1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h
index 290205dfe094..fdeadd9740dc 100644
--- a/include/linux/res_counter.h
+++ b/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