diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f9488161bf83..95d6392a1acf 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -631,6 +631,18 @@ static int btrfs_parse_param(struct fs_context *fc, struct fs_parameter *param) return 0; } +/* + * Some options only have meaning at mount time and shouldn't persist across + * remounts, or be displayed. Clear these at the end of mount and remount code + * paths. + */ +static void btrfs_clear_oneshot_options(struct btrfs_fs_info *fs_info) +{ + btrfs_clear_opt(fs_info->mount_opt, USEBACKUPROOT); + btrfs_clear_opt(fs_info->mount_opt, CLEAR_CACHE); + btrfs_clear_opt(fs_info->mount_opt, NOSPACECACHE); +} + static bool check_ro_option(struct btrfs_fs_info *fs_info, unsigned long mount_opt, unsigned long opt, const char *opt_name) @@ -1865,6 +1877,8 @@ static int btrfs_get_tree_super(struct fs_context *fc) return ret; } + btrfs_clear_oneshot_options(fs_info); + fc->root = dget(sb->s_root); return 0; |