From ed4d0a4ea11e19863952ac6a7cea3bbb27ccd452 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 4 Apr 2019 18:56:10 +0200
Subject: [PATCH] md: add a missing endianness conversion in check_sb_changes
Git-commit: ed4d0a4ea11e19863952ac6a7cea3bbb27ccd452
Patch-mainline: v5.2-rc1
References: bsc#1166003

The on-disk value is little endian and we need to convert it to
native endian before storing the value in the in-core structure.

Fixes: 7564beda19b36 ("md-cluster/raid10: support add disk under grow mode")
Cc: <stable@vger.kernel.org> # 4.20+
Acked-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Coly Li <colyli@suse.de>

---
 drivers/md/md.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 664b77ceaf2d..a15eb7e37c6d 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -9227,7 +9227,7 @@ static void check_sb_changes(struct mddev *mddev, struct md_rdev *rdev)
 		 * reshape is happening in the remote node, we need to
 		 * update reshape_position and call start_reshape.
 		 */
-		mddev->reshape_position = sb->reshape_position;
+		mddev->reshape_position = le64_to_cpu(sb->reshape_position);
 		if (mddev->pers->update_reshape_pos)
 			mddev->pers->update_reshape_pos(mddev);
 		if (mddev->pers->start_reshape)
-- 
2.25.0