linux-kernel - [PATCH] blktrace:use '__blk_trace_remove' helper in 'blk_trace_remove

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Message-Id: <20221026075631.682100-1-yebin@huaweicloud.com>
Date:   Wed, 26 Oct 2022 15:56:31 +0800
From:   Ye Bin <yebin@...weicloud.com>
To:     axboe@...nel.dk, rostedt@...dmis.org, mhiramat@...nel.org,
        linux-block@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Ye Bin <yebin10@...wei.com>
Subject: [PATCH] blktrace:use '__blk_trace_remove' helper in 'blk_trace_remove_queue'

From: Ye Bin <yebin10@...wei.com>

After '60a9bb9048f9' and 'dcd1a59c62dc' commit 'blk_trace_remove_queue' is do
the same job with '__blk_trace_remove', so just call '__blk_trace_remove'.

Signed-off-by: Ye Bin <yebin10@...wei.com>
---
 kernel/trace/blktrace.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index a995ea1ef849..115ae18e479d 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1609,19 +1609,7 @@ device_initcall(init_blk_tracer);
 
 static int blk_trace_remove_queue(struct request_queue *q)
 {
-	struct blk_trace *bt;
-
-	bt = rcu_replace_pointer(q->blk_trace, NULL,
-				 lockdep_is_held(&q->debugfs_mutex));
-	if (bt == NULL)
-		return -EINVAL;
-
-	blk_trace_stop(bt);
-
-	put_probe_ref();
-	synchronize_rcu();
-	blk_trace_free(q, bt);
-	return 0;
+	return __blk_trace_remove(q);
 }
 
 /*
-- 
2.31.1