linux-kernel - [PATCH 1/1] blk-mq: remove unused 'nr_expired' from blk_mq_hw

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Date:   Tue, 19 Mar 2019 23:05:18 +0800
From:   Dongli Zhang <dongli.zhang@...cle.com>
To:     axboe@...nel.dk, linux-block@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, keith.busch@...el.com
Subject: [PATCH 1/1] blk-mq: remove unused 'nr_expired' from blk_mq_hw_ctx

There is no usage of 'nr_expired'.

The 'nr_expired' was introduced by commit 1d9bd5161ba3 ("blk-mq: replace
timeout synchronization with a RCU and generation based scheme"). Its usage
was removed since commit 12f5b9314545 ("blk-mq: Remove generation
seqeunce").

Signed-off-by: Dongli Zhang <dongli.zhang@...cle.com>
---
 include/linux/blk-mq.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b0c814b..3535969 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -57,7 +57,6 @@ struct blk_mq_hw_ctx {
 	unsigned int		queue_num;
 
 	atomic_t		nr_active;
-	unsigned int		nr_expired;
 
 	struct hlist_node	cpuhp_dead;
 	struct kobject		kobj;
-- 
2.7.4