From: Jan Kara <jack@suse.cz>
Date: Wed, 1 Nov 2023 17:43:11 +0000 (+0100)
Subject: xfs: Block writes to log device
X-Git-Tag: v6.8-rc1~214^2~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3584c8f48a70c1f74c7b7bab59cf22bb66224649;p=thirdparty%2Flinux.git

xfs: Block writes to log device

Ask block layer to not allow other writers to open block devices used
for xfs log and realtime devices.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20231101174325.10596-6-jack@suse.cz
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 86e94654a92b5..07857d967ee8b 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -366,8 +366,9 @@ xfs_blkdev_get(
 {
 	int			error = 0;
 
-	*handlep = bdev_open_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE,
-				     mp->m_super, &fs_holder_ops);
+	*handlep = bdev_open_by_path(name,
+		BLK_OPEN_READ | BLK_OPEN_WRITE | BLK_OPEN_RESTRICT_WRITES,
+		mp->m_super, &fs_holder_ops);
 	if (IS_ERR(*handlep)) {
 		error = PTR_ERR(*handlep);
 		*handlep = NULL;