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Message-Id: <20081128180737.9d6553b8.nishimura@mxp.nes.nec.co.jp>
Date: Fri, 28 Nov 2008 18:07:37 +0900
From: Daisuke Nishimura <nishimura@....nes.nec.co.jp>
To: LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>
Cc: Balbir Singh <balbir@...ux.vnet.ibm.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Pavel Emelyanov <xemul@...nvz.org>,
Li Zefan <lizf@...fujitsu.com>,
Paul Menage <menage@...gle.com>, nishimura@....nes.nec.co.jp
Subject: [RFC][PATCH -mmotm 1/2] take account of memsw
mem_cgroup_hierarchical_reclaim checks only mem->res now.
It should also check mem->memsw when do_swap_account.
Signed-off-by: Daisuke Nishimura <nishimura@....nes.nec.co.jp>
---
mm/memcontrol.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 20e1d90..e7806fc 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -567,6 +567,19 @@ done:
return ret;
}
+static int mem_cgroup_check_under_limit(struct mem_cgroup *mem)
+{
+ if (do_swap_account) {
+ if (res_counter_check_under_limit(&mem->res) &&
+ res_counter_check_under_limit(&mem->memsw))
+ return 1;
+ } else
+ if (res_counter_check_under_limit(&mem->res))
+ return 1;
+
+ return 0;
+}
+
/*
* Dance down the hierarchy if needed to reclaim memory. We remember the
* last child we reclaimed from, so that we don't end up penalizing
@@ -588,7 +601,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
* have left.
*/
ret = try_to_free_mem_cgroup_pages(root_mem, gfp_mask, noswap);
- if (res_counter_check_under_limit(&root_mem->res))
+ if (mem_cgroup_check_under_limit(root_mem))
return 0;
next_mem = mem_cgroup_get_first_node(root_mem);
@@ -602,7 +615,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
continue;
}
ret = try_to_free_mem_cgroup_pages(next_mem, gfp_mask, noswap);
- if (res_counter_check_under_limit(&root_mem->res))
+ if (mem_cgroup_check_under_limit(root_mem))
return 0;
cgroup_lock();
next_mem = mem_cgroup_get_next_node(next_mem, root_mem);
--
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