From: Konstantin Khlebnikov <khlebnikov@openvz.org>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Cc: Hugh Dickins <hughd@google.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: [PATCH v2 21/22] mm: free lruvec in memcgroup via rcu
Date: Mon, 20 Feb 2012 21:23:54 +0400 [thread overview]
Message-ID: <20120220172354.22196.56006.stgit@zurg> (raw)
In-Reply-To: <20120220171138.22196.65847.stgit@zurg>
This is required for splitting lru_lock into per-lruvec pieces.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
---
mm/memcontrol.c | 20 +++++++++++++++-----
1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 69763da..eb024c1 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -148,6 +148,7 @@ struct mem_cgroup_per_zone {
struct mem_cgroup_per_node {
struct mem_cgroup_per_zone zoneinfo[MAX_NR_ZONES];
+ struct rcu_head rcu_head;
};
struct mem_cgroup_lru_info {
@@ -4657,18 +4658,27 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *memcg, int node)
return 0;
}
+static void free_pn_rcu(struct rcu_head *rcu_head)
+{
+ struct mem_cgroup_per_node *pn;
+ int zone;
+
+ pn = container_of(rcu_head, struct mem_cgroup_per_node, rcu_head);
+
+ for (zone = 0; zone < MAX_NR_ZONES; zone++)
+ wait_lruvec_unlock(&pn->zoneinfo[zone].lruvec);
+
+ kfree(pn);
+}
+
static void free_mem_cgroup_per_zone_info(struct mem_cgroup *memcg, int node)
{
struct mem_cgroup_per_node *pn = memcg->info.nodeinfo[node];
- int zone;
if (!pn)
return;
- for (zone = 0; zone < MAX_NR_ZONES; zone++)
- wait_lruvec_unlock(&pn->zoneinfo[zone].lruvec);
-
- kfree(pn);
+ call_rcu(&pn->rcu_head, free_pn_rcu);
}
static struct mem_cgroup *mem_cgroup_alloc(void)
next prev parent reply other threads:[~2012-02-20 17:23 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 17:22 [PATCH v2 00/22] mm: lru_lock splitting Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 01/22] memcg: rework inactive_ratio logic Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 02/22] memcg: fix page_referencies cgroup filter on global reclaim Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 03/22] memcg: use vm_swappiness from current memcg Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 04/22] mm: drain percpu lru add/rotate page-vectors on cpu hot-unplug Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 05/22] mm: replace per-cpu lru-add page-vectors with page-lists Konstantin Khlebnikov
2012-02-20 17:22 ` [PATCH v2 06/22] mm: deprecate pagevec lru-add functions Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 07/22] mm: rename lruvec->lists into lruvec->pages_lru Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 08/22] mm: add lruvec->pages_count Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 09/22] mm: link lruvec with zone and node Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 10/22] mm: unify inactive_list_is_low() Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 11/22] mm: add lruvec->reclaim_stat Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 12/22] mm: kill struct mem_cgroup_zone Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 13/22] mm: move page-to-lruvec translation upper Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 14/22] mm: push lruvec into update_page_reclaim_stat() Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 15/22] mm: push lruvecs from pagevec_lru_move_fn() to iterator Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 16/22] mm: introduce lruvec locking primitives Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 17/22] mm: handle lruvec relocks on lumpy reclaim Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 18/22] mm: handle lruvec relocks in compaction Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 19/22] mm: handle lruvec relock in memory controller Konstantin Khlebnikov
2012-02-20 17:23 ` [PATCH v2 20/22] mm: optimize putback for 0-order reclaim Konstantin Khlebnikov
2012-02-20 17:23 ` Konstantin Khlebnikov [this message]
2012-02-20 17:23 ` [PATCH v2 22/22] mm: split zone->lru_lock Konstantin Khlebnikov
2012-02-22 4:19 ` [PATCH v2 00/22] mm: lru_lock splitting Andi Kleen
2012-02-22 5:11 ` Konstantin Khlebnikov
2012-02-22 6:16 ` Andi Kleen
2012-02-23 14:01 ` Konstantin Khlebnikov
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