linux-kernel - [PATCH v4 4/5] dm-raid: remove useless checking in raid

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Message-Id: <20230402091236.976723-5-yukuai1@huaweicloud.com>
Date:   Sun,  2 Apr 2023 17:12:35 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     logang@...tatee.com, song@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
        yukuai3@...wei.com, yukuai1@...weicloud.com, yi.zhang@...wei.com,
        yangerkun@...wei.com
Subject: [PATCH v4 4/5] dm-raid: remove useless checking in raid_message()

From: Yu Kuai <yukuai3@...wei.com>

md_wakeup_thread() handle the case that pass in md_thread is NULL, there
is no need to checking this. Prepare to protect md_thread with rcu.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/dm-raid.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 60632b409b80..5c952a209214 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3754,11 +3754,11 @@ static int raid_message(struct dm_target *ti, unsigned int argc, char **argv,
 		 * canceling read-auto mode
 		 */
 		mddev->ro = 0;
-		if (!mddev->suspended && mddev->sync_thread)
+		if (!mddev->suspended)
 			md_wakeup_thread(mddev->sync_thread);
 	}
 	set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-	if (!mddev->suspended && mddev->thread)
+	if (!mddev->suspended)
 		md_wakeup_thread(mddev->thread);
 
 	return 0;
-- 
2.39.2