linux-kernel - [PATCH md-6.12 2/7] md: don't wait faulty rdev in md_wait_for_blocked

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Message-Id: <20240830072721.2112006-3-yukuai1@huaweicloud.com>
Date: Fri, 30 Aug 2024 15:27:16 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: mariusz.tkaczyk@...el.com,
	song@...nel.org
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 md-6.12 2/7] md: don't wait faulty rdev in md_wait_for_blocked_rdev()

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

md_wait_for_blocked_rdev() is called for write IO while rdev is
blocked, howerver, rdev can be faulty after choosing this rdev to write,
and faulty rdev should never be accessed anymore, hence there is no point
to wait for faulty rdev to be unblocked.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/md.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 414146111425..675d89597c7b 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -9728,9 +9728,7 @@ EXPORT_SYMBOL(md_reap_sync_thread);
 void md_wait_for_blocked_rdev(struct md_rdev *rdev, struct mddev *mddev)
 {
 	sysfs_notify_dirent_safe(rdev->sysfs_state);
-	wait_event_timeout(rdev->blocked_wait,
-			   !test_bit(Blocked, &rdev->flags) &&
-			   !test_bit(BlockedBadBlocks, &rdev->flags),
+	wait_event_timeout(rdev->blocked_wait, rdev_blocked(rdev),
 			   msecs_to_jiffies(5000));
 	rdev_dec_pending(rdev, mddev);
 }
-- 
2.39.2