linux-kernel - [PATCH -next v2 15/28] md/raid5: use new apis to suspend array for raid5_store_group_thread

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Message-Id: <20230828020021.2489641-16-yukuai1@huaweicloud.com>
Date:   Mon, 28 Aug 2023 10:00:08 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     agk@...hat.com, snitzer@...nel.org, dm-devel@...hat.com,
        song@...nel.org, xni@...hat.com
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 -next v2 15/28] md/raid5: use new apis to suspend array for raid5_store_group_thread_cnt()

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

Convert to use new apis, the old apis will be removed eventually.

This is not hot path, so performance is not concerned.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/raid5.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index c937716fed01..8060d29e99d2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7221,15 +7221,13 @@ raid5_store_group_thread_cnt(struct mddev *mddev, const char *page, size_t len)
 	if (new > 8192)
 		return -EINVAL;
 
-	err = mddev_lock(mddev);
+	err = mddev_suspend_and_lock(mddev);
 	if (err)
 		return err;
 	conf = mddev->private;
 	if (!conf)
 		err = -ENODEV;
 	else if (new != conf->worker_cnt_per_group) {
-		mddev_suspend(mddev);
-
 		old_groups = conf->worker_groups;
 		if (old_groups)
 			flush_workqueue(raid5_wq);
@@ -7246,9 +7244,8 @@ raid5_store_group_thread_cnt(struct mddev *mddev, const char *page, size_t len)
 				kfree(old_groups[0].workers);
 			kfree(old_groups);
 		}
-		mddev_resume(mddev);
 	}
-	mddev_unlock(mddev);
+	mddev_unlock_and_resume(mddev);
 
 	return err ?: len;
 }
-- 
2.39.2