6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
commit d6e035aad6c09991da1c667fb83419329a3baed8 upstream.
commit 5e2cf333b7bd ("md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d")
introduced a hung bug and will be reverted in next patch, since the issue
that commit is fixing is due to md superblock write is throttled by wbt,
to fix it, we can have superblock write bypass block layer throttle.
Fixes: 5e2cf333b7bd ("md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d")
Cc: stable@xxxxxxxxxxxxxxx # v5.19+
Suggested-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231108182216.73611-1-junxiao.bi@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/md.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -940,9 +940,10 @@ void md_super_write(struct mddev *mddev,
return;
bio = bio_alloc_bioset(rdev->meta_bdev ? rdev->meta_bdev : rdev->bdev,
- 1,
- REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH | REQ_FUA,
- GFP_NOIO, &mddev->sync_set);
+ 1,
+ REQ_OP_WRITE | REQ_SYNC | REQ_IDLE | REQ_META
+ | REQ_PREFLUSH | REQ_FUA,
+ GFP_NOIO, &mddev->sync_set);
atomic_inc(&rdev->nr_pending);
