diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index bd3ce2b43838..022f20810089 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1919,6 +1919,22 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) btrfs_resize_thread_pool(fs_info, fs_info->thread_pool_size, old_thread_pool_size); + if (btrfs_test_opt(fs_info, FREE_SPACE_TREE) != + btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE) && + (!sb_rdonly(sb) || (*flags & SB_RDONLY))) { + btrfs_warn(fs_info, + "remount supports changing free space tree only from ro to rw"); + /* Make sure free space cache options match the state on disk */ + if (btrfs_fs_compat_ro(fs_info, FREE_SPACE_TREE)) { + btrfs_set_opt(fs_info->mount_opt, FREE_SPACE_TREE); + btrfs_clear_opt(fs_info->mount_opt, SPACE_CACHE); + } + if (btrfs_free_space_cache_v1_active(fs_info)) { + btrfs_clear_opt(fs_info->mount_opt, FREE_SPACE_TREE); + btrfs_set_opt(fs_info->mount_opt, SPACE_CACHE); + } + } + if ((bool)(*flags & SB_RDONLY) == sb_rdonly(sb)) goto out; |