From 7216f230ea6c888417b9a12bbf163f0033d23fcd Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Date: Fri, 25 Jul 2008 01:47:19 -0700
Subject: [PATCH] --- yaml --- r: 105910 b: refs/heads/master c:
 12b9804419cfb1c1bdac413f6c373af3b88d154b h: refs/heads/master v: v3

---
 [refs]                            |  2 +-
 trunk/include/linux/res_counter.h | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 79dfcbb65889..a3b733a74ced 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cede86acd8bd5d2205dec28db8ac86410a3a19e8
+refs/heads/master: 12b9804419cfb1c1bdac413f6c373af3b88d154b
diff --git a/trunk/include/linux/res_counter.h b/trunk/include/linux/res_counter.h
index 290205dfe094..fdeadd9740dc 100644
--- a/trunk/include/linux/res_counter.h
+++ b/trunk/include/linux/res_counter.h
@@ -158,4 +158,20 @@ static inline void res_counter_reset_failcnt(struct res_counter *cnt)
 	cnt->failcnt = 0;
 	spin_unlock_irqrestore(&cnt->lock, flags);
 }
+
+static inline int res_counter_set_limit(struct res_counter *cnt,
+		unsigned long long limit)
+{
+	unsigned long flags;
+	int ret = -EBUSY;
+
+	spin_lock_irqsave(&cnt->lock, flags);
+	if (cnt->usage < limit) {
+		cnt->limit = limit;
+		ret = 0;
+	}
+	spin_unlock_irqrestore(&cnt->lock, flags);
+	return ret;
+}
+
 #endif