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From:   Ye Bin <yebin@huaweicloud.com>
To:     axboe@kernel.dk, rostedt@goodmis.org, mhiramat@kernel.org,
        linux-block@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, yebin@huaweicloud.com,
        Ye Bin <yebin10@huawei.com>
Subject: [PATCH v3 3/3] blktrace: remove unnessary stop block trace in 'blk_trace_shutdown'
Date:   Wed, 19 Oct 2022 11:36:02 +0800
Message-Id: <20221019033602.752383-4-yebin@huaweicloud.com>
In-Reply-To: <20221019033602.752383-1-yebin@huaweicloud.com>
References: <20221019033602.752383-1-yebin@huaweicloud.com>
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From: Ye Bin <yebin10@huawei.com>

As previous commit, 'blk_trace_cleanup' will stop block trace if
block trace's state is 'Blktrace_running'.
So remove unnessary stop block trace in 'blk_trace_shutdown'.

Signed-off-by: Ye Bin <yebin10@huawei.com>
---
 kernel/trace/blktrace.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index e17bba027a2c..a995ea1ef849 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -776,10 +776,8 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
 void blk_trace_shutdown(struct request_queue *q)
 {
 	if (rcu_dereference_protected(q->blk_trace,
-				      lockdep_is_held(&q->debugfs_mutex))) {
-		__blk_trace_startstop(q, 0);
+				      lockdep_is_held(&q->debugfs_mutex)))
 		__blk_trace_remove(q);
-	}
 }
 
 #ifdef CONFIG_BLK_CGROUP
-- 
2.31.1