linux-kernel - [PATCH v2 1/3] mlx5: Use refcount

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Message-Id: <20190802172341.8359-1-hslester96@gmail.com>
Date:   Sat,  3 Aug 2019 01:23:41 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Saeed Mahameed <saeedm@...lanox.com>,
        Leon Romanovsky <leon@...nel.org>, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH v2 1/3] mlx5: Use refcount_t for refcount

refcount_t is better for reference counters since its
implementation can prevent overflows.
So convert atomic_t ref counters to refcount_t.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
Changes in v2:
  - Add #include.

 include/linux/mlx5/driver.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 0e6da1840c7d..5b56f343ce87 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -47,6 +47,7 @@
 #include <linux/interrupt.h>
 #include <linux/idr.h>
 #include <linux/notifier.h>
+#include <linux/refcount.h>
 
 #include <linux/mlx5/device.h>
 #include <linux/mlx5/doorbell.h>
@@ -398,7 +399,7 @@ enum mlx5_res_type {
 
 struct mlx5_core_rsc_common {
 	enum mlx5_res_type	res;
-	atomic_t		refcount;
+	refcount_t		refcount;
 	struct completion	free;
 };
 
-- 
2.20.1