linux-kernel - [PATCH v2 7/7] md/raid5: don't set Faulty rdev for blocked

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Message-Id: <20241011011630.2002803-8-yukuai1@huaweicloud.com>
Date: Fri, 11 Oct 2024 09:16:30 +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 v2 7/7] md/raid5: don't set Faulty rdev for blocked_rdev

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

Faulty rdev should never be accessed anymore, hence there is no point to
wait for bad block to be acknowledged in this case while handling write
request.

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 drivers/md/raid5.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index dc2ea636d173..f5ac81dd21b2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4724,14 +4724,13 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
 		if (rdev) {
 			is_bad = rdev_has_badblock(rdev, sh->sector,
 						   RAID5_STRIPE_SECTORS(conf));
-			if (s->blocked_rdev == NULL
-			    && (test_bit(Blocked, &rdev->flags)
-				|| is_bad < 0)) {
+			if (s->blocked_rdev == NULL) {
 				if (is_bad < 0)
-					set_bit(BlockedBadBlocks,
-						&rdev->flags);
-				s->blocked_rdev = rdev;
-				atomic_inc(&rdev->nr_pending);
+					set_bit(BlockedBadBlocks, &rdev->flags);
+				if (rdev_blocked(rdev)) {
+					s->blocked_rdev = rdev;
+					atomic_inc(&rdev->nr_pending);
+				}
 			}
 		}
 		clear_bit(R5_Insync, &dev->flags);
-- 
2.39.2