From: Jan Kara <jack@suse.cz> maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8MPXP Reference: https://lore.kernel.org/all/20231101174325.10596-4-jack@suse.cz/ ------------------------------------------- Btrfs device probing code needs adaptation so that it works when writes are restricted to its mounted devices. Since btrfs maintainer wants to merge these changes through btrfs tree and there are review bandwidth issues with that, let's not block all other filesystems and just not restrict writes to btrfs devices for now. CC: <linux-btrfs@vger.kernel.org> CC: David Sterba <dsterba@suse.com> CC: Josef Bacik <josef@toxicpanda.com> CC: Chris Mason <clm@fb.com> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20231101174325.10596-4-jack@suse.cz Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com> --- fs/btrfs/super.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 1a093ec0f7e3..9831e0b42a03 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1455,6 +1455,8 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type, return ERR_PTR(error); } + /* No support for restricting writes to btrfs devices yet... */ + mode &= ~BLK_OPEN_RESTRICT_WRITES; /* * Setup a dummy root and fs_info for test/set super. This is because * we don't actually fill this stuff out until open_ctree, but we need -- 2.31.1