[PATCH 6.18 044/641] md/raid10: fix any_working flag handling in raid10_sync_request

Greg Kroah-Hartman
2026-02-25T01:43:02Z

6.18-stable review patch. If anyone has any objections, please let me know.

------------------

From: Li Nan <linan122@huawei.com>

[ Upstream commit 99582edb3f62e8ee6c34512021368f53f9b091f2 ]

In raid10_sync_request(), 'any_working' indicates if any IO will
be submitted. When there's only one In_sync disk with badblocks,
'any_working' might be set to 1 but no IO is submitted. Fix it by
setting 'any_working' after badblock checks.

Link: https://lore.kernel.org/linux-raid/20260105110300.1442509-11-linan666@huaweicloud.com
Fixes: e875ecea266a ("md/raid10 record bad blocks as needed during recovery.")
Signed-off-by: Li Nan <linan122@huawei.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Yu Kuai <yukuai@fnnas.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/md/raid10.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 14dcd5142eb47..d58ae150b4502 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3402,7 +3402,6 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
!test_bit(In_sync, &rdev->flags))
continue;
/* This is where we read from */
- any_working = 1;
sector = r10_bio->devs[j].addr;

if (is_badblock(rdev, sector, max_sync,
@@ -3417,6 +3416,7 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
continue;
}
}
+ any_working = 1;
bio = r10_bio->devs[0].bio;
bio->bi_next = biolist;
biolist = bio;
--
2.51.0