> @@ -742,7 +742,7 @@ static void mem_cgroup_charge_statistics
> }
>
> unsigned long
> -mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
> +mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
> {
> struct mem_cgroup_per_zone *mz;
>
> @@ -1234,8 +1234,8 @@ int mem_cgroup_inactive_anon_is_low(stru
> unsigned long active;
> unsigned long gb;
>
> - inactive = mem_cgroup_get_lruvec_size(lruvec, LRU_INACTIVE_ANON);
> - active = mem_cgroup_get_lruvec_size(lruvec, LRU_ACTIVE_ANON);
> + inactive = mem_cgroup_get_lru_size(lruvec, LRU_INACTIVE_ANON);
> + active = mem_cgroup_get_lru_size(lruvec, LRU_ACTIVE_ANON);
>
> gb = (inactive + active) >> (30 - PAGE_SHIFT);
> if (gb)
> @@ -1251,8 +1251,8 @@ int mem_cgroup_inactive_file_is_low(stru
> unsigned long active;
> unsigned long inactive;
>
> - inactive = mem_cgroup_get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
> - active = mem_cgroup_get_lruvec_size(lruvec, LRU_ACTIVE_FILE);
> + inactive = mem_cgroup_get_lru_size(lruvec, LRU_INACTIVE_FILE);
> + active = mem_cgroup_get_lru_size(lruvec, LRU_ACTIVE_FILE);
>
> return (active > inactive);
> }
> --- 3046N.orig/mm/vmscan.c 2012-05-13 20:41:20.510117289 -0700
> +++ 3046N/mm/vmscan.c 2012-05-13 20:41:24.334117380 -0700
> @@ -145,10 +145,10 @@ static bool global_reclaim(struct scan_c
> }
> #endif
>
> -static unsigned long get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
> +static unsigned long get_lru_size(struct lruvec *lruvec, enum lru_list lru)
> {
> if (!mem_cgroup_disabled())
> - return mem_cgroup_get_lruvec_size(lruvec, lru);
> + return mem_cgroup_get_lru_size(lruvec, lru);
>
> return zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru);
> }
> @@ -1608,10 +1608,10 @@ static void get_scan_count(struct lruvec
> goto out;
> }
>
> - anon = get_lruvec_size(lruvec, LRU_ACTIVE_ANON) +
> - get_lruvec_size(lruvec, LRU_INACTIVE_ANON);
> - file = get_lruvec_size(lruvec, LRU_ACTIVE_FILE) +
> - get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
> + anon = get_lru_size(lruvec, LRU_ACTIVE_ANON) +
> + get_lru_size(lruvec, LRU_INACTIVE_ANON);
> + file = get_lru_size(lruvec, LRU_ACTIVE_FILE) +
> + get_lru_size(lruvec, LRU_INACTIVE_FILE);
>
> if (global_reclaim(sc)) {
> free = zone_page_state(zone, NR_FREE_PAGES);
> @@ -1674,7 +1674,7 @@ out:
> int file = is_file_lru(lru);
> unsigned long scan;
>
> - scan = get_lruvec_size(lruvec, lru);
> + scan = get_lru_size(lruvec, lru);
> if (sc->priority || noswap) {
> scan >>= sc->priority;
> if (!scan && force_scan)
> @@ -1743,10 +1743,9 @@ static inline bool should_continue_recla
> * inactive lists are large enough, continue reclaiming
> */
> pages_for_compaction = (2UL << sc->order);
> - inactive_lru_pages = get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
> + inactive_lru_pages = get_lru_size(lruvec, LRU_INACTIVE_FILE);
> if (nr_swap_pages > 0)
> - inactive_lru_pages += get_lruvec_size(lruvec,
> - LRU_INACTIVE_ANON);
> + inactive_lru_pages += get_lru_size(lruvec, LRU_INACTIVE_ANON);
> if (sc->nr_reclaimed < pages_for_compaction &&
> inactive_lru_pages > pages_for_compaction)
> return true;
>
> --
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--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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