diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 35acdab56a1c..2c7e50980a70 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3104,6 +3104,20 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device err = -EINVAL; goto fail_alloc; } + /* + * We have unsupported RO compat features, although RO mounted, we + * should not cause any metadata write, including log replay. + * Or we could screw up whatever the new feature requires. + */ + if (unlikely(features && btrfs_super_log_root(disk_super) && + !btrfs_test_opt(fs_info, NOLOGREPLAY))) { + btrfs_err(fs_info, +"cannot replay dirty log with unsupported compat_ro features (0x%llx), try rescue=nologreplay", + features); + err = -EINVAL; + goto fail_alloc; + } + ret = btrfs_init_workqueues(fs_info, fs_devices); if (ret) { |