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Message-Id: <20081204171605.1D7D.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date: Thu, 4 Dec 2008 17:17:43 +0900 (JST)
From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To: LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Balbir Singh <balbir@...ux.vnet.ibm.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: kosaki.motohiro@...fujitsu.com
Subject: [mmotm][PATCH] memcg: memcg reclaim stat trivial fixes
applied after: memcg-add-zone_reclaim_stat.patch
Andrew, if you like folded patch instead incremental patch,
please let me know it.
==
This patch has three trivial fixes.
- rename mem_cgroup_get_reclaim_stat_by_page to mem_cgroup_get_reclaim_stat_from_page
- repair silly forgotten "return" in get_reclaim_stat()
- make update_zone_reclaim_stat() helper function for cleanup
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC: Balbir Singh <balbir@...ux.vnet.ibm.com>
---
include/linux/memcontrol.h | 4 +--
mm/memcontrol.c | 3 +-
mm/swap.c | 48 +++++++++++++++++++++++----------------------
mm/vmscan.c | 2 -
4 files changed, 30 insertions(+), 27 deletions(-)
Index: b/include/linux/memcontrol.h
===================================================================
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -108,7 +108,7 @@ unsigned long mem_cgroup_zone_nr_pages(s
struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat(struct mem_cgroup *memcg,
struct zone *zone);
struct zone_reclaim_stat*
-mem_cgroup_get_reclaim_stat_by_page(struct page *page);
+mem_cgroup_get_reclaim_stat_from_page(struct page *page);
#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
extern int do_swap_account;
@@ -282,7 +282,7 @@ mem_cgroup_get_reclaim_stat(struct mem_c
}
static inline struct zone_reclaim_stat*
-mem_cgroup_get_reclaim_stat_by_page(struct page *page)
+mem_cgroup_get_reclaim_stat_from_page(struct page *page)
{
return NULL;
}
Index: b/mm/memcontrol.c
===================================================================
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -470,7 +470,8 @@ struct zone_reclaim_stat *mem_cgroup_get
return &mz->reclaim_stat;
}
-struct zone_reclaim_stat *mem_cgroup_get_reclaim_stat_by_page(struct page *page)
+struct zone_reclaim_stat *
+mem_cgroup_get_reclaim_stat_from_page(struct page *page)
{
struct page_cgroup *pc = lookup_page_cgroup(page);
struct mem_cgroup_per_zone *mz = page_cgroup_zoneinfo(pc);
Index: b/mm/swap.c
===================================================================
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -151,14 +151,32 @@ void rotate_reclaimable_page(struct pag
}
}
+static void update_page_reclaim_stat(struct zone *zone, struct page *page,
+ int file, int rotated)
+{
+ struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
+ struct zone_reclaim_stat *memcg_reclaim_stat;
+
+ memcg_reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page);
+
+ reclaim_stat->recent_scanned[file]++;
+ if (rotated)
+ reclaim_stat->recent_rotated[file]++;
+
+ if (!memcg_reclaim_stat)
+ return;
+
+ memcg_reclaim_stat->recent_scanned[file]++;
+ if (rotated)
+ memcg_reclaim_stat->recent_rotated[file]++;
+}
+
/*
* FIXME: speed this up?
*/
void activate_page(struct page *page)
{
struct zone *zone = page_zone(page);
- struct zone_reclaim_stat *reclaim_stat = &zone->reclaim_stat;
- struct zone_reclaim_stat *memcg_reclaim_stat;
spin_lock_irq(&zone->lru_lock);
if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
@@ -171,14 +189,7 @@ void activate_page(struct page *page)
add_page_to_lru_list(zone, page, lru);
__count_vm_event(PGACTIVATE);
- reclaim_stat->recent_rotated[!!file]++;
- reclaim_stat->recent_scanned[!!file]++;
-
- memcg_reclaim_stat = mem_cgroup_get_reclaim_stat_by_page(page);
- if (memcg_reclaim_stat) {
- memcg_reclaim_stat->recent_rotated[!!file]++;
- memcg_reclaim_stat->recent_scanned[!!file]++;
- }
+ update_page_reclaim_stat(zone, page, !!file, 1);
}
spin_unlock_irq(&zone->lru_lock);
}
@@ -406,8 +417,6 @@ void ____pagevec_lru_add(struct pagevec
{
int i;
struct zone *zone = NULL;
- struct zone_reclaim_stat *reclaim_stat = NULL;
- struct zone_reclaim_stat *memcg_reclaim_stat = NULL;
VM_BUG_ON(is_unevictable_lru(lru));
@@ -415,30 +424,23 @@ void ____pagevec_lru_add(struct pagevec
struct page *page = pvec->pages[i];
struct zone *pagezone = page_zone(page);
int file;
+ int active;
if (pagezone != zone) {
if (zone)
spin_unlock_irq(&zone->lru_lock);
zone = pagezone;
- reclaim_stat = &zone->reclaim_stat;
- memcg_reclaim_stat =
- mem_cgroup_get_reclaim_stat_by_page(page);
spin_lock_irq(&zone->lru_lock);
}
VM_BUG_ON(PageActive(page));
VM_BUG_ON(PageUnevictable(page));
VM_BUG_ON(PageLRU(page));
SetPageLRU(page);
+ active = is_active_lru(lru);
file = is_file_lru(lru);
- reclaim_stat->recent_scanned[file]++;
- if (memcg_reclaim_stat)
- memcg_reclaim_stat->recent_scanned[file]++;
- if (is_active_lru(lru)) {
+ if (active)
SetPageActive(page);
- reclaim_stat->recent_rotated[file]++;
- if (memcg_reclaim_stat)
- memcg_reclaim_stat->recent_rotated[file]++;
- }
+ update_page_reclaim_stat(zone, page, file, active);
add_page_to_lru_list(zone, page, lru);
}
if (zone)
Index: b/mm/vmscan.c
===================================================================
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -135,7 +135,7 @@ static struct zone_reclaim_stat *get_rec
struct scan_control *sc)
{
if (!scan_global_lru(sc))
- mem_cgroup_get_reclaim_stat(sc->mem_cgroup, zone);
+ return mem_cgroup_get_reclaim_stat(sc->mem_cgroup, zone);
return &zone->reclaim_stat;
}
--
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