diff options
Diffstat (limited to 'fs/logfs/super.c')
| -rw-r--r-- | fs/logfs/super.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/logfs/super.c b/fs/logfs/super.c index 1d081b7ede5..c66beab78de 100644 --- a/fs/logfs/super.c +++ b/fs/logfs/super.c @@ -440,7 +440,7 @@ static int __logfs_read_sb(struct super_block *sb) return 0; } -static int logfs_read_sb(struct super_block *sb) +static int logfs_read_sb(struct super_block *sb, int read_only) { struct logfs_super *super = logfs_super(sb); int ret; @@ -460,6 +460,12 @@ static int logfs_read_sb(struct super_block *sb) if (ret) return ret; + if (super->s_feature_incompat & ~LOGFS_FEATURES_INCOMPAT) + return -EIO; + if ((super->s_feature_ro_compat & ~LOGFS_FEATURES_RO_COMPAT) && + !read_only) + return -EIO; + mutex_init(&super->s_dirop_mutex); mutex_init(&super->s_object_alias_mutex); INIT_LIST_HEAD(&super->s_freeing_list); @@ -555,7 +561,7 @@ int logfs_get_sb_device(struct file_system_type *type, int flags, sb->s_op = &logfs_super_operations; sb->s_flags = flags | MS_NOATIME; - err = logfs_read_sb(sb); + err = logfs_read_sb(sb, sb->s_flags & MS_RDONLY); if (err) goto err1; |