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

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Message-Id: <20241031033114.3845582-3-yukuai1@huaweicloud.com>
Date: Thu, 31 Oct 2024 11:31:09 +0800
From: Yu Kuai <yukuai1@...weicloud.com>
To: song@...nel.org,
	mariusz.tkaczyk@...el.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 RESEND 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>
Tested-by: Mariusz Tkaczyk <mariusz.tkaczyk@...ux.intel.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 179ee4afe937..37d1469bfc82 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -9762,9 +9762,7 @@ 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