This is a note to let you know that I've just added the patch titled
md/raid1: hold the barrier until handle_read_error() finishes
to the 5.4-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-raid1-hold-the-barrier-until-handle_read_error-fi.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 355b03caed8649bf582b4b555a97565bcbb424bd
Author: Xueshi Hu <xueshi.hu@xxxxxxxxxx>
Date: Mon Aug 14 21:53:56 2023 +0800
md/raid1: hold the barrier until handle_read_error() finishes
[ Upstream commit c069da449a13669ffa754fd971747e7e17e7d691 ]
handle_read_error() will call allow_barrier() to match the former barrier
raising. However, it should put the allow_barrier() at the end to avoid a
concurrent raid reshape.
Fixes: 689389a06ce7 ("md/raid1: simplify handle_read_error().")
Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Xueshi Hu <xueshi.hu@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230814135356.1113639-4-xueshi.hu@xxxxxxxxxx
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index c507b759491a2..253c620515f06 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2481,6 +2481,7 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
struct mddev *mddev = conf->mddev;
struct bio *bio;
struct md_rdev *rdev;
+ sector_t sector;
clear_bit(R1BIO_ReadError, &r1_bio->state);
/* we got a read error. Maybe the drive is bad. Maybe just
@@ -2510,12 +2511,13 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
}
rdev_dec_pending(rdev, conf->mddev);
- allow_barrier(conf, r1_bio->sector);
+ sector = r1_bio->sector;
bio = r1_bio->master_bio;
/* Reuse the old r1_bio so that the IO_BLOCKED settings are preserved */
r1_bio->state = 0;
raid1_read_request(mddev, bio, r1_bio->sectors, r1_bio);
+ allow_barrier(conf, sector);
}
static void raid1d(struct md_thread *thread)
