Symbol: __btrfs_set_fs_compat_ro
fs/btrfs/fs.h
1127
void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag,
fs/btrfs/fs.h
1148
__btrfs_set_fs_compat_ro((__fs_info), BTRFS_FEATURE_COMPAT_RO_##opt, #opt)