From: Mike Christie <mchristi@redhat.com>
Date: Tue, 13 Aug 2019 16:39:49 +0000 (-0500)
Subject: nbd: add set cmd timeout helper
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=55313e92bd17a872b99cfb5f21dd6d3ff1999bce;p=android-x86%2Fkernel.git

nbd: add set cmd timeout helper

Add a helper to set the cmd timeout. It does not really do a lot now,
but will be more useful in the next patches.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index e21d2ded732b..69d0e5260e1d 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1246,6 +1246,12 @@ static bool nbd_is_valid_blksize(unsigned long blksize)
 	return true;
 }
 
+static void nbd_set_cmd_timeout(struct nbd_device *nbd, u64 timeout)
+{
+	nbd->tag_set.timeout = timeout * HZ;
+	blk_queue_rq_timeout(nbd->disk->queue, timeout * HZ);
+}
+
 /* Must be called with config_lock held */
 static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
 		       unsigned int cmd, unsigned long arg)
@@ -1276,10 +1282,8 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
 		nbd_size_set(nbd, config->blksize, arg);
 		return 0;
 	case NBD_SET_TIMEOUT:
-		if (arg) {
-			nbd->tag_set.timeout = arg * HZ;
-			blk_queue_rq_timeout(nbd->disk->queue, arg * HZ);
-		}
+		if (arg)
+			nbd_set_cmd_timeout(nbd, arg);
 		return 0;
 
 	case NBD_SET_FLAGS:
@@ -1799,11 +1803,9 @@ again:
 	if (ret)
 		goto out;
 
-	if (info->attrs[NBD_ATTR_TIMEOUT]) {
-		u64 timeout = nla_get_u64(info->attrs[NBD_ATTR_TIMEOUT]);
-		nbd->tag_set.timeout = timeout * HZ;
-		blk_queue_rq_timeout(nbd->disk->queue, timeout * HZ);
-	}
+	if (info->attrs[NBD_ATTR_TIMEOUT])
+		nbd_set_cmd_timeout(nbd,
+				    nla_get_u64(info->attrs[NBD_ATTR_TIMEOUT]));
 	if (info->attrs[NBD_ATTR_DEAD_CONN_TIMEOUT]) {
 		config->dead_conn_timeout =
 			nla_get_u64(info->attrs[NBD_ATTR_DEAD_CONN_TIMEOUT]);
@@ -1971,11 +1973,9 @@ static int nbd_genl_reconfigure(struct sk_buff *skb, struct genl_info *info)
 	if (ret)
 		goto out;
 
-	if (info->attrs[NBD_ATTR_TIMEOUT]) {
-		u64 timeout = nla_get_u64(info->attrs[NBD_ATTR_TIMEOUT]);
-		nbd->tag_set.timeout = timeout * HZ;
-		blk_queue_rq_timeout(nbd->disk->queue, timeout * HZ);
-	}
+	if (info->attrs[NBD_ATTR_TIMEOUT])
+		nbd_set_cmd_timeout(nbd,
+				    nla_get_u64(info->attrs[NBD_ATTR_TIMEOUT]));
 	if (info->attrs[NBD_ATTR_DEAD_CONN_TIMEOUT]) {
 		config->dead_conn_timeout =
 			nla_get_u64(info->attrs[NBD_ATTR_DEAD_CONN_TIMEOUT]);