linux-kernel - [PATCH] vhost: It's better to use size_t for the 3rd parameter of vhost_exceeds

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Message-ID: <1569224801-101248-1-git-send-email-wangxu72@huawei.com>
Date:   Mon, 23 Sep 2019 15:46:41 +0800
From:   wangxu <wangxu72@...wei.com>
To:     <jasowang@...hat.com>, <mst@...hat.com>
CC:     <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] vhost: It's better to use size_t for the 3rd parameter of vhost_exceeds_weight()

From: Wang Xu <wangxu72@...wei.com>

Caller of vhost_exceeds_weight(..., total_len) in drivers/vhost/net.c
usually pass size_t total_len, which may be affected by rx/tx package.

Signed-off-by: Wang Xu <wangxu72@...wei.com>
---
 drivers/vhost/vhost.c | 4 ++--
 drivers/vhost/vhost.h | 7 ++++---
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 36ca2cf..159223a 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -412,7 +412,7 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
 }
 
 bool vhost_exceeds_weight(struct vhost_virtqueue *vq,
-			  int pkts, int total_len)
+			  int pkts, size_t total_len)
 {
 	struct vhost_dev *dev = vq->dev;
 
@@ -454,7 +454,7 @@ static size_t vhost_get_desc_size(struct vhost_virtqueue *vq,
 
 void vhost_dev_init(struct vhost_dev *dev,
 		    struct vhost_virtqueue **vqs, int nvqs,
-		    int iov_limit, int weight, int byte_weight)
+		    int iov_limit, int weight, size_t byte_weight)
 {
 	struct vhost_virtqueue *vq;
 	int i;
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index e9ed272..8d80389d 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -172,12 +172,13 @@ struct vhost_dev {
 	wait_queue_head_t wait;
 	int iov_limit;
 	int weight;
-	int byte_weight;
+	size_t byte_weight;
 };
 
-bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts, int total_len);
+bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts,
+			  size_t total_len);
 void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs,
-		    int nvqs, int iov_limit, int weight, int byte_weight);
+		    int nvqs, int iov_limit, int weight, size_t byte_weight);
 long vhost_dev_set_owner(struct vhost_dev *dev);
 bool vhost_dev_has_owner(struct vhost_dev *dev);
 long vhost_dev_check_owner(struct vhost_dev *);
-- 
1.8.5.6