linux-kernel - [PATCH -next 11/29] md/raid5-cache: use new apis to suspend array for r5c_disable_writeback

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Message-Id: <20230803132930.2742286-12-yukuai1@huaweicloud.com>
Date:   Thu,  3 Aug 2023 21:29:12 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     song@...nel.org, xni@...hat.com
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yukuai1@...weicloud.com, yi.zhang@...wei.com,
        yangerkun@...wei.com
Subject: [PATCH -next 11/29] md/raid5-cache: use new apis to suspend array for r5c_disable_writeback_async()

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

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

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/raid5-cache.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index b6e0a6bb3965..c71cb5c954e0 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -686,7 +686,6 @@ static void r5c_disable_writeback_async(struct work_struct *work)
 					   disable_writeback_work);
 	struct mddev *mddev = log->rdev->mddev;
 	struct r5conf *conf = mddev->private;
-	int locked = 0;
 
 	if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH)
 		return;
@@ -696,13 +695,12 @@ static void r5c_disable_writeback_async(struct work_struct *work)
 	/* wait superblock change before suspend */
 	wait_event(mddev->sb_wait,
 		   !READ_ONCE(conf->log) ||
-		   (!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) &&
-		    (locked = mddev_trylock(mddev))));
-	if (locked) {
-		mddev_suspend(mddev);
+		   !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags));
+
+	if (READ_ONCE(conf->log)) {
+		__mddev_suspend(mddev);
 		log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH;
-		mddev_resume(mddev);
-		mddev_unlock(mddev);
+		__mddev_resume(mddev);
 	}
 }
 
-- 
2.39.2