linux-kernel - [PATCH -next 5/6] md: wake up 'resync_wait' at last in md_reap_sync

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Message-Id: <20230322064122.2384589-6-yukuai1@huaweicloud.com>
Date:   Wed, 22 Mar 2023 14:41:21 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     guoqing.jiang@...ux.dev, logang@...tatee.com,
        pmenzel@...gen.mpg.de, agk@...hat.com, snitzer@...nel.org,
        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 -next 5/6] md: wake up 'resync_wait' at last in md_reap_sync_thread()

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

We just replace md_reap_sync_thread() with wait_event(resync_wait, ...)
from action_store(), this patch just make sure action_store() will still
wait for everything to be done in md_reap_sync_thread().

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/md.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ddf33a11d8de..cabdfd4ec001 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -9511,7 +9511,6 @@ void md_reap_sync_thread(struct mddev *mddev)
 	if (mddev_is_clustered(mddev) && is_reshaped
 				      && !test_bit(MD_CLOSING, &mddev->flags))
 		md_cluster_ops->update_size(mddev, old_dev_sectors);
-	wake_up(&resync_wait);
 	/* flag recovery needed just to double check */
 	set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
 	sysfs_notify_dirent_safe(mddev->sysfs_completed);
@@ -9519,6 +9518,7 @@ void md_reap_sync_thread(struct mddev *mddev)
 	md_new_event();
 	if (mddev->event_work.func)
 		queue_work(md_misc_wq, &mddev->event_work);
+	wake_up(&resync_wait);
 }
 EXPORT_SYMBOL(md_reap_sync_thread);
 
-- 
2.31.1