This is a note to let you know that I've just added the patch titled
md: bypass block throttle for superblock update
to the 6.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
md-bypass-block-throttle-for-superblock-update.patch
and it can be found in the queue-6.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 890857e15cdb434f94d116f343280d29201045e6
Author: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Date: Wed Nov 8 10:22:15 2023 -0800
md: bypass block throttle for superblock update
[ Upstream commit d6e035aad6c09991da1c667fb83419329a3baed8 ]
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: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 21b04607d53a..d243c196c598 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1037,9 +1037,10 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
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);
