From c069da449a13669ffa754fd971747e7e17e7d691 Mon Sep 17 00:00:00 2001
From: Xueshi Hu <xueshi.hu@smartx.com>
Date: Mon, 14 Aug 2023 21:53:56 +0800
Subject: [PATCH] md/raid1: hold the barrier until handle_read_error() finishes
Git-commit: c069da449a13669ffa754fd971747e7e17e7d691
Patch-mainline: v6.6-rc1
References: git-fixes
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@huawei.com>
Signed-off-by: Xueshi Hu <xueshi.hu@smartx.com>
Link: https://lore.kernel.org/r/20230814135356.1113639-4-xueshi.hu@smartx.com
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/raid1.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index b3fc44157cfc..56f2725a996f 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2511,6 +2511,7 @@ 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
@@ -2540,12 +2541,13 @@ 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)
--
2.35.3