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Date: Tue, 28 Feb 2012 09:20:49 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To: Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc: Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
linux-mm@...ck.org, Johannes Weiner <hannes@...xchg.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH v3 05/21] mm: rename lruvec->lists into
lruvec->pages_lru
On Thu, 23 Feb 2012 17:52:00 +0400
Konstantin Khlebnikov <khlebnikov@...nvz.org> wrote:
> This is much more unique and grep-friendly name.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
I worries this kind of change can cause many hunks and make merging difficult..
But this seems not very destructive..
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
I have no strong opinions to this naming. How other mm developpers think ?
I personally think making this kind of changes in the head of patch set tend do
make it difficult to merge full sets of patche series.
Thanks,
-Kame
> ---
> include/linux/mm_inline.h | 2 +-
> include/linux/mmzone.h | 2 +-
> mm/memcontrol.c | 6 +++---
> mm/page_alloc.c | 2 +-
> mm/swap.c | 4 ++--
> mm/vmscan.c | 6 +++---
> 6 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
> index 227fd3e..8415596 100644
> --- a/include/linux/mm_inline.h
> +++ b/include/linux/mm_inline.h
> @@ -27,7 +27,7 @@ add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list lru)
> struct lruvec *lruvec;
>
> lruvec = mem_cgroup_lru_add_list(zone, page, lru);
> - list_add(&page->lru, &lruvec->lists[lru]);
> + list_add(&page->lru, &lruvec->pages_lru[lru]);
> __mod_zone_page_state(zone, NR_LRU_BASE + lru, hpage_nr_pages(page));
> }
>
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 3e1f7ff..ddd0fd2 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -160,7 +160,7 @@ static inline int is_unevictable_lru(enum lru_list lru)
> }
>
> struct lruvec {
> - struct list_head lists[NR_LRU_LISTS];
> + struct list_head pages_lru[NR_LRU_LISTS];
> };
>
> /* Mask used at gathering information at once (see memcontrol.c) */
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 77f5d48..8f8c7c4 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -1050,7 +1050,7 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
> * the lruvec for the given @zone and the memcg @page is charged to.
> *
> * The callsite is then responsible for physically linking the page to
> - * the returned lruvec->lists[@lru].
> + * the returned lruvec->pages_lru[@lru].
> */
> struct lruvec *mem_cgroup_lru_add_list(struct zone *zone, struct page *page,
> enum lru_list lru)
> @@ -3592,7 +3592,7 @@ static int mem_cgroup_force_empty_list(struct mem_cgroup *memcg,
>
> zone = &NODE_DATA(node)->node_zones[zid];
> mz = mem_cgroup_zoneinfo(memcg, node, zid);
> - list = &mz->lruvec.lists[lru];
> + list = &mz->lruvec.pages_lru[lru];
>
> loop = mz->lru_size[lru];
> /* give some margin against EBUSY etc...*/
> @@ -4716,7 +4716,7 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *memcg, int node)
> for (zone = 0; zone < MAX_NR_ZONES; zone++) {
> mz = &pn->zoneinfo[zone];
> for_each_lru(lru)
> - INIT_LIST_HEAD(&mz->lruvec.lists[lru]);
> + INIT_LIST_HEAD(&mz->lruvec.pages_lru[lru]);
> mz->usage_in_excess = 0;
> mz->on_tree = false;
> mz->memcg = memcg;
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 38f6744..5f19392 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4363,7 +4363,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
>
> zone_pcp_init(zone);
> for_each_lru(lru)
> - INIT_LIST_HEAD(&zone->lruvec.lists[lru]);
> + INIT_LIST_HEAD(&zone->lruvec.pages_lru[lru]);
> zone->reclaim_stat.recent_rotated[0] = 0;
> zone->reclaim_stat.recent_rotated[1] = 0;
> zone->reclaim_stat.recent_scanned[0] = 0;
> diff --git a/mm/swap.c b/mm/swap.c
> index fff1ff7..17993c0 100644
> --- a/mm/swap.c
> +++ b/mm/swap.c
> @@ -238,7 +238,7 @@ static void pagevec_move_tail_fn(struct page *page, void *arg)
>
> lruvec = mem_cgroup_lru_move_lists(page_zone(page),
> page, lru, lru);
> - list_move_tail(&page->lru, &lruvec->lists[lru]);
> + list_move_tail(&page->lru, &lruvec->pages_lru[lru]);
> (*pgmoved)++;
> }
> }
> @@ -482,7 +482,7 @@ static void lru_deactivate_fn(struct page *page, void *arg)
> * We moves tha page into tail of inactive.
> */
> lruvec = mem_cgroup_lru_move_lists(zone, page, lru, lru);
> - list_move_tail(&page->lru, &lruvec->lists[lru]);
> + list_move_tail(&page->lru, &lruvec->pages_lru[lru]);
> __count_vm_event(PGROTATED);
> }
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 8b59cb5..e41ad52 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -1164,7 +1164,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
> lru += LRU_ACTIVE;
> if (file)
> lru += LRU_FILE;
> - src = &lruvec->lists[lru];
> + src = &lruvec->pages_lru[lru];
>
> for (scan = 0; scan < nr_to_scan && !list_empty(src); scan++) {
> struct page *page;
> @@ -1663,7 +1663,7 @@ static void move_active_pages_to_lru(struct zone *zone,
> SetPageLRU(page);
>
> lruvec = mem_cgroup_lru_add_list(zone, page, lru);
> - list_move(&page->lru, &lruvec->lists[lru]);
> + list_move(&page->lru, &lruvec->pages_lru[lru]);
> pgmoved += hpage_nr_pages(page);
>
> if (put_page_testzero(page)) {
> @@ -3592,7 +3592,7 @@ void check_move_unevictable_pages(struct page **pages, int nr_pages)
> __dec_zone_state(zone, NR_UNEVICTABLE);
> lruvec = mem_cgroup_lru_move_lists(zone, page,
> LRU_UNEVICTABLE, lru);
> - list_move(&page->lru, &lruvec->lists[lru]);
> + list_move(&page->lru, &lruvec->pages_lru[lru]);
> __inc_zone_state(zone, NR_INACTIVE_ANON + lru);
> pgrescued++;
> }
>
> --
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